Search for a heavy vector resonance decaying to a Z boson and a Higgs boson in proton-proton collisions at \sqrt{s} = 13 TeV
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-EP-2021-0092021/02/17
CMS-B2G-19-006
Search for a heavy vector resonance decaying to a Z bosonand a Higgs boson in proton-proton collisions at √ s =
13 TeV
The CMS Collaboration * Abstract
This paper describes the search for a heavy vector resonance decaying into a Z bo-son and the standard model Higgs boson, where the Z boson is identified through itsleptonic decays to electrons, muons, or neutrinos, and the Higgs boson is identifiedthrough its hadronic decays. The search is performed in a Lorentz-boosted regimefor resonances with masses larger than 800 GeV. The data samples of proton-protoncollisions were collected from 2016 to 2018 at a center-of-mass energy of 13 TeV by theCMS experiment at CERN and correspond to an integrated luminosity of 137 fb − .Upper limits are derived on the production of a narrow heavy resonance Z (cid:48) as a func-tion of the Z (cid:48) mass, and a mass below 3.5 and 3.7 TeV is excluded at 95% confidencelevel in models where the heavy vector boson couples exclusively to fermions and tobosons, respectively. These are the most stringent limits placed on the Heavy VectorTriplet Z (cid:48) model to date. If the heavy vector boson couples exclusively to standardmodel bosons, upper limits on the product of the cross section and branching fractionare set between 23 and 0.3 fb for a Z (cid:48) mass between 0.8 and 4.6 TeV, respectively. Thisis the first limit set on a heavy vector boson coupling exclusively to standard modelbosons in its production and decay. Submitted to the European Physical Journal C © 2021 CERN for the benefit of the CMS Collaboration. CC-BY-4.0 license * See Appendix A for the list of collaboration members a r X i v : . [ h e p - e x ] F e b The discovery of a Higgs boson (H) [1–3] by the ATLAS and CMS Collaborations at the CERNLHC, with properties consistent with expectations from the standard model (SM) of particlephysics, has emphasized the hierarchy problem of the SM. In the SM, the measured H massof 125 GeV [4, 5], given its fundamental scalar nature [6, 7], requires extreme fine tuning ofquantum corrections, suggesting that the SM may be incomplete. Many different exotic models,such as the little Higgs [8–10] and composite Higgs [11–13] models, predict the existence of newresonances decaying to a vector boson (V = W, Z) and a Higgs boson [14–18].Heavy vector triplet (HVT) models [19] introduce new heavy vector bosons (W (cid:48) , Z (cid:48) ) that coupleto the Higgs and SM gauge bosons with the parameters c H and g V , and to the fermions via thecombination ( g / g V ) c F , where c F is the fermion coupling and g is the SM SU ( ) L gauge cou-pling. The HVT couplings are expected to be of order unity in most models. Three benchmarkmodels, denoted as models A, B, and C are considered in this paper.In model A, the coupling strengths to fermions and gauge bosons are comparable and theheavy resonances decay predominantly to fermions, as is the case in some extensions of the SMgauge group [20]. In model B, the fermionic couplings are suppressed, as in composite Higgsmodels. In model C, the fermionic couplings are set to zero, so the resonances are producedonly through vector boson fusion (VBF) and decay exclusively to a pair of SM bosons. Theparameters used for model A are g V = c H = − c F = − g V = c H = − c F = g V = c H = c F = √ s =
13 TeV in the semileptonic final state [14, 15, 21] and in the fullyhadronic final state [22–24] by the CMS and ATLAS Collaborations. The most stringent lowerlimit on the Z (cid:48) mass at 95% confidence level using the semileptonic (fully hadronic) final stateis 2.65 (2.2) TeV in HVT model A and 2.83 (2.65) TeV in HVT model B [15, 24].This paper describes a search for a heavy resonance (denoted as X for the reconstructed quan-tity and Z (cid:48) for the particle predicted by the theory) decaying to a Z boson and a Higgs boson.The Z boson is identified via a pair of electrons or muons, or a large amount of missing trans-verse momentum ( (cid:126) p missT ) measured in the detector due to the presence of at least two neutrinos.The Higgs boson is identified via its hadronic decays, either directly to a pair of heavy quarks,or via cascade decays dominated by WW and ZZ. We explore the regime where the Higgsboson has a large Lorentz boost and is reconstructed as a single, large-radius jet, referred toas j H , with characteristic substructure and identified via its mass and possible presence of bquark subjets. If a heavy resonance couples exclusively to the SM bosons, it can be producedonly through VBF. Dedicated categories are defined in order to enhance the sensitivity to thisproduction mode, exploiting the presence of two jets with large transverse momenta ( p T ) in theforward region of the detector, which are remnants of the initial-state quarks participating inthe VBF interaction. The Feynman diagrams for the signal processes are depicted in Fig.1.The search is performed by examining the distribution of the reconstructed mass ( m X ) or trans-verse mass ( m TX ) of the heavy resonance for a localized excess of events. The main backgroundnormalization is determined from data in sideband regions (SBs) of the j H mass distribution,and extrapolated to the signal region (SR) through analytical functions derived from simula-tion. Z qq ZH VV Z q q ZH Figure 1: The leading order Feynman diagrams of the heavy resonance Z (cid:48) production throughqq annihilation (left) and vector boson fusion (right), decaying to a Z boson (Z) and a Higgsboson (H).
