Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at s √ = 13 TeV
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-EP-2020-0792020/08/14
CMS-HIG-18-013
Search for resonant pair production of Higgs bosons in thebbZZ channel in proton-proton collisions at √ s =
13 TeV
The CMS Collaboration ∗ Abstract
A search for the production of a narrow-width resonance decaying into a pair ofHiggs bosons decaying into the bbZZ channel is presented. The analysis is based ondata collected with the CMS detector during 2016, in proton-proton collisions at theLHC, corresponding to an integrated luminosity of 35.9 fb − . The final states consid-ered are the ones where one of the Z bosons decays into a pair of muons or electrons,and the other Z boson decays either to a pair of quarks or a pair of neutrinos. Upperlimits at 95% confidence level are placed on the production of narrow-width spin-0or spin-2 particles decaying to a pair of Higgs bosons, in models with and without anextended Higgs sector. For a resonance mass range between 260 and 1000 GeV, limitson the production cross section times branching fraction of a spin-0 and spin-2 reso-nance range from 0.1 to 5.0 pb and 0.1 to 3.6 pb, respectively. These results set limitsin parameter space in bulk Randall–Sundrum radion, Kaluza–Klein excitation of thegraviton, and N2HDM models. For specific choices of parameters the N2HDM can beexcluded in a mass range between 360 and 620 GeV for a resonance decaying to twoHiggs bosons. This is the first search for Higgs boson resonant pair production in thebbZZ channel. ”Published in Physical Review D as doi:10.1103/PhysRevD.102.032003 .” c (cid:13) ∗ See Appendix A for the list of collaboration members a r X i v : . [ h e p - e x ] A ug The discovery of the Higgs boson (h) in 2012 [1–4] has led to a detailed program of studies ofthe Higgs field couplings to the elementary particles of the standard model (SM) of particlephysics: leptons, quarks, and gauge bosons. To fully understand the form of the Higgs fieldpotential, which is a key element in the formulation of the SM, it is important to also study theself-interaction of the Higgs boson. The self-interaction can be investigated through measure-ments of the production of a pair of Higgs bosons (hh). In the SM, hh production is a rare,nonresonant process, with a small production rate [5] that will require the future data sets ofthe high-luminosity LHC to be observed [5]. Hence, an early observation of hh production,a resonant production in particular, would be a spectacular signature of physics beyond thestandard model (BSM). The production of gravitons, radions, or stoponium [6–8], for example,could lead to s -channel hh production via narrow-width resonances. The breadth of the Higgsboson decay channels provides a unique opportunity to test the self-consistency of an hh signalwith the SM or models with extended electroweak sectors, such as two-Higgs doublet models(2HDM) [9, 10] or extensions of the minimal supersymmetric standard model [11–13].This paper reports a search for resonant pp → X → HH production in the HH → bbZZdecay channel, where X is a narrow-width resonance of spin-0 or spin-2, and H can representeither h or an additional Higgs boson from an extended electroweak sector. The search usesproton-proton (pp) collision data at √ s =
13 TeV, recorded with the CMS detector at the LHCin 2016, and corresponding to an integrated luminosity of 35.9 fb − . It covers a range of reso-nance masses between 260 and 1000 GeV. The final state consists of two b jets from one Higgsboson decay and two distinct Z boson decay signatures from the other H → ZZ decay: twosame-flavor, opposite-sign (OS) leptons from a decay of one of the Z bosons, and either twojets of any flavor (the bb (cid:96)(cid:96) jj channel) or significant missing transverse momentum (the bb (cid:96)(cid:96) νν channel) from the decay of the second Z boson to neutrinos. In both cases, the selected chargedleptons are either electrons or muons. In the SM, the branching fractions of these signaturesrepresent 0.43 (0.12)% of the full hh decay through the bbZZ intermediate state in the bb (cid:96)(cid:96) jj(bb (cid:96)(cid:96) νν ) channel. The challenging aspect of the search in the bb (cid:96)(cid:96) jj channel is the ability todiscriminate the signal containing two b jets and two additional jets from multijet backgroundevents. For a search in the bb (cid:96)(cid:96) νν channel, the challenge resides in discriminating the sig-nal against top quark anti-top quark (tt) events and instrumental background sources of largemissing transverse momentum arising from the mismeasurement of the energies of jets in thefinal state. The two channels are kept independent by applying orthogonal selections on themissing transverse momentum of the event. Signal yields are calculated for each individualchannel and are then combined. Having multiple decay channels with complementary back-ground compositions and sensitivities over a large resonance mass ( m X ) range makes this com-bination of the bb (cid:96)(cid:96) νν and bb (cid:96)(cid:96) jj channels highly efficient for covering the bbZZ final state.This is the first search for Higgs boson resonant pair production in the bbZZ channel.Previous searches for resonant hh production have been performed by the CMS and ATLASCollaborations in the bbbb [14, 15], bb ττ [16, 17], bb γγ [18], and bb (cid:96) ν (cid:96) ν [17, 19] channels.While coverage of as many hh decay channels as possible remains necessary to understand theexact nature of the Higgs boson self-coupling and the electroweak symmetry breaking mech-anism, a bbZZ search is particularly interesting in models with extended electroweak sectors,where the phenomenology of additional Higgs bosons can lead to significantly enhanced bbZZproduction, while suppressing the BSM production of bbbb, bb ττ , or bb γγ final states. As in the previous searches, a class of narrow width resonance models arising from the Randall–Sundrum (RS) model [20] in warped extra dimensions [21–24] are considered. This scenariointroduces one small spatial extra dimension with a nonfactorizable geometry, where the SMparticles are not allowed to propagate along that extra dimension, and is referred to in thissearch as RS1. The resonant particle can be a radion (spin-0) or the first Kaluza–Klein (KK)excitation of a graviton (spin-2). The production cross section of the radion is proportional to1/ λ where λ R is the interaction scale parameter of the theory. In this analysis, we considerthe cases where λ R = kL =
35, where k is the constant in the warp factor ( e − kL ) ap-pearing in the space-time metric of the theory and L is the size of the extra dimension. The freeparameter of the model for the graviton case is ˜ k = k / M Pl , where M Pl is the reduced Planckscale, and we consider ˜ k = λ R and ˜ k parameters for their respective models. Production at hadron colliders is ex-pected to be dominated by gluon-gluon fusion, and we assume that the radion or graviton isproduced exclusively via this process. Due to the small branching fraction of hh → bbZZ andthe high multiplicities of the final states, the analyses presented in this paper are less sensitiveto these models compared to the previous searches. As noted in Section 1, however, certainmodels with extended electroweak sectors can produce significantly enhanced bbZZ produc-tion, while suppressing final states with Higgs boson decays to fermions and scalar bosons.Such an enhancement can be produced for example in the next-to-minimal 2HDM (N2HDM)extended Higgs sector [26, 27], where an additional real singlet is introduced in addition tothe usual two doublet Higgs bosons of the 2HDM. This analysis is further interpreted in thiscontext. The so-called broken phase is considered, wherein both the Higgs doublets and thesinglet acquire vacuum expectation values (vev) [27]. Mixing between these states produces3 CP -even Higgs bosons H , H , and H , with masses that are free parameters of the model.This search considers the nearly mass-degenerate case where the masses of the two bosons H and H are constrained to the experimental measurements of the h mass, which would be in-distinguishable from h production with current LHC data sets [11, 28, 29], but may give riseto manifestly non-SM-like rates in the case of hh production. In what is commonly referredto as Higgs boson cascade decays, H can decay to any combination of bosons H and H ,which then both can have different decay branching fractions compared to the SM Higgs bo-son. The model spectrum depends on the ratio of the vevs of the two Higgs doublets tan β ,low values of which enhance H production; the vev of the singlet, which affects the decaybranching fractions of H to H and H ; and three mixing angles, which determine the decaybranching fractions of H and H [27]. The model spectra described below are determinedusing N2HDECAY [30], and are chosen to enhance production of the bbZZ final state whilerespecting current LHC measurements of the SM h branching fractions within their experimen-tal uncertainties [5]. The gluon-gluon fusion production cross sections of H are determinedfrom the BSM Higgs boson predictions of the LHC Higgs Cross Section Working Group [5].These cross sections assume SM decay branching fractions of the Higgs boson, and changingthese branching fractions affects the production cross section. The cross sections are correctedat leading order (LO) by the ratio of the relative partial width of H in the decay to two gluonscompared to the BSM Higgs boson prediction. Enhanced (reduced) coupling of H to gluonswill enhance (reduce) the production cross section of H . The mass of the Higgs bosons H and H are set to 125 GeV, and the mass of H is generated in the range 260 ≤ m X ≤ β = α , α , α are set to 0.76, 0.48,and 1.00, respectively. For tan β = to H H , H H , and H H around 0.02, 0.29, and 0.64 respectively, branching fractions of H → bb (H → ZZ)of 0.70 (0.01), and branching fractions of H → bb (H → ZZ) of 0.42 (0.05). This representsa 33% increase in the branching fraction to bbZZ compared to SM hh decays. The correctionfactor based on the relative partial width of H to two gluons is around 3.0. For tan β = to H H , H H , and H H around 0.07, 0.22, and 0.67respectively, branching fractions of H → bb (H → ZZ) of 0.53 (0.03), and branching fractionsof H → bb (H → ZZ) of 0.58 (0.03). This represents a 5% increase in the branching fraction tobbZZ compared to SM hh decays. The correction factor based on the relative partial width ofH to two gluons is around 0.7. These corrections and branching fractions produce significantdifferences in the production rates of the bbZZ system compared to hh production both in theSM and through resonant production of radions or gravitons. The central feature of the CMS apparatus is a superconducting solenoid of 6 m internal diame-ter, providing a magnetic field of 3.8 T. Within the solenoid volume are a silicon pixel and striptracker, a lead tungstate crystal electromagnetic calorimeter (ECAL), and a brass and scintilla-tor hadron calorimeter (HCAL), each composed of a barrel and two endcap sections. Forwardcalorimeters extend the pseudorapidity coverage provided by the barrel and endcap detec-tors, where pseudorapidity is defined as η = − ln [ tan ( θ /2 )] , and θ is the polar angle. Muonsare measured in gas-ionization detectors embedded in the steel flux-return yoke outside thesolenoid. CMS uses a two-level trigger system [31]. The first level of the CMS trigger system,composed of custom hardware processors, uses information from the calorimeters and muondetectors to select the most interesting events. The high-level trigger (HLT) processor farmfurther decreases the event rate from around 100 kHz to a rate of around 1 kHz, before datastorage. A more detailed description of the CMS detector, together with a definition of thecoordinate system used and the relevant kinematic variables, can be found in Ref. [32]. The signal samples of RS1 spin-0 radion and RS1 KK spin-2 graviton narrow resonances decay-ing to a pair of Higgs bosons (X → hh) are generated at LO using M AD G RAPH MC @ NLO .The h mass is set to 125 GeV, and the X resonance mass m X is generated in the range of260–1000 GeV. In the bb (cid:96)(cid:96) νν channel the final state can be produced via either the bbZZ orbbW + W − intermediate states.The main background processes to production of a pair of Higgs bosons in the bbZZ → bb (cid:96)(cid:96) jjor bb (cid:96)(cid:96) νν final states are Z/ γ ∗ +jets and tt processes. Less significant backgrounds arise fromsingle top quark, W+jets, diboson+jets, SM Higgs boson production, and quantum chromody-namics (QCD) multijet production. Signal and background processes are modeled with simu-lations, with the exception of the QCD multijet background that is estimated using data controlregions.In the analysis using the bb (cid:96)(cid:96) jj channel, the Z/ γ ∗ +jets and W+jets processes are generatedwith M AD G RAPH MC @ NLO X F X jet merging scheme [34]. The analysis of the bb (cid:96)(cid:96) νν channel uses sam-ples of Z/ γ ∗ +jets generated with M AD G RAPH MC @ NLO at LO, with the MLM matchingscheme [35], and reweighted to account for higher order QCD and electroweak effects [36].The tt process is generated at NLO with
POWHEG
SM Higgs boson production processes are simulated at NLO either with
POWHEG or M AD -G RAPH MC @ NLO , depending on the particular channel. The diboson processes (WW+jets,WZ+jets, ZZ+jets) are simulated at NLO with M AD G RAPH MC @ NLO .The simulated samples are normalized to their best-known highest-order-QCD cross sections,either evaluated at NLO with
