Rapidity distributions in exclusive Z + jet and photon + jet events in pp collisions at sqrt(s) = 7 TeV
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-PH-EP/2013-1692018/11/01
CMS-SMP-12-004
Rapidity distributions in exclusive Z + jet and γ + jet eventsin pp collisions at √ s = The CMS Collaboration ∗ Abstract
Rapidity distributions are presented for events containing either a Z boson or a pho-ton with a single jet in proton-proton collisions produced at the CERN LHC. Thedata, collected with the CMS detector at √ s = − . The individual rapidity distributions of the boson and the jet areconsistent within 5% with expectations from perturbative QCD. However, QCD pre-dictions for the sum and the difference in rapidities of the two final-state objects showdiscrepancies with CMS data. In particular, next-to-leading-order QCD calculations,and two common Monte Carlo event generators using different methods to matchmatrix-element partons with parton showers, appear inconsistent with the data aswell as with each other. Published in Physical Review Letters as doi:10.1103/PhysRevD.88.112009. c (cid:13) ∗ See Appendix A for the list of collaboration members a r X i v : . [ h e p - e x ] D ec From the time of Rutherford’s first scattering experiments, measuring angular distributionshas provided a tool for understanding the structure and interactions of matter. Measurementsof the rapidity distributions in V + jet events, where V refers either to a Z boson or a photon,can provide an important check of quantum chromodynamics (QCD) and event generatorsused to simulate elementary processes. For Z boson decays into e + e − or µ + µ − , triggering isvery efficient and nearly background-free, and from a theoretical point of view, the presence ofthe electroweak vertex makes the perturbative calculation of dynamical quantities even morerobust. Since next-to-leading-order (NLO) perturbative QCD calculations are available for Zbosons produced in association with four or fewer jets [1], as well as for γ + jet production [2–4], detailed comparison with data is possible. In addition, a precise understanding of theseprocesses is also required in searches for new physics and in studies of the Higgs boson, forwhich Z + jets events constitute an important background.The rapidity of a particle is defined as y = ( ) ln [( E + p z ) / ( E − p z )] , where E is the energyand p z is the momentum component along the direction of the counterclockwise circulatingproton beam. The invariant rapidity difference can be written in terms of the measured quan-tities y V and y jet as y dif = | y V − y jet | /2. The quantity y sum = | y V + y jet | /2 is the boost fromthe laboratory frame to the center-of-mass frame of the V and jet. In the laboratory frame, y V and y jet are highly correlated because V + jet production usually involves a relatively high-momentum valence quark interacting with a low-momentum gluon or antiquark, which re-sults in events where the V and jet are usually on the same end of the detector. The rapidities y sum and y dif are effectively rotations in phase space of the y V and y jet system that yield twoapproximately uncorrelated quantities. The distribution in y sum depends mainly on the par-ton distribution functions (PDF), while the distribution in y dif reflects the leading order (LO)partonic differential cross section. Distributions in the y sum and y dif quantities were measuredpreviously at √ s = V +jet events have been measured at the LHC by CMS [6] and ATLAS [7–10]. In this Letter, wecompare theoretical predictions for normalized distributions in | y V | , | y jet | , y sum , and y dif withdata collected by the Compact Muon Solenoid (CMS) experiment.The kinematic properties of Z + jets events at the Tevatron [5] were found to be well-describedby the NLO MCFM program [11, 12]. For Z + jets production at the LHC,
MCFM provides predic-tions together with estimates of their uncertainties. For γ + jet events, the program developedby Owens [3] is used for NLO predictions and their uncertainties. This calculation employsfragmentation functions [4] to parametrize small-angle photon emission. Previous studies ofthe transverse momentum ( p T ) distributions of photons showed agreement between LHC dataand a variety of QCD predictions [13–16]. In all MCFM calculations, both the renormalization( µ R ) and factorization ( µ F ) scales are set to the invariant mass of the lepton pair. For NLOprompt photon calculations, the scales are set to the p T of the photon.Programs that use matrix-element descriptions of jet systems are accurate only when the par-tons have large transverse momentum or are well separated, while event generators usingparton showers perform well in describing soft and small-angle radiation [17]. Hybrid meth-ods are used to combine matrix-element prescriptions and parton showers to optimize perfor-mance for all regions of phase space. These programs generally proceed in three stages: (i)calculating the lowest-order “tree-level” contribution, (ii) simulating parton showering andclustering of final-state partons into jets, and (iii) employing one of two schemes to mini-mize double-counting of matrix-element jets and those produced by parton showering. TheMLM [18] procedure rejects events when showering changes the event topology, while theCKKW method [19] uses a weighting scheme based on shower history. A previous comparisonof hybrid methods [20] found large differences in distributions of y dif between the MLM and CKKW methods for W + jet production. Hybrid models have been compared with V + jet dataat the Tevatron [5], where the CKKW method implemented in SHERPA provided the best over-all description of the observed distributions in y sum and y dif , but with a significantly differentcross section. We also compare predictions from the two hybrid event generators with our V + jet data using M AD G RAPH
SHERPA AD G RAPH , matching scales are chosen to be20 GeV for Z bosons and 9–12 GeV for photons. The µ R and µ F scales are set to (cid:113) m + Σ jets p and (cid:113)(cid:0) p γ T (cid:1) + Σ jets p for Z bosons and photons, respectively, where m Z is the mass of the Z bo-son and p γ T is the photon transverse momentum. The PYTHIA
SHERPA events, the matching scales are 20 and10 GeV for Z bosons and photons, respectively. The µ F and µ R scales are set to m Z and p γ T for Zbosons and photons, respectively. The parton-shower module APACIC ++ 2.0 [24] is used beforethe
PYTHIA hadronization procedure. In our comparison, the
SHERPA simulations use the NLOCTEQ6.6M [25] PDF. The use of different order PDF in hybrid calculations is disputed [26]:both LO and NLO PDF have been used in theory [20] and experiments [5, 9]. To investigatethis effect, the M AD G RAPH simulation is studied using both the LO and NLO CTEQ6 [27] PDF.The central feature of the CMS apparatus is a superconducting solenoid of 6 m internal di-ameter, providing a magnetic field of 3.8 T. A silicon pixel and strip tracker, a lead tungstatecrystal electromagnetic calorimeter, and a brass/scintillator hadron calorimeter reside withinthe magnetic field volume. Muons are detected in gas-ionization detectors embedded in thesteel of the flux-return yoke of the magnet. In addition to the barrel and endcap detectors, CMShas extensive forward calorimetry. A more detailed description of CMS is given in Ref. [28]. Aright-handed coordinate system is defined in CMS, with the origin at the center of the detector,the x axis pointing to the center of the LHC ring, and the y axis perpendicular to the plane ofthe LHC. The polar angle θ is measured from the positive z axis and the azimuthal angle φ ismeasured in the x - y plane in radians. Pseudorapidity, which is given by η = − ln [ tan ( θ /2 )] , isused for specifying acceptance requirements.The data were collected during 2011 at a pp center-of-mass energy of 7 TeV, correspondingto an integrated luminosity of 5.0 ± − [29]. Because of limitations in data handling, thetriggers used for photon candidates had to be partially suppressed, and the effective luminosityfor prompt-photon production was 4.9 ± − . The multilevel trigger requires two electronor two muon candidates, with respective minimum- p T thresholds of 17 and 8 GeV, or 18 and8 GeV, for the lepton of highest and next-highest p T . A photon candidate is required to have p γ T >
30 GeV.Event reconstruction requires at least one vertex with | z | <
15 cm located within the beampipe (radius < k T algorithm [31], with a distance parameter of0.5, and are required to have | η | < <
3% and resolution better than 10% [32], are required to have p T >
30 GeV. The difference between actual and simulated resolution is < ≈ from double parton scattering are both <
1% for V + jet events [33, 34]. Jets below threshold areignored, and if any other jet exceeds threshold, the event is rejected.Reconstructed Z boson events are required to have at least two oppositely charged leptons ofthe same flavor (electrons or muons), each with p T >
20 GeV and | η | < m Z ), and p T >
40 GeV.To include final-state radiation, the lepton energy is corrected by adding all photon energy de-posited within an ( η , φ ) cone of ∆ R = (cid:112) ( ∆ η ) + ( ∆ φ ) = p T of all reconstructed par-ticles (excluding the lepton) within a ( η , φ ) cone of ∆ R = p T . Electron and muon candidates are required to have an isolation of less than20% and 15%, respectively. Leptons and jets are required to be separated by ∆ R > p γ T >
40 GeV to assure a fully efficienttrigger, and | η | < ∆ R = η , φ ) space. The isolation variables for photons are defined with the sum ofthe charged-particle scalar p T required to be less than 2 GeV, and the sums of the electromag-netic and hadron calorimeter contributions to be less than 4.2 and 2.2 GeV, respectively. Thebackground resulting from fragmentation of jets into collimated neutral mesons that mimic aphoton is estimated using the “matrix” method of Ref. [38]. The transverse spatial distributionof the energy in a cluster is used as a discriminant. Templates for the spatial transverse distri-butions of photon showers are taken from PYTHIA events, and reconstructed through the fullCMS detector simulation via G
