Observation of a new excited beauty strange baryon decaying to Ξ^-_\mathrm{b} π^+ π^-
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-EP-2021-0202021/02/10
CMS-BPH-20-004
Observation of a new excited beauty strange baryondecaying to Ξ − b π + π − The CMS Collaboration * Abstract
The Ξ − b π + π − invariant mass spectrum is investigated with an event sample ofproton-proton collisions at √ s =
13 TeV, collected by the CMS experiment at theLHC in 2016–2018 and corresponding to an integrated luminosity of 140 fb − . Theground state Ξ − b is reconstructed via its decays to J/ ψ Ξ − and J/ ψ Λ K − . A nar-row resonance, labeled Ξ b ( ) − , is observed at a Ξ − b π + π − invariant mass of6100.3 ± ± ± ( Ξ − b ) MeV, where the last uncertainty reflects theprecision of the Ξ − b baryon mass. The upper limit on the Ξ b ( ) − natural width isdetermined to be 1.9 MeV at 95% confidence level. Following analogies with the estab-lished excited Ξ c baryon states, the new Ξ b ( ) − resonance and its decay sequenceare consistent with the orbitally excited Ξ − b baryon, with spin and parity quantumnumbers J P = − . Submitted to Physical Review Letters © 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 Ξ b baryon family consists of isodoublet states composed of bsq quarks, where q representsan up or a down quark for the Ξ and Ξ − b states, respectively. According to the quark model [1],three such isodoublets that are neither orbitally nor radially excited should exist, including onewith the light diquark spin j qs = J P = + (the Ξ b ground states), onewith j qs = J P = + (the Ξ (cid:48) b ), and one with j qs = J P = + (the Ξ ∗ b ). Varioustheoretical models and calculations predict a spectrum of excited Ξ b baryons [2–16]. Three ofthe four excited states with j qs = Ξ − b π + and Ξ π − decays, in agreement with predictions [2–4]. The fourth state, Ξ (cid:48) , is expectedto be lighter than the Ξ − b π + mass threshold, making a strong transition to Ξ − b kinematicallyimpossible. The next prominent isodoublets, in analogy with the quark model assumptionsfor the well-established excited Ξ c baryons [20], are orbitally excited P -wave Ξ ∗∗ b states with J P = − (3/2 − ), expected to decay to Ξ (cid:48) b ( Ξ ∗ b ) π [12, 13, 21]. Recently, the LHCb Collaborationreported the observation of the Ξ b ( ) − [22] and Ξ b ( ) [23] states, the former decayingto both Λ K − and Ξ π − , and the latter to Ξ − b π + .This Letter presents a search for Ξ − b excited states in the Ξ − b π + π − invariant mass spectrum, per-formed using proton-proton (pp) collision data samples collected by the CMS experiment at theLHC at √ s =
13 TeV in 2016–2018, corresponding to an integrated luminosity of 140 fb − . Theground state Ξ − b is reconstructed via its decays to J/ ψ Ξ − and J/ ψ Λ K − , followed by the decaysJ/ ψ → µ + µ − , Ξ − → Λ π − , and Λ → p π − . For the Ξ − b → J/ ψ Λ K − decay mode, following thestudies reported by the LHCb Collaboration [24], the partially reconstructed Ξ − b → J/ ψ Σ K − channel is also used, where the photon from the Σ → Λ γ decay is too soft to be detected. Theinclusion of charge-conjugated states is implied throughout this Letter. A signal peak, hereafterreferred to as Ξ b ( ) − , is clearly observed near the Ξ − b π + π − kinematic threshold, with a de-cay sequence consistent with being the Ξ b ( ) − → Ξ ∗ π − → Ξ − b π + π − decay. The Ξ b ( ) − mass and an upper limit on its width are also measured.The central feature of the CMS apparatus is a superconducting solenoid of 6 m internal diam-eter, providing a magnetic field of 3.8 T. Within the solenoid volume are a silicon pixel andstrip tracker, a lead tungstate crystal electromagnetic calorimeter, and a brass and scintillatorhadron calorimeter, each composed of a barrel and two endcap sections. Muons are detected ingas-ionization chambers embedded in the steel flux-return yoke outside the solenoid. A moredetailed description of the CMS detector, together with a definition of the coordinate systemused and the relevant kinematic variables, can be found in Ref. [25].Events of interest are selected using a two-tiered trigger system. The first level (L1), com-posed of custom hardware processors, uses information from the calorimeters and muon de-tectors [26]. The second level, known as the high-level trigger (HLT), consists of a farm ofprocessors running a version of the full event reconstruction software optimized for fast pro-cessing [27]. The events used in the analysis were selected at L1 by requiring the presence ofat least two muons, and at HLT by requiring that the two muons have opposite sign (OS), withvarious thresholds on the pseudorapidity η and transverse momentum p T , compatible withbeing produced in the dimuon decay of J/ ψ mesons.Several simulated event samples are used in the analysis. The PYTHIA Ξ b ( ) − state, where the Σ − b baryon, with a modifiedmass value, is used as a proxy for an excited Ξ b ( ) − state. The Ξ b ( ) − → Ξ − b π + π − (in-cluding both resonant Ξ ∗ π + → Ξ − b π + π − and non-resonant Ξ − b π + π − modes), Ξ − b → J/ ψ Ξ − , Ξ − b → J/ ψ Λ K − (including Ξ − b → J/ ψ Σ K − , Σ → Λ γ ), and J/ ψ → µ + µ − decays are mod-eled with EVTGEN
PHOTOS