MCFM [43] (diboson+jets) or at next-to-next-to-leading orderwith
FEWZ γ ∗ +jets processes, which are normalized using data.The simulated samples are interfaced with PYTHIA
PYTHIA generator uses the CUETP8M1 underlying event tune [46]. The
NNPDF
EANT
Events are selected using triggers that require two muons with transverse momentum p T > p T >
23 (12) GeV for the leading (sub-leading) lepton.The particle-flow (PF) algorithm [49], which combines information from various elements ofthe CMS detector, is used to reconstruct and identify final-state particles, such as photons,electrons, muons, and charged and neutral hadrons, as individual PF objects. Combinations ofPF objects are then used to reconstruct higher-level objects such as jets and missing transversemomentum.Jets are reconstructed from the PF objects, using the anti- k T [50, 51] algorithm with a distanceparameter of R = p T - and η -dependent corrections to account for nonuniformityand nonlinearity effects of the ECAL and HCAL energy response to neutral hadrons, for thepresence of extra particles from PU, for the thresholds used in jet constituent selection, re-construction inefficiencies, and possible biases introduced by the clustering algorithm. Thesejet energy corrections are extracted from the measurement of the momentum balance in dijet,photon + jet, Z/ γ ∗ +jets, and multijet events [53]. A residual η - and p T -dependent calibrationis applied to correct for the small differences between data and simulated jets. The jets thatare candidates to be from the decay of one of the Higgs bosons and of one of the Z bosons arerequired to have p T >
20 GeV. Furthermore, jets are required to have a spatial separation of ∆ R > .1 Event reconstruction (cid:126) p missT is computed as the negative vector sum ofthe transverse momenta of all the PF candidates in an event, and its magnitude is denoted as p missT [55]. The (cid:126) p missT is modified to account for corrections to the energy scale of the recon-structed jets in the event.The candidate vertex with the largest value of summed physics-object p is taken to be theprimary pp interaction vertex. The physics objects are the jets, clustered using the jet findingalgorithm [50, 51] with the tracks assigned to candidate vertices as inputs, and the associatedmissing transverse momentum, taken as the negative vector sum of the p T of those jets.Muons are reconstructed as tracks in the muon system that are matched to the tracks re-constructed in the inner silicon tracking system [56]. The leading muon is required to have p T >
20 GeV, while the subleading muon must have p T >
15 (10) GeV in the bb (cid:96)(cid:96) νν (bb (cid:96)(cid:96) jj)channel. Muons are required to be reconstructed in the HLT fiducial volume, i.e., with | η | < p T > | η | < < | η | < (cid:96)(cid:96) jj (bb (cid:96)(cid:96) νν ) channel. InEq.(1), the sums run over charged hadrons originating from the primary vertex of the event,neutral hadrons, and photons inside a cone of radius ∆ R = √ ( ∆ φ ) + ( ∆ η ) < φ is the azimuthal angle in radians. I iso = p (cid:96) T (cid:34) charged ∑ p T + max (cid:32) neutral ∑ p T + photons ∑ p T − Corr PU (cid:33)(cid:35) (1)The isolation includes a correction for pileup effects, Corr PU . For electrons, Corr PU = ρ A eff ,where ρ is the average transverse momentum flow density, calculated using the jet areamethod [59], and A eff is the geometric area of the isolation cone times an η -dependent cor-rection factor that accounts for residual pileup effects. For muons, Corr PU = ∑ PU p T , wherethe sum runs over charged particles not associated with the primary vertex and the factor 0.5corresponds to an approximate average ratio of neutral to charged particles in the isolationcone [60].Simulated background and signal events are corrected with scale factors for differences ob-served between data and simulation, in trigger efficiencies, in lepton p T - and η -dependentidentification and isolation efficiencies, and in b tagging efficiencies. (cid:96)(cid:96) jj channel After selection of the candidate physics objects, an initial event selection is performed by re-quiring at least two same-flavor leptons (muons or electrons) in each event. The two leptonsare required to be oppositely charged. The invariant mass of the two leptons, m (cid:96)(cid:96) , is requiredto be larger than 15 GeV. Four of the jets in an event are designated as the h and Z boson de-cay products. These jets are required to have p T >
20 GeV and at least one of those must beb tagged with a minimum requirement on the b tagging discriminant, that is looser than therequirement in the final selection. We refer to this selection as the preselection.Since the signal contains two b jets from the decay of a Higgs boson, and two jets of any flavorfrom the decay of a Z boson, it is important to carefully categorize the jets in the event. Startingfrom a collection of jets identified as described above, the information from the b tagging dis-criminant, as well as the kinematic properties of the jets, are taken into account when assigningjets as each particle’s decay products.The following selection is applied to identify the b jets originating from the decay of the Higgsboson. The two jets with the highest b tagging scores above a certain threshold are assignedto the decay of the Higgs boson. If only one jet is found that meets the minimum b taggingscore value, a second jet that leads to an invariant mass closest to 125 GeV is selected. If no jetswith b tagging scores above threshold are found, the two jets whose invariant mass is closestto 125 GeV are chosen.After jets are assigned to the decay of h → bb, from the remaining jets the two jets with four-object invariant mass M ( (cid:96)(cid:96) jj ) closest to 125 GeV are assigned to the decay of the Z boson.After preselection, additional requirements are imposed. At least one of the four jets assignedas the decay products of the h or Z boson must satisfy the b tagging requirement, to increasethe signal-to-background ratio. To impose orthogonality with the bb (cid:96)(cid:96) νν decay channel, upperlimits on the p missT are imposed as follows: p missT <
40, 75, and 100 GeV for the m X of 260–350,350–650, and ≥
650 GeV, respectively. We refer to this selection as the final selection in the bb (cid:96)(cid:96) jjchannel.After the final selection, twenty-two variables that exploit the differences in kinematic and an-gular distributions between the signal and background processes are combined into a boosteddecision tree (BDT) discriminant [61]. In the m X range of 260–300 GeV, the most importantvariables are m (cid:96)(cid:96) , the separation between the leading lepton and leading b tagged jet ∆ R (cid:96) ,and the invariant mass of the pair of b tagged jets m hbb . In the m X range of 350–550 GeV, m hbb is the most important variable, while m (cid:96)(cid:96) becomes less important, and the separation betweenthe pair of leptons ∆ R (cid:96)(cid:96) gradually becomes more important when the m X increases. For the m X higher than 550 GeV, ∆ R (cid:96)(cid:96) becomes the most important variable followed by m hbb and theseparation between the pair of b tagged jets ∆ R hbb . The BDTs are configured to use stochas-tic gradient boosting with the binomial log-likelihood loss function. The software packageTMVA [58] is used for BDT implementation, training, and application.The BDT is trained using all background processes described in Section 4, excluding the mul-tijet background. In each lepton channel and for each spin hypothesis, one BDT is trained foreach simulated signal m X . In the training, signal events include samples from the two neigh-boring mass points, in addition to the targeted mass point. In total, 48 BDTs are trained. TheseBDT distributions for data and expected backgrounds are used as the final discriminating vari-able in the analysis. .3 Background estimation in the bb (cid:96)(cid:96) jj channel (cid:96)(cid:96) jj channel The main processes that can mimic the signature of the signal in the bb (cid:96)(cid:96) jj channel are Z/ γ ∗ +jetsand tt, with smaller contributions from QCD multijets, diboson+jets, W+jets, and SM Higgsboson production.The contribution from the principal background, Z/ γ ∗ +jets, is estimated with simulated eventsnormalized to the data at the preselection level in the Z boson-enriched control region 80 < m (cid:96)(cid:96) <
100 GeV. The contribution from tt is estimated in a similar manner, with the tt-enrichedcontrol region defined by m (cid:96)(cid:96) >
100 GeV, and p missT >
100 GeV. The data-to-simulation nor-malization factors derived from the two control regions are R Z = ± R tt = ± R Z = ± R tt = ± (cid:96)(cid:96) νν channel Candidate events in the bb (cid:96)(cid:96) νν channel are reconstructed from the physics objects, as describedabove. The two leptons (muons or electrons) are required to have OS, and the invariant mass ofthe two leptons, m (cid:96)(cid:96) , is required to exceed 76 GeV. One of the Higgs bosons is formed from thepair of b jets with the highest output value of the b tagging discriminant, and the second Higgsboson is reconstructed as a combination of the two charged leptons and the (cid:126) p missT , representingthe visible and invisible decays products, respectively, of the pair of Z bosons. The requirementon m (cid:96)(cid:96) reduces the contribution from resonant X → hh production in the bbWW final state,and makes this measurement orthogonal to a previous bbWW search [19], where only eventswith m (cid:96)(cid:96) below 76 GeV were considered.For the Higgs boson decaying to a pair of Z bosons, the two neutrinos are not reconstructedin the detector, and a pseudo invariant mass of the Higgs boson is used to approximate theincomplete momentum four-vector of the H. The pseudo invariant mass is formed from themomenta of the two charged leptons coming from one of the Z bosons and the four-vector ( p missT , (cid:126) p missT ) approximating that of the two-neutrino system coming from the other of the Zbosons, where the z component of (cid:126) p missT is zero. While the true invariant mass of the pair ofneutrinos is not zero but is equal to the invariant mass of the parent Z boson, that boson is offthe mass shell and has relatively low mass.In order to suppress the backgrounds from the Z/ γ ∗ +jets and QCD multijet processes as wellas from the SM Higgs boson production via the Zh process, a requirement is imposed on theminimum p missT , which is 40 (75) GeV for the m X of 260–300 (350–600) GeV, and 100 GeV for higher m X .Three regions, a signal region (SR) and two control regions (CRs), are further defined using m (cid:96)(cid:96) and the invariant mass m hbb of the two b jets. The SR is defined by the requirements 76 < m (cid:96)(cid:96) <
106 GeV and 90 < m hbb <
150 GeV. A first CR, dominated by tt events, is defined by m (cid:96)(cid:96) >
106 GeV and 90 < m hbb <
150 GeV. A second CR, enriched in Z/ γ ∗ +jets events, isdefined by requiring 20 < m hbb <
90 GeV or m hbb >
150 GeV, and 76 < m (cid:96)(cid:96) <
106 GeV. The twoCRs and the SR are used to estimate the backgrounds in the SR via a simultaneous fit.To further differentiate signal from backgrounds in the SR, a BDT discriminant is trained us-ing all simulated signal and background processes described in Section 4. Of the nine inputdistributions to the BDT, the most important variables in the low-mass range are the separa-tion between the pair of b tagged jets ∆ R hbb , p missT , and m hbb . In the high-mass region, m hbb and ∆ R hbb are also the most significant, together with the separation between the pair of chargedleptons ∆ R (cid:96)(cid:96) , which becomes more important as the resonance mass increases. Two BDTs aretrained for each lepton channel and each resonance spin hypothesis, one for m X in the range of250–450 GeV, and another one for the m X above 450 GeV. A minimum BDT value is requiredfor candidates in the SR, optimized for each narrow m X hypothesis to yield the best 95% con-fidence level (CL) expected upper limit on resonant production. The BDTs are configured withthe same classification and loss function parameters described in Section 5.2.Finally, a quantity closely correlated with the energy-momentum four-vector of the hh systemis constructed as the vector sum of the of the two leptons, two b jets, and the four-vector formedas ( p missT , (cid:126) p missT ) for the neutrinos, as described above. Subsequently, the pseudo transversemass of the hh system is defined as (cid:101) M T ( hh ) = √ E − p z , where E and p z are the energy andthe z component of the combined four-vector.The (cid:101) M T ( hh ) distributions for data and expected backgrounds, in the combined signal and CRs,will be used as the final discriminating variable in the analysis.After the event selection in this channel is applied, the signal hh events in the SR come predom-inantly from the decays with the bbZZ intermediate state (80%) with a smaller contributionfrom the bbW + W − intermediate state (20%). Both intermediate states are used to calculate thelimit on pp → X → hh in the bb (cid:96)(cid:96) νν channel. (cid:96)(cid:96) νν channel The dominant sources of background in the bb (cid:96)(cid:96) νν channel are tt and Z/ γ ∗ +jets production.Several other background processes contribute, including single top quark and diboson pro-duction, and SM Higgs boson production in association with a Z boson. While these are typ-ically minor backgrounds, their contribution can vary over the m X range. The QCD multijetbackground is negligible across the full mass range because of the stringent selection on m (cid:96)(cid:96) .The event yields in the signal and two CRs, which are dominated by tt and Z/ γ ∗ +jets events,are determined from data. The corresponding normalizations of the simulated (cid:101) M T ( hh ) distri-butions are free parameters in the simultaneous fit of all three regions. The remaining back-grounds are estimated from simulation and normalized according to their theoretical cross sec-tions. The dominant source of systematic uncertainty in this analysis is the jet energy scale (JES)uncertainty, which is of the order of a few percent and is estimated as a function of jet p T and η [53]. The η -dependent jet energy resolution (JER) correction factors are varied by ± p missT . A residual p missT uncertainty of 3% is applied in thebb (cid:96)(cid:96) νν channel to take into account the effect, at low p missT , of the unclustered energy fromneutral hadrons and photons that do not belong to any jet, and from jets with p T <