EANT y dif . The photon fractiondecreases from ( ± ) % at y dif = ( ± ) % at y dif = y sum , | y jet | , and | y γ | distributions, events are weightedby the photon fractions as a function of y dif , while using the independence on y sum to reducepoint-to-point fluctuations. The resulting effective fractions (photon purities) change by lessthan 12% within the examined ranges of y sum , | y jet | , and | y γ | .The reconstructed distributions are corrected for efficiency and resolution before determiningthe differential distributions in rapidity. For Z + jet events, efficiencies are evaluated from dataand simulation using a “tag-and-probe” procedure introduced in Ref. [38]. The simulated spec-tra are scaled to match collision data as a function of the lepton p T and η , and are then used tocompute the efficiency as a function of the rapidity variables. Photon efficiencies are obtainedfrom simulation, and rescaled using the measured electron efficiency, which is assumed to havethe same η dependence as photons. All rapidity distributions are corrected for the effects of de-tector resolution using simulated events in an iterative unfolding method [40], as implementedin the R OO U NFOLD package [41]. For all rapidity variables, the size of the correction is smallerthan 1%. Only the distribution of | y jet | has significant bin migration due to effects of resolution.The other variables have a correction factor consistent with unity.The sources and relative experimental uncertainties in the rapidity distributions for the largest y values of binned rapidity for the three analyses are shown in Table 1. The contributionsinclude the uncertainty in jet energy scale, unfolding of rapidity distributions, and the scaling Table 1: Summary of the relative experimental uncertainties in the yields for the bins of largest | y | . At smaller | y | values, these uncertainties are in general smaller. The first three rows reflectuncertainties common to all three analyses. The following nine rows quantify the uncertaintiesby particle type according to (i) uncorrelated statistical uncertainty, (ii) trigger and selectionefficiency, and (iii) correlated estimation of the background, separately for e + e − , µ + µ − , and γ events. Source | y V | (%) | y jet | (%) y sum (%) y dif (%)Jet energy 0.4 0.6 0.3 0.4Pileup reweight 0.5 0.1 0.3 0.1Unfolding — 5.0 — —e Statistical 7.1 2.2 8.0 5.7e Efficiency 3.1 0.9 3.2 2.8e Background 0.2 0.2 0.2 0.2 µ Statistical 6.3 1.9 6.1 4.6 µ Efficiency 1.5 0.4 1.2 1.2 µ Background 0.2 0.2 0.2 0.2 γ Statistical 6.6 19 8.6 15 γ Efficiency 0.4 0.6 0.4 1.0 γ Background 7.0 2.0 1.0 11of simulated pileup interactions (corresponding to a 5% uncertainty in the total inelastic crosssection). For Z + jet production, the contributions to the relative experimental uncertainties alsoinclude the uncertainty in lepton identification efficiency, dominated by the limited statisticalprecision of simulated event samples, and the uncertainty in the background subtraction.For photon production, bounds on the systematic uncertainty in the modeling of backgroundare determined from the difference between data and the
PYTHIA simulation in two-jet events.The maximum extent of the y dif measurement for photon production is limited by the numberof simulated events used to estimate the uncertainty from background. The systematic uncer-tainty in the photon background as a function of y dif varies between 2% and 11%, and is highlycorrelated across the range of y dif . There is also an uncorrelated uncertainty from the statisticalprecision in the estimated background that is included in the “Statistical” row of Table 1.The best linear unbiased estimator (BLUE) [42, 43] method is used to combine the correcteddistributions for the electron and muon decay channels. A covariance matrix of 2 N × N di-mensions, where 2 refers to the measurements for the electron and the muon channels and N is the number of bins, is ascribed to each distribution. The diagonal variances represent thequadratic sum of both correlated and uncorrelated uncertainties. The off-diagonal elementsare defined by 100% correlated uncertainties associated with the jet energy scale in the electronand muon channels. The size of the uncorrelated uncertainty in each bin is a factor of 3–5 timesgreater than the size of the correlated uncertainty.The sources of theoretical uncertainty in all three analyses include the choice of PDF, the valueof the strong coupling ( α s ), and µ R and µ F . These are studied using the MCFM and Owenscalculations. The uncertainty in the PDF is obtained using the PDF4LHC [44] prescription. Thebaseline set of PDF is CTEQ6.6M, while the CT10 [45], MSTW2008 [46], and NNPDF21 [47]PDF are used as alternatives. For both Z + jet and γ + jet events, these alternatives correspondto <