EANT of the CMS detector, including the same trigger and reconstruction algorithms as used for thecollision data. The simulation includes effects from multiple pp interactions in the same ornearby bunch crossings (pileup) with a multiplicity distribution matching the measured one.The selection criteria are optimized using the Punzi figure of merit [33], which does not rely onthe signal normalization. The expected background is estimated from data using the same-sign(SS) control region described below, while the signal efficiency is obtained from the simulated Ξ b ( ) − → Ξ − b π + π − events. The Ξ − b → J/ ψ Ξ − and Ξ − b → J/ ψ Λ K − requirements are opti-mized separately.Events are required to have two OS muons passing the CMS soft-muon selection criteria [34]and satisfying p T ( µ ± ) > | η ( µ ± ) | < χ probability P vtx above 1%. The dimuon invariant mass must be within 100 MeV of m PDGJ/ ψ (hereafter, m PDG X denotes the world-average mass of hadron X [20]), corresponding toabout three times the mass resolution. The Λ candidates are formed from displaced two-prongvertices, assuming the decay Λ → p π − , as described in Ref. [35]. The p π − reconstructedmass is required to be within 10 MeV of m PDG Λ , corresponding to about three times the massresolution. The two tracks are then refitted with their invariant mass constrained to m PDG Λ . Theobtained Λ candidates are required to have p T > P vtx > Ξ − b → J/ ψ Ξ − channel, the Ξ − → Λ π − candidates are obtained by combining chargedparticles of p T > Λ candidates. The Λ π − P vtx must exceed 1%,and the reconstructed Ξ − must have p T > m PDG Ξ − ,corresponding to about three times the mass resolution. The Ξ − b candidates are obtained byperforming a µ + µ − Ξ − kinematic vertex fit, constraining the dimuon invariant mass to m PDGJ/ ψ .For the Ξ − b → J/ ψ Λ K − decay channel, the Λ candidates must pass stricter requirements: p T > | M ( p π − ) − m PDG Λ | < p T > Ξ − b candidates are reconstructed by fitting the µ + µ − Λ K − vertex with the J/ ψ mass con-straint. Since the photon from the Σ → Λ γ decay is not detected, both Ξ − b → J/ ψ Λ K − and Ξ − b → J/ ψ Σ K − decays contribute to the µ + µ − Λ K − reconstructed combination.The Ξ − b candidates are required to have P vtx >
1% and p T > ( ) GeV for the Ξ − b → J/ ψ Ξ − ( Ξ − b → J/ ψ Λ K − ) channel. From all reconstructed pp collision vertices, the primary vertex (PV)is chosen as the one with the smallest pointing angle, as done in Refs. [37–40]. The point-ing angle is the three-dimensional angle between the Ξ − b candidate momentum and the vec-tor joining the PV with the reconstructed Ξ − b candidate decay vertex. The decay length L xy of the Ξ − b candidate in the transverse plane, computed as the two-dimensional distance be-tween the PV and the Ξ − b decay vertex, is required to be at least three times larger than itsuncertainty σ L xy . The (cid:126) p T ( Ξ − b ) is required to be aligned with the transverse displacement vector:cos ( α ( Ξ − b , PV )) > ( ) for the Ξ − b → J/ ψ Ξ − ( Ξ − b → J/ ψ Λ K − ) channel, where α ( Ξ − b , PV ) is the pointing angle in the plane transverse to the beams. Two additional topological require-ments are applied: the cosine of the pointing angle, cos ( α ( Ξ − , Ξ − b )) , must be larger than 0.999for the Ξ − b → J/ ψ Ξ − channel; and L xy / σ L xy ( Λ , Ξ − b ) >
20 for the Ξ − b → J/ ψ Λ K − channel. Be-sides, the pion emitted in the Ξ − → Λ π − decay and the kaon emitted in the Ξ − b → J/ ψ Λ K − decay must have d xy / σ d xy > d xy is the impact parameter in thetransverse plane with respect to the PV, and σ d xy is its uncertainty.The invariant mass distributions of the selected Ξ − b candidates are shown in Fig. 1 for the J/ ψ Ξ − (left) and J/ ψ Λ K − (right) channels. The two plots also show the results of independent un-binned extended maximum-likelihood fits. In both cases, the fully reconstructed Ξ − b signal isdescribed by a double-Gaussian function with two free parameters: the common mean andthe total yield; the two width parameters and the proportion of each Gaussian are fixed fromsimulation studies. The background is described by a first-order polynomial in the J/ ψ Ξ − fitand an exponential function in the J/ ψ Λ K − fit. In the latter fit, the signal contribution fromthe partially reconstructed Ξ − b → J/ ψ Σ K − decays is taken into account by including an asym-metric Gaussian in the fit model, with the shape parameters fixed from simulation studies. Allnormalization values (signals and backgrounds) are free parameters of the fit.The signal yields from the fits described above are 859 ±
36 and 815 ±
74 for the Ξ − b → J/ ψ Ξ − and fully reconstructed Ξ − b → J/ ψ Λ K − decay modes, respectively, with the uncertainties beingstatistical only. The fitted Ξ − b masses are consistent with each other and with the world-averagevalue, 5797.0 ± Ξ − b candidates are shown by the solid green curves. The fitted yield of the partially reconstructed Ξ − b → J/ ψ Σ K − contribution, reconstructed as J/ ψ Λ K − , is 820 ± Ξ − b fit results illustrate this part of the reconstruction proce-dure and provide the first confirmation of the Ξ − b → J/ ψ Λ K − decay observed by LHCb [24]. ) [GeV] - Xy (J/ M C and i da t e s / M e V DataFitSignalComb. bkg. (13 TeV) -1