10 GeV.An uncertainty of 2% per muon in the muon reconstruction, identification, and isolation re-quirements, as well as a 1% per muon uncertainty in the muon HLT efficiency are assigned [56].A per-muon uncertainty due to measured differences of tracking efficiency in data and simu-lation is estimated to be 0.5% for muon p T <
300 GeV and 1.0% for muon p T >
300 GeV [62].Per-electron uncertainties in the efficiency for electron trigger, identification and isolation re-quirements, estimated by varying the scale factors within their uncertainties, are applied. Theuncertainties in the efficiency scale factors are generally <
2% for trigger and <
3% for identi-fication and isolation [57]. The effect of the variations on the yield of the total background is < γ ∗ +jets and tt background estimates result inuncertainties on the data-derived normalization factors in the bb (cid:96)(cid:96) jj channel.An uncertainty of 2.5% is assigned to the determination of the integrated luminosity [64]. Theuncertainty in the PU condition and modeling is assessed by varying the inelastic pp crosssection from its central value by ± Results are obtained by performing a binned maximum likelihood fit of the BDT distributionsfor the bb (cid:96)(cid:96) jj channel, and of the hh pseudo transverse mass simultaneously in the SR and twoCRs for the bb (cid:96)(cid:96) νν channel.The data and background predictions at final selection level in the bb (cid:96)(cid:96) jj channel are shownin Fig. 1, for the distributions of the BDT discriminant for signal masses of 500 and 1000 GeV,in the muon and electron final states. Studies performed on all 48 BDT discriminants showstability of the trainings with no evidence of bias or overtraining.0
3% for identi-fication and isolation [57]. The effect of the variations on the yield of the total background is < γ ∗ +jets and tt background estimates result inuncertainties on the data-derived normalization factors in the bb (cid:96)(cid:96) jj channel.An uncertainty of 2.5% is assigned to the determination of the integrated luminosity [64]. Theuncertainty in the PU condition and modeling is assessed by varying the inelastic pp crosssection from its central value by ± Results are obtained by performing a binned maximum likelihood fit of the BDT distributionsfor the bb (cid:96)(cid:96) jj channel, and of the hh pseudo transverse mass simultaneously in the SR and twoCRs for the bb (cid:96)(cid:96) νν channel.The data and background predictions at final selection level in the bb (cid:96)(cid:96) jj channel are shownin Fig. 1, for the distributions of the BDT discriminant for signal masses of 500 and 1000 GeV,in the muon and electron final states. Studies performed on all 48 BDT discriminants showstability of the trainings with no evidence of bias or overtraining.0 =500 GeV) X BDT discriminant (m - - - - - E v en t s / b i n -
10 110 Datatt * + jets g Z/QCD Other backgroundSM Higgs boson = 500 GeV (1 pb) [x250]
X, spin 0 m syst) ¯ Unc. (stat jj channel mm bb (13 TeV) -1 CMS =500 GeV) X BDT discriminant (m - - - - - D a t a / M C =1000 GeV) X BDT discriminant (m - - - - - E v en t s / b i n -
10 110 Datatt * + jets g Z/QCD Other backgroundSM Higgs boson = 1000 GeV (1 pb) [x250]
X, spin 0 m syst) ¯ Unc. (stat jj channel mm bb (13 TeV) -1 CMS =1000 GeV) X BDT discriminant (m - - - - - D a t a / M C =500 GeV) X BDT discriminant (m - - - - - E v en t s / b i n -
10 110 Datatt * + jets g Z/QCD Other backgroundSM Higgs boson = 500 GeV (1 pb) [x250]
X, spin 0 m syst) ¯ Unc. (stat bbeejj channel (13 TeV) -1 CMS =500 GeV) X BDT discriminant (m - - - - - D a t a / M C =1000 GeV) X BDT discriminant (m - - - - - E v en t s / b i n -
10 110 Datatt * + jets g Z/QCD Other backgroundSM Higgs boson = 1000 GeV (1 pb) [x250]
X, spin 0 m syst) ¯ Unc. (stat bbeejj channel (13 TeV) -1 CMS =1000 GeV) X BDT discriminant (m - - - - - D a t a / M C Figure 1: Comparison of the BDT discriminant for m X =
500 and 1000 GeV after the finalselection in the muon (upper row) and electron (lower row) final states of the bb (cid:96)(cid:96) jj channel.The signals of an RS1 radion with mass of 500 (left) and 1000 GeV (right) are normalized to across section of 1 pb for the pp → X → hh process. The shaded area represents the combinedstatistical and systematic uncertainties in the background estimate. E v en t s / b i n Datatt * + jets g Z/Single t DibosonsSM Higgs boson(1 pb) [x1000] = 300 GeV
X, spin 2 m syst) ¯ Unc. (stat (hh) [GeV] T M~
200 300 400 500 600 700 800 900 1000 1100 D a t a / M C (13 TeV) -1 CMS * + jets g Control region Z/ channel nnmm bb E v en t s / b i n Datatt * + jets g Z/ Single tDibosons syst) ¯ Unc. (stat (hh) [GeV] T M~
200 300 400 500 600 700 800 900 1000 1100 D a t a / M C (13 TeV) -1 CMS tControl region t channel nnmm bb E v en t s / b i n Datatt * + jets g Z/Single t DibosonsSM Higgs boson(1 pb) [x400] = 300 GeV
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Signal region channel nnmm bb E v en t s / b i n Datatt * + jets g Z/Single t DibosonsSM Higgs boson(1 pb) [x1000] = 300 GeV
X, spin 2 m syst) ¯ Unc. (stat (hh) [GeV] T M~
200 300 400 500 600 700 800 900 1000 1100 D a t a / M C (13 TeV) -1 CMS * + jets g Control region Z/ channel nn bbee E v en t s / b i n Datatt * + jets g Z/ Single t syst) ¯ Unc. (stat (hh) [GeV] T M~
200 300 400 500 600 700 800 900 1000 1100 D a t a / M C (13 TeV) -1 CMS tControl region t channel nn bbee E v en t s / b i n Datatt * + jets g Z/Single t DibosonsSM Higgs boson(1 pb) [x400] = 300 GeV
X, spin 2 m syst) ¯ Unc. (stat (hh) [GeV] T M~
200 300 400 500 600 700 800 900 1000 1100 D a t a / M C (13 TeV) -1 CMS
Signal region channel nn bbee Figure 2: Pseudo transverse mass of the reconstructed hh candidates, in the bb (cid:96)(cid:96) νν channel,for data, simulated spin-2 RS1 graviton signal with a mass of 300 GeV, and simulated back-grounds scaled according to the fit results. The upper and lower rows correspond to the muonand electrons channels. For each row, the left and middle plots are for the Z/ γ ∗ +jets and ttcontrol regions, and the right is for the signal region. The signals are normalized to 1 pb for thepp → X → hh process. The shaded area represents the combined statistical and systematicuncertainties in the background estimate.Figure 2 shows the hh pseudo transverse mass distributions in the data, background estimates,and spin-2 RS1 graviton for the 300 GeV mass hypothesis, after the final selection in the bb (cid:96)(cid:96) νν channel.The systematic uncertainties are represented by nuisance parameters that are varied in the fitaccording to their probability density functions, prescribed as follows. A log-normal proba-bility density function is assumed for the nuisance parameters affecting the event yields ofthe various background contributions, whereas systematic uncertainties that affect the distri-butions are represented by nuisance parameters whose variation is a vertical interpolation ineach bin with a sixth-order polynomial for upward and downward shifts of one standard de-viation, and linearly outside of that [66].The statistical uncertainty from the limited number of events in the simulated samples is takeninto account, for each bin of the discriminant distributions, by assigning a nuisance parameterto scale the sum of the process yields in that bin according to the statistical uncertainty usingthe Barlow–Beeston “lite” prescription [67, 68].In both channels the data distributions are well reproduced by the SM background processes.Upper limits on the resonance production cross section are set, using the asymptotic CL s mod-ified frequentist approach [69–71].The observed and expected 95% CL upper limits on σ ( pp → X → HH → bbZZ ) in the bb (cid:96)(cid:96) jj and bb (cid:96)(cid:96) νν channels as a function of m X are shown in Fig. 3, together with the NLO predictionsfor the RS1 radion, RS1 KK graviton, and N2HDM resonance production cross sections, whereH can represent either the SM Higgs boson or an additional Higgs boson from an extendedelectroweak sector. As two different BDTs are defined for the search in the low- and high-massranges of the bb (cid:96)(cid:96) νν channel, the limit calculation is performed with both of the BDTs at theboundary of the two ranges, around 450 GeV, where a discontinuity is seen.Combined 95% CL upper limits from both channels on σ ( pp → X → HH → bbZZ) as afunction of m X , are shown in Fig. 4, together with the theoretical predictions for the RS1 radionand RS1 KK graviton. In the m X range between 260 and 1000 GeV, limits on the productioncross section times branching fraction of RS1 radion and RS1 KK graviton range from 0.1 to5.0 and 0.1 to 3.6 pb, respectively. In the spin-0 case, the predictions of the N2HDM modelwith tan β = → H H /H H /H H → bbZZ decays. Inthe tan β = in the m X range of 360–620 GeV. Incomparison to previous searches in other channels, we achieve a sensitivity to the RS1 radionand RS1 KK graviton models that is consistent with the lower value of the hh branching fractionin the bbZZ channel relative to the other channels.Finally, the results are also interpreted as a function of both the m X and λ R (˜ k ) for the radion(graviton) case, with λ R < k > m X considered, as shown inFig. 5. A search for the production of a narrow-width resonance decaying into a pair of Higgs bosonsdecaying into the bbZZ channel is presented. The analysis is based on data collected withthe CMS detector during 2016, in proton-proton collisions at the LHC, corresponding to anintegrated luminosity of 35.9 fb − . The final states considered are the ones where one of theZ bosons decays into a pair of muons or electrons, and the other Z boson decays either to apair of quarks or a pair of neutrinos. Upper limits at 95% confidence level are placed on theproduction of narrow-width spin-0 or spin-2 particles decaying to a pair of Higgs bosons, inmodels with and without an extended Higgs sector. For a resonance mass range between 260and 1000 GeV, limits on the production cross section times branching fraction of a spin-0 andspin-2 resonance range from 0.1 to 5.0 pb and 0.1 to 3.6 pb, respectively. These results set limitsin parameter space in bulk Randall–Sundrum radion, Kaluza–Klein excitation of the graviton,and N2HDM models. For specific choices of parameters the N2HDM can be excluded in a massrange between 360 and 620 GeV for a resonance decaying to two Higgs bosons. This is the firstsearch for Higgs boson resonant pair production in the bbZZ channel. Acknowledgments
We congratulate our colleagues in the CERN accelerator departments for the excellent perfor-mance of the LHC and thank the technical and administrative staffs at CERN and at other CMSinstitutes for their contributions to the success of the CMS effort. In addition, we gratefullyacknowledge the computing centers and personnel of the Worldwide LHC Computing Gridfor delivering so effectively the computing infrastructure essential to our analyses. Finally,we acknowledge the enduring support for the construction and operation of the LHC and theCMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRSand FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria);CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia);
300 400 500 600 700 800 900 1000 [GeV]
X, spin 0 m - -
10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on Observed (lljj)Median expected68% expected95% expected hh fi RS1 Radion ) = 0.5) b bbZZ (tan( fi N2HDM H3 ) = 2.0) b bbZZ (tan( fi N2HDM H3 (13 TeV) -1 CMS
Observed (lljj)Median expected68% expected95% expected hh fi RS1 Radion ) = 0.5) b bbZZ (tan( fi N2HDM H3 ) = 2.0) b bbZZ (tan( fi N2HDM H3
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10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on Observed (lljj)Median expected68% expected95% expected hh fi RS1 KK Graviton (13 TeV) -1 CMS
Observed (lljj)Median expected68% expected95% expected hh fi RS1 KK Graviton
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10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on (13 TeV) -1 CMS ) nn Observed (llMedian expected68% expected95% expected hh fi RS1 Radion ) = 0.5) b bbZZ (tan( fi N2HDM H3 ) = 2.0) b bbZZ (tan( fi N2HDM H3
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10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on (13 TeV) -1 CMS ) nn Observed (llMedian expected68% expected95% expected hh fi RS1 KK Graviton