The CMS detector features a silicon pixel and strip tracker, a lead tungstate crystal electromag-netic calorimeter (ECAL), and a brass and scintillator hadron calorimeter, each composed ofa barrel and two endcap sections. These detectors reside within a superconducting solenoid,which provides a magnetic field of 3.8 T. Forward calorimeters extend the pseudorapidity η coverage up to | η | < µ s. The secondlevel, known as the high-level trigger (HLT), consists of a farm of processors running a versionof the full event reconstruction software optimized for fast processing, and reduces the eventrate to around 1 kHz before data storage. The data samples used in this search were collected during the period 2016–2018, with theCMS detector at the LHC in proton-proton (pp) collisions at a center-of-mass energy of 13 TeV,resulting in a combined integrated luminosity of 137 fb − .The signal samples are generated at leading order (LO) through qq annihilation, taking thecross sections from HVT models A and B [19], or through VBF with the cross section fromHVT model C, using the M AD G RAPH MC @ NLO (cid:96) = e or µ ) or neutrinos, including cascade decaysinvolving tau leptons. There is no restriction on the decay channels for the Higgs boson and itsdecay particles, which decay according to the SM branching fractions.The SM background for this search is dominated by V+ jets production, with the V boson de-caying as Z → νν , Z → (cid:96)(cid:96) , or W → (cid:96) ν , where (cid:96) = e, µ , τ . The V+ jets background sample isproduced with the M AD G RAPH MC @ NLO generator at LO. The sample is further normalized to account for next-to-LO (NLO) in electroweak (EW) and next-to-NLO (NNLO) in quantumchromodynamics (QCD) corrections to the cross section from Ref. [29]. The top quark pair(tt) and single top quark (t +X ) t -channel and t W production are generated at NLO in QCDwith the POWHEG OP ++ 2.0 [36] at NNLO in QCD with next-to-next-to-leading logarithmic softgluon resummation accuracy. The single top quark s -channel, VV, and VH samples are simu-lated at NLO in QCD with the M AD G RAPH MC @ NLO generator.The NNPDF 3.0 [37] set of parton distribution functions (PDF) is used to simulate the hard pro-cess for the 2016 data and the NNPDF 3.1 [38] set is used for 2017 and 2018. Parton showeringand hadronization processes are performed with
PYTHIA
PYTHIA
EANT
Events in the CMS detector are reconstructed using the particle-flow (PF) algorithm [45], whichcombines information from all subdetectors in order to reconstruct stable particles (muons,electrons, photons, neutral and charged hadrons). Jets are reconstructed from PF candidatesclustered with the anti- k T algorithm [46], with a distance parameter of 0.4 (AK4 jets) or 0.8 (AK8jets), using the F AST J ET p is taken to be theprimary pp interaction vertex. Here the physics objects are the jets, clustered using the jet find-ing algorithms with the tracks assigned to candidate vertices as inputs, and the associated (cid:126) p missT taken as the negative vector p T sum of those jets. Two different methods to remove contribu-tions from pileup are used: for the AK4 jets, pileup is accounted for via the charged-hadron sub-traction algorithm [49] in conjunction with the jet area method [50], while for the AK8 jets thepileup-per-particle identification algorithm [51] is employed. The jet energy resolution, afterthe application of corrections to the jet energy, is 4% at 1 TeV [52]. For the AK4 jets, p T >
30 GeVand | η | < ∆ R ( j , (cid:96) ) = √ ∆ η ( j , (cid:96) ) + ∆ φ ( j , (cid:96) ) > φ is the azimuthal angle. The AK8 jets must satisfy p T >
200 GeV and | η | < (cid:126) p missT is computed as the negative vector p T sum of allthe PF candidates in an event. The (cid:126) p missT is corrected for adjustments to the energy scale of thereconstructed AK4 jets in the event, and its magnitude is denoted as p missT [53]. The observable H missT is defined as the magnitude of the vector p T sum of all AK4 jets with p T >
30 GeV and | η | < m j ) is calculated, after applying a modified mass-drop al-gorithm [54, 55]. The mass-drop algorithm used here is known as the soft-drop algorithm [56],with parameters β = z cut = R = p T . The groomed jet mass iscalibrated in a tt sample enriched in hadronically decaying W bosons [57].The identification of jets that originate from b quarks is performed with the DeepCSV algo-rithm [58], which is based on a deep neural network with information on tracks and secondary vertices associated with the jet as inputs. The DeepCSV algorithm is applied to AK4 jets andthe two highest p T AK8 subjets. A jet is considered as b tagged if the output discriminatorvalue is larger than a defined threshold, corresponding to a 75% b tagging efficiency with aprobability for mistagging jets originating from the hadronization of gluons or u/d/s quarksof about 3%. The simulated samples are reweighted to account for small differences in the btagging efficiency from values obtained in data.Electrons are reconstructed from ECAL energy deposits in the range | η | < p T sum of all particles within a cone of ∆ R = | η | < p T sum of all the reconstructedtracks within a cone ∆ R = p T . The efficiency to reconstruct and identify muons is largerthan 96% [60].Hadronically decaying τ leptons ( τ h ) are reconstructed by combining one or three chargedparticles with up to two neutral pion candidates. The selection criteria for the τ h candidates,which are used to veto various backgrounds, are p T >
18 GeV, | η | < ∆ R > ∆ R is a candidate’s separation from isolated electrons and muons in the event [61]. Events are divided into categories depending on the number and flavor of the reconstructedleptons, the number of b-tagged subjets of the Higgs candidate jet ( j H ), and the presence offorward jets consistent with originating from VBF processes. In total, 12 categories are definedand listed in Table 1.Table 1: List of the 12 event categories used in the analysis.0 (cid:96) , 2b tag, non-VBF 0 (cid:96) , 2b tag, VBF2e, 2b tag, non-VBF 2e, 2b tag, VBF2 µ , 2b tag, non-VBF 2 µ , 2b tag, VBF0 (cid:96) , ≤
1b tag, non-VBF 0 (cid:96) , ≤
1b tag, VBF2e, ≤
1b tag, non-VBF 2e, ≤
1b tag, VBF2 µ , ≤
1b tag, non-VBF 2 µ , ≤
1b tag, VBFThe highest p T AK8 jet in the event is assigned to j H , and is required to have a transversemomentum p HT >
200 GeV and | η | < j H and isolated leptons from the Z boson decay is requiredto satisfy ∆ R ( j H , (cid:96) ) > j H jet is required to be compatible with the H mass(105 < m j H <
135 GeV). It can have 0, 1, or 2 subjets that pass the b tagging selection. If both subjets are b tagged, the event belongs to the 2b tag category, otherwise it is assigned to the ≤
1b tag category.The 0 (cid:96) categories require p missT >
250 GeV, originating from the Lorentz-boosted Z boson de-caying to two neutrinos, which leave the detector unobserved. Data are collected using trig-ger selections that require p missT >
110 GeV, calculated with or without considering muons, or H missT >
110 GeV. The minimal azimuthal angular separation between all AK4 jets and the (cid:126) p missT vector has to satisfy ∆ φ ( j , (cid:126) p missT ) > j H and (cid:126) p missT must satisfy ∆ φ ( j H , (cid:126) p missT ) >
2. Events arising fromdetector noise are removed by requiring that the fractional contribution of charged hadron can-didates to the H momentum be larger than 0.1, and the ratio p missT / p HT be larger than 0.6. Eventswith isolated leptons with p T >
10 GeV or hadronically decaying τ leptons with p T >
18 GeVare removed in order to reduce the contribution from other SM processes. The tt contributionis reduced by removing events with an additional b-tagged AK4 jet not overlapping with j H such that ∆ R ( j , j H ) > j H momentum and the (cid:126) p missT are usedto compute the transverse mass m TX = (cid:112) p missT p HT ( − cos ∆ φ ( (cid:126) p missT , (cid:126) p HT )) . In the VBF category,the condition | η j H | < j H to reject events where the H and Z boson areemitted at large η , resulting in a significant underestimation of m TX .For the 2e categories, data are collected using an electron trigger that requires either an isolatedelectron with p T >
35 GeV or a nonisolated electron with p T >
115 GeV. In the 2 µ categories,a muon trigger that requires a nonisolated muon with p T >
50 GeV is used to collect data. Forboth the 2e and 2 µ categories, the two selected leptons must have opposite charge, p T > p T >
200 GeV. The Z boson mass window is selected according to the dileptonmass resolution, which is 3 (4)% for an electron (muon) pair . A more stringent selection woulddecrease both the signal and the Z+ jets background selection efficiency by the same amount,thus reducing the signal sensitivity. The separation between the Z boson candidate and j H is required to be ∆ R ( j H , Z ) > | ∆ η ( j H , Z ) | < (cid:96) and 2 (cid:96) categories by requiring two additionalAK4 jets (j) with | η j | < ∆ R ( j , j H ) > j H , have η j values of opposite sign, a dijet mass m jj >
500 GeV, and that satisfy a separation ∆ η jj > m X or m TX larger than 1200 GeV for the ≤
1b tag, non-VBF categories, and larger than 750 GeV for the other categories to ensure the smoothness ofthe background model. The product of the signal geometrical acceptance and the selectionefficiency is reported in Fig. 2.