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Figure 1: Invariant mass distributions of the selected Ξ − b candidates in the J/ ψ Ξ − (left) andJ/ ψ Λ K − (right) decay channels with the fit results superimposed. The vertical solid (dashed)lines show the mass windows discussed in the text and used in the reconstruction of the Ξ − b π + π − candidates in J/ ψ Ξ − and J/ ψ Λ K − (J/ ψ Σ K − ) channels.When reconstructing Ξ − b π + π − candidates, we select events with Ξ − b invariant mass within 54(27) MeV of the fitted Ξ − b mass for the J/ ψ Ξ − (J/ ψ Λ K − ) channel, corresponding to approxi-mately 2.8 (1.8) times the mass resolution, as shown by the vertical solid lines in Fig. 1. The5.63 < M ( J/ ψ Λ K − ) < Ξ − b → J/ ψ Σ K − decay mode, shown by the dashed vertical lines in Fig. 1 (right). These mass rangesare selected through the same optimization procedure as used for the other selection criteria.Since the lifetime of the excited Ξ b states is expected to be negligible, the Ξ − b π + π − candidatesare formed by combining the selected Ξ − b candidates with two OS tracks originating from thePV, as in Refs. [37–40]. Combinations of a Ξ − b candidate with two SS pions from the PV areused as a control channel and form the SS control region. The analysis is performed usingthe mass difference variable ∆ M = M ( Ξ − b π + π − ) − M ( Ξ − b ) − m PDG π ± , which has a better massresolution than M ( Ξ − b π + π − ) , where M ( Ξ − b ) represents the reconstructed Ξ − b mass. Accordingto the simulation studies, this variable also has the advantage of being insensitive to a potentialmass shift caused by the fact that the photon emitted in the Ξ − b → J/ ψ Σ K − , Σ → Λ γ decay sequence is not reconstructed. Following the technique developed in Ref. [40], the selected Ξ − b candidate and all tracks forming the PV are refit to a common vertex, further improvingthe Ξ − b π + π − invariant mass resolution of the fully reconstructed channels from 1.39 ± ± Ξ ∗∗− b → Ξ − b π + π − should proceed predominantly through Ξ ∗∗− b → Ξ ∗ π − , fol-lowed by Ξ ∗ → Ξ − b π + . Therefore, an additional requirement is applied to enhance this contri-bution. As the Ξ ∗ state has a mass of 5952.3 ± M ( Ξ ∗ ) − M ( Ξ − b ) − m PDG π + will peak at 15.73 MeV [20]. To avoid complications in understanding the Ξ − b π + π − threshold, we do not apply a minimum cut on this mass difference but simply require it tobe less than 20.73 MeV, with the 5 MeV addition found to be optimal when considering the Ξ ∗ natural width and our detector resolution.The invariant mass distribution of the selected Ξ − b π + π − candidates is shown in Fig. 2, usingthe mass difference variable ∆ M . The left plot combines the data from the Ξ − b → J/ ψ Ξ − and Ξ − b → J/ ψ Λ K − channels, which have identical mass resolutions, according to simulation stud-ies (the Ξ − b is fully reconstructed in both channels). The right plot shows the events that use thepartially reconstructed Ξ − b → J/ ψ Σ K − channel, with a 30% larger mass resolution. Given thedefinition of the ∆ M variable, the mean mass of the signal peaks should not depend on the Ξ − b reconstruction channel.
0 20 40 60 80 100 [MeV] ± π PDG m − ) − b Ξ ( M − ) − π + π − b Ξ ( M C and i da t e s / M e V Data Fit Signal Comb. bkg. (13 TeV) -1
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CMS − Ξ , ψ J/ → − b Ξ − K Λψ J/ → − b Ξ [MeV] ± π PDG m − ) − b Ξ ( M − ) − π + π − b Ξ ( M C and i da t e s / M e V Data Fit Signal Comb. bkg. (13 TeV) -1
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CMS − K Σψ J/ → − b Ξ
0 20 40 60 80 100
Figure 2: Distributions of the invariant mass difference ∆ M for the selected Ξ − b π + π − candi-dates, with the Ξ − b reconstructed in the J/ ψ Ξ − and J/ ψ Λ K − channels (left) or partially recon-structed in the J/ ψ Σ K − channel (right). The result of the simultaneous fit is also shown.A narrow peak is seen near the threshold of the Ξ − b π + π − system in both plots of Fig. 2. Theexcess is also visible in each of the two independent decay channels, J/ ψ Ξ − and J/ ψ Λ K − . Wehave also studied the OS and SS distributions in a wider range of ∆ M (up to 280 MeV) andfound no other significant peaks. A simultaneous unbinned extended maximum-likelihood fitis performed on the two data samples shown in Fig. 2, the result being represented by the redcurves. The signal component is described with a relativistic Breit–Wigner (RBW) function [42,43] for the Ξ b ( ) − → Ξ ∗ π − decay, convolved with a double-Gaussian resolution function.The mass and natural width of the signal function are the two parameters of interest in thefit. The normalization and background parameters are different for the fully and partiallyreconstructed channels, as are the resolution parameters, which are fixed from the simulationstudies. The background component is modeled with the threshold function ( ∆ M ) α , where α is a free parameter. The fitted mass difference of the new Ξ b ( ) − state is ∆ M Ξ b ( ) − = ± ± ± Ξ − b → J/ ψ Σ K − channels, respectively. The natural width of the Ξ b ( ) − is too small to be measured with the present data sample and experimental resolution. Anupper limit on Γ ( Ξ b ( ) − ) has been obtained through a scan of the profiled likelihood, as-suming an asymptotic distribution. The measured upper limit, at 95% confidence level, is Γ ( Ξ b ( ) − ) < Ξ b ( ) − signal is evaluated with the likelihood ra-tio technique, comparing the background-only and signal-plus-background hypotheses (withfour additional free parameters), using asymptotic formulas [44, 45]. The resulting significanceof the Ξ b ( ) − signal varies between 6.2 and 6.7 standard deviations, depending on the fitmodel variations used to evaluate the systematic