Figure 3: Expected (black dashed line) and observed (black solid line) limits on the cross sec-tion of resonant HH production times the branching fraction of HH → bbZZ as a functionof the resonance mass for the bb (cid:96)(cid:96) jj (upper row) and bb (cid:96)(cid:96) νν (lower row) channels, where Hcan represent either the SM Higgs boson or an additional Higgs boson from an extended elec-troweak sector. The spin-0 case is shown on the left and the spin-2 case is shown on the right.The red solid line shows the theoretical prediction for the cross section of an RS1 radion with λ R = kL =
35 (left) and an RS1 KK graviton with ˜ k = → H H /H H /H H → bbZZ in theN2HDM formulation, with tan β = ( ) , the scalar H vev set to 45 GeV, and the mixingangles α , α , α set to 0.76, 0.48, and 1.00, respectively. The correction factor based on the rela-tive partial width of H to two gluons is around 3.0 (0.7) for tan β = ( ) . In the lower row,the vertical black dashed line indicates the resonance mass of 450 GeV, a mass point where theBDT used in the analysis is switched from the one trained for low mass resonance to the onetrained for high mass resonance.
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X, spin 0 m - -
10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll 68% expected95% expected hh fi RS1 Radion ) = 0.5) b bbZZ (tan( fi N2HDM H3 ) = 2.0) b bbZZ (tan( fi N2HDM H3 (13 TeV) -1 CMS
ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll 68% expected95% expected hh fi RS1 Radion ) = 0.5) b bbZZ (tan( fi N2HDM H3 ) = 2.0) b bbZZ (tan( fi N2HDM H3
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X, spin 2 m - -
10 110 ZZ ) [ pb ] b b fi HH ) B ( HH fi X , s p i n fi ( pp s % C L li m i t on ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll 68% expected95% expected hh fi RS1 KK Graviton (13 TeV) -1 CMS
ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll 68% expected95% expected hh fi RS1 KK Graviton
Figure 4: Expected (black dashed line) and observed (black solid line) limits on the cross sec-tion of resonant HH production times the branching fraction of HH → bbZZ as a functionof the mass of the resonance for the combination of the bb (cid:96)(cid:96) jj and bb (cid:96)(cid:96) νν channels, where Hcan represent either the SM Higgs boson or an additional Higgs boson from an extended elec-troweak sector. The spin-0 case is shown on the left and the spin-2 case is shown on the right.The expected limits for each individual channel are shown with a red dashed line for the bb (cid:96)(cid:96) jjchannel and blue dashed line for the bb (cid:96)(cid:96) νν channel. The red solid lines show the theoreticalprediction for the cross section of an RS1 radion with λ R = kL =
35 (left) and an RS1KK graviton with ˜ k = → H H /H H /H H → bbZZ in the N2HDM formulation, with tan β = ( ) , thescalar H vev set to 45 GeV, and the mixing angles α , α , α set to 0.76, 0.48, and 1.00, respec-tively. The correction factor based on the relative partial width of H to two gluons is around3.0 (0.7) for tan β = ( ) . The vertical black dashed line indicates the resonance mass of450 GeV, a mass point where the BDT used in the analysis is switched from the one trained forlow mass resonance to the one trained for high mass resonance. [GeV] X, spin 0 m
300 400 500 600 700 800 900 1000 [ T e V ] R l - -
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ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll68% expected95% expectedExcluded Region (13 TeV) -1 CMS
ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll68% expected95% expectedExcluded Region [GeV]
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ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll68% expected95% expectedExcluded Region (13 TeV) -1 CMS
ObservedMedian expectedMedian expected (lljj) ) nn Median expected (ll68% expected95% expectedExcluded Region
Figure 5: The expected and observed exclusion limits at 95% CL on the RS1 radion with kL = λ R (˜ k ) versus mass plane for the individual bb (cid:96)(cid:96) jj (red)and bb (cid:96)(cid:96) νν (blue) channels and their combination (black). The dark green and light yellowexpected limit uncertainty bands represent the 68 and 95% confidence intervals. Solid linesrepresent the observed limits and dashed lines represent the expected limits. The shaded regionis excluded by the current limits. The vertical black dashed line indicates the resonance massof 450 GeV, a mass point where the BDT used in the bb (cid:96)(cid:96) νν analysis is switched from the onetrained for low mass resonance to the one trained for high mass resonance.RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT and ERDF (Estonia); Academyof Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF(Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland);INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM(Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Mon-tenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal);JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI,CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland);MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey);NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).Individuals have received support from the Marie-Curie program and the European ResearchCouncil and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union);the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Founda-tion; the Belgian Federal Science Policy Office; the Fonds pour la Formation `a la Recherchedans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie doorWetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the“Excellence of Science – EOS” – be.h project n. 30820817; the Beijing Municipal Science &Technology Commission, No. Z191100007219010; the Ministry of Education, Youth and Sports(MEYS) of the Czech Republic; the Deutsche Forschungsgemeinschaft (DFG) under Germany’sExcellence Strategy – EXC 2121 “Quantum Universe” – 390833306; the Lend ¨ulet (“Momen-tum”) Program and the J´anos Bolyai Research Scholarship of the Hungarian Academy of Sci-ences, the New National Excellence Program ´UNKP, the NKFIA research grants 123842, 123959,124845, 124850, 125105, 128713, 128786, and 129058 (Hungary); the Council of Science and In-dustrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program ofthe Ministry of Science and Higher Education, the National Science Center (Poland), contractsHarmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities ResearchProgram by Qatar National Research Fund; the Ministry of Science and Higher Education,project no. 02.a03.21.0005 (Russia); the Tomsk Polytechnic University Competitiveness En-hancement Program and “Nauka” Project FSWW-2020-0008 (Russia); the Programa Estatal deFomento de la Investigaci ´on Cient´ıfica y T´ecnica de Excelencia Mar´ıa de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aris-teia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund forPostdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its2nd Century Project Advancement Project (Thailand); the Kavli Foundation; the Nvidia Cor-poration; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the WestonHavens Foundation (USA). References [1] CMS Collaboration, “Observation of a new boson at a mass of 125 GeV with the CMSexperiment at the LHC”,
Phys. Lett. B (2012) 30, doi:10.1016/j.physletb.2012.08.021 , arXiv:1207.7235 .[2] ATLAS Collaboration, “Observation of a new particle in the search for the standardmodel Higgs boson with the ATLAS detector at the LHC”, Phys. Lett. B (2012) 1, doi:10.1016/j.physletb.2012.08.020 , arXiv:1207.7214 .[3] CMS Collaboration, “A new boson with a mass of 125 GeV observed with the CMSexperiment at the Large Hadron Collider”, Science (2012) 1569, doi:10.1126/science.1230816 .[4] ATLAS Collaboration, “A particle consistent with the Higgs boson observed with theATLAS detector at the Large Hadron Collider”,
Science (2012) 1576, doi:10.1126/science.1232005 .[5] LHC Higgs Cross Section Working Group, “Handbook of LHC Higgs cross sections: 4.Deciphering the nature of the Higgs sector”,
CERN (2016) doi:10.23731/CYRM-2017-002 , arXiv:1610.07922 .[6] Y. Tang, “Implications of LHC searches for massive graviton”, JHEP (2012) 078, doi:10.1007/JHEP08(2012)078 , arXiv:1206.6949 .[7] K. Cheung, “Phenomenology of the radion in the Randall-Sundrum scenario”, Phys. Rev.D (2001) 056007, doi:10.1103/PhysRevD.63.056007 , arXiv:hep-ph/0009232 .[8] N. Kumar and S. P. Martin, “LHC search for di-Higgs decays of stoponium and otherscalars in events with two photons and two bottom jets”, Phys. Rev. D (2014) 055007, doi:10.1103/PhysRevD.90.055007 , arXiv:1404.0996 .[9] G. C. Branco et al., “Theory and phenomenology of two-Higgs-doublet models”, Phys.Rept. (2012) 1, doi:10.1016/j.physrep.2012.02.002 , arXiv:1106.0034 .[10] N. Craig, J. Galloway, and S. Thomas, “Searching for signs of the second Higgs doublet”,(2013). arXiv:1305.2424 . eferences [11] M. Carena et al., “Alignment limit of the NMSSM Higgs sector”, Phys. Rev. D (2016)035013, doi:10.1103/PhysRevD.93.035013 , arXiv:1510.09137 .[12] S. AbdusSalam, “Testing Higgs boson scenarios in the phenomenological NMSSM”, Eur.Phys. J. C (2019) 442, doi:10.1140/epjc/s10052-019-6953-7 , arXiv:1710.10785 .[13] E. Bagnaschi et al., “Benchmark scenarios for low tan β in the MSSM”, Technical ReportLHCHXSWG-2015-002, 2015.[14] CMS Collaboration, “Search for resonant pair production of Higgs bosons decaying tobottom quark-antiquark pairs in proton-proton collisions at 13 TeV”, JHEP (2018) 152, doi:10.1007/JHEP08(2018)152 , arXiv:1806.03548 .[15] ATLAS Collaboration, “Search for pair production of Higgs bosons in the bbbb final stateusing proton-proton collisions at √ s =
13 TeV with the ATLAS detector”,
JHEP (2019) 30, doi:10.1007/JHEP01(2019)030 , arXiv:1804.06174 .[16] CMS Collaboration, “Search for Higgs boson pair production in events with two bottomquarks and two tau leptons in proton-proton collisions at √ s =13 TeV”, Phys. Lett. B (2018) 101, doi:10.1016/j.physletb.2018.01.001 , arXiv:1707.02909 .[17] ATLAS Collaboration, “Combination of searches for heavy resonances decaying intobosonic and leptonic final states using 36 fb − of proton-proton collision data at √ s = Phys. Rev. D (2018) 052008, doi:10.1103/PhysRevD.98.052008 , arXiv:1808.02380 .[18] CMS Collaboration, “Search for Higgs boson pair production in the γγ bb final state in ppcollisions at √ s =
13 TeV”,
Phys. Lett. B (2019) 7, doi:10.1016/j.physletb.2018.10.056 , arXiv:1806.00408 .[19] CMS Collaboration, “Search for resonant and nonresonant Higgs boson pair productionin the bb (cid:96) ν (cid:96) ν final state in proton-proton collisions at √ s =
13 TeV”,
JHEP (2018) 54, doi:10.1007/JHEP01(2018)054 , arXiv:1708.04188 .[20] L. Randall and R. Sundrum, “A large mass hierarchy from a small extra dimension”, Phys. Rev. Lett. (1999) 3370, doi:10.1103/PhysRevLett.83.3370 , arXiv:hep-ph/9905221 .[21] W. D. Goldberger and M. B. Wise, “Modulus stabilization with bulk fields”, Phys. Rev.Lett. (1999) 4922, doi:10.1103/PhysRevLett.83.4922 , arXiv:hep-ph/9907447 .[22] O. DeWolfe, D. Z. Freedman, S. S. Gubser, and A. Karch, “Modeling the fifth-dimensionwith scalars and gravity”, Phys. Rev. D (2000) 046008, doi:10.1103/PhysRevD.62.046008 , arXiv:hep-th/9909134 .[23] C. Csaki, M. Graesser, L. Randall, and J. Terning, “Cosmology of brane models withradion stabilization”, Phys. Rev. D (2000) 045015, doi:10.1103/PhysRevD.62.045015 , arXiv:hep-ph/9911406 .[24] C. Csaki, J. Hubisz, and S. J. Lee, “Radion phenomenology in realistic warped spacemodels”, Phys. Rev. D (2007) 125015, doi:10.1103/PhysRevD.76.125015 , arXiv:0705.3844 . [25] A. Oliveira, “Gravity particles from warped extra dimensions, predictions for LHC”,(2014). arXiv:1404.0102 .[26] C.-Y. Chen, M. Freid, and M. Sher, “Next-to-minimal two Higgs doublet model”, Phys.Rev. D (2014) 075009, doi:10.1103/PhysRevD.89.075009 , arXiv:1312.3949 .[27] M. Muhlleitner, M. O. P. Sampaio, R. Santos, and J. Wittbrodt, “The N2HDM underTheoretical and Experimental Scrutiny”, JHEP (2017) 094, doi:10.1007/JHEP03(2017)094 , arXiv:1612.01309 .[28] L. Bian et al., “Future prospects of mass-degenerate Higgs bosons in the CP-conservingtwo-Higgs-doublet model”, Phys. Rev. D (2018) 115007, doi:10.1103/PhysRevD.97.115007 , arXiv:1712.01299 .[29] P. M. Ferreira, R. Santos, H. E. Haber, and J. P. Silva, “Mass-degenerate Higgs bosons at125 GeV in the two-Higgs-doublet model”, Phys. Rev. D (2013) 055009, doi:10.1103/PhysRevD.87.055009 , arXiv:1211.3131 .[30] I. Engeln, M. M ¨uhlleitner, and J. Wittbrodt, “N2HDECAY: Higgs boson decays in thedifferent phases of the N2HDM”, Comput. Phys. Commun. (2019) 256, doi:10.1016/j.cpc.2018.07.020 , arXiv:1805.00966 .[31] CMS Collaboration, “The CMS trigger system”, JINST (2017) 1020, doi:10.1088/1748-0221/12/01/P01020 , arXiv:1609.02366 .[32] CMS Collaboration, “The CMS experiment at the CERN LHC”, JINST (2008) S08004, doi:10.1088/1748-0221/3/08/S08004 .[33] J. Alwall et al., “The automated computation of tree-level and next-to-leading orderdifferential cross sections, and their matching to parton shower simulations”, JHEP (2014) 079, doi:10.1007/JHEP07(2014)079 , arXiv:1405.0301 .[34] R. Frederix and S. Frixione, “Merging meets matching in MC@NLO”, JHEP (2012)061, doi:10.1007/JHEP12(2012)061 , arXiv:1209.6215 .[35] J. Alwall et al., “Comparative study of various algorithms for the merging of partonshowers and matrix elements in hadronic collisions”, Eur. Phys. J. C (2008) 473, doi:10.1140/epjc/s10052-007-0490-5 , arXiv:0706.2569 .[36] S. Kallweit et al., “NLO QCD+EW predictions for V+jets including off-shell vector-bosondecays and multijet merging”, JHEP (2016) 021, doi:10.1007/JHEP04(2016)021 , arXiv:1511.08692 .