The most important SM background is vector boson production in association with b-taggedjets (V+ jets). The V+ jets background is estimated using control samples in data to reducethe dependence on simulation. Minor SM backgrounds are tt and single top quark processes,SM diboson production (VV), and SM H production in association with a vector boson (VH),all of which are estimated based on simulation. The SM ZH production is considered as a Z' m - - -
10 1 e ff i c i en cy · A cc ep t an c e £ Total efficiency, non-VBF signal nn fi ZH, Z fi Z'
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Simulation
Figure 2: The product of signal acceptance and efficiency in the 0 (cid:96) (left column) and 2 (cid:96) (rightcolumn) categories for the signal produced via qq annihilation (upper row) and vector bosonfusion (lower row).background in this analysis. However, this process can be distinguished from the signal be-cause of the non-resonant distribution in the ZH invariant mass and by the softer p T spectraof the H and Z boson. The jet mass distribution is split into a signal-enriched region (SR) with105 < m j H <
135 GeV, and low-mass and high-mass sidebands (SB) with 30 < m j H <
65 GeV(LSB) and 135 < m j H <
250 GeV (HSB), respectively. The jet mass range 65 < m j H <
105 GeV,a region enriched with boosted vector bosons (VR), is excluded and kept blinded in orderto avoid potential contamination from a VV resonant signal, which is a subject of dedicatedsearches [16, 62, 63]. The background estimation consists of two separate steps to determine,first, the number of events and, second, the distribution of the main background in the SR.
The three groups of backgrounds (V+ jets, tt and single top quark, and VV and VH) are consid-ered separately, since each group has different physical properties leading to a different shapeof the jet mass distribution. An appropriate analytical function is chosen to describe the back-ground in each case. The V+ jets background’s Higgs candidate jet mass has a smoothly fallingshape with no peaks, therefore Chebyshev polynomials of order 1–4 are chosen to model thedistribution observed in data. The VV background has two peaks in the jet mass distribu-tion, corresponding to the W and Z bosons, and the VH background has a peak due to theHiggs boson. The tt and single top quark backgrounds are considered together, because theyboth have two peaks corresponding to W → qq (cid:48) decays and all-hadronic top quark decayst → Wb → qq (cid:48) b.The normalization of the simulated top quark background is corrected with a scale factor (SF)determined in high-purity top quark control regions. In the 0 (cid:96) category, the control region isdefined by the veto on the additional b-tagged AK4 jet being inverted. In the 2 (cid:96) categories, .1 Background normalization control region data are collected using the same trigger as for the 2e signal region, with arequirement that lepton flavors and charges are different, resulting in a 1e1 µ region, where theleptons must have a combined invariant mass m e µ >
110 GeV and a vector sum p e µ T >
120 GeV.Multiplicative SFs are calculated from the ratio of the event yield between data and simulationand are applied to the simulated samples in the SR. The uncertainties in the top quark SFsoriginate from the limited event count in the top quark control region and the extrapolationfrom the top quark control region to the SR. The systematic uncertainty in the 0 (cid:96) category isderived by varying the b tagging SF. For the 2 (cid:96) categories the uncertainties in the electron andmuon identification are taken into account. The electron and muon trigger uncertainties onlyaffect the 2 µ category because the electron trigger is used to provide the control region whilethe muon trigger is use to select the signal region. A normalization uncertainty is appliedto the VBF categories to account for the limited event counts in these control regions. Thenormalization uncertainty is taken as the deviation of the top quark SF from unity as shown inin Table 2.Table 2: Scale factors derived for the normalization of the tt and single top quark backgroundsfor different event categories. Uncertainties due to the limited size of the event samples (stat.)and systematic effects (syst.) are reported as well. The scale factors of the 2e and 2 µ categoriesare derived using the 1e1 µ top quark control region as described in the text.Non-VBF category tt, t +X SF ± stat. ± syst.2b tag 0 (cid:96) ± ± ± ± µ ± ± ≤
1b tag 0 (cid:96) ± ± ± ± µ ± ± ± stat. ± syst. ± VBF norm.2b tag 0 (cid:96) ± ± ± ± ± ± µ ± ± ± ≤
1b tag 0 (cid:96) ± ± ± ± ± ± µ ± ± ±
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DataZ(ll)+jets, t+XttVV, VHTotal bkg.Alt. func.
50 100 150 200 250 (GeV) jH m - - s ) / b k g - N da t a ( N Figure 3: Fit to the m j H distribution in data in the 2b tag (left column) and ≤
1b tag (right col-umn) non-VBF categories, for 0 (cid:96) (upper row), 2e (middle row), and 2 µ (lower row). The shadedbands around the total background estimate represent the uncertainty from the fit to data inthe jet mass SBs. The observed data are indicated by black markers. The vertical shaded bandindicates the VR region, which is blinded and not used in the fit to avoid potential contamina-tion from VV resonant signals. The dashed vertical lines separate the LSB, VR, SR, and HSB.The bottom panel shows ( N data − N bkg ) / σ for each bin, where σ is the statistical uncertainty indata. .1 Background normalization
50 100 150 200 250 (GeV) jH m E v en t s / G e V (13 TeV) -1
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50 100 150 200 250 (GeV) jH m - - s ) / b k g - N da t a ( N Figure 4: Fit to the m j H distribution in data in the 2b tag (left column) and ≤
1b tag (rightcolumn) VBF categories, for 0 (cid:96) (upper row), 2e (middle row), and 2 µ (lower row). The shadedbands around the total background estimate represent the uncertainty from the fit to data inthe jet mass SBs. The observed data are indicated by black markers. The observed data areindicated by black markers. The vertical shaded band indicates the VR region, which is blindedand not used in the fit to avoid potential contamination from VV resonant signals. The dashedvertical lines separate the LSB, VR, SR, and HSB. The bottom panel shows ( N data − N bkg ) / σ for each bin, where σ is the statistical uncertainty in data.0
1b tag (rightcolumn) VBF categories, for 0 (cid:96) (upper row), 2e (middle row), and 2 µ (lower row). The shadedbands around the total background estimate represent the uncertainty from the fit to data inthe jet mass SBs. The observed data are indicated by black markers. The observed data areindicated by black markers. The vertical shaded band indicates the VR region, which is blindedand not used in the fit to avoid potential contamination from VV resonant signals. The dashedvertical lines separate the LSB, VR, SR, and HSB. The bottom panel shows ( N data − N bkg ) / σ for each bin, where σ is the statistical uncertainty in data.0 Table 3: The expected and observed numbers of background events in the signal region forall event categories. The V+ jets background uncertainties originate from the variation of theparameters within the fit uncertainties (fit) and the difference between the nominal and alter-native function choice for the fit to m j H (alt). The tt and single top quark uncertainties arisefrom the m j H modeling, the statistical component of the top quark SF uncertainties, and theextrapolation uncertainty from the control region to the SR. The VV and VH normalizationuncertainties come from the m j H modeling. Non-VBF Category V+ jets ( ± fit) ( ± alt) tt, single top q VV, VH Bkg. sum Observed2b tag 0 (cid:96) ± ±
20 68 ± ±
10 474 ±
42 5492e 54 ± ± ± ± ±
10 572 µ ± ± ± ± ± ≤
1b tag 0 (cid:96) ± ±
51 7.3 ± ± ±
61 6972e 113 ± ±
27 1.6 ± ± ±
31 1302 µ ± ±
10 1.8 ± ± ±
13 154VBF Category V+ jets ( ± fit) ( ± alt) tt, single top q VV, VH Bkg. sum Observed2b tag 0 (cid:96) ± ± ± ± ± ± ± ± ± ± µ ± ± ± ± ± ≤
1b tag 0 (cid:96) ± ±
72 25 ± ± ±
73 5722e 137 ± ± ± ± ±
10 1682 µ ± ± ± ± ±
10 222