2% shift in all y distributions; however, using the LO rather than NLO parameterizationsof PDF produces ≈
10% difference in the y sum and | y V | distributions, whereas the y dif and | y jet | distributions are affected only slightly. Changes of α s within the CT10 bounds cause < change in all variables. The theoretical uncertainty from the choice of µ F and µ R is estimatedby changing these scales up and down by a factor of two. For Z + jet and γ + jet events, thedifferences in the normalized distributions as a function of y sum , | y jet | , and | y V | are < y dif is ≈ PYTHIA program.The normalized rapidity distributions for | y Z | , | y jet | , y dif , and y sum , along with predictions fromtheory, are shown in Fig. 1 for Z + jet events. The data for the | y Z | and | y jet | distributions agreeto better than 5% accuracy with SHERPA , M AD G RAPH , and
MCFM over the full range of themeasurement. The
SHERPA simulation reproduces the features of the y sum distribution betterthan the M AD G RAPH or MCFM programs. As shown in Fig. 1, when M AD G RAPH events aresimulated using the LO PDF, the distributions of y sum and | y Z | are less consistent with the data.The y dif distribution is consistent with MCFM for y dif < y dif . Since both M AD G RAPH and
SHERPA use the same LO matrix elements and approaches to parton showering, the differencein the distribution of y dif can be attributed to the matching algorithm, with the SHERPA
CKKWscheme appearing more consistent with the data. Indeed, the M AD G RAPH distribution of y dif resembles the LO distribution. The difference in y dif between the LO and NLO calculations isdue to the contribution from NLO diagrams with a gluon propagator that yield more forwardrapidities. The rapidity distributions for γ + jet events shown in Fig. 2 are consistent withperturbative QCD. The qualitative difference in y dif for the hybrid generators M AD G RAPH and
SHERPA is comparable to that observed in Z + jet events, although the statistical precision ofthe γ + jet measurement is insufficient to discriminate between the theoretical alternatives.In summary, the CMS detector was used to measure the rapidities of particles in events con-taining a vector (V) boson (either a Z boson or photon) in association with a single jet in ppcollisions at √ s = − . The rapidity distributions of | y V | and | y jet | are found to agree with predictions from the SHERPA , M AD G RAPH , and
MCFM
QCD models. The distribution for the sum of the V and jet rapidities is described by all pre-dictions to better than 5% precision for y sum < y dif ) is described to bet-ter than 10% by the MCFM prediction. The two hybrid event generators differ by as much as ≈
50% in their predictions for distributions in y dif , but SHERPA is significantly closer to data thanM AD G RAPH . Nevertheless,
SHERPA overestimates the cross section at higher y dif . We attributethe difference between the hybrid event generator distributions to the respective methods bywhich partons from matrix elements are matched to parton showers.The authors thank J. Campbell, R. Frederix, and J. Owens for their substantial contributionsto this work. We congratulate our colleagues in the CERN accelerator departments for theexcellent performance of the LHC and thank the technical and administrative staffs at CERNand at other CMS institutes for their contributions to the success of the CMS effort. In ad-dition, we gratefully acknowledge the computing centers and personnel of the WorldwideLHC Computing Grid for delivering so effectively the computing infrastructure essential toour analyses. Finally, we acknowledge the enduring support for the construction and opera-tion of the LHC and the CMS detector provided by the following funding agencies: BMWFand FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil);MEYS (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES(Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC,and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT |Y(Z)| / d y s d s / Z + 1 jetCMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)MCFM (NLO) -1 = 7 TeV, L = 5 fbsCMS, (a) | Z |y R a t i o t o M C F M SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) uncert. F m and R m MCFM MCFM PDF uncert. |Y(jet)| / d y s d s / Z + 1 jetCMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)MCFM (NLO) -1 = 7 TeV, L = 5 fbsCMS, (b) | jet |y R a t i o t o M C F M SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) uncert. F m and R m MCFM MCFM PDF uncert. | jet +Y Z / d y s d s / Z + 1 jetCMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)MCFM (NLO) -1 = 7 TeV, L = 5 fbsCMS, (c) sum y R a t i o t o M C F M SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) uncert. F m and R m MCFM MCFM PDF uncert. | jet -Y Z / d y s d s / Z + 1 jetCMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)MCFM (NLO) -1 = 7 TeV, L = 5 fbsCMS, (d) dif y R a t i o t o M C F M SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) uncert. F m and R m MCFM MCFM PDF uncert.