[37] P. Nason, “A new method for combining NLO QCD with shower Monte Carloalgorithms”, JHEP (2004) 040, doi:10.1088/1126-6708/2004/11/040 , arXiv:hep-ph/0409146 .[38] S. Frixione, P. Nason, and C. Oleari, “Matching NLO QCD computations with PartonShower simulations: the POWHEG method”, JHEP (2007) 070, doi:10.1088/1126-6708/2007/11/070 , arXiv:0709.2092 .[39] S. Alioli, P. Nason, C. Oleari, and E. Re, “A general framework for implementing NLOcalculations in shower Monte Carlo programs: the POWHEG BOX”, JHEP (2010) 043, doi:10.1007/JHEP06(2010)043 , arXiv:1002.2581 . eferences [40] S. Alioli, P. Nason, C. Oleari, and E. Re, “NLO single-top production matched withshower in POWHEG: s- and t-channel contributions”, JHEP (2009) 111, doi:10.1088/1126-6708/2009/09/111 , arXiv:0907.4076 . [Erratum: doi:10.1007/JHEP02(2010)011 ].[41] E. Re, “Single-top Wt-channel production matched with parton showers using thePOWHEG method”, Eur. Phys. J. C (2011) 1547, doi:10.1140/epjc/s10052-011-1547-z , arXiv:1009.2450 .[42] S. Alioli, P. Nason, C. Oleari, and E. Re, “NLO higgs boson production via gluon fusionmatched with shower in POWHEG”, JHEP (2009) 002, doi:10.1088/1126-6708/2009/04/002 , arXiv:0812.0578 .[43] J. M. Campbell and R. K. Ellis, “MCFM for the Tevatron and the LHC”, Nucl. Phys. Proc.Suppl. (2010) 10, doi:10.1016/j.nuclphysbps.2010.08.011 , arXiv:1007.3492 .[44] Y. Li and F. Petriello, “Combining QCD and electroweak corrections to dileptonproduction in FEWZ”, Phys. Rev. D (2012) 094034, doi:10.1103/PhysRevD.86.094034 , arXiv:1208.5967 .[45] T. Sj ¨ostrand et al., “An introduction to PYTHIA 8.2”, Comput. Phys. Commun. (2015)159, doi:10.1016/j.cpc.2015.01.024 , arXiv:1410.3012 .[46] CMS Collaboration, “Event generator tunes obtained from underlying event andmultiparton scattering measurements”, Eur. Phys. J. C (2016) 155, doi:10.1140/epjc/s10052-016-3988-x , arXiv:1512.00815 .[47] NNPDF Collaboration, “Parton distributions for the LHC Run II”, JHEP (2015) 040, doi:10.1007/JHEP04(2015)040 , arXiv:1410.8849 .[48] GEANT4 Collaboration, “GEANT4—a simulation toolkit”, Nucl. Instrum. Meth. A (2003) 250, doi:10.1016/S0168-9002(03)01368-8 .[49] CMS Collaboration, “Particle-flow reconstruction and global event description with theCMS detector”,
JINST (2017) 10003, doi:10.1088/1748-0221/12/10/P10003 , arXiv:1706.04965 .[50] M. Cacciari, G. P. Salam, and G. Soyez, “The anti- k T jet clustering algorithm”, JHEP (2008) 063, doi:10.1088/1126-6708/2008/04/063 , arXiv:0802.1189 .[51] M. Cacciari, G. P. Salam, and G. Soyez, “FastJet user manual”, Eur. Phys. J. C (2012)1896, doi:10.1140/epjc/s10052-012-1896-2 , arXiv:1111.6097 .[52] CMS Collaboration, “Jet algorithms performance in 13 TeV data”, CMS Physics AnalysisSummary CMS-PAS-JME-16-003, 2017.[53] CMS Collaboration, “Jet energy scale and resolution in the CMS experiment in ppcollisions at 8 TeV”, JINST (2017) P02014, doi:10.1088/1748-0221/12/02/P02014 , arXiv:1607.03663 .[54] CMS Collaboration, “Identification of heavy-flavour jets with the CMS detector in ppcollisions at 13 TeV”, JINST (2018) P05011, doi:10.1088/1748-0221/13/05/P05011 , arXiv:1712.07158 .0
JINST (2017) 10003, doi:10.1088/1748-0221/12/10/P10003 , arXiv:1706.04965 .[50] M. Cacciari, G. P. Salam, and G. Soyez, “The anti- k T jet clustering algorithm”, JHEP (2008) 063, doi:10.1088/1126-6708/2008/04/063 , arXiv:0802.1189 .[51] M. Cacciari, G. P. Salam, and G. Soyez, “FastJet user manual”, Eur. Phys. J. C (2012)1896, doi:10.1140/epjc/s10052-012-1896-2 , arXiv:1111.6097 .[52] CMS Collaboration, “Jet algorithms performance in 13 TeV data”, CMS Physics AnalysisSummary CMS-PAS-JME-16-003, 2017.[53] CMS Collaboration, “Jet energy scale and resolution in the CMS experiment in ppcollisions at 8 TeV”, JINST (2017) P02014, doi:10.1088/1748-0221/12/02/P02014 , arXiv:1607.03663 .[54] CMS Collaboration, “Identification of heavy-flavour jets with the CMS detector in ppcollisions at 13 TeV”, JINST (2018) P05011, doi:10.1088/1748-0221/13/05/P05011 , arXiv:1712.07158 .0 [55] CMS Collaboration, “Performance of missing transverse momentum reconstruction inproton-proton collisions at √ s =
13 TeV using the CMS detector”,
JINST (2019)P07004, doi:10.1088/1748-0221/14/07/P07004 , arXiv:1903.06078 .[56] CMS Collaboration, “Performance of the CMS muon detector and muon reconstructionwith proton-proton collisions at √ s =
13 TeV”,
JINST (2018) P06015, doi:10.1088/1748-0221/13/06/P06015 , arXiv:1804.04528 .[57] CMS Collaboration, “Performance of electron reconstruction and selection with the CMSdetector in proton-proton collisions at √ s = 8 TeV”, JINST (2015) P06005, doi:10.1088/1748-0221/10/06/P06005 , arXiv:1502.02701 .[58] H. Voss, A. H ¨ocker, J. Stelzer, and F. Tegenfeldt, “TMVA, the toolkit for multivariate dataanalysis with ROOT”, in XIth International Workshop on Advanced Computing and AnalysisTechniques in Physics Research (ACAT) , p. 40. 2007. arXiv:physics/0703039 .[PoS(ACAT)040]. doi:10.22323/1.050.0040 .[59] M. Cacciari and G. P. Salam, “Pileup subtraction using jet areas”,
Phys. Lett. B (2008)119, doi:10.1016/j.physletb.2007.09.077 , arXiv:0707.1378 .[60] CMS Collaboration, “Commissioning of the particle flow reconstruction inminimum-bias and jet events from pp collisions at 7 TeV”, CMS Physics AnalysisSummary CMS-PAS-PFT-10-002, 2010.[61] J. H. Friedman, “Greedy function approximation: A gradient boosting machine.”, Ann.Statist. (10, 2001) 1189, doi:10.1214/aos/1013203451 .[62] CMS Collaboration, “Search for high-mass resonances in final states with a lepton andmissing transverse momentum at √ s =
13 TeV”,
JHEP (2018) 128, doi:10.1007/JHEP06(2018)128 , arXiv:1803.11133 .[63] J. Butterworth et al., “PDF4LHC recommendations for LHC Run II”, J. Phys. G (2016)023001, doi:10.1088/0954-3899/43/2/023001 , arXiv:1510.03865 .[64] CMS Collaboration, “CMS luminosity measurements for the 2016 data taking period”,(2017). CMS-PAS-LUM-17-001.[65] CMS Collaboration, “Measurement of the inelastic proton-proton cross section at √ s = JHEP (2018) 161, doi:10.1007/JHEP07(2018)161 , arXiv:1802.02613 .[66] The ATLAS Collaboration, The CMS Collaboration, The LHC Higgs Combination Group,“Procedure for the LHC Higgs boson search combination in Summer 2011”, TechnicalReport CMS-NOTE-2011-005, ATL-PHYS-PUB-2011-11, 2011.[67] R. Barlow and C. Beeston, “Fitting using finite Monte Carlo samples”, Comput. Phys.Commun. (1993) 219, doi:10.1016/0010-4655(93)90005-W .[68] J. S. Conway, “Incorporating nuisance parameters in likelihoods for multisource spectra”,in Proceedings, PHYSTAT 2011 workshop on statistical issues related to discovery claims insearch experiments and unfolding, CERN, Geneva, Switzerland 17–20 January 2011 , p. 115.2011. arXiv:1103.0354 . doi:10.5170/CERN-2011-006.115 .[69] T. Junk, “Confidence level computation for combining searches with small statistics”, Nucl. Instrum. Meth. A (1999) 435, doi:10.1016/S0168-9002(99)00498-2 , arXiv:hep-ex/9902006 . eferences [70] A. L. Read, “Presentation of search results: the CL s technique”, J. Phys. G (2002) 2693, doi:10.1088/0954-3899/28/10/313 .[71] G. Cowan, K. Cranmer, E. Gross, and O. Vitells, “Asymptotic formulae forlikelihood-based tests of new physics”, Eur. Phys. J. C (2011) 1554, doi:10.1140/epjc/s10052-011-1554-0 , arXiv:1007.1727 . [Erratum: doi:10.1140/epjc/s10052-013-2501-z ]. A The CMS Collaboration
Yerevan Physics Institute, Yerevan, Armenia
A.M. Sirunyan † , A. Tumasyan Institut f ¨ur Hochenergiephysik, Wien, Austria
W. Adam, F. Ambrogi, T. Bergauer, M. Dragicevic, J. Er ¨o, A. Escalante Del Valle, R. Fr ¨uhwirth ,M. Jeitler , N. Krammer, L. Lechner, D. Liko, T. Madlener, I. Mikulec, N. Rad, J. Schieck ,R. Sch ¨ofbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz , M. Zarucki Institute for Nuclear Problems, Minsk, Belarus
V. Chekhovsky, A. Litomin, V. Makarenko, J. Suarez Gonzalez
Universiteit Antwerpen, Antwerpen, Belgium
M.R. Darwish , E.A. De Wolf, D. Di Croce, X. Janssen, T. Kello , A. Lelek, M. Pieters,H. Rejeb Sfar, H. Van Haevermaet, P. Van Mechelen, S. Van Putte, N. Van Remortel Vrije Universiteit Brussel, Brussel, Belgium
F. Blekman, E.S. Bols, S.S. Chhibra, J. D’Hondt, J. De Clercq, D. Lontkovskyi, S. Lowette,I. Marchesini, S. Moortgat, Q. Python, S. Tavernier, W. Van Doninck, P. Van Mulders
Universit´e Libre de Bruxelles, Bruxelles, Belgium
D. Beghin, B. Bilin, B. Clerbaux, G. De Lentdecker, H. Delannoy, B. Dorney, L. Favart,A. Grebenyuk, A.K. Kalsi, I. Makarenko, L. Moureaux, L. P´etr´e, A. Popov, N. Postiau,E. Starling, L. Thomas, C. Vander Velde, P. Vanlaer, D. Vannerom, L. Wezenbeek
Ghent University, Ghent, Belgium
T. Cornelis, D. Dobur, I. Khvastunov , M. Niedziela, C. Roskas, K. Skovpen, M. Tytgat,W. Verbeke, B. Vermassen, M. Vit Universit´e Catholique de Louvain, Louvain-la-Neuve, Belgium
G. Bruno, F. Bury, C. Caputo, P. David, C. Delaere, M. Delcourt, I.S. Donertas, A. Giammanco,V. Lemaitre, J. Prisciandaro, A. Saggio, A. Taliercio, M. Teklishyn, P. Vischia, S. Wuyckens,J. Zobec
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
G.A. Alves, G. Correia Silva, C. Hensel, A. Moraes
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
W.L. Ald´a J ´unior, E. Belchior Batista Das Chagas, W. Carvalho, J. Chinellato , E. Coelho,E.M. Da Costa, G.G. Da Silveira , D. De Jesus Damiao, S. Fonseca De Souza, H. Malbouisson,J. Martins , D. Matos Figueiredo, M. Medina Jaime , M. Melo De Almeida, C. Mora Herrera,L. Mundim, H. Nogima, P. Rebello Teles, L.J. Sanchez Rosas, A. Santoro, S.M. Silva Do Amaral,A. Sznajder, M. Thiel, E.J. Tonelli Manganote , F. Torres Da Silva De Araujo, A. Vilela Pereira Universidade Estadual Paulista a , Universidade Federal do ABC b , S˜ao Paulo, Brazil C.A. Bernardes a , L. Calligaris a , T.R. Fernandez Perez Tomei a , E.M. Gregores b , D.S. Lemos a ,P.G. Mercadante b , S.F. Novaes a , Sandra S. Padula a Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia,Bulgaria
A. Aleksandrov, G. Antchev, I. Atanasov, R. Hadjiiska, P. Iaydjiev, M. Misheva, M. Rodozov,M. Shopova, G. Sultanov
University of Sofia, Sofia, Bulgaria
M. Bonchev, A. Dimitrov, T. Ivanov, L. Litov, B. Pavlov, P. Petkov, A. Petrov Beihang University, Beijing, China
W. Fang , Q. Guo, H. Wang, L. Yuan Department of Physics, Tsinghua University, Beijing, China
M. Ahmad, Z. Hu, Y. Wang
Institute of High Energy Physics, Beijing, China
E. Chapon, G.M. Chen , H.S. Chen , M. Chen, C.H. Jiang, D. Leggat, H. Liao, Z. Liu, R. Sharma,A. Spiezia, J. Tao, J. Wang, H. Zhang, S. Zhang , J. Zhao State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
A. Agapitos, Y. Ban, C. Chen, G. Chen, A. Levin, J. Li, L. Li, Q. Li, X. Lyu, Y. Mao, S.J. Qian,D. Wang, Q. Wang, J. Xiao
Sun Yat-Sen University, Guangzhou, China
Z. You
Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beamApplication (MOE) - Fudan University, Shanghai, China
X. Gao Zhejiang University, Hangzhou, China
M. Xiao
Universidad de Los Andes, Bogota, Colombia
C. Avila, A. Cabrera, C. Florez, J. Fraga, M.A. Segura Delgado
Universidad de Antioquia, Medellin, Colombia
J. Mejia Guisao, F. Ramirez, J.D. Ruiz Alvarez, C.A. Salazar Gonz´alez, N. Vanegas Arbelaez
University of Split, Faculty of Electrical Engineering, Mechanical Engineering and NavalArchitecture, Split, Croatia
D. Giljanovic, N. Godinovic, D. Lelas, I. Puljak, T. Sculac
University of Split, Faculty of Science, Split, Croatia
Z. Antunovic, M. Kovac
Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, D. Ferencek, D. Majumder, B. Mesic, M. Roguljic, A. Starodumov , T. Susa University of Cyprus, Nicosia, Cyprus
M.W. Ather, A. Attikis, E. Erodotou, A. Ioannou, G. Kole, M. Kolosova, S. Konstantinou,G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis, H. Rykaczewski, H. Saka,D. Tsiakkouri
Charles University, Prague, Czech Republic
M. Finger , M. Finger Jr. , A. Kveton, J. Tomsa Escuela Politecnica Nacional, Quito, Ecuador
E. Ayala
Universidad San Francisco de Quito, Quito, Ecuador
E. Carrera Jarrin
Academy of Scientific Research and Technology of the Arab Republic of Egypt, EgyptianNetwork of High Energy Physics, Cairo, Egypt
E. Salama Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
M.A. Mahmoud, Y. Mohammed National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
S. Bhowmik, A. Carvalho Antunes De Oliveira, R.K. Dewanjee, K. Ehataht, M. Kadastik,M. Raidal, C. Veelken
Department of Physics, University of Helsinki, Helsinki, Finland
P. Eerola, L. Forthomme, H. Kirschenmann, K. Osterberg, M. Voutilainen
Helsinki Institute of Physics, Helsinki, Finland
E. Br ¨ucken, F. Garcia, J. Havukainen, V. Karim¨aki, M.S. Kim, R. Kinnunen, T. Lamp´en,K. Lassila-Perini, S. Laurila, S. Lehti, T. Lind´en, H. Siikonen, E. Tuominen, J. Tuominiemi
Lappeenranta University of Technology, Lappeenranta, Finland
P. Luukka, T. Tuuva
IRFU, CEA, Universit´e Paris-Saclay, Gif-sur-Yvette, France
M. Besancon, F. Couderc, M. Dejardin, D. Denegri, J.L. Faure, F. Ferri, S. Ganjour, A. Givernaud,P. Gras, G. Hamel de Monchenault, P. Jarry, C. Leloup, B. Lenzi, E. Locci, J. Malcles, J. Rander,A. Rosowsky, M. ¨O. Sahin, A. Savoy-Navarro , M. Titov, G.B. Yu Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechniquede Paris, Paris, France
S. Ahuja, C. Amendola, F. Beaudette, M. Bonanomi, P. Busson, C. Charlot, O. Davignon, B. Diab,G. Falmagne, R. Granier de Cassagnac, I. Kucher, A. Lobanov, C. Martin Perez, M. Nguyen,C. Ochando, P. Paganini, J. Rembser, R. Salerno, J.B. Sauvan, Y. Sirois, A. Zabi, A. Zghiche
Universit´e de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
J.-L. Agram , J. Andrea, D. Bloch, G. Bourgatte, J.-M. Brom, E.C. Chabert, C. Collard, J.-C. Fontaine , D. Gel´e, U. Goerlach, C. Grimault, A.-C. Le Bihan, P. Van Hove Universit´e de Lyon, Universit´e Claude Bernard Lyon 1, CNRS-IN2P3, Institut de PhysiqueNucl´eaire de Lyon, Villeurbanne, France