The m X and m TX distributions are estimated using the data in the jet mass SBs. An α function isthen defined as the ratio of the two functions describing the simulated m X (or m TX ) shape in theSR and SB region of the V+ jets background: α ( m ) = N V+ jetsSR ( m ) N V+ jetsSB ( m ) , (1)where N denotes the function and m represents either m X or m TX . The functions are normalizedto the number of events derived in Section 6.1 and shown in Table 3.The V+ jets background shape in the SR is thus estimated as the product of α ( m ) and the shapein the data SBs after subtracting the corresponding top quark and VV contributions: N V+ jetsSR ( m ) = (cid:104) N dataSB ( m ) − N topSB ( m ) − N VVSB ( m ) (cid:105) α ( m ) . (2)Finally, the expected number of background events in the SR is derived by adding the topquark and VV contributions to the V+ jets background distribution and taking the V+ jets nor-malization from the fit to data in the jet mass SBs: N bkgSR ( m ) = N V+ jetsSR ( m ) + N topSR ( m ) + N VVSR ( m ) . (3)The observed data, along with the expected backgrounds, are reported for each category inFigs. 5 and 6.The background estimation method is validated by splitting the LSB in two regions: 30 < m j H <
50 GeV and 50 < m j H <
65 GeV. The first one is used as a new LSB and the second one .3 Signal modeling as a proxy for the SR. The data yields and distributions are found to be compatible with theexpectation in all categories. In order to build a template for the signal extraction, the simulated signal mass points are fittedin the SR with the Crystal Ball function [65], which consists of a Gaussian core and a power-law function that describes the low-end tail below a certain threshold. The parameterization forintermediate mass points is determined by linearly interpolating the shape parameters derivedby fitting the generated mass points.
The systematic uncertainty in the V+ jets background is dominated by the statistical uncer-tainty of the number of data events in the SBs. The systematic uncertainties in the shape ofthe V+ jets background are estimated from the covariance matrix of the simultaneous fit of the m TX and m X distributions in data in the SBs, and in simulated V+ jets background events in thesignal and SB regions. Most of the effect of the uncertainties is correlated among the SB and SR,and cancels out in the α ratio. The tt and VV background shape uncertainties are propagatedfrom the covariance matrix of the fit to the simulation in the SR. The statistical treatment isconsistent with Ref. [16].The uncertainty in the top quark background normalization originates from a limited eventcount in data and simulated event samples in the control regions, and from the variations onthe requirements of lepton selection, b tagging SFs, and the VBF selection used to select eventsin the control region. The uncertainties are reported in Table 2. The uncertainties in the trigger,identification, and isolation efficiencies of leptons affect the normalization and shape of thesimulated signal and diboson background. The uncertainties are evaluated by moving the SFs,derived as the efficiency in data over the efficiency in simulation, up and down by one standarddeviation, and amount to 1–7%.The lepton scale and resolution affect both shape and normalization of the signal, leading toan uncertainty of 1–3%. The uncertainty from the effect of the p missT scale and resolution on thenormalization of the signal and VV,VH background is 1%. The jet energy scale and resolutionuncertainties amount to a 1% systematic uncertainty in the normalization and a shape varia-tion in the distribution of the signal and diboson background events. The uncertainty in the jetmass scale (resolution) adds a contribution of 0.6 (9.0)%) to the uncertainty in the signal andthe diboson background normalization. The jet mass scale and resolution depend on the choiceof the parton shower model, which affects the Higgs boson tagging and leads to an additionaluncertainty of 6% in the signal normalization. The uncertainty was evaluated by using HER - WIG ++ 2.7.1 [66] as an alternative showering algorithm. The impact of the b tagging systematicuncertainty in the signal efficiency depends on the mass of the resonance and has a range of4–15% for the 2b tag categories and 1–6% for the ≤
1b tag categories.The event yields and acceptances are affected by the choice of the parton distribution functions(PDFs) and the QCD factorization and renormalization scale uncertainties. The effects of thePDF choice on the acceptance and normalization of the Z (cid:48) signal are derived according to thePDF4LHC recommendations [67] and amount to 0.5% in the acceptance and 8–30% in the nor-malization of the signal, 0.2% in the acceptance and 4.7% in the normalization of the VV,VHbackground, and 0.1% in the acceptance and 0.1% in the normalization of the tt background.The factorization and renormalization scale uncertainties are 3–15%, depending on the reso- (GeV) XT m -
10 110 E v en t s / G e V Data )+jets n ),W(l nn Z(, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
137 fb
CMS (GeV) XT m - - s ) / b k g - N da t a ( N (GeV) XT m -
10 110 E v en t s / G e V Data )+jets n ),W(l nn Z(, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, non-VBF £ (GeV) XT m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
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CMS (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, non-VBF £ (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
137 fb
CMS , 2b tag, non-VBF m (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT model B = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, non-VBF £ , m (GeV) X m - - s ) / b k g - N da t a ( N Figure 5: Distributions in data in the 2b tag (left column) and ≤
1b tag (right column) non-VBFcategories, of m TX for 0 (cid:96) (upper row), and m X for 2e (middle row), and 2 µ (lower row). Thedistributions are shown up to 4000 GeV, which corresponds to the event with the highest m X or m TX observed in the SR. The shaded bands represent the uncertainty from the backgroundestimation. The observed data are represented by black markers, and the potential contributionof a resonance produced in the context of the HVT model B at m Z (cid:48) = ( N data − N bkg ) / σ for each bin, where σ is the statisticaluncertainty in data. (GeV) XT m -
10 110 E v en t s / G e V Data )+jets n ),W(l nn Z(, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
137 fb
CMS (GeV) XT m - - s ) / b k g - N da t a ( N (GeV) XT m -
10 110 E v en t s / G e V Data )+jets n ),W(l nn Z(, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, VBF £ (GeV) XT m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
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CMS (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, VBF £ (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
137 fb
CMS , 2b tag, VBF m (GeV) X m - - s ) / b k g - N da t a ( N (GeV) X m -
10 110 E v en t s / G e V DataZ(ll)+jets, t+XttVV, VHTotal bkg.Pre-fitHVT mod. C x100 = 2000 GeV Z' m (13 TeV) -1
137 fb
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1b tag, VBF £ , m (GeV) X m - - s ) / b k g - N da t a ( N Figure 6: Distributions in data in the 2b tag (left column) and ≤
1b tag (right column) VBFcategories, of m TX for 0 (cid:96) (upper row), and m X for 2e (middle row), and 2 µ (lower row). Thedistributions are shown up to 4000 GeV, which corresponds to the event with the highest m X or m TX observed in the SR. The shaded bands represent the uncertainty from the backgroundestimation. The observed data are represented by black markers, and the potential contributionof a resonance produced in the context of the HVT model C at m Z (cid:48) = ( N data − N bkg ) / σ for each bin, where σ is the statisticaluncertainty in data. nance mass for the signal, 18.9% for the VV,VH background, and 1% for the extrapolation ofthe top quark SFs to the SR.The darkening of ECAL crystals, due to radiation damage, leads to a gradual timing shift,which was not properly propagated to the level 1 trigger for 2016 and 2017 [68]. This effect isaccounted for by adding a 1% systematic uncertainty in the signal normalization. Additionalsystematic uncertainties come from estimations of the pileup contribution and the integratedluminosity [69–71]. A list of all systematic uncertainties is given in Table 4.Table 4: Summary of systematic uncertainties for the background and signal samples. Theentries labeled with † are also propagated to the shapes of the distributions. Uncertaintiesmarked with ‡ impact the signal cross section. Uncertainties in the same line are treated ascorrelated. All uncertainties except for in the integrated luminosity are considered correlatedacross the three years of data taking. V+ jets tt, t +X VV, VH SignalBkg. normalization 6–40% — — —Top quark background SFs — 0.4–9.5% — —Electron id., isolation — — 3.6%Muon id., isolation — — 4.9%Electron trigger — — 0.9%Muon trigger — — 7%Lepton scale and resolution † — — — 1–3% p missT scale and resolution — — 1%Jet energy scale † — — 1.0% 1.0%Jet energy resolution † — — 0.1% 0.1%Jet mass scale — — 0.6% 0.6%Jet mass