uncertainties.Several sources of systematic uncertainties in the measured mass difference ∆ M Ξ b ( ) − areconsidered. To evaluate the systematic uncertainties related to the choice of the fit model,several alternative functions are tested. Uncertainties related to the choice of the signal modelare estimated by changing the resolution function from a double-Gaussian function to a singleGaussian function or a sum of three Gaussian functions. Two alternative background modelsare considered: the threshold function multiplied by an exponential and the threshold functionmultiplied by a first-order polynomial. The largest deviations in the measured mass are 0.01and 0.04 MeV, respectively, for the variations of the signal and background models; these valuesare taken as the two corresponding systematic uncertainties.The RBW function used in the signal modeling includes Blatt–Weisskopf barrier factors [43],which depend on the radial parameter r and on the angular momentum l (spin). In the baselinefit, r = − and l =
1. The corresponding systematic uncertainties are obtained byvarying r between 1 and 5 GeV − or by assigning l =
0. The r variations have a negligibleeffect on the results, while fixing l = Ξ − b resolutions in data and simulation. The resulting systematic uncertaintyof the Ξ b ( ) − mass difference is 0.02 MeV.The systematic uncertainty reflecting the ∆ M fit range is evaluated by changing the upperend of the ∆ M fit range from its default 100 MeV to 80, 120, and 150 MeV. The largest massdifference change of 0.02 MeV is taken as the corresponding systematic uncertainty.A potential bias due to a possible misalignment of the tracker detectors is evaluated by com-paring the results obtained with the data collected in 2016, 2017, and 2018. This is a reasonableevaluation, given that the inner part of the CMS tracker was replaced between the 2016 and2017 data-taking periods. The measured mass is found to be insensitive to alignment uncer-tainties.The total systematic uncertainty in the measured mass difference ∆ M Ξ b ( ) − , calculated as thesum in quadrature of the partial terms, is 0.05 MeV.In summary, we report the observation of a new excited beauty strange baryon, decaying to Ξ − b π + π − . The analysis uses proton-proton collision data collected by the CMS experiment at √ s =
13 TeV, corresponding to an integrated luminosity of 140 fb − . The measured mass dif- ference of this state is M ( Ξ b ( ) − ) − M ( Ξ − b ) − m PDG π ± = ± ± Ξ − b mass of 5797.0 ± M ( Ξ b ( ) − ) = ± ± ± ( Ξ − b ) MeV. It is particularly remarkable that if the Ξ b ( ) − baryonwere only 13 MeV heavier, it would be above the Λ K − mass threshold and could decay to thisfinal state. The natural width of this resonance is compatible with zero and a 95% confidencelevel upper limit of 1.9 MeV has been determined.Following analogies with the established excited Ξ c baryon states [20], and considering severaltheoretical predictions [12, 13, 21], the new Ξ b ( ) − resonance and its decay sequence areconsistent with the orbitally excited Ξ − b baryon, with the light diquark spin j qs = J P = − . This suggests that it is the beauty analogue of the Ξ c ( ) baryon [41]. The observationof this baryon and the measurement of its properties provide information that should help todistinguish between different theoretical models used to calculate the properties of the excited Ξ b states. Acknowledgments
We congratulate our colleagues in the CERN accelerator departments for the excellent perfor-mance of the LHC and thank the technical and administrative staffs at CERN and at other CMSinstitutes for their contributions to the success of the CMS effort. In addition, we gratefullyacknowledge the computing centers and personnel of the Worldwide LHC Computing Gridand other centers 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,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 vonHumboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation`a la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voorInnovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO(Belgium) under the “Excellence of Science – EOS” – be.h project n. 30820817; the BeijingMunicipal Science & Technology Commission, No. Z191100007219010; the Ministry ofEducation, Youth and Sports (MEYS) of the Czech Republic; the DeutscheForschungsgemeinschaft (DFG), under Germany’s Excellence Strategy – EXC 2121 “QuantumUniverse” – 390833306, and under project number 400140256 - GRK2497; the Lend ¨ulet(“Momentum”) Program and the J´anos Bolyai Research Scholarship of the Hungarian eferences Academy of Sciences, the New National Excellence Program ´UNKP, the NKFIA researchgrants 123842, 123959, 124845, 124850, 125105, 128713, 128786, and 129058 (Hungary); theCouncil of Science and Industrial Research, India; the HOMING PLUS program of theFoundation for Polish Science, cofinanced from European Union, Regional DevelopmentFund, the Mobility Plus program of the Ministry of Science and Higher Education, theNational Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus2014/13/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. 14.W03.31.0026 (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; theRachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and theChulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); theKavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the WelchFoundation, 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, J.W. Andrejkovic, T. Bergauer, S. Chatterjee, M. Dragicevic, A. Escalante Del Valle,R. Fr ¨uhwirth , M. Jeitler , N. Krammer, L. Lechner, D. Liko, I. Mikulec, F.M. Pitters, J. Schieck ,R. Sch ¨ofbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz Institute for Nuclear Problems, Minsk, Belarus