Figure 1: Distributions in absolute values of rapidities for (a) the Z boson, (b) the jet, (c) theirsums, and (d) their differences, normalized to unity. The data are shown after correcting forefficiency and resolution, and displayed with statistical and systematic uncertainties combinedin quadrature. The lower panel of each figure gives ratios of the data and simulations to theNLO calculation of MCFM. The ratio error bars include MCFM statistical uncertainties foldedwith data statistical and systematic uncertainties. Theoretical uncertainties in the MCFM cal-culations are shown as shaded areas representing variations of µ R , µ F , and PDF. Statisticaluncertainties for the M AD G RAPH and
SHERPA predictions are displayed as bands around thecentral values. The central value for M AD G RAPH simulations using LO PDF is depicted by aline. All other calculations use NLO versions of PDF. / d y s d s / + 1 jet g CMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)Owens (NLO)(a) -1 = 7 TeV, L = 4.9 pbsCMS, | g |y R a t i o t o O w en s uncert. F m and R m Owens Owens PDF uncert.SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) / d y s d s / + 1 jet g CMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)Owens (NLO)(b) -1 = 7 TeV, L = 4.9 pbsCMS, | jet |y R a t i o t o O w en s uncert. F m and R m Owens Owens PDF uncert.SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) / d y s d s / + 1 jet g CMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)Owens (NLO)(c) -1 = 7 TeV, L = 4.9 pbsCMS, sum y R a t i o t o O w en s uncert. F m and R m Owens Owens PDF uncert.SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF) / d y s d s / -0.10.00.10.20.3 + 1 jet g CMS DataSHERPA (NLO PDF)MADGRAPH (NLO PDF)Owens (NLO)(d) -1 = 7 TeV, L = 4.9 pbsCMS, dif y R a t i o t o O w en s uncert. F m and R m Owens Owens PDF uncert.SHERPA with stat. uncert.MADGRAPH with stat. uncert.MADGRAPH (LO PDF)
Figure 2: Distributions in absolute values of rapidities for (a) the photon, (b) the jet, (c) theirsums, and (d) their differences, normalized to unity. The data are shown after correcting forefficiency and resolution, and displayed with statistical and systematic uncertainties combinedin quadrature. The lower panel of each figure gives ratios of the data and simulations to theNLO calculation of Owens. The ratio error bars include Owens statistical uncertainties foldedwith data statistical and systematic uncertainties. Theoretical uncertainties in the Owens cal-culations are shown as shaded areas representing variations of µ R , µ F , and PDF. Statisticaluncertainties for the M AD G RAPH and
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Yerevan Physics Institute, Yerevan, Armenia
S. Chatrchyan, V. Khachatryan, A.M. Sirunyan, A. Tumasyan
Institut f ¨ur Hochenergiephysik der OeAW, Wien, Austria
W. Adam, T. Bergauer, M. Dragicevic, J. Er ¨o, C. Fabjan , M. Friedl, R. Fr ¨uhwirth , V.M. Ghete,N. H ¨ormann, J. Hrubec, M. Jeitler , W. Kiesenhofer, V. Kn ¨unz, M. Krammer , I. Kr¨atschmer,D. Liko, I. Mikulec, D. Rabady , B. Rahbaran, C. Rohringer, H. Rohringer, R. Sch ¨ofbeck,J. Strauss, A. Taurok, W. Treberer-Treberspurg, W. Waltenberger, C.-E. Wulz National Centre for Particle and High Energy Physics, Minsk, Belarus
V. Mossolov, N. Shumeiko, J. Suarez Gonzalez
Universiteit Antwerpen, Antwerpen, Belgium
S. Alderweireldt, M. Bansal, S. Bansal, T. Cornelis, E.A. De Wolf, X. Janssen, A. Knutsson,S. Luyckx, L. Mucibello, S. Ochesanu, B. Roland, R. Rougny, Z. Staykova, H. Van Haevermaet,P. Van Mechelen, N. Van Remortel, A. Van Spilbeeck
Vrije Universiteit Brussel, Brussel, Belgium
F. Blekman, S. Blyweert, J. D’Hondt, A. Kalogeropoulos, J. Keaveney, M. Maes, A. Olbrechts,S. Tavernier, W. Van Doninck, P. Van Mulders, G.P. Van Onsem, I. Villella