resolution — — 9.0% 9.0%Higgs boson tagging — — — 6%b tagging — 1.4% (0 (cid:96) ) 0.6% ( ≤ ≤ Results are obtained from a combined profile likelihood fit to the unbinned m TX and m X distri-butions of signal and background, shown in Figs. 5 and 6. Systematic uncertainties are treatedas nuisance parameters and are profiled in the statistical interpretation [72–74]. The uncertain-ties in the signal normalization that are derived from the signal cross section are not profiled inthe likelihood, and are reported separately as the uncertainty band of the theoretical cross sec-tion. The statistical methods, including the treatment of the nuisance parameters, are describedin more detail in Ref. [16].The background-only hypothesis is tested against a hypothesis also considering Z (cid:48) → ZH sig-nal in all categories. A modified frequentist method is used to determine 95% confidence level(CL) upper limits on the product of cross section and branching fraction as a function of m X , in which the distribution of the profile likelihood test statistic is derived using an asymptoticapproximation [75].The exclusion limits on the product of resonance cross section and branching fraction B ( Z (cid:48) → ZH ) are reported as a function of the resonance mass in Fig. 7 for all categories, separatelyfor the non-VBF and the VBF signals. The 2 (cid:96) categories dominate the sensitivity for heavyresonance masses smaller than 1 TeV, because of the better experimental resolution; at largermasses, the 0 (cid:96) categories are more sensitive thanks to the larger branching fraction of the Zboson to neutrinos. The exclusion limits are shown up to 4.6 TeV, which corresponds to theevent with the highest m X or m TX observed either in the SB or SR. (GeV) Z' m Z H ) ( f b ) fi ( Z ' B ( Z ' ) s non-VBF signal (13 TeV) -1
137 fb
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95% CL upper limitsObservedMedian expected68% expected95% expectedHVT model AHVT model B
JHEP 11 (2018) 172ObservedMedian expected 1000 1500 2000 2500 3000 3500 4000 4500 (GeV) Z' m Z H ) ( f b ) fi ( Z ' B ( Z ' ) s VBF signal (13 TeV) -1
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95% CL upper limitsObservedMedian expected68% expected95% expectedHVT model C
Figure 7: Observed and expected 95% CL upper limit on σ B ( Z (cid:48) → ZH ) with all categoriescombined, for the non-VBF signal (left) and VBF signal (right), including all statistical and sys-tematic uncertainties. The inner green band and the outer yellow band indicate the regions con-taining 68 and 95%, respectively, of the distribution of expected limits under the background-only hypothesis. The solid curves and their shaded areas correspond to the product of thecross section and the branching fractions predicted by the HVT models A and B (left) and HVTmodel C (right), and their relative uncertainties. The CMS search for a heavy resonance using2016 data and the same final state [14] is shown as a comparison.The largest excess for the non-VBF signal, corresponding to a local significance of 3 standarddeviations, is observed at m X = (cid:48) boson with a mass smaller than 3.5 TeV is excludedat 95% CL in HVT model A, and a Z (cid:48) with mass smaller than 3.7 TeV is excluded in model B.The upper limit of the excluded mass range is increased by 0.85 (0.87) TeV and 1.3 (1.4) TeV) inHVT model A (model B) compared to searches using 2016 data and the same final state by theATLAS and CMS Collaborations, respectively [14, 15]. If the Z (cid:48) couples only to the SM bosonsand is produced exclusively through VBF as in HVT model C, the data set analyzed is notlarge enough to exclude any range of mass. Upper limits on the product of the cross sectionand branching fraction are set between 23 and 0.3 fb for a Z (cid:48) mass between 0.8 and 4.6 TeV,respectively.The exclusion limit of the non-VBF signal shown in Fig. 7 (left) can be interpreted as a limitin the space of the HVT model parameters [ g V c H , g c F / g V ]. Combining all categories, theexcluded region in such a parameter space for narrow resonances is shown in Fig. 8. The regionof parameter space where the natural resonance width is larger than the typical experimentalresolution of 4%, for which the narrow width assumption is not valid, is shaded. - - - H c V g1 - - V / g F c g (13 TeV) -1
137 fb
CMS > 4% Z' m Z' G = 2.0 TeV X m = 3.0 TeV X m = 4.0 TeV X mModel AModel B Figure 8: Observed exclusion limit in the space of the HVT model parameters [ g V c H , g c F / g V ],described in the text, for three different mass hypotheses of 2.0, 3.0, and 4.0 TeV for the non-VBFsignal. The shaded bands indicate the side of each contour that is excluded. The benchmarkscenarios corresponding to HVT models A and B are represented by a purple cross and a redpoint, respectively. The region of the parameter space where the natural resonance width ( Γ Z (cid:48) )is larger than the typical experimental resolution of 4%, for which the narrow-width approxi-mation is not valid, is shaded in grey. A search for a heavy resonance with a mass between 0.8 and 5.0 TeV, decaying to a Z boson anda Higgs boson, has been described. The data samples were collected by the CMS experiment inthe period 2016–2018 at √ s =
13 TeV and correspond to an integrated luminosity of 137 fb − .In the final states explored the Z boson decays leptonically, resulting in events with either zeroor two electrons or muons. Higgs bosons with a large Lorentz boost are reconstructed via theirdecays to hadrons. For models with a narrow spin-1 resonance, a new heavy vector boson Z (cid:48) with mass below 3.5 and 3.7 TeV is excluded at 95% confidence level in models where the heavyvector boson couples predominantly to fermions and bosons, respectively. These are the moststringent limits placed on the Heavy Vector Triplet Z (cid:48) model to date. If the heavy vector bosoncouples exclusively to standard model bosons, upper limits on the product of the cross sectionand branching fraction are set between 23 and 0.3 fb for a Z (cid:48) mass between 0.8 and 4.6 TeV,respectively. This is the first limit set on a heavy vector boson coupling exclusively to standardmodel bosons in its production and decay. 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 centres and personnel of the Worldwide LHC Computing Gridand other centres for delivering so effectively the computing infrastructure essential to ouranalyses. Finally, we acknowledge the enduring support for the construction and operationof the LHC, the CMS detector, and the supporting computing infrastructure provided by thefollowing funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, eferences CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, andNSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT(Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Fin-land); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NK-FIA (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, CIN-VESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (NewZealand); 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); ThEPCen-ter, 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, 724704, 752730, and 765710 (EuropeanUnion); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Hum-boldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation `a laRecherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Inno-vatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) un-der 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, and under project number400140256 - GRK2497; the Lend ¨ulet (“Momentum”) Program and the J´anos Bolyai ResearchScholarship of the Hungarian Academy of Sciences, 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 Industrial Research, India; the HOMINGPLUS program of the Foundation for Polish Science, cofinanced from European Union, Re-gional Development Fund, the Mobility Plus program of the Ministry of Science and HigherEducation, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428,Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National ResearchFund; the Ministry of Science and Higher Education, project no. 0723-2020-0041 (Russia); thePrograma Estatal de Fomento de la Investigaci ´on Cient´ıfica y T´ecnica de Excelencia Mar´ıa deMaeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias;the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the RachadapisekSompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the ChulalongkornAcademic into Its 2nd Century Project Advancement Project (Thailand); the Kavli Foundation;the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845;and the Weston Havens Foundation (USA).