V. Chekhovsky, A. Litomin, V. Makarenko
Universiteit Antwerpen, Antwerpen, Belgium
M.R. Darwish , E.A. De Wolf, X. Janssen, T. Kello , A. Lelek, H. Rejeb Sfar, P. Van Mechelen,S. Van Putte, N. Van Remortel Vrije Universiteit Brussel, Brussel, Belgium
F. Blekman, E.S. Bols, J. D’Hondt, J. De Clercq, M. Delcourt, S. Lowette, S. Moortgat, A. Morton,D. M ¨uller, A.R. Sahasransu, S. Tavernier, W. Van Doninck, P. Van Mulders
Universit´e Libre de Bruxelles, Bruxelles, Belgium
D. Beghin, B. Bilin, B. Clerbaux, G. De Lentdecker, L. Favart, A. Grebenyuk, A.K. Kalsi, K. Lee,M. Mahdavikhorrami, I. Makarenko, L. Moureaux, L. P´etr´e, A. Popov, N. Postiau, E. Starling,L. Thomas, M. Vanden Bemden, C. Vander Velde, P. Vanlaer, D. Vannerom, L. Wezenbeek
Ghent University, Ghent, Belgium
T. Cornelis, D. Dobur, M. Gruchala, L. Lambrecht, G. Mestdach, M. Niedziela, C. Roskas,K. Skovpen, T.T. Tran, M. Tytgat, W. Verbeke, B. Vermassen, M. Vit
Universit´e Catholique de Louvain, Louvain-la-Neuve, Belgium
A. Bethani, G. Bruno, F. Bury, C. Caputo, P. David, C. Delaere, I.S. Donertas, A. Giammanco,K. Jaffel, 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, M. Barroso Ferreira Filho, H. BRANDAO MALBOUISSON, W. Carvalho,J. Chinellato , E.M. Da Costa, G.G. Da Silveira , D. De Jesus Damiao, S. Fonseca De Souza,D. Matos Figueiredo, C. Mora Herrera, K. Mota Amarilo, 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, T. Javaid , M. Mittal, H. Wang, L. Yuan Department of Physics, Tsinghua University, Beijing, China
M. Ahmad, G. Bauer, C. Dozen , Z. Hu, J. Martins , Y. Wang, K. Yi Institute of High Energy Physics, Beijing, China
E. Chapon, G.M. Chen , H.S. Chen , M. Chen, F. Iemmi, 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 , H. Okawa 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
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
Charles University, Prague, Czech Republic
M. Finger , M. Finger Jr. , A. Kveton 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 , S. Khalil , 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, J. Pata,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, M. Lotti, L. Martikainen, H. Siikonen, E. Tuominen,J. Tuominiemi
Lappeenranta University of Technology, Lappeenranta, Finland
P. Luukka, H. Petrow, 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, A. Cappati, C. Charlot,O. Davignon, B. Diab, G. Falmagne, S. Ghosh, R. Granier de Cassagnac, A. Hakimi, I. Kucher,A. Lobanov, 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. Apparu, D. Bloch, G. Bourgatte, J.-M. Brom, E.C. Chabert,C. Collard, D. Darej, J.-C. Fontaine , 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
I. Lomidze, T. Toriashvili , Z. Tsamalaidze RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
L. Feld, K. Klein, M. Lipinski, D. Meuser, A. Pauls, M.P. Rauch, 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, F. Ivone,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, C. Cheng, P. Connor, S. Consuegra Rodr´ıguez, V. Danilov, M.M. Defranchis,L. Didukh, G. Eckerlin, D. Eckstein, L.I. Estevez Banos, O. Filatov, E. Gallo , A. Geiser,A. Giraldi, A. Grohsjean, M. Guthoff, 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, J. Mnich, A. Mussgiller, V. Myronenko, Y. Otarid, D. P´erez Ad´an,D. Pitzl, A. Raspereza, B. Ribeiro Lopes, J. R ¨ubenach, A. Saggio, A. Saibel, M. Savitskyi,V. Scheurer, C. Schwanenberger , A. Singh, R.E. Sosa Ricardo, D. Stafford, N. Tonon, O. Turkot,A. Vagnerini, M. Van De Klundert, R. Walsh, D. Walter, Y. Wen, K. Wichmann, C. Wissing,S. Wuchterl, R. Zlebcik University of Hamburg, Hamburg, Germany
R. Aggleton, S. Bein, L. Benato, A. Benecke, K. De Leo, T. Dreyer, 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, A. Nigamova,K.J. Pena Rodriguez, O. Rieger, P. Schleper, M. Schr ¨oder, J. Schwandt, D. Schwarz, J. Sonneveld,H. Stadie, G. Steinbr ¨uck, A. Tews, 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, J.o. Gosewisch, 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. Neukum, G. Quast, K. Rabbertz, J. Rauser, D. Savoiu, D. Sch¨afer,M. Schnepf, D. Seith, I. Shvetsov, H.J. Simonis, R. Ulrich, J. Van Der Linden, R.F. Von Cube,M. Wassmer, M. Weber, S. Wieland, R. Wolf, S. Wozniewski, S. Wunsch Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi,Greece
G. Anagnostou, P. Asenov, G. Daskalakis, T. Geralis, A. Kyriakis, D. Loukas, 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, 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. Csanad, K. Farkas, M.M.A. Gadallah , S. L ¨ok ¨os , P. Major, K. Mandal, A. Mehta,G. Pasztor, A.J. R´adl, O. Sur´anyi, G.I. Veres Wigner Research Centre for Physics, Budapest, Hungary
M. Bart ´ok , 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 , P. Saha, 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, 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, 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. Jha, V. Kumar, D.K. Mishra, K. Naskar , P.K. Netrakanti, L.M. Pant, P. Shukla Tata Institute of Fundamental Research-A, Mumbai, India
T. Aziz, S. Dugad, M. Kumar, G.B. Mohanty, U. Sarkar
Tata Institute of Fundamental Research-B, Mumbai, India