Universit´e Libre de Bruxelles, Bruxelles, Belgium
C. Caillol, B. Clerbaux, G. De Lentdecker, L. Favart, A.P.R. Gay, T. Hreus, A. L´eonard,P.E. Marage, A. Mohammadi, L. Perni`e, T. Reis, T. Seva, L. Thomas, C. Vander Velde, P. Vanlaer,J. Wang
Ghent University, Ghent, Belgium
V. Adler, K. Beernaert, L. Benucci, A. Cimmino, S. Costantini, S. Dildick, G. Garcia, B. Klein,J. Lellouch, A. Marinov, J. Mccartin, A.A. Ocampo Rios, D. Ryckbosch, M. Sigamani, N. Strobbe,F. Thyssen, M. Tytgat, S. Walsh, E. Yazgan, N. Zaganidis
Universit´e Catholique de Louvain, Louvain-la-Neuve, Belgium
S. Basegmez, C. Beluffi , G. Bruno, R. Castello, A. Caudron, L. Ceard, C. Delaere, T. du Pree,D. Favart, L. Forthomme, A. Giammanco , J. Hollar, P. Jez, V. Lemaitre, J. Liao, O. Militaru,C. Nuttens, D. Pagano, A. Pin, K. Piotrzkowski, A. Popov , M. Selvaggi, J.M. Vizan Garcia Universit´e de Mons, Mons, Belgium
N. Beliy, T. Caebergs, E. Daubie, G.H. Hammad
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
G.A. Alves, M. Correa Martins Junior, T. Martins, M.E. Pol, M.H.G. Souza
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
W.L. Ald´a J ´unior, W. Carvalho, J. Chinellato , A. Cust ´odio, E.M. Da Costa, D. De Jesus Damiao,C. De Oliveira Martins, S. Fonseca De Souza, H. Malbouisson, M. Malek, D. Matos Figueiredo,L. Mundim, H. Nogima, W.L. Prado Da Silva, A. Santoro, A. Sznajder, E.J. Tonelli Manganote ,A. Vilela Pereira Universidade Estadual Paulista a , Universidade Federal do ABC b , S˜ao Paulo, Brazil C.A. Bernardes b , F.A. Dias a ,7 , T.R. Fernandez Perez Tomei a , E.M. Gregores b , C. Lagana a ,P.G. Mercadante b , S.F. Novaes a , Sandra S. Padula a Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
V. Genchev , P. Iaydjiev , S. Piperov, M. Rodozov, G. Sultanov, M. Vutova A The CMS Collaboration
University of Sofia, Sofia, Bulgaria
A. Dimitrov, R. Hadjiiska, V. Kozhuharov, L. Litov, B. Pavlov, P. Petkov
Institute of High Energy Physics, Beijing, China
J.G. Bian, G.M. Chen, H.S. Chen, C.H. Jiang, D. Liang, S. Liang, X. Meng, J. Tao, J. Wang,X. Wang, Z. Wang, H. Xiao, M. Xu
State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
C. Asawatangtrakuldee, Y. Ban, Y. Guo, Q. Li, W. Li, S. Liu, Y. Mao, S.J. Qian, D. Wang, L. Zhang,W. Zou
Universidad de Los Andes, Bogota, Colombia
C. Avila, C.A. Carrillo Montoya, L.F. Chaparro Sierra, J.P. Gomez, B. Gomez Moreno,J.C. Sanabria
Technical University of Split, Split, Croatia
N. Godinovic, D. Lelas, R. Plestina , D. Polic, I. Puljak University of Split, Split, Croatia
Z. Antunovic, M. Kovac
Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, S. Duric, K. Kadija, J. Luetic, D. Mekterovic, S. Morovic, L. Tikvica
University of Cyprus, Nicosia, Cyprus
A. Attikis, G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis
Charles University, Prague, Czech Republic
M. Finger, M. Finger Jr.
Academy of Scientific Research and Technology of the Arab Republic of Egypt, EgyptianNetwork of High Energy Physics, Cairo, Egypt
A.A. Abdelalim , Y. Assran , S. Elgammal , A. Ellithi Kamel , M.A. Mahmoud , A. Radi National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
M. Kadastik, M. M ¨untel, M. Murumaa, M. Raidal, L. Rebane, A. Tiko
Department of Physics, University of Helsinki, Helsinki, Finland
P. Eerola, G. Fedi, M. Voutilainen
Helsinki Institute of Physics, Helsinki, Finland
J. H¨ark ¨onen, V. Karim¨aki, R. Kinnunen, M.J. Kortelainen, T. Lamp´en, K. Lassila-Perini, S. Lehti,T. Lind´en, P. Luukka, T. M¨aenp¨a¨a, T. Peltola, E. Tuominen, J. Tuominiemi, E. Tuovinen,L. Wendland
Lappeenranta University of Technology, Lappeenranta, Finland
T. Tuuva
DSM/IRFU, CEA/Saclay, Gif-sur-Yvette, France