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Yerevan Physics Institute, Yerevan, Armenia
A.M. Sirunyan † , A. Tumasyan Institut f ¨ur Hochenergiephysik, Wien, Austria
W. Adam, T. Bergauer, M. Dragicevic, J. Er ¨o, A. Escalante Del Valle, R. Fr ¨uhwirth , M. Jeitler ,N. Krammer, L. Lechner, D. Liko, I. Mikulec, F.M. Pitters, 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, A. Morton, D. M ¨uller, 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, 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, M. Gruchala, 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, K. Mondal, J. Prisciandaro, A. Taliercio, M. Teklishyn, P. Vischia, S. Wertz,S. Wuyckens
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
G.A. Alves, 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, H. BRANDAO MALBOUISSON,W. Carvalho, J. Chinellato , E. Coelho, E.M. Da Costa, G.G. Da Silveira , D. De Jesus Damiao,S. Fonseca De Souza, J. Martins , D. Matos Figueiredo, M. Medina Jaime , 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, 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 , a , L. Calligaris a , T.R. Fernandez Perez Tomei a , E.M. Gregores a , b , D.S. Lemos a ,P.G. Mercadante a , 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
A. Dimitrov, T. Ivanov, L. Litov, B. Pavlov, P. Petkov, A. Petrov
Beihang University, Beijing, China
T. Cheng, W. Fang , Q. Guo, H. Wang, L. Yuan Department of Physics, Tsinghua University, Beijing, China
M. Ahmad, G. Bauer, Z. Hu, Y. Wang, K. Yi
Institute of High Energy Physics, Beijing, China
E. Chapon, G.M. Chen , H.S. Chen , M. Chen, T. Javaid , A. Kapoor, D. Leggat, H. Liao,Z.-A. LIU , R. Sharma, A. Spiezia, J. Tao, J. Thomas-wilsker, 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, Q. Huang, A. Levin, Q. Li, M. Lu, 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, A. Sarkar, M.A. Segura Delgado
Universidad de Antioquia, Medellin, Colombia
J. Jaramillo, 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
University of Split, Faculty of Science, Split, Croatia
Z. Antunovic, M. Kovac, T. Sculac
Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, D. Ferencek, D. Majumder, 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,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
S. Abu Zeid , Y. Assran , E. Salama Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
A. Lotfy, M.A. Mahmoud
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. 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
C. Amendola, 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, 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, Palaiseau, France
S. Ahuja, F. Beaudette, M. Bonanomi, A. Buchot Perraguin, P. Busson, C. Charlot, O. Davignon,B. Diab, G. Falmagne, R. Granier de Cassagnac, A. Hakimi, 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, 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, K. Shchablo, L. Torterotot, G. Touquet,M. Vander Donckt, S. Viret
Georgian Technical University, Tbilisi, Georgia
G. Adamov, 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, G. Mocellin, S. Mondal, S. Mukherjee, D. Noll, A. Novak, T. Pook, A. Pozdnyakov, 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, L.I. Estevez Banos,E. Gallo , A. Geiser, A. Giraldi, A. Grohsjean, M. Guthoff, A. Harb, A. Jafari , N.Z. Jomhari,H. Jung, A. Kasem , M. Kasemann, H. Kaveh, C. Kleinwort, J. Knolle, D. Kr ¨ucker, W. Lange,T. Lenz, J. Lidrych, K. Lipka, W. Lohmann , T. Madlener, 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. Saggio, A. Saibel, M. Savitskyi,V. Scheurer, C. Schwanenberger, A. Singh, R.E. Sosa Ricardo, 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, M. Eich, F. Feindt,A. Fr ¨ohlich, C. Garbers, E. Garutti, P. Gunnellini, J. Haller, A. Hinzmann, A. Karavdina,G. Kasieczka, R. Klanner, R. Kogler, V. Kutzner, J. Lange, T. Lange, A. Malara, C.E.N. Niemeyer,A. Nigamova, K.J. Pena Rodriguez, 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
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, I. Katkov , P. Keicher, R. Koppenh ¨ofer, S. Maier, M. Metzler, S. Mitra,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, 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,E. Tziaferi, 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, K. Manitara, N. Manthos,I. Papadopoulos, J. Strologas MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´and University,Budapest, Hungary
M. Bart ´ok , M. Csanad, M.M.A. Gadallah , S. L ¨ok ¨os , 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
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 , 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, G. Chaudhary, S. Chauhan, N. Dhingra , R. Gupta, A. Kaur,S. Kaur, P. Kumari, 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 , S. Nandan, P. Palit, P.K. Rout, G. Saha, B. Sahu, 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. Kumar, 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, G.B. Mohanty, U. Sarkar
Tata Institute of Fundamental Research-B, Mumbai, India
S. Banerjee, S. Bhattacharya, S. Chatterjee, R. Chudasama, M. Guchait, S. Karmakar, S. Kumar,G. Majumder, K. Mazumdar, S. Mukherjee, D. Roy
Indian Institute of Science Education and Research (IISER), Pune, India
S. Dube, B. Kansal, S. Pandey, A. Rane, A. Rastogi, S. Sharma
Department of Physics, Isfahan University of Technology, Isfahan, Iran
H. Bakhshiansohi , M. Zeinali Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
S. Chenarani , S.M. Etesami, M. Khakzad, M. Mohammadi Najafabadi 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 ,42 , C. Aruta 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 ,M. Gul a , G. Iaselli a , c , M. Ince a , b , S. Lezki a , b , G. Maggi a , c , M. Maggi a , I. Margjeka a , b ,V. Mastrapasqua 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 , 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 ,L. Giommi a , b , C. Grandi a , L. Guiducci a , b , F. Iemmi a , b , S. Lo Meo a ,43 , 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 ,44 , S. Costa a , b ,44 , A. Di Mattia a , R. Potenza a , b , A. Tricomi a , b ,44 , 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 ,20 , 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 , A. Massironi 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 ,20 , 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. Lista a , b ,S. Meola a , d ,20 , P. Paolucci a ,20 , 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 , P. Bortignon a , A. Bragagnolo a , b , R. Carlin a , b , P. Checchia a ,P. De Castro Manzano a , T. Dorigo a , F. Gasparini a , b , U. Gasparini a , b , S.Y. Hoh a , b , L. Layer a ,45 ,M. Margoni a , b , A.T. Meneguzzo a , b , M. Presilla a , b , P. Ronchese a , b , R. Rossin a , b , F. Simonetto a , b ,G. Strong a , M. Tosi a , b , H. YARAR a , b , M. Zanetti a , b , P. Zotto a , b , A. Zucchetta a , b , G. Zumerle a , b INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy C. Aime‘ a , b , 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. Piccinelli a , b , 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,Universit`a di Siena d , Siena, 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 , d , 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 , G. Ramirez-Sanchez a , c , 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 , d , 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 , J. Berenguer Antequera 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 , M. Tornago a , b , 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,B.C. Radburn-Smith, 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, 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, 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, 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, Y. Roh, D. Song, 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, Y. Lee, I. Yu