S. Banerjee, S. Bhattacharya, 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. Pellecchia 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 ,L. Brigliadori a , 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 , P. Giacomelli a ,L. Giommi a , b , C. Grandi a , L. Guiducci a , b , S. Lo Meo a ,43 , L. Lunerti a , b , 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 , b , 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 , 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 , F. Carnevali a , b , N. Cavallo a , c , A. De Iorio a , b , F. Fabozzi a , c , 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 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 G.M. Bilei a , D. Ciangottini a , b , L. Fan `o a , b , P. Lariccia a , b , M. Magherini 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 P. Azzurri a , G. Bagliesi a , V. Bertacchi a , c , L. Bianchini a , T. Boccali a , E. Bossini a , b , R. Castaldi a ,M.A. Ciocci a , b , R. Dell’Orso a , M.R. Di Domenico a , d , S. Donato a , 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 , S. Parolia a , b , 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 M. Campana a , b , 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 , 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 , 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 ,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 , K. Shchelina 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 ,G. Sorrentino a , b , F. Vazzoler a , b Kyungpook National University, Daegu, Korea
S. Dogra, C. Huh, B. Kim, D.H. Kim, G.N. Kim, J. 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
T.J. Kim, J. Park
Korea University, Seoul, Korea
S. Cho, S. Choi, Y. Go, 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, S. Lee, B.H. Oh,M. Oh, S.B. Oh, H. Seo, U.K. Yang, I. Yoon
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. Watson8
D. Jeon, J.H. Kim, B. Ko, J.S.H. Lee, I.C. Park, Y. Roh, D. Song, I.J. Watson8 Yonsei University, Department of Physics, Seoul, Korea
S. Ha, H.D. Yoo
Sungkyunkwan University, Suwon, Korea
Y. Choi, Y. Jeong, H. Lee, Y. Lee, I. Yu
College of Engineering and Technology, American University of the Middle East (AUM),Egaila, Kuwait
T. Beyrouthy, Y. Maghrbi
Riga Technical University, Riga, Latvia
V. Veckalns Vilnius University, Vilnius, Lithuania
M. Ambrozas, A. Juodagalvis, A. Rinkevicius, G. Tamulaitis, A. Vaitkevicius
National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
N. Bin Norjoharuddeen, 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
I. Pedraza, H.A. Salazar Ibarguen, C. Uribe Estrada
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, M. Pisano, J. Seixas, O. Toldaiev, J. Varela
Joint Institute for Nuclear Research, Dubna, Russia
S. Afanasiev, D. Budkouski, P. Bunin, M. Gavrilenko, I. Golutvin, I. Gorbunov, A. Kamenev,V. Karjavine, A. Lanev, A. Malakhov, V. Matveev , V. Palichik, V. Perelygin, M. Savina,D. Seitova, V. Shalaev, S. Shmatov, S. Shulha, V. Smirnov, O. Teryaev, N. Voytishin, A. Zarubin,I. Zhizhin
Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
G. Gavrilov, V. Golovtcov, Y. Ivanov, V. Kim , E. Kuznetsova , V. Murzin, V. Oreshkin,I. Smirnov, D. Sosnov, V. Sulimov, L. Uvarov, S. Volkov, A. Vorobyev Institute for Nuclear Research, Moscow, Russia
Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, A. Karneyeu, M. Kirsanov, N. Krasnikov,A. Pashenkov, G. Pivovarov, D. Tlisov † , A. Toropin Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC‘Kurchatov Institute’, Moscow, Russia
V. Epshteyn, V. Gavrilov, N. Lychkovskaya, A. Nikitenko , V. Popov, G. Safronov,A. Spiridonov, A. Stepennov, M. Toms, E. Vlasov, A. Zhokin Moscow Institute of Physics and Technology, Moscow, Russia
T. Aushev, K. Ivanov
National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI),Moscow, Russia
R. Chistov , M. Danilov , A. Oskin, P. Parygin, S. Polikarpov P.N. Lebedev Physical Institute, Moscow, Russia
V. Andreev, M. Azarkin, I. Dremin, M. Kirakosyan, A. Terkulov
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow,Russia
A. Belyaev, E. Boos, M. Dubinin , L. Dudko, A. Ershov, A. Gribushin, V. Klyukhin,O. Kodolova, I. Lokhtin, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev Novosibirsk State University (NSU), Novosibirsk, Russia
V. Blinov , T. Dimova , L. Kardapoltsev , I. Ovtin , Y. Skovpen Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’,Protvino, Russia
I. Azhgirey, I. Bayshev, V. Kachanov, A. Kalinin, D. Konstantinov, V. Petrov, R. Ryutin, A. Sobol,S. Troshin, N. Tyurin, A. Uzunian, A. Volkov
National Research Tomsk Polytechnic University, Tomsk, Russia
A. Babaev, 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 , M. Dordevic, P. Milenovic, J. Milosevic, V. 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,L. Urda G ´omez, C. Willmott
Universidad Aut ´onoma de Madrid, Madrid, Spain
J.F. de Troc ´oniz, R. Reyes-Almanza
Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnolog´ıas Espaciales deAsturias (ICTEA), Oviedo, Spain