E. Asilar, S. Beauceron, C. Bernet, G. Boudoul, C. Camen, A. Carle, N. Chanon, R. Chierici,D. Contardo, P. Depasse, H. El Mamouni, J. Fay, S. Gascon, M. Gouzevitch, B. Ille, Sa. Jain,I.B. Laktineh, H. Lattaud, A. Lesauvage, M. Lethuillier, L. Mirabito, L. Torterotot, G. Touquet,M. Vander Donckt, S. Viret
Georgian Technical University, Tbilisi, Georgia
A. Khvedelidze Tbilisi State University, Tbilisi, Georgia
Z. Tsamalaidze RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
L. Feld, K. Klein, M. Lipinski, D. Meuser, A. Pauls, M. Preuten, M.P. Rauch, J. Schulz,M. Teroerde
RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
D. Eliseev, M. Erdmann, P. Fackeldey, B. Fischer, S. Ghosh, T. Hebbeker, K. Hoepfner, H. Keller,L. Mastrolorenzo, M. Merschmeyer, A. Meyer, P. Millet, G. Mocellin, S. Mondal, S. Mukherjee,D. Noll, A. Novak, T. Pook, A. Pozdnyakov, T. Quast, M. Radziej, Y. Rath, H. Reithler, J. Roemer,A. Schmidt, S.C. Schuler, A. Sharma, S. Wiedenbeck, S. Zaleski RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
C. Dziwok, G. Fl ¨ugge, W. Haj Ahmad , O. Hlushchenko, T. Kress, A. Nowack, C. Pistone,O. Pooth, D. Roy, H. Sert, A. Stahl , T. Ziemons Deutsches Elektronen-Synchrotron, Hamburg, Germany
H. Aarup Petersen, M. Aldaya Martin, P. Asmuss, I. Babounikau, S. Baxter, O. Behnke,A. Berm ´udez Mart´ınez, A.A. Bin Anuar, K. Borras , V. Botta, D. Brunner, A. Campbell,A. Cardini, P. Connor, S. Consuegra Rodr´ıguez, V. Danilov, A. De Wit, M.M. Defranchis,L. Didukh, D. Dom´ınguez Damiani, G. Eckerlin, D. Eckstein, T. Eichhorn, A. Elwood,L.I. Estevez Banos, E. Gallo , A. Geiser, A. Giraldi, A. Grohsjean, M. Guthoff, M. Haranko,A. Harb, A. Jafari , N.Z. Jomhari, H. Jung, A. Kasem , M. Kasemann, H. Kaveh, J. Keaveney,C. Kleinwort, J. Knolle, D. Kr ¨ucker, W. Lange, T. Lenz, J. Lidrych, K. Lipka, W. Lohmann ,R. Mankel, I.-A. Melzer-Pellmann, J. Metwally, A.B. Meyer, M. Meyer, M. Missiroli, J. Mnich,A. Mussgiller, V. Myronenko, Y. Otarid, D. P´erez Ad´an, S.K. Pflitsch, D. Pitzl, A. Raspereza,A. Saibel, M. Savitskyi, V. Scheurer, P. Sch ¨utze, C. Schwanenberger, R. Shevchenko, A. Singh,R.E. Sosa Ricardo, H. Tholen, N. Tonon, O. Turkot, A. Vagnerini, M. Van De Klundert, R. Walsh,D. Walter, Y. Wen, K. Wichmann, C. Wissing, S. Wuchterl, O. Zenaiev, R. Zlebcik University of Hamburg, Hamburg, Germany
R. Aggleton, S. Bein, L. Benato, A. Benecke, K. De Leo, T. Dreyer, A. Ebrahimi, F. Feindt,A. Fr ¨ohlich, C. Garbers, E. Garutti, D. Gonzalez, P. Gunnellini, J. Haller, A. Hinzmann,A. Karavdina, G. Kasieczka, R. Klanner, R. Kogler, S. Kurz, V. Kutzner, J. Lange, T. Lange,A. Malara, J. Multhaup, C.E.N. Niemeyer, A. Nigamova, K.J. Pena Rodriguez, A. Reimers,O. Rieger, P. Schleper, S. Schumann, J. Schwandt, D. Schwarz, J. Sonneveld, H. Stadie,G. Steinbr ¨uck, B. Vormwald, I. Zoi
Karlsruher Institut fuer Technologie, Karlsruhe, Germany
M. Akbiyik, M. Baselga, S. Baur, J. Bechtel, T. Berger, E. Butz, R. Caspart, T. Chwalek,W. De Boer, A. Dierlamm, A. Droll, K. El Morabit, N. Faltermann, K. Fl ¨oh, M. Giffels,A. Gottmann, F. Hartmann , C. Heidecker, U. Husemann, M.A. Iqbal, I. Katkov , P. Keicher,R. Koppenh ¨ofer, S. Kudella, S. Maier, M. Metzler, S. Mitra, M.U. Mozer, D. M ¨uller, Th. M ¨uller,M. Musich, G. Quast, K. Rabbertz, J. Rauser, D. Savoiu, D. Sch¨afer, M. Schnepf, M. Schr ¨oder,D. Seith, I. Shvetsov, H.J. Simonis, R. Ulrich, M. Wassmer, M. Weber, C. W ¨ohrmann, R. Wolf,S. Wozniewski Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi,Greece
G. Anagnostou, P. Asenov, G. Daskalakis, T. Geralis, A. Kyriakis, D. Loukas, G. Paspalaki,A. Stakia
National and Kapodistrian University of Athens, Athens, Greece
M. Diamantopoulou, D. Karasavvas, G. Karathanasis, P. Kontaxakis, C.K. Koraka,A. Manousakis-katsikakis, A. Panagiotou, I. Papavergou, N. Saoulidou, K. Theofilatos,K. Vellidis, E. Vourliotis
National Technical University of Athens, Athens, Greece
G. Bakas, K. Kousouris, I. Papakrivopoulos, G. Tsipolitis, A. Zacharopoulou
University of Io´annina, Io´annina, Greece
I. Evangelou, C. Foudas, P. Gianneios, P. Katsoulis, P. Kokkas, S. Mallios, K. Manitara,N. Manthos, I. Papadopoulos, J. Strologas, D. Tsitsonis MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´and University,Budapest, Hungary
M. Bart ´ok , R. Chudasama, M. Csanad, M.M.A. Gadallah , P. Major, K. Mandal, A. Mehta,G. Pasztor, O. Sur´anyi, G.I. Veres Wigner Research Centre for Physics, Budapest, Hungary
G. Bencze, C. Hajdu, D. Horvath , F. Sikler, V. Veszpremi, G. Vesztergombi † Institute of Nuclear Research ATOMKI, Debrecen, Hungary
N. Beni, S. Czellar, J. Karancsi , J. Molnar, Z. Szillasi, D. Teyssier Institute of Physics, University of Debrecen, Debrecen, Hungary
P. Raics, Z.L. Trocsanyi, B. Ujvari
Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary
T. Csorgo, S. L ¨ok ¨os , F. Nemes, T. Novak Indian Institute of Science (IISc), Bangalore, India
S. Choudhury, J.R. Komaragiri, D. Kumar, L. Panwar, P.C. Tiwari
National Institute of Science Education and Research, HBNI, Bhubaneswar, India
S. Bahinipati , D. Dash, C. Kar, P. Mal, T. Mishra, V.K. Muraleedharan Nair Bindhu,A. Nayak , D.K. Sahoo , N. Sur, S.K. Swain Panjab University, Chandigarh, India
S. Bansal, S.B. Beri, V. Bhatnagar, S. Chauhan, N. Dhingra , R. Gupta, A. Kaur, A. Kaur, S. Kaur,P. Kumari, M. Lohan, M. Meena, K. Sandeep, S. Sharma, J.B. Singh, A.K. Virdi University of Delhi, Delhi, India
A. Ahmed, A. Bhardwaj, B.C. Choudhary, R.B. Garg, M. Gola, S. Keshri, A. Kumar,M. Naimuddin, P. Priyanka, K. Ranjan, A. Shah
Saha Institute of Nuclear Physics, HBNI, Kolkata, India
M. Bharti , R. Bhattacharya, S. Bhattacharya, D. Bhowmik, S. Dutta, S. Ghosh, B. Gomber ,M. Maity , K. Mondal, S. Nandan, P. Palit, A. Purohit, P.K. Rout, G. Saha, S. Sarkar, M. Sharan,B. Singh , S. Thakur Indian Institute of Technology Madras, Madras, India
P.K. Behera, S.C. Behera, P. Kalbhor, A. Muhammad, R. Pradhan, P.R. Pujahari, A. Sharma,A.K. Sikdar
Bhabha Atomic Research Centre, Mumbai, India
D. Dutta, V. Jha, V. Kumar, D.K. Mishra, K. Naskar , P.K. Netrakanti, L.M. Pant, P. Shukla Tata Institute of Fundamental Research-A, Mumbai, India
T. Aziz, M.A. Bhat, S. Dugad, R. Kumar Verma, U. Sarkar
Tata Institute of Fundamental Research-B, Mumbai, India
S. Banerjee, S. Bhattacharya, S. Chatterjee, P. Das, M. Guchait, S. Karmakar, S. Kumar,G. Majumder, K. Mazumdar, S. Mukherjee, D. Roy, N. Sahoo
Indian Institute of Science Education and Research (IISER), Pune, India
S. Dube, B. Kansal, A. Kapoor, K. Kothekar, S. Pandey, A. Rane, A. Rastogi, S. Sharma
Department of Physics, Isfahan University of Technology, Isfahan, Iran
H. Bakhshiansohi Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
S. Chenarani , S.M. Etesami, M. Khakzad, M. Mohammadi Najafabadi, M. Naseri University College Dublin, Dublin, Ireland
M. Felcini, M. Grunewald
INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy M. Abbrescia a , b , R. Aly a , b ,37 , C. Aruta a , b , C. Calabria a , b , A. Colaleo a , D. Creanza a , c ,N. De Filippis a , c , M. De Palma a , b , A. Di Florio a , b , A. Di Pilato a , b , W. Elmetenawee a , b , L. Fiore a ,A. Gelmi a , b , G. Iaselli a , c , M. Ince a , b , S. Lezki a , b , G. Maggi a , c , M. Maggi a , I. Margjeka a , b ,J.A. Merlin a , S. My a , b , S. Nuzzo a , b , A. Pompili a , b , G. Pugliese a , c , A. Ranieri a , G. Selvaggi a , b ,L. Silvestris a , F.M. Simone a , b , R. Venditti a , P. Verwilligen a INFN Sezione di Bologna a , Universit`a di Bologna b , Bologna, Italy G. Abbiendi a , C. Battilana a , b , D. Bonacorsi a , b , L. Borgonovi a , b , S. Braibant-Giacomelli a , b ,R. Campanini a , b , P. Capiluppi a , b , A. Castro a , b , F.R. Cavallo a , C. Ciocca a , M. Cuffiani a , b ,G.M. Dallavalle a , T. Diotalevi a , b , F. Fabbri a , A. Fanfani a , b , E. Fontanesi a , b , P. Giacomelli a ,C. Grandi a , L. Guiducci a , b , F. Iemmi a , b , S. Lo Meo a ,38 , S. Marcellini a , G. Masetti a ,F.L. Navarria a , b , A. Perrotta a , F. Primavera a , b , A.M. Rossi a , b , T. Rovelli a , b , G.P. Siroli a , b , N. Tosi a INFN Sezione di Catania a , Universit`a di Catania b , Catania, Italy S. Albergo a , b ,39 , S. Costa a , b , A. Di Mattia a , R. Potenza a , b , A. Tricomi a , b ,39 , C. Tuve a , b INFN Sezione di Firenze a , Universit`a di Firenze b , Firenze, Italy G. Barbagli a , A. Cassese a , R. Ceccarelli a , b , V. Ciulli a , b , C. Civinini a , R. D’Alessandro a , b , F. Fiori a ,E. Focardi a , b , G. Latino a , b , P. Lenzi a , b , M. Lizzo a , b , M. Meschini a , S. Paoletti a , R. Seidita a , b ,G. Sguazzoni a , L. Viliani a INFN Laboratori Nazionali di Frascati, Frascati, Italy
L. Benussi, S. Bianco, D. Piccolo
INFN Sezione di Genova a , Universit`a di Genova b , Genova, Italy M. Bozzo a , b , F. Ferro a , R. Mulargia a , b , E. Robutti a , S. Tosi a , b INFN Sezione di Milano-Bicocca a , Universit`a di Milano-Bicocca b , Milano, Italy A. Benaglia a , A. Beschi a , b , F. Brivio a , b , F. Cetorelli a , b , V. Ciriolo a , b ,18 , F. De Guio a , b ,M.E. Dinardo a , b , P. Dini a , S. Gennai a , A. Ghezzi a , b , P. Govoni a , b , L. Guzzi a , b , M. Malberti a ,S. Malvezzi a , D. Menasce a , F. Monti a , b , L. Moroni a , M. Paganoni a , b , D. Pedrini a , S. Ragazzi a , b ,T. Tabarelli de Fatis a , b , D. Valsecchi a , b ,18 , D. Zuolo a , b INFN Sezione di Napoli a , Universit`a di Napoli ’Federico II’ b , Napoli, Italy, Universit`a dellaBasilicata c , Potenza, Italy, Universit`a G. Marconi d , Roma, Italy S. Buontempo a , N. Cavallo a , c , A. De Iorio a , b , F. Fabozzi a , c , F. Fienga a , A.O.M. Iorio a , b ,L. Layer a , b , L. Lista a , b , S. Meola a , d ,18 , P. Paolucci a ,18 , B. Rossi a , C. Sciacca a , b , E. Voevodina a , b INFN Sezione di Padova a , Universit`a di Padova b , Padova, Italy, Universit`a di Trento c ,Trento, Italy P. Azzi a , N. Bacchetta a , D. Bisello a , b , A. Boletti a , b , A. Bragagnolo a , b , R. Carlin a , b , P. Checchia a ,P. De Castro Manzano a , T. Dorigo a , U. Dosselli a , F. Gasparini a , b , U. Gasparini a , b , S.Y. Hoh a , b ,M. Margoni a , b , A.T. Meneguzzo a , b , M. Presilla b , P. Ronchese a , b , R. Rossin a , b , F. Simonetto a , b ,G. Strong, A. Tiko a , M. Tosi a , b , H. YARAR a , b , M. Zanetti a , b , P. Zotto a , b , A. Zucchetta a , b INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy A. Braghieri a , S. Calzaferri a , b , D. Fiorina a , b , P. Montagna a , b , S.P. Ratti a , b , V. Re a , M. Ressegotti a , b ,C. Riccardi a , b , P. Salvini a , I. Vai a , P. Vitulo a , b INFN Sezione di Perugia a , Universit`a di Perugia b , Perugia, Italy M. Biasini a , b , G.M. Bilei a , D. Ciangottini a , b , L. Fan `o a , b , P. Lariccia a , b , G. Mantovani a , b ,V. Mariani a , b , M. Menichelli a , F. Moscatelli a , A. Rossi a , b , A. Santocchia a , b , D. Spiga a ,T. Tedeschi a , b INFN Sezione di Pisa a , Universit`a di Pisa b , Scuola Normale Superiore di Pisa c , Pisa, Italy K. Androsov a , P. Azzurri a , G. Bagliesi a , V. Bertacchi a , c , L. Bianchini a , T. Boccali a , R. Castaldi a ,M.A. Ciocci a , b , R. Dell’Orso a , M.R. Di Domenico a , b , S. Donato a , L. Giannini a , c , A. Giassi a ,M.T. Grippo a , F. Ligabue a , c , E. Manca a , c , G. Mandorli a , c , A. Messineo a , b , F. Palla a , A. Rizzi a , b ,G. Rolandi a , c , S. Roy Chowdhury a , c , A. Scribano a , N. Shafiei a , b , P. Spagnolo a , R. Tenchini a ,G. Tonelli a , b , N. Turini a , A. Venturi a , P.G. Verdini a INFN Sezione di Roma a , Sapienza Universit`a di Roma b , Rome, Italy F. Cavallari a , M. Cipriani a , b , D. Del Re a , b , E. Di Marco a , M. Diemoz a , E. Longo a , b , P. Meridiani a ,G. Organtini a , b , F. Pandolfi a , R. Paramatti a , b , C. Quaranta a , b , S. Rahatlou a , b , C. Rovelli a ,F. Santanastasio a , b , L. Soffi a , b , R. Tramontano a , b INFN Sezione di Torino a , Universit`a di Torino b , Torino, Italy, Universit`a del PiemonteOrientale c , Novara, Italy N. Amapane a , b , R. Arcidiacono a , c , S. Argiro a , b , M. Arneodo a , c , N. Bartosik a , R. Bellan a , b ,A. Bellora a , b , C. Biino a , A. Cappati a , b , N. Cartiglia a , S. Cometti a , M. Costa a , b , R. Covarelli a , b ,N. Demaria a , B. Kiani a , b , F. Legger a , C. Mariotti a , S. Maselli a , E. Migliore a , b , V. Monaco a , b ,E. Monteil a , b , M. Monteno a , M.M. Obertino a , b , G. Ortona a , L. Pacher a , b , N. Pastrone a ,M. Pelliccioni a , G.L. Pinna Angioni a , b , M. Ruspa a , c , R. Salvatico a , b , F. Siviero a , b , V. Sola a ,A. Solano a , b , D. Soldi a , b , A. Staiano a , D. Trocino a , b INFN Sezione di Trieste a , Universit`a di Trieste b , Trieste, Italy S. Belforte a , V. Candelise a , b , M. Casarsa a , F. Cossutti a , A. Da Rold a , b , G. Della Ricca a , b ,F. Vazzoler a , b Kyungpook National University, Daegu, Korea
S. Dogra, C. Huh, B. Kim, D.H. Kim, G.N. Kim, J. Lee, S.W. Lee, C.S. Moon, Y.D. Oh, S.I. Pak,S. Sekmen, Y.C. Yang
Chonnam National University, Institute for Universe and Elementary Particles, Kwangju,Korea
H. Kim, D.H. Moon
Hanyang University, Seoul, Korea
B. Francois, T.J. Kim, J. Park
Korea University, Seoul, Korea
S. Cho, S. Choi, Y. Go, S. Ha, B. Hong, K. Lee, K.S. Lee, J. Lim, J. Park, S.K. Park, Y. Roh, J. Yoo
Kyung Hee University, Department of Physics, Seoul, Republic of Korea
J. Goh, A. Gurtu
Sejong University, Seoul, Korea
H.S. Kim, Y. Kim
Seoul National University, Seoul, Korea