College of Engineering and Technology, American University of the Middle East (AUM),Egaila, Kuwait
Y. Maghrbi
Riga Technical University, Riga, Latvia
V. Veckalns Vilnius University, Vilnius, Lithuania
A. Juodagalvis, A. Rinkevicius, G. Tamulaitis, A. Vaitkevicius
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
G. Ayala, H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-De La Cruz , R. Lopez-Fernandez, C.A. Mondragon Herrera, D.A. Perez Navarro, 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, A. Awais, M.I.M. Awan, 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, K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski, M. Walczak
Laborat ´orio de Instrumenta¸c˜ao e F´ısica Experimental de Part´ıculas, Lisboa, Portugal
M. Araujo, P. Bargassa, D. Bastos, A. Boletti, P. Faccioli, M. Gallinaro, J. Hollar, N. Leonardo,T. Niknejad, J. Seixas, K. Shchelina, O. Toldaiev, J. Varela
Joint Institute for Nuclear Research, Dubna, Russia
S. Afanasiev, P. Bunin, M. Gavrilenko, I. Golutvin, A. Kamenev, V. Karjavine, I. Kashunin,V. Korenkov, A. Lanev, A. Malakhov, V. Matveev , V.V. Mitsyn, V. Palichik, V. Perelygin,M. Savina, V. Shalaev, S. Shmatov, S. Shulha, V. Smirnov, O. Teryaev, V. Trofimov, A. Zarubin
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, 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, D. Philippov, E. Popova, V. Rusinov, E. Zhemchugov 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, V. Bunichev, M. Dubinin , L. Dudko, A. Ershov, V. Klyukhin, O. Kodolova,I. Lokhtin, S. Obraztsov, M. Perfilov, S. Petrushanko, V. Savrin 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, L. Sukhikh
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 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, 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, J. Le ´on Holgado, 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, L. Urda G ´omez, 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. Gonza-lez Caballero, E. Palencia Cortezon, C. Ram ´on ´Alvarez, J. Ripoll Sau, V. Rodr´ıguez Bouza,S. Sanchez Cruz, A. Trapote
Instituto de F´ısica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
J.A. Brochero Cifuentes, 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. Martinez Ruiz del Arbol, F. Matorras, J. Piedra Gomez, C. Prieels, F. Ricci-Tam, T. Rodrigo,A. Ruiz-Jimeno, 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, E. Auffray, G. Auzinger, J. Baechler, P. Baillon, A.H. Ball,D. Barney, J. Bendavid, N. Beni, M. Bianco, A. Bocci, E. Bossini, E. Brondolin, T. Camporesi,M. Capeans Garrido, 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, A. Florent,G. Franzoni, J. Fulcher, W. Funk, S. Giani, D. Gigi, K. Gill, F. Glege, L. Gouskos, M. Guilbaud,D. Gulhan, M. Haranko, J. Hegeman, Y. Iiyama, V. Innocente, T. James, P. Janot, J. Kaspar,J. Kieseler, M. Komm, N. Kratochwil, C. Lange, S. Laurila, P. Lecoq, K. Long, C. Lourenc¸o,L. Malgeri, S. Mallios, M. Mannelli, F. Meijers, S. Mersi, E. Meschi, F. Moortgat, M. Mulders,S. Orfanelli, L. Orsini, F. Pantaleo , L. Pape, E. Perez, M. Peruzzi, A. Petrilli, G. Petrucciani,A. Pfeiffer, M. Pierini, T. Quast, 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 , 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, A. De Cosa, 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, F. Nessi-Tedaldi, J. Niedziela, F. Pauss,V. Perovic, G. Perrin, S. Pigazzini, M.G. Ratti, M. Reichmann, C. Reissel, T. Reitenspiess,B. Ristic, D. Ruini, D.A. Sanz Becerra, M. Sch ¨onenberger, V. Stampf, J. Steggemann ,M.L. Vesterbacka Olsson, R. Wallny, D.H. Zhu Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , P. B¨artschi, C. Botta, D. Brzhechko, M.F. Canelli, 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, A. Reimers, P. Robmann, K. Schweiger, Y. Takahashi 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
M.N. Bakirci , F. Boran, S. Damarseckin , Z.S. Demiroglu, F. Dolek, C. Dozen ,I. Dumanoglu , E. Eskut, Y. Guler, E. Gurpinar Guler , I. Hos , C. Isik, E.E. Kangal , O. Kara,A. Kayis Topaksu, U. Kiminsu, G. Onengut, A. Polatoz, A.E. Simsek, B. Tali , U.G. Tok,H. Topakli , 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
B. Akgun, 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, 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,N. Stylianou , 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, G. Fedi, G. Hall, G. Iles,J. Langford, L. Lyons, A.-M. Magnan, S. Malik, A. Martelli, V. Milosevic, 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 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
S. Abdullin, A. Brinkerhoff, K. Call, B. Caraway, J. Dittmann, K. Hatakeyama, A.R. Kanuganti,C. Madrid, B. McMaster, N. Pastika, S. Sawant, C. Smith, J. Wilson
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, C.U. Perez, P. Rumerio, C. West
Boston University, Boston, USA
A. Akpinar, A. Albert, D. Arcaro, C. Cosby, Z. Demiragli, D. Gastler, 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, R. Cousins, A. Dasgupta, D. Hamilton, J. Hauser, M. Ignatenko, M.A. Iqbal, 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, 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, J. Duarte, R. Gerosa, D. Gilbert,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, 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
A. Bornheim, O. Cerri, I. Dutta, J.M. Lawhorn, N. Lu, J. Mao, H.B. Newman, J. Ngadiuba,T.Q. Nguyen, J. Pata, M. Spiropulu, J.R. Vlimant, C. Wang, 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
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
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, P. Klabbers, T. Klijnsma,B. Klima, M.J. Kortelainen, S. Lammel, 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, 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. Sturdy, J. Wang, S. Wang, X. Zuo
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, X. Wang, Z. Wu, Z. Ye
The University of Iowa, Iowa City, USA