B. Alvarez Gonzalez, J. Cuevas, C. Erice, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Ca-ballero, E. Palencia Cortezon, C. Ram ´on ´Alvarez, J. Ripoll Sau, V. Rodr´ıguez Bouza, 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, C. Fernandez Madrazo, P.J. Fern´andez Manteca, A. Garc´ıa Alonso, G. Gomez,C. Martinez Rivero, P. Martinez Ruiz del Arbol, F. Matorras, P. Matorras Cuevas,J. Piedra Gomez, C. Prieels, F. Ricci-Tam, T. Rodrigo, A. Ruiz-Jimeno, L. Scodellaro,N. Trevisani, 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, J. Alimena, E. Auffray, G. Auzinger, J. Baechler, P. Baillon † ,A.H. Ball, D. Barney, J. Bendavid, N. Beni, M. Bianco, A. Bocci, E. Brondolin, T. Camporesi,M. Capeans Garrido, G. Cerminara, S.S. Chhibra, L. Cristella, D. d’Enterria, A. Dabrowski,N. Daci, 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. 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,M. Pitt, H. Qu, 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, M. Verzetti,J. Wanczyk , K.A. Wozniak, W.D. Zeuner Paul Scherrer Institut, Villigen, Switzerland
L. Caminada , A. Ebrahimi, W. Erdmann, R. Horisberger, Q. Ingram, H.C. Kaestli, D. Kotlinski,U. Langenegger, M. Missiroli, T. Rohe ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
K. Androsov , M. Backhaus, P. Berger, A. Calandri, N. Chernyavskaya, A. De Cosa,G. Dissertori, M. Dittmar, M. Doneg`a, C. Dorfer, F. Eble, T. Gadek, T.A. G ´omez Espinosa, C. Grab, D. Hits, W. Lustermann, A.-M. Lyon, R.A. Manzoni, C. Martin Perez, 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 , R. Wallny, D.H. Zhu Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , P. B¨artschi, C. Botta, D. Brzhechko, M.F. Canelli, A. De Wit, 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, S. Sanchez Cruz,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, P.r. Yu
Chulalongkorn University, Faculty of Science, Department of Physics, Bangkok, Thailand
B. Asavapibhop, C. Asawatangtrakuldee, N. Srimanobhas
C¸ ukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
F. Boran, S. Damarseckin , Z.S. Demiroglu, F. Dolek, I. Dumanoglu , E. Eskut, G. Gokbulut,Y. Guler, E. Gurpinar Guler , I. Hos , C. Isik, E.E. Kangal , O. Kara, A. Kayis Topaksu,U. Kiminsu, G. Onengut, K. Ozdemir , A. Polatoz, A.E. Simsek, B. Tali , U.G. Tok,S. Turkcapar, I.S. Zorbakir, C. Zorbilmez Middle East Technical University, Physics Department, Ankara, Turkey
B. Isildak , G. Karapinar , K. Ocalan , M. Yalvac Bogazici University, Istanbul, Turkey
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
D. Anthony, E. Bhal, S. Bologna, J.J. Brooke, A. Bundock, 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, R. White 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, V. Cepaitis,G.S. Chahal , D. Colling, P. Dauncey, G. Davies, M. Della Negra, S. Fayer, G. Fedi, G. Hall,M.H. Hassanshahi, G. Iles, J. Langford, L. Lyons, A.-M. Magnan, S. Malik, A. Martelli, J. Nash ,V. Palladino, M. Pesaresi, D.M. Raymond, A. Richards, A. Rose, E. Scott, C. Seez, A. Shtipliyski,A. Tapper, K. Uchida, T. Virdee , N. Wardle, S.N. Webb, D. Winterbottom, A.G. Zecchinelli Brunel University, Uxbridge, United Kingdom
K. Coldham, J.E. Cole, A. Khan, P. Kyberd, C.K. Mackay, I.D. Reid, L. Teodorescu, S. Zahid
Baylor University, Waco, USA
S. Abdullin, A. Brinkerhoff, B. Caraway, J. Dittmann, K. Hatakeyama, A.R. Kanuganti,B. McMaster, N. Pastika, S. Sawant, C. Smith, C. Sutantawibul, 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, D. Di Croce, 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, E. Fontanesi, D. Gastler, J. Rohlf,K. Salyer, D. Sperka, D. Spitzbart, I. Suarez, A. Tsatsos, 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 ,E. Laird, G. Landsberg, K.T. Lau, J. Lee, J. Luo, M. Narain, S. Sagir , E. Usai, W.Y. Wong,X. Yan, D. Yu, W. Zhang University of California, Davis, Davis, USA
C. Brainerd, R. Breedon, M. Calderon De La Barca Sanchez, M. Chertok, J. Conway, P.T. Cox,R. Erbacher, G. Haza, F. Jensen, O. Kukral, R. Lander, M. Mulhearn, D. Pellett, B. Regnery,D. Taylor, M. Tripathi, Y. Yao, F. Zhang
University of California, Los Angeles, USA
M. Bachtis, R. Cousins, A. Dasgupta, A. Datta, 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, M. Gordon, G. Hanson, G. Karapostoli, O.R. Long,N. Manganelli, M. Olmedo Negrete, 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, L. Giannini,D. Gilbert, J. Guiang, R. Kansal, V. Krutelyov, R. Lee, J. Letts, M. Masciovecchio, S. May,S. Padhi, M. Pieri, B.V. Sathia Narayanan, V. Sharma, M. Tadel, A. Vartak, F. W ¨urthwein,Y. Xiang, 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, M. Kilpatrick, J. Kim,B. Marsh, H. Mei, M. Oshiro, A. Ovcharova, 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, 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, I. Vorobiev
University of Colorado Boulder, Boulder, USA
J.P. Cumalat, W.T. Ford, E. MacDonald, 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, K. Mcdermott, J. Monroy, J.R. Patterson,D. Quach, J. Reichert, 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, K.F. Di Petrillo, V.D. Elvira, J. Freeman,Z. Gecse, L. Gray, D. Green, S. Gr ¨unendahl, O. Gutsche, R.M. Harris, R. Heller, T.C. Herwig,J. Hirschauer, B. Jayatilaka, S. Jindariani, M. Johnson, U. Joshi, P. Klabbers, T. Klijnsma,B. Klima, M.J. Kortelainen, K.H.M. Kwok, S. Lammel, D. Lincoln, R. Lipton, T. Liu, J. Lykken,C. Madrid, K. Maeshima, C. Mantilla, 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, 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, S. Rosenzweig, K. Shi, J. Sturdy, J. Wang, E. Yigitbasi, 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, R. Kumar Verma, 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, J. Davis, M. Eminizer, A.V. Gritsan, S. Kyriacou,P. Maksimovic, 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, K. Nam