M. Besancon, F. Couderc, M. Dejardin, D. Denegri, B. Fabbro, J.L. Faure, F. Ferri, S. Ganjour,A. Givernaud, P. Gras, G. Hamel de Monchenault, P. Jarry, E. Locci, J. Malcles, L. Millischer,A. Nayak, J. Rander, A. Rosowsky, M. Titov
Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
S. Baffioni, F. Beaudette, L. Benhabib, M. Bluj , P. Busson, C. Charlot, N. Daci, T. Dahms,M. Dalchenko, L. Dobrzynski, A. Florent, R. Granier de Cassagnac, M. Haguenauer, P. Min´e, C. Mironov, I.N. Naranjo, M. Nguyen, C. Ochando, P. Paganini, D. Sabes, R. Salerno, Y. Sirois,C. Veelken, A. Zabi
Institut Pluridisciplinaire Hubert Curien, Universit´e de Strasbourg, Universit´e de HauteAlsace Mulhouse, CNRS/IN2P3, Strasbourg, France
J.-L. Agram , J. Andrea, D. Bloch, J.-M. Brom, E.C. Chabert, C. Collard, E. Conte ,F. Drouhin , J.-C. Fontaine , D. Gel´e, U. Goerlach, C. Goetzmann, P. Juillot, A.-C. Le Bihan,P. Van Hove Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules,CNRS/IN2P3, Villeurbanne, France
S. Gadrat
Universit´e de Lyon, Universit´e Claude Bernard Lyon 1, CNRS-IN2P3, Institut de PhysiqueNucl´eaire de Lyon, Villeurbanne, France
S. Beauceron, N. Beaupere, G. Boudoul, S. Brochet, J. Chasserat, R. Chierici, D. Contardo,P. Depasse, H. El Mamouni, J. Fay, S. Gascon, M. Gouzevitch, B. Ille, T. Kurca, M. Lethuillier,L. Mirabito, S. Perries, L. Sgandurra, V. Sordini, M. Vander Donckt, P. Verdier, S. Viret
Institute of High Energy Physics and Informatization, Tbilisi State University, Tbilisi,Georgia
Z. Tsamalaidze RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
C. Autermann, S. Beranek, B. Calpas, M. Edelhoff, L. Feld, N. Heracleous, O. Hindrichs,K. Klein, A. Ostapchuk, A. Perieanu, F. Raupach, J. Sammet, S. Schael, D. Sprenger, H. Weber,B. Wittmer, V. Zhukov RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
M. Ata, J. Caudron, E. Dietz-Laursonn, D. Duchardt, M. Erdmann, R. Fischer, A. G ¨uth,T. Hebbeker, C. Heidemann, K. Hoepfner, D. Klingebiel, P. Kreuzer, M. Merschmeyer, A. Meyer,M. Olschewski, K. Padeken, P. Papacz, H. Pieta, H. Reithler, S.A. Schmitz, L. Sonnenschein,J. Steggemann, D. Teyssier, S. Th ¨uer, M. Weber
RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
V. Cherepanov, Y. Erdogan, G. Fl ¨ugge, H. Geenen, M. Geisler, W. Haj Ahmad, F. Hoehle,B. Kargoll, T. Kress, Y. Kuessel, J. Lingemann , A. Nowack, I.M. Nugent, L. Perchalla, O. Pooth,A. Stahl Deutsches Elektronen-Synchrotron, Hamburg, Germany
M. Aldaya Martin, I. Asin, N. Bartosik, J. Behr, W. Behrenhoff, U. Behrens, M. Bergholz ,A. Bethani, K. Borras, A. Burgmeier, A. Cakir, L. Calligaris, A. Campbell, S. Choudhury,F. Costanza, C. Diez Pardos, S. Dooling, T. Dorland, G. Eckerlin, D. Eckstein, G. Flucke,A. Geiser, I. Glushkov, P. Gunnellini, S. Habib, J. Hauk, G. Hellwig, D. Horton, H. Jung,M. Kasemann, P. Katsas, C. Kleinwort, H. Kluge, M. Kr¨amer, D. Kr ¨ucker, E. Kuznetsova,W. Lange, J. Leonard, K. Lipka, W. Lohmann , B. Lutz, R. Mankel, I. Marfin, I.-A. Melzer-Pellmann, A.B. Meyer, J. Mnich, A. Mussgiller, S. Naumann-Emme, O. Novgorodova,F. Nowak, J. Olzem, H. Perrey, A. Petrukhin, D. Pitzl, R. Placakyte, A. Raspereza, P.M. RibeiroCipriano, C. Riedl, E. Ron, M. ¨O. Sahin, J. Salfeld-Nebgen, R. Schmidt , T. Schoerner-Sadenius,N. Sen, M. Stein, R. Walsh, C. Wissing University of Hamburg, Hamburg, Germany
V. Blobel, H. Enderle, J. Erfle, E. Garutti, U. Gebbert, M. G ¨orner, M. Gosselink, J. Haller,K. Heine, R.S. H ¨oing, G. Kaussen, H. Kirschenmann, R. Klanner, R. Kogler, J. Lange, A The CMS Collaboration
I. Marchesini, T. Peiffer, N. Pietsch, D. Rathjens, C. Sander, H. Schettler, P. Schleper,E. Schlieckau, A. Schmidt, M. Schr ¨oder, T. Schum, M. Seidel, J. Sibille , V. Sola, H. Stadie,G. Steinbr ¨uck, J. Thomsen, D. Troendle, E. Usai, L. Vanelderen Institut f ¨ur Experimentelle Kernphysik, Karlsruhe, Germany