J. Almond, J.H. Bhyun, J. Choi, S. Jeon, J. Kim, J.S. Kim, S. Ko, H. Kwon, H. Lee, K. Lee, S. Lee,K. Nam, B.H. Oh, M. Oh, S.B. Oh, B.C. Radburn-Smith, H. Seo, U.K. Yang, I. Yoon0
J. Almond, J.H. Bhyun, J. Choi, S. Jeon, J. Kim, J.S. Kim, S. Ko, H. Kwon, H. Lee, K. Lee, S. Lee,K. Nam, B.H. Oh, M. Oh, S.B. Oh, B.C. Radburn-Smith, H. Seo, U.K. Yang, I. Yoon0 University of Seoul, Seoul, Korea
D. Jeon, J.H. Kim, B. Ko, J.S.H. Lee, I.C. Park, I.J. Watson
Yonsei University, Department of Physics, Seoul, Korea
H.D. Yoo
Sungkyunkwan University, Suwon, Korea
Y. Choi, C. Hwang, Y. Jeong, H. Lee, J. Lee, Y. Lee, I. Yu
Riga Technical University, Riga, Latvia
V. Veckalns Vilnius University, Vilnius, Lithuania
A. Juodagalvis, A. Rinkevicius, G. Tamulaitis
National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
W.A.T. Wan Abdullah, M.N. Yusli, Z. Zolkapli
Universidad de Sonora (UNISON), Hermosillo, Mexico
J.F. Benitez, A. Castaneda Hernandez, J.A. Murillo Quijada, L. Valencia Palomo
Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-De La Cruz , R. Lopez-Fernandez,A. Sanchez-Hernandez Universidad Iberoamericana, Mexico City, Mexico
S. Carrillo Moreno, C. Oropeza Barrera, M. Ramirez-Garcia, F. Vazquez Valencia
Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
J. Eysermans, I. Pedraza, H.A. Salazar Ibarguen, C. Uribe Estrada
Universidad Aut ´onoma de San Luis Potos´ı, San Luis Potos´ı, Mexico
A. Morelos Pineda
University of Montenegro, Podgorica, Montenegro
J. Mijuskovic , N. Raicevic University of Auckland, Auckland, New Zealand
D. Krofcheck
University of Canterbury, Christchurch, New Zealand
S. Bheesette, P.H. Butler
National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
A. Ahmad, M.I. Asghar, M.I.M. Awan, Q. Hassan, H.R. Hoorani, W.A. Khan, M.A. Shah,M. Shoaib, M. Waqas
AGH University of Science and Technology Faculty of Computer Science, Electronics andTelecommunications, Krakow, Poland
V. Avati, L. Grzanka, M. Malawski
National Centre for Nuclear Research, Swierk, Poland
H. Bialkowska, M. Bluj, B. Boimska, T. Frueboes, M. G ´orski, M. Kazana, M. Szleper, P. Traczyk,P. Zalewski
Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
K. Bunkowski, A. Byszuk , K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski,M. Olszewski, M. Walczak Laborat ´orio de Instrumenta¸c˜ao e F´ısica Experimental de Part´ıculas, Lisboa, Portugal
M. Araujo, P. Bargassa, D. Bastos, A. Di Francesco, P. Faccioli, B. Galinhas, M. Gallinaro,J. Hollar, N. Leonardo, T. Niknejad, J. Seixas, K. Shchelina, O. Toldaiev, J. Varela
Joint Institute for Nuclear Research, Dubna, Russia
V. Alexakhin, A. Golunov, A. Golunov, I. Golutvin, N. Gorbounov, I. Gorbunov, V. Karjavine,A. Lanev, A. Malakhov, V. Matveev , V.V. Mitsyn, P. Moisenz, V. Palichik, V. Perelygin,D. Seitova, V. Shalaev, S. Shmatov, O. Teryaev, V. Trofimov, N. Voytishin, B.S. Yuldashev ,A. Zarubin, I. Zhizhin Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
G. Gavrilov, V. Golovtcov, Y. Ivanov, V. Kim , E. Kuznetsova , V. Murzin, V. Oreshkin,I. Smirnov, D. Sosnov, V. Sulimov, L. Uvarov, S. Volkov, A. Vorobyev Institute for Nuclear Research, Moscow, Russia
Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, A. Karneyeu, M. Kirsanov, N. Krasnikov,A. Pashenkov, G. Pivovarov, D. Tlisov, A. Toropin
Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC‘Kurchatov Institute’, Moscow, Russia
V. Epshteyn, V. Gavrilov, N. Lychkovskaya, A. Nikitenko , V. Popov, I. Pozdnyakov,G. Safronov, A. Spiridonov, A. Stepennov, M. Toms, E. Vlasov, A. Zhokin Moscow Institute of Physics and Technology, Moscow, Russia
T. Aushev
National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI),Moscow, Russia
O. Bychkova, M. Chadeeva , D. Philippov, E. Popova, V. Rusinov P.N. Lebedev Physical Institute, Moscow, Russia
V. Andreev, M. Azarkin, I. Dremin, M. Kirakosyan, A. Terkulov
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow,Russia
A. Belyaev, E. Boos, M. Dubinin , L. Dudko, A. Ershov, A. Gribushin, V. Klyukhin,O. Kodolova, I. Lokhtin, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev Novosibirsk State University (NSU), Novosibirsk, Russia
V. Blinov , T. Dimova , L. Kardapoltsev , I. Ovtin , Y. Skovpen Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’,Protvino, Russia
I. Azhgirey, I. Bayshev, V. Kachanov, A. Kalinin, D. Konstantinov, V. Petrov, R. Ryutin, A. Sobol,S. Troshin, N. Tyurin, A. Uzunian, A. Volkov
National Research Tomsk Polytechnic University, Tomsk, Russia
A. Babaev, A. Iuzhakov, V. Okhotnikov
Tomsk State University, Tomsk, Russia
V. Borchsh, V. Ivanchenko, E. Tcherniaev
University of Belgrade: Faculty of Physics and VINCA Institute of Nuclear Sciences,Belgrade, Serbia
P. Adzic , P. Cirkovic, M. Dordevic, P. Milenovic, J. Milosevic, M. Stojanovic Centro de Investigaciones Energ´eticas Medioambientales y Tecnol ´ogicas (CIEMAT),Madrid, Spain
M. Aguilar-Benitez, J. Alcaraz Maestre, A. ´Alvarez Fern´andez, I. Bachiller, M. Barrio Luna,Cristina F. Bedoya, J.A. Brochero Cifuentes, C.A. Carrillo Montoya, M. Cepeda, M. Cerrada,N. Colino, B. De La Cruz, A. Delgado Peris, J.P. Fern´andez Ramos, J. Flix, M.C. Fouz,O. Gonzalez Lopez, S. Goy Lopez, J.M. Hernandez, M.I. Josa, D. Moran, ´A. Navarro Tobar,A. P´erez-Calero Yzquierdo, J. Puerta Pelayo, I. Redondo, L. Romero, S. S´anchez Navas,M.S. Soares, A. Triossi, C. Willmott
Universidad Aut ´onoma de Madrid, Madrid, Spain
C. Albajar, J.F. de Troc ´oniz, R. Reyes-Almanza
Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnolog´ıas Espaciales deAsturias (ICTEA), Oviedo, Spain
B. Alvarez Gonzalez, J. Cuevas, C. Erice, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Ca-ballero, E. Palencia Cortezon, C. Ram ´on ´Alvarez, V. Rodr´ıguez Bouza, S. Sanchez Cruz
Instituto de F´ısica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
I.J. Cabrillo, A. Calderon, B. Chazin Quero, J. Duarte Campderros, M. Fernandez,P.J. Fern´andez Manteca, A. Garc´ıa Alonso, G. Gomez, C. Martinez Rivero, P. Mar-tinez Ruiz del Arbol, F. Matorras, J. Piedra Gomez, C. Prieels, F. Ricci-Tam, T. Rodrigo, A. Ruiz-Jimeno, L. Russo , L. Scodellaro, I. Vila, J.M. Vizan Garcia University of Colombo, Colombo, Sri Lanka
MK Jayananda, B. Kailasapathy , D.U.J. Sonnadara, DDC Wickramarathna University of Ruhuna, Department of Physics, Matara, Sri Lanka
W.G.D. Dharmaratna, K. Liyanage, N. Perera, N. Wickramage
CERN, European Organization for Nuclear Research, Geneva, Switzerland
T.K. Aarrestad, D. Abbaneo, B. Akgun, E. Auffray, G. Auzinger, J. Baechler, P. Baillon, A.H. Ball,D. Barney, J. Bendavid, M. Bianco, A. Bocci, P. Bortignon, E. Bossini, E. Brondolin, T. Camporesi,G. Cerminara, L. Cristella, D. d’Enterria, A. Dabrowski, N. Daci, V. Daponte, A. David,A. De Roeck, M. Deile, R. Di Maria, M. Dobson, M. D ¨unser, N. Dupont, A. Elliott-Peisert,N. Emriskova, F. Fallavollita , D. Fasanella, S. Fiorendi, G. Franzoni, J. Fulcher, W. Funk,S. Giani, D. Gigi, K. Gill, F. Glege, L. Gouskos, M. Gruchala, M. Guilbaud, D. Gulhan,J. Hegeman, Y. Iiyama, V. Innocente, T. James, P. Janot, J. Kaspar, J. Kieseler, M. Komm,N. Kratochwil, C. Lange, P. Lecoq, K. Long, C. Lourenc¸o, L. Malgeri, M. Mannelli, A. Massironi,F. Meijers, S. Mersi, E. Meschi, F. Moortgat, M. Mulders, J. Ngadiuba, J. Niedziela, S. Orfanelli,L. Orsini, F. Pantaleo , L. Pape, E. Perez, M. Peruzzi, A. Petrilli, G. Petrucciani, A. Pfeiffer,M. Pierini, F.M. Pitters, D. Rabady, A. Racz, M. Rieger, M. Rovere, H. Sakulin, J. Salfeld-Nebgen,S. Scarfi, C. Sch¨afer, C. Schwick, M. Selvaggi, A. Sharma, P. Silva, W. Snoeys, P. Sphicas ,J. Steggemann, S. Summers, V.R. Tavolaro, D. Treille, A. Tsirou, G.P. Van Onsem, A. Vartak,M. Verzetti, K.A. Wozniak, W.D. Zeuner Paul Scherrer Institut, Villigen, Switzerland
L. Caminada , W. Erdmann, R. Horisberger, Q. Ingram, H.C. Kaestli, D. Kotlinski,U. Langenegger, T. Rohe ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
M. Backhaus, P. Berger, A. Calandri, N. Chernyavskaya, G. Dissertori, M. Dittmar, M. Doneg`a,C. Dorfer, T. Gadek, T.A. G ´omez Espinosa, C. Grab, D. Hits, W. Lustermann, A.-M. Lyon,R.A. Manzoni, M.T. Meinhard, F. Micheli, P. Musella, F. Nessi-Tedaldi, F. Pauss, V. Perovic, G. Perrin, L. Perrozzi, S. Pigazzini, M.G. Ratti, M. Reichmann, C. Reissel, T. Reitenspiess,B. Ristic, D. Ruini, D.A. Sanz Becerra, M. Sch ¨onenberger, L. Shchutska, V. Stampf,M.L. Vesterbacka Olsson, R. Wallny, D.H. Zhu
Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , C. Botta, D. Brzhechko, M.F. Canelli, A. De Cosa, R. Del Burgo, J.K. Heikkil¨a,M. Huwiler, A. Jofrehei, B. Kilminster, S. Leontsinis, A. Macchiolo, P. Meiring, V.M. Mikuni,U. Molinatti, I. Neutelings, G. Rauco, P. Robmann, K. Schweiger, Y. Takahashi, S. Wertz National Central University, Chung-Li, Taiwan
C. Adloff , C.M. Kuo, W. Lin, A. Roy, T. Sarkar , S.S. Yu National Taiwan University (NTU), Taipei, Taiwan
L. Ceard, P. Chang, Y. Chao, K.F. Chen, P.H. Chen, W.-S. Hou, Y.y. Li, R.-S. Lu, E. Paganis,A. Psallidas, A. Steen, E. Yazgan
Chulalongkorn University, Faculty of Science, Department of Physics, Bangkok, Thailand
B. Asavapibhop, C. Asawatangtrakuldee, N. Srimanobhas
C¸ ukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
F. Boran, S. Damarseckin , Z.S. Demiroglu, F. Dolek, C. Dozen , I. Dumanoglu , E. Eskut,G. Gokbulut, Y. Guler, E. Gurpinar Guler , I. Hos , C. Isik, E.E. Kangal , O. Kara,A. Kayis Topaksu, U. Kiminsu, G. Onengut, K. Ozdemir , A. Polatoz, A.E. Simsek, B. Tali ,U.G. Tok, S. Turkcapar, I.S. Zorbakir, C. Zorbilmez Middle East Technical University, Physics Department, Ankara, Turkey
B. Isildak , G. Karapinar , K. Ocalan , M. Yalvac Bogazici University, Istanbul, Turkey
I.O. Atakisi, E. G ¨ulmez, M. Kaya , O. Kaya , ¨O. ¨Ozc¸elik, S. Tekten , E.A. Yetkin Istanbul Technical University, Istanbul, Turkey
A. Cakir, K. Cankocak , Y. Komurcu, S. Sen Istanbul University, Istanbul, Turkey
F. Aydogmus Sen, S. Cerci , B. Kaynak, S. Ozkorucuklu, D. Sunar Cerci Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkov,Ukraine
B. Grynyov
National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
L. Levchuk
University of Bristol, Bristol, United Kingdom
E. Bhal, S. Bologna, J.J. Brooke, D. Burns , E. Clement, D. Cussans, H. Flacher, J. Goldstein,G.P. Heath, H.F. Heath, L. Kreczko, B. Krikler, S. Paramesvaran, T. Sakuma, S. Seif El Nasr-Storey, V.J. Smith, J. Taylor, A. Titterton Rutherford Appleton Laboratory, Didcot, United Kingdom
K.W. Bell, A. Belyaev , C. Brew, R.M. Brown, D.J.A. Cockerill, K.V. Ellis, K. Harder,S. Harper, J. Linacre, K. Manolopoulos, D.M. Newbold, E. Olaiya, D. Petyt, T. Reis, T. Schuh,C.H. Shepherd-Themistocleous, A. Thea, I.R. Tomalin, T. Williams Imperial College, London, United Kingdom
R. Bainbridge, P. Bloch, S. Bonomally, J. Borg, S. Breeze, O. Buchmuller, A. Bundock, V. Cepaitis, G.S. Chahal , D. Colling, P. Dauncey, G. Davies, M. Della Negra, P. Everaerts, G. Fedi,G. Hall, G. Iles, J. Langford, L. Lyons, A.-M. Magnan, S. Malik, A. Martelli, V. Milosevic,A. Morton, J. Nash , V. Palladino, M. Pesaresi, D.M. Raymond, A. Richards, A. Rose, E. Scott,C. Seez, A. Shtipliyski, M. Stoye, A. Tapper, K. Uchida, T. Virdee , N. Wardle, S.N. Webb,D. Winterbottom, A.G. Zecchinelli, S.C. Zenz Brunel University, Uxbridge, United Kingdom
J.E. Cole, P.R. Hobson, A. Khan, P. Kyberd, C.K. Mackay, I.D. Reid, L. Teodorescu, S. Zahid
Baylor University, Waco, USA
A. Brinkerhoff, K. Call, B. Caraway, J. Dittmann, K. Hatakeyama, C. Madrid, B. McMaster,N. Pastika, C. Smith
Catholic University of America, Washington, DC, USA
R. Bartek, A. Dominguez, R. Uniyal, A.M. Vargas Hernandez
The University of Alabama, Tuscaloosa, USA
A. Buccilli, O. Charaf, S.I. Cooper, S.V. Gleyzer, C. Henderson, P. Rumerio, C. West
Boston University, Boston, USA
A. Akpinar, A. Albert, D. Arcaro, C. Cosby, Z. Demiragli, D. Gastler, C. Richardson, J. Rohlf,K. Salyer, D. Sperka, D. Spitzbart, I. Suarez, S. Yuan, D. Zou
Brown University, Providence, USA
G. Benelli, B. Burkle, X. Coubez , D. Cutts, Y.t. Duh, M. Hadley, U. Heintz, J.M. Hogan ,K.H.M. Kwok, E. Laird, G. Landsberg, K.T. Lau, J. Lee, M. Narain, S. Sagir , R. Syarif, E. Usai,W.Y. Wong, D. Yu, W. Zhang University of California, Davis, Davis, USA
R. Band, C. Brainerd, R. Breedon, M. Calderon De La Barca Sanchez, M. Chertok, J. Conway,R. Conway, P.T. Cox, R. Erbacher, C. Flores, G. Funk, F. Jensen, W. Ko † , O. Kukral, R. Lander,M. Mulhearn, D. Pellett, J. Pilot, M. Shi, D. Taylor, K. Tos, M. Tripathi, Y. Yao, F. Zhang University of California, Los Angeles, USA
M. Bachtis, C. Bravo, R. Cousins, A. Dasgupta, A. Florent, D. Hamilton, J. Hauser, M. Ignatenko,T. Lam, N. Mccoll, W.A. Nash, S. Regnard, D. Saltzberg, C. Schnaible, B. Stone, V. Valuev
University of California, Riverside, Riverside, USA
K. Burt, Y. Chen, R. Clare, J.W. Gary, S.M.A. Ghiasi Shirazi, G. Hanson, G. Karapostoli,O.R. Long, N. Manganelli, M. Olmedo Negrete, M.I. Paneva, W. Si, S. Wimpenny, Y. Zhang
University of California, San Diego, La Jolla, USA
J.G. Branson, P. Chang, S. Cittolin, S. Cooperstein, N. Deelen, M. Derdzinski, J. Duarte,R. Gerosa, D. Gilbert, B. Hashemi, D. Klein, V. Krutelyov, J. Letts, M. Masciovecchio, S. May,S. Padhi, M. Pieri, V. Sharma, M. Tadel, F. W ¨urthwein, A. Yagil
University of California, Santa Barbara - Department of Physics, Santa Barbara, USA
N. Amin, R. Bhandari, C. Campagnari, M. Citron, A. Dorsett, V. Dutta, J. Incandela, B. Marsh,H. Mei, A. Ovcharova, H. Qu, M. Quinnan, J. Richman, U. Sarica, D. Stuart, S. Wang
California Institute of Technology, Pasadena, USA
D. Anderson, A. Bornheim, O. Cerri, I. Dutta, J.M. Lawhorn, N. Lu, J. Mao, H.B. Newman,T.Q. Nguyen, J. Pata, M. Spiropulu, J.R. Vlimant, S. Xie, Z. Zhang, R.Y. Zhu Carnegie Mellon University, Pittsburgh, USA