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, 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, G. Andreassi, R. Bi, S. Brandt, W. Busza, I.A. Cali, Y. Chen, M. D’Alfonso,G. Gomez Ceballos, M. Goncharov, P. Harris, M. Hu, M. Klute, D. Kovalskyi, J. Krupa, Y.-J. Lee, B. Maier, A.C. Marini, C. Mironov, C. Paus, D. Rankin, C. Roland, G. Roland, Z. Shi,G.S.F. Stephans, K. Tatar, J. 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, M. Bryson, S. Chauhan, D.R. Claes, C. Fangmeier, L. Finco, F. Golf,J.R. Gonz´alez Fern´andez, C. Joo, I. Kravchenko, M. Musich, J.E. Siado, G.R. Snow † , W. Tabb,F. Yan State University of New York at Buffalo, Buffalo, USA
G. Agarwal, H. Bandyopadhyay, L. Hay, I. Iashvili, A. Kharchilava, C. McLean, D. Nguyen,J. Pekkanen, S. Rappoccio, A. Williams
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. Band, R. Bucci, N. Dev, R. Goldouzian, M. Hildreth, K. Hurtado Anampa, C. Jessop,K. Lannon, N. Loukas, N. Marinelli, I. Mcalister, F. Meng, K. Mohrman, Y. Musienko ,R. Ruchti, P. Siddireddy, M. Wayne, A. Wightman, M. Wolf, M. Zarucki, L. Zygala The Ohio State University, Columbus, USA
B. Bylsma, B. Cardwell, L.S. Durkin, B. Francis, C. Hill, A. Lefeld, M. Nunez Ornelas, K. Wei,B.L. Winer, B.R. Yates
Princeton University, Princeton, USA
F.M. Addesa, B. Bonham, P. Das, G. Dezoort, P. Elmer, A. Frankenthal, B. Greenberg, N. Haubrich, S. Higginbotham, A. Kalogeropoulos, G. Kopp, S. Kwan, D. Lange, M.T. Lucchini,D. Marlow, K. Mei, I. Ojalvo, J. Olsen, C. Palmer, D. Stickland, C. Tully
University of Puerto Rico, Mayaguez, USA
S. Malik, S. Norberg
Purdue University, West Lafayette, USA
A.S. Bakshi, V.E. Barnes, R. Chawla, S. Das, L. Gutay, M. Jones, A.W. Jung, S. Karmarkar,M. Liu, G. Negro, N. Neumeister, G. Paspalaki, C.C. Peng, S. Piperov, A. Purohit, J.F. Schulte,M. Stojanovic , J. Thieman, F. Wang, 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, A. Kumar, W. Li, B.P. Padley,R. Redjimi, J. Roberts † , 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, 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, 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, E. Wolfe
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, F. Fienga,C. Galloni, H. He, M. Herndon, A. Herv´e, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless,J. Madhusudanan Sreekala, A. Mallampalli, A. Mohammadi, 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 Universidade Estadual de Campinas, Campinas, Brazil5: Also at Federal University of Rio Grande do Sul, Porto Alegre, Brazil6: Also at University of Chinese Academy of Sciences, Beijing, China7: Also at Department of Physics, Tsinghua University, Beijing, China, Beijing, China8: Also at UFMS, Nova Andradina, Brazil9: Also at Nanjing Normal University Department of Physics, Nanjing, China10: Now at The University of Iowa, Iowa City, USA11: Also at Institute for Theoretical and Experimental Physics named by A.I. Alikhanov ofNRC ‘Kurchatov Institute’, Moscow, Russia12: Also at Joint Institute for Nuclear Research, Dubna, Russia13: Also at Ain Shams University, Cairo, Egypt14: Also at Zewail City of Science and Technology, Zewail, Egypt15: Also at British University in Egypt, Cairo, Egypt16: Also at Purdue University, West Lafayette, USA17: Also at Universit´e de Haute Alsace, Mulhouse, France18: Also at Tbilisi State University, Tbilisi, Georgia19: 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 Physics Department, Faculty of Science, Assiut University, Assiut, Egypt27: Also at Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary28: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary, Debrecen,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 IRFU, CEA, Universit´e Paris-Saclay, Gif-sur-Yvette, France49: Also at Institute for Nuclear Research, Moscow, Russia50: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’(MEPhI), Moscow, Russia51: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia52: Also at University of Florida, Gainesville, USA53: Also at Imperial College, London, United Kingdom54: Also at Moscow Institute of Physics and Technology, Moscow, Russia, Moscow, Russia55: Also at P.N. Lebedev Physical Institute, Moscow, Russia56: Also at California Institute of Technology, Pasadena, USA57: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia58: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia59: Also at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka60: Also at INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy, Pavia, Italy61: Also at National and Kapodistrian University of Athens, Athens, Greece62: Also at Ecole Polytechnique F´ed´erale Lausanne, Lausanne, Switzerland63: Also at Universit¨at Z ¨urich, Zurich, Switzerland64: Also at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria, Vienna, Austria65: Also at Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France66: Also at S¸ ırnak University, Sirnak, Turkey67: Also at Near East University, Research Center of Experimental Health Science, Nicosia,Turkey68: Also at Konya Technical University, Konya, Turkey69: Also at Istanbul University - Cerraphasa, Faculty of Engineering, Istanbul, Turkey70: Also at Mersin University, Mersin, Turkey71: Also at Piri Reis University, Istanbul, Turkey72: Also at Adiyaman University, Adiyaman, 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 Kingdom85: Also at Monash University, Faculty of Science, Clayton, Australia8