C. Barth, C. Baus, J. Berger, C. B ¨oser, E. Butz, T. Chwalek, W. De Boer, A. Descroix, A. Dierlamm,M. Feindt, M. Guthoff , F. Hartmann , T. Hauth , H. Held, K.H. Hoffmann, U. Husemann,I. Katkov , J.R. Komaragiri, A. Kornmayer , P. Lobelle Pardo, D. Martschei, Th. M ¨uller,M. Niegel, A. N ¨urnberg, O. Oberst, J. Ott, G. Quast, K. Rabbertz, F. Ratnikov, S. R ¨ocker, F.-P. Schilling, G. Schott, H.J. Simonis, F.M. Stober, R. Ulrich, J. Wagner-Kuhr, S. Wayand, T. Weiler,M. Zeise Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi,Greece
G. Anagnostou, G. Daskalakis, T. Geralis, S. Kesisoglou, A. Kyriakis, D. Loukas, A. Markou,C. Markou, E. Ntomari
University of Athens, Athens, Greece
L. Gouskos, A. Panagiotou, N. Saoulidou, E. Stiliaris
University of Io´annina, Io´annina, Greece
X. Aslanoglou, I. Evangelou, G. Flouris, C. Foudas, P. Kokkas, N. Manthos, I. Papadopoulos,E. Paradas
KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary
G. Bencze, C. Hajdu, P. Hidas, D. Horvath , F. Sikler, V. Veszpremi, G. Vesztergombi ,A.J. Zsigmond Institute of Nuclear Research ATOMKI, Debrecen, Hungary
N. Beni, S. Czellar, J. Molnar, J. Palinkas, Z. Szillasi
University of Debrecen, Debrecen, Hungary
J. Karancsi, P. Raics, Z.L. Trocsanyi, B. Ujvari
National Institute of Science Education and Research, Bhubaneswar, India
S.K. Swain Panjab University, Chandigarh, India
S.B. Beri, V. Bhatnagar, N. Dhingra, R. Gupta, M. Kaur, M.Z. Mehta, M. Mittal, N. Nishu,L.K. Saini, A. Sharma, J.B. Singh
University of Delhi, Delhi, India
Ashok Kumar, Arun Kumar, S. Ahuja, A. Bhardwaj, B.C. Choudhary, S. Malhotra,M. Naimuddin, K. Ranjan, P. Saxena, V. Sharma, R.K. Shivpuri
Saha Institute of Nuclear Physics, Kolkata, India
S. Banerjee, S. Bhattacharya, K. Chatterjee, S. Dutta, B. Gomber, Sa. Jain, Sh. Jain, R. Khurana,A. Modak, S. Mukherjee, D. Roy, S. Sarkar, M. Sharan, A.P. Singh
Bhabha Atomic Research Centre, Mumbai, India
A. Abdulsalam, D. Dutta, S. Kailas, V. Kumar, A.K. Mohanty , L.M. Pant, P. Shukla, A. Topkar Tata Institute of Fundamental Research - EHEP, Mumbai, India
T. Aziz, R.M. Chatterjee, S. Ganguly, S. Ghosh, M. Guchait , A. Gurtu , G. Kole,S. Kumar, M. Maity , G. Majumder, K. Mazumdar, G.B. Mohanty, B. Parida, K. Sudhakar,N. Wickramage7
T. Aziz, R.M. Chatterjee, S. Ganguly, S. Ghosh, M. Guchait , A. Gurtu , G. Kole,S. Kumar, M. Maity , G. Majumder, K. Mazumdar, G.B. Mohanty, B. Parida, K. Sudhakar,N. Wickramage7 Tata Institute of Fundamental Research - HECR, Mumbai, India
S. Banerjee, S. Dugad
Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
H. Arfaei, H. Bakhshiansohi, S.M. Etesami , A. Fahim , A. Jafari, M. Khakzad,M. Mohammadi Najafabadi, S. Paktinat Mehdiabadi, B. Safarzadeh , M. Zeinali University College Dublin, Dublin, Ireland
M. Grunewald
INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy M. Abbrescia a , b , L. Barbone a , b , C. Calabria a , b , S.S. Chhibra a , b , A. Colaleo a , D. Creanza a , c , N. DeFilippis a , c , M. De Palma a , b , L. Fiore a , G. Iaselli a , c , G. Maggi a , c , M. Maggi a , B. Marangelli a , b ,S. My a , c , S. Nuzzo a , b , N. Pacifico a , A. Pompili a , b , G. Pugliese a , c , G. Selvaggi a , b , L. Silvestris a ,G. Singh a , b , R. Venditti a , b , P. Verwilligen a , G. Zito a INFN Sezione di Bologna a , Universit`a di Bologna b , Bologna, Italy G. Abbiendi a , A.C. Benvenuti a , D. Bonacorsi a , b , S. Braibant-Giacomelli a , b , L. Brigliadori a , b ,R. Campanini a , b , P. Capiluppi a , b , A. Castro a , b , F.R. Cavallo a , G. Codispoti a , b , M. Cuffiani a , b ,G.M. Dallavalle a , F. Fabbri a , A. Fanfani a , b , D. Fasanella a , b , P. Giacomelli a , C. Grandi a ,L. Guiducci a , b , S. Marcellini a , G. Masetti a , M. Meneghelli a , b , A