J. Alison, M.B. Andrews, T. Ferguson, T. Mudholkar, M. Paulini, M. Sun, I. Vorobiev,M. Weinberg
University of Colorado Boulder, Boulder, USA
J.P. Cumalat, W.T. Ford, E. MacDonald, T. Mulholland, R. Patel, A. Perloff, K. Stenson,K.A. Ulmer, S.R. Wagner
Cornell University, Ithaca, USA
J. Alexander, Y. Cheng, J. Chu, D.J. Cranshaw, A. Datta, A. Frankenthal, K. Mcdermott,J. Monroy, J.R. Patterson, D. Quach, A. Ryd, W. Sun, S.M. Tan, Z. Tao, J. Thom, P. Wittich,M. Zientek
Fermi National Accelerator Laboratory, Batavia, USA
S. Abdullin, M. Albrow, M. Alyari, G. Apollinari, A. Apresyan, A. Apyan, S. Banerjee,L.A.T. Bauerdick, A. Beretvas, D. Berry, J. Berryhill, P.C. Bhat, K. Burkett, J.N. Butler, A. Canepa,G.B. Cerati, H.W.K. Cheung, F. Chlebana, M. Cremonesi, V.D. Elvira, J. Freeman, Z. Gecse,E. Gottschalk, L. Gray, D. Green, S. Gr ¨unendahl, O. Gutsche, R.M. Harris, S. Hasegawa,R. Heller, T.C. Herwig, J. Hirschauer, B. Jayatilaka, S. Jindariani, M. Johnson, U. Joshi,T. Klijnsma, B. Klima, M.J. Kortelainen, S. Lammel, J. Lewis, D. Lincoln, R. Lipton, M. Liu,T. Liu, J. Lykken, K. Maeshima, D. Mason, P. McBride, P. Merkel, S. Mrenna, S. Nahn, V. O’Dell,V. Papadimitriou, K. Pedro, C. Pena , O. Prokofyev, F. Ravera, A. Reinsvold Hall, L. Ristori,B. Schneider, E. Sexton-Kennedy, N. Smith, A. Soha, W.J. Spalding, L. Spiegel, S. Stoynev,J. Strait, L. Taylor, S. Tkaczyk, N.V. Tran, L. Uplegger, E.W. Vaandering, M. Wang, H.A. Weber,A. Woodard University of Florida, Gainesville, USA
D. Acosta, P. Avery, D. Bourilkov, L. Cadamuro, V. Cherepanov, F. Errico, R.D. Field,D. Guerrero, B.M. Joshi, M. Kim, J. Konigsberg, A. Korytov, K.H. Lo, K. Matchev, N. Menendez,G. Mitselmakher, D. Rosenzweig, K. Shi, J. Wang, S. Wang, X. Zuo
Florida International University, Miami, USA
Y.R. Joshi
Florida State University, Tallahassee, USA
T. Adams, A. Askew, D. Diaz, R. Habibullah, S. Hagopian, V. Hagopian, K.F. Johnson,R. Khurana, T. Kolberg, G. Martinez, H. Prosper, C. Schiber, R. Yohay, J. Zhang
Florida Institute of Technology, Melbourne, USA
M.M. Baarmand, S. Butalla, T. Elkafrawy , M. Hohlmann, D. Noonan, M. Rahmani,M. Saunders, F. Yumiceva University of Illinois at Chicago (UIC), Chicago, USA
M.R. Adams, L. Apanasevich, H. Becerril Gonzalez, R. Cavanaugh, X. Chen, S. Dittmer,O. Evdokimov, C.E. Gerber, D.A. Hangal, D.J. Hofman, C. Mills, G. Oh, T. Roy, M.B. Tonjes,N. Varelas, J. Viinikainen, H. Wang, X. Wang, Z. Wu
The University of Iowa, Iowa City, USA
M. Alhusseini, B. Bilki , K. Dilsiz , S. Durgut, R.P. Gandrajula, M. Haytmyradov,V. Khristenko, O.K. K ¨oseyan, J.-P. Merlo, A. Mestvirishvili , A. Moeller, J. Nachtman,H. Ogul , Y. Onel, F. Ozok , A. Penzo, C. Snyder, E. Tiras, J. Wetzel, K. Yi Johns Hopkins University, Baltimore, USA O. Amram, B. Blumenfeld, L. Corcodilos, M. Eminizer, A.V. Gritsan, S. Kyriacou,P. Maksimovic, C. Mantilla, J. Roskes, M. Swartz, T. ´A. V´ami
The University of Kansas, Lawrence, USA
C. Baldenegro Barrera, P. Baringer, A. Bean, A. Bylinkin, T. Isidori, S. Khalil, J. King,G. Krintiras, A. Kropivnitskaya, C. Lindsey, W. Mcbrayer, N. Minafra, M. Murray, C. Rogan,C. Royon, S. Sanders, E. Schmitz, J.D. Tapia Takaki, Q. Wang, J. Williams, G. Wilson
Kansas State University, Manhattan, USA
S. Duric, A. Ivanov, K. Kaadze, D. Kim, Y. Maravin, D.R. Mendis, T. Mitchell, A. Modak,A. Mohammadi
Lawrence Livermore National Laboratory, Livermore, USA
F. Rebassoo, D. Wright
University of Maryland, College Park, USA
E. Adams, A. Baden, O. Baron, A. Belloni, S.C. Eno, Y. Feng, N.J. Hadley, S. Jabeen, G.Y. Jeng,R.G. Kellogg, T. Koeth, A.C. Mignerey, S. Nabili, M. Seidel, A. Skuja, S.C. Tonwar, L. Wang,K. Wong
Massachusetts Institute of Technology, Cambridge, USA
D. Abercrombie, B. Allen, R. Bi, S. Brandt, W. Busza, I.A. Cali, Y. Chen, M. D’Alfonso,G. Gomez Ceballos, M. Goncharov, P. Harris, D. Hsu, M. Hu, M. Klute, D. Kovalskyi, J. Krupa,Y.-J. Lee, P.D. Luckey, B. Maier, A.C. Marini, C. Mcginn, C. Mironov, S. Narayanan, X. Niu,C. Paus, D. Rankin, C. Roland, G. Roland, Z. Shi, G.S.F. Stephans, K. Sumorok, K. Tatar,D. Velicanu, J. Wang, T.W. Wang, Z. Wang, B. Wyslouch
University of Minnesota, Minneapolis, USA
R.M. Chatterjee, A. Evans, S. Guts † , P. Hansen, J. Hiltbrand, Sh. Jain, M. Krohn, Y. Kubota,Z. Lesko, J. Mans, M. Revering, R. Rusack, R. Saradhy, N. Schroeder, N. Strobbe, M.A. Wadud University of Mississippi, Oxford, USA
J.G. Acosta, S. Oliveros
University of Nebraska-Lincoln, Lincoln, USA
K. Bloom, S. Chauhan, D.R. Claes, C. Fangmeier, L. Finco, F. Golf, J.R. Gonz´alez Fern´andez,R. Kamalieddin, I. Kravchenko, J.E. Siado, G.R. Snow † , B. Stieger, W. Tabb State University of New York at Buffalo, Buffalo, USA
G. Agarwal, C. Harrington, L. Hay, I. Iashvili, A. Kharchilava, C. McLean, D. Nguyen,A. Parker, J. Pekkanen, S. Rappoccio, B. Roozbahani
Northeastern University, Boston, USA
G. Alverson, E. Barberis, C. Freer, Y. Haddad, A. Hortiangtham, G. Madigan, B. Marzocchi,D.M. Morse, V. Nguyen, T. Orimoto, L. Skinnari, A. Tishelman-Charny, T. Wamorkar, B. Wang,A. Wisecarver, D. Wood
Northwestern University, Evanston, USA
S. Bhattacharya, J. Bueghly, Z. Chen, A. Gilbert, T. Gunter, K.A. Hahn, N. Odell, M.H. Schmitt,K. Sung, M. Velasco
University of Notre Dame, Notre Dame, USA
R. Bucci, N. Dev, R. Goldouzian, M. Hildreth, K. Hurtado Anampa, C. Jessop, D.J. Karmgard,K. Lannon, W. Li, N. Loukas, N. Marinelli, I. Mcalister, F. Meng, K. Mohrman, Y. Musienko ,R. Ruchti, P. Siddireddy, S. Taroni, M. Wayne, A. Wightman, M. Wolf, L. Zygala The Ohio State University, Columbus, USA
J. Alimena, B. Bylsma, B. Cardwell, L.S. Durkin, B. Francis, C. Hill, W. Ji, A. Lefeld, B.L. Winer,B.R. Yates
Princeton University, Princeton, USA
G. Dezoort, P. Elmer, B. Greenberg, N. Haubrich, S. Higginbotham, A. Kalogeropoulos,G. Kopp, S. Kwan, D. Lange, M.T. Lucchini, J. Luo, D. Marlow, K. Mei, I. Ojalvo, J. Olsen,C. Palmer, P. Pirou´e, D. Stickland, C. Tully
University of Puerto Rico, Mayaguez, USA
S. Malik, S. Norberg
Purdue University, West Lafayette, USA
V.E. Barnes, R. Chawla, S. Das, L. Gutay, M. Jones, A.W. Jung, B. Mahakud, G. Negro,N. Neumeister, C.C. Peng, S. Piperov, H. Qiu, J.F. Schulte, N. Trevisani, F. Wang, R. Xiao, W. Xie
Purdue University Northwest, Hammond, USA
T. Cheng, J. Dolen, N. Parashar
Rice University, Houston, USA
A. Baty, S. Dildick, K.M. Ecklund, S. Freed, F.J.M. Geurts, M. Kilpatrick, A. Kumar, W. Li,B.P. Padley, R. Redjimi, J. Roberts † , J. Rorie, W. Shi, A.G. Stahl Leiton, Z. Tu, A. Zhang University of Rochester, Rochester, USA
A. Bodek, P. de Barbaro, R. Demina, J.L. Dulemba, C. Fallon, T. Ferbel, M. Galanti, A. Garcia-Bellido, O. Hindrichs, A. Khukhunaishvili, E. Ranken, R. Taus
Rutgers, The State University of New Jersey, Piscataway, USA
B. Chiarito, J.P. Chou, A. Gandrakota, Y. Gershtein, E. Halkiadakis, A. Hart, M. Heindl,E. Hughes, S. Kaplan, O. Karacheban , I. Laflotte, A. Lath, R. Montalvo, K. Nash, M. Osherson,S. Salur, S. Schnetzer, S. Somalwar, R. Stone, S.A. Thayil, S. Thomas University of Tennessee, Knoxville, USA
H. Acharya, A.G. Delannoy, S. Spanier
Texas A&M University, College Station, USA
O. Bouhali , M. Dalchenko, A. Delgado, R. Eusebi, J. Gilmore, T. Huang, T. Kamon , H. Kim,S. Luo, S. Malhotra, D. Marley, R. Mueller, D. Overton, L. Perni`e, D. Rathjens, A. Safonov Texas Tech University, Lubbock, USA
N. Akchurin, J. Damgov, V. Hegde, S. Kunori, K. Lamichhane, S.W. Lee, T. Mengke,S. Muthumuni, T. Peltola, S. Undleeb, I. Volobouev, Z. Wang, A. Whitbeck
Vanderbilt University, Nashville, USA
E. Appelt, S. Greene, A. Gurrola, R. Janjam, W. Johns, C. Maguire, A. Melo, H. Ni, K. Padeken,F. Romeo, P. Sheldon, S. Tuo, J. Velkovska, M. Verweij
University of Virginia, Charlottesville, USA
L. Ang, M.W. Arenton, B. Cox, G. Cummings, J. Hakala, R. Hirosky, M. Joyce, A. Ledovskoy,C. Neu, B. Tannenwald, Y. Wang, E. Wolfe, F. Xia
Wayne State University, Detroit, USA
P.E. Karchin, N. Poudyal, J. Sturdy, P. Thapa
University of Wisconsin - Madison, Madison, WI, USA
K. Black, T. Bose, J. Buchanan, C. Caillol, S. Dasu, I. De Bruyn, L. Dodd, C. Galloni, H. He, M. Herndon, A. Herv´e, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless,J. Madhusudanan Sreekala, A. Mallampalli, D. Pinna, T. Ruggles, A. Savin, V. Shang, V. Sharma,W.H. Smith, D. Teague, S. Trembath-reichert, W. Vetens † : Deceased1: Also at Vienna University of Technology, Vienna, Austria2: Also at Department of Basic and Applied Sciences, Faculty of Engineering, Arab Academyfor Science, Technology and Maritime Transport, Alexandria, Egypt3: Also at Universit´e Libre de Bruxelles, Bruxelles, Belgium4: Also at IRFU, CEA, Universit´e Paris-Saclay, Gif-sur-Yvette, France5: Also at Universidade Estadual de Campinas, Campinas, Brazil6: Also at Federal University of Rio Grande do Sul, Porto Alegre, Brazil7: Also at UFMS, Nova Andradina, Brazil8: Also at Universidade Federal de Pelotas, Pelotas, Brazil9: Also at University of Chinese Academy of Sciences, Beijing, China10: Also at Institute for Theoretical and Experimental Physics named by A.I. Alikhanov ofNRC ‘Kurchatov Institute’, Moscow, Russia11: Also at Joint Institute for Nuclear Research, Dubna, Russia12: Also at British University in Egypt, Cairo, Egypt13: Now at Ain Shams University, Cairo, Egypt14: Now at Fayoum University, El-Fayoum, Egypt15: Also at Purdue University, West Lafayette, USA16: Also at Universit´e de Haute Alsace, Mulhouse, France17: Also at Erzincan Binali Yildirim University, Erzincan, Turkey18: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland19: Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany20: Also at University of Hamburg, Hamburg, Germany21: Also at Department of Physics, Isfahan University of Technology, Isfahan, Iran, Isfahan,Iran22: Also at Brandenburg University of Technology, Cottbus, Germany23: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University,Moscow, Russia24: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary, Debrecen,Hungary25: Also at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt26: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary27: Also at MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´andUniversity, Budapest, Hungary, Budapest, Hungary28: Also at IIT Bhubaneswar, Bhubaneswar, India, Bhubaneswar, India29: Also at Institute of Physics, Bhubaneswar, India30: Also at G.H.G. Khalsa College, Punjab, India31: Also at Shoolini University, Solan, India32: Also at University of Hyderabad, Hyderabad, India33: Also at University of Visva-Bharati, Santiniketan, India34: Also at Indian Institute of Technology (IIT), Mumbai, India35: Also at Deutsches Elektronen-Synchrotron, Hamburg, Germany36: Also at Department of Physics, University of Science and Technology of Mazandaran,Behshahr, Iran37: Now at INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy38: Also at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy39: Also at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy40: Also at Riga Technical University, Riga, Latvia, Riga, Latvia41: Also at Consejo Nacional de Ciencia y Tecnolog´ıa, Mexico City, Mexico42: Also at Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland43: Also at Institute for Nuclear Research, Moscow, Russia44: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’(MEPhI), Moscow, Russia45: Also at Institute of Nuclear Physics of the Uzbekistan Academy of Sciences, Tashkent,Uzbekistan46: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia47: Also at University of Florida, Gainesville, USA48: Also at Imperial College, London, United Kingdom49: Also at P.N. Lebedev Physical Institute, Moscow, Russia50: Also at California Institute of Technology, Pasadena, USA51: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia52: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia53: Also at Universit`a degli Studi di Siena, Siena, Italy54: Also at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka55: Also at INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy, Pavia, Italy56: Also at National and Kapodistrian University of Athens, Athens, Greece57: Also at Universit¨at Z ¨urich, Zurich, Switzerland58: Also at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria, Vienna, Austria59: Also at Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France60: Also at S¸ ırnak University, Sirnak, Turkey61: Also at Department of Physics, Tsinghua University, Beijing, China, Beijing, China62: Also at Near East University, Research Center of Experimental Health Science, Nicosia,Turkey63: Also at Beykent University, Istanbul, Turkey, Istanbul, Turkey64: Also at Istanbul Aydin University, Application and Research Center for Advanced Studies(App. & Res. Cent. for Advanced Studies), Istanbul, Turkey65: Also at Mersin University, Mersin, Turkey66: Also at Piri Reis University, Istanbul, Turkey67: Also at Adiyaman University, Adiyaman, Turkey68: Also at Ozyegin University, Istanbul, Turkey69: Also at Izmir Institute of Technology, Izmir, Turkey70: Also at Necmettin Erbakan University, Konya, Turkey71: Also at Bozok Universitetesi Rekt ¨orl ¨ug ¨u, Yozgat, Turkey72: Also at Marmara University, Istanbul, Turkey73: Also at Milli Savunma University, Istanbul, Turkey74: Also at Kafkas University, Kars, Turkey75: Also at Istanbul Bilgi University, Istanbul, Turkey76: Also at Hacettepe University, Ankara, Turkey77: Also at Vrije Universiteit Brussel, Brussel, Belgium78: Also at School of Physics and Astronomy, University of Southampton, Southampton,United Kingdom79: Also at IPPP Durham University, Durham, United Kingdom80: Also at Monash University, Faculty of Science, Clayton, Australia0