M. Alhusseini, 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 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, 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, 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, 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,C. Joo, I. Kravchenko, J.E. Siado, G.R. Snow † , W. Tabb, F. Yan State University of New York at Buffalo, Buffalo, USA
G. Agarwal, H. Bandyopadhyay, C. Harrington, L. Hay, I. Iashvili, A. Kharchilava, C. McLean,D. Nguyen, J. Pekkanen, S. Rappoccio, B. Roozbahani
Northeastern University, Boston, USA
G. Alverson, E. Barberis, C. Freer, Y. Haddad, A. Hortiangtham, J. Li, G. Madigan, B. Marzocchi,D.M. Morse, V. Nguyen, T. Orimoto, A. Parker, 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, 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, A. Lefeld, B.L. Winer,B.R. Yates Princeton University, Princeton, USA
B. Bonham, P. Das, 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, G. Negro, N. Neumeister,C.C. Peng, S. Piperov, A. Purohit, H. Qiu, J.F. Schulte, M. Stojanovic , N. Trevisani, F. Wang,A. Wildridge, R. Xiao, W. Xie Purdue University Northwest, Hammond, USA
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 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, H. Wang 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, 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
University of Virginia, Charlottesville, USA
M.W. Arenton, B. Cox, G. Cummings, J. Hakala, R. Hirosky, M. Joyce, A. Ledovskoy, A. Li,C. Neu, B. Tannenwald, Y. Wang, E. Wolfe, F. Xia
Wayne State University, Detroit, USA
P.E. Karchin, N. Poudyal, P. Thapa
University of Wisconsin - Madison, Madison, WI, USA
K. Black, T. Bose, J. Buchanan, C. Caillol, S. Dasu, I. De Bruyn, P. Everaerts, C. Galloni,H. He, M. Herndon, A. Herv´e, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless,J. Madhusudanan Sreekala, A. Mallampalli, D. Pinna, 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 Institute of Basic and Applied Sciences, Faculty of Engineering, Arab Academy forScience, Technology and Maritime Transport, Alexandria, Egypt, 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 Nanjing Normal University Department of Physics, Nanjing, China10: Now at The University of Iowa, Iowa City, USA11: Also at University of Chinese Academy of Sciences, Beijing, China12: Also at Institute for Theoretical and Experimental Physics named by A.I. Alikhanov ofNRC ‘Kurchatov Institute’, Moscow, Russia13: Also at Joint Institute for Nuclear Research, Dubna, Russia14: Also at Ain Shams University, Cairo, Egypt15: Also at Suez University, Suez, Egypt16: Now at British University in Egypt, Cairo, Egypt17: Also at Purdue University, West Lafayette, USA18: Also at Universit´e de Haute Alsace, Mulhouse, France19: Also at Erzincan Binali Yildirim University, Erzincan, Turkey20: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland21: Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany22: Also at University of Hamburg, Hamburg, Germany23: Also at Department of Physics, Isfahan University of Technology, Isfahan, Iran, Isfahan,Iran24: Also at Brandenburg University of Technology, Cottbus, Germany25: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University,Moscow, Russia26: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary, Debrecen,Hungary27: Also at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt28: Also at Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary29: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary30: Also at MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´andUniversity, Budapest, Hungary, Budapest, Hungary31: Also at Wigner Research Centre for Physics, Budapest, Hungary32: Also at IIT Bhubaneswar, Bhubaneswar, India, Bhubaneswar, India33: Also at Institute of Physics, Bhubaneswar, India34: Also at G.H.G. Khalsa College, Punjab, India35: Also at Shoolini University, Solan, India36: Also at University of Hyderabad, Hyderabad, India37: Also at University of Visva-Bharati, Santiniketan, India38: Also at Indian Institute of Technology (IIT), Mumbai, India39: Also at Deutsches Elektronen-Synchrotron, Hamburg, Germany40: Also at Sharif University of Technology, Tehran, Iran41: Also at Department of Physics, University of Science and Technology of Mazandaran,Behshahr, Iran
42: Now at INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy43: Also at Italian National Agency for New Technologies, Energy and Sustainable EconomicDevelopment, Bologna, Italy44: Also at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy45: Also at Universit`a di Napoli ’Federico II’, NAPOLI, Italy46: Also at Riga Technical University, Riga, Latvia, Riga, Latvia47: Also at Consejo Nacional de Ciencia y Tecnolog´ıa, Mexico City, Mexico48: Also at Institute for Nuclear Research, Moscow, Russia49: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’(MEPhI), Moscow, Russia50: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia51: Also at University of Florida, Gainesville, USA52: Also at Imperial College, London, United Kingdom53: Also at P.N. Lebedev Physical Institute, Moscow, Russia54: Also at California Institute of Technology, Pasadena, USA55: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia56: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia57: Also at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka58: Also at INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy, Pavia, Italy59: Also at National and Kapodistrian University of Athens, Athens, Greece60: Also at Universit¨at Z ¨urich, Zurich, Switzerland61: Also at Ecole Polytechnique F´ed´erale Lausanne, Lausanne, Switzerland62: Also at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria, Vienna, Austria63: Also at Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France64: Also at Gaziosmanpasa University, Tokat, Turkey65: Also at S¸ ırnak University, Sirnak, Turkey66: Also at Department of Physics, Tsinghua University, Beijing, China, Beijing, China67: Also at Near East University, Research Center of Experimental Health Science, Nicosia,Turkey68: Also at Beykent University, Istanbul, Turkey, Istanbul, Turkey69: Also at Istanbul Aydin University, Application and Research Center for Advanced Studies(App. & Res. Cent. for Advanced Studies), Istanbul, Turkey70: Also at Mersin University, Mersin, Turkey71: Also at Adiyaman University, Adiyaman, Turkey72: Also at Tarsus University, MERSIN, Turkey73: Also at Ozyegin University, Istanbul, Turkey74: Also at Izmir Institute of Technology, Izmir, Turkey75: Also at Necmettin Erbakan University, Konya, Turkey76: Also at Bozok Universitetesi Rekt ¨orl ¨ug ¨u, Yozgat, Turkey, Yozgat, Turkey77: Also at Marmara University, Istanbul, Turkey78: Also at Milli Savunma University, Istanbul, Turkey79: Also at Kafkas University, Kars, Turkey80: Also at Istanbul Bilgi University, Istanbul, Turkey81: Also at Hacettepe University, Ankara, Turkey82: Also at Vrije Universiteit Brussel, Brussel, Belgium83: Also at School of Physics and Astronomy, University of Southampton, Southampton,United Kingdom84: Also at IPPP Durham University, Durham, United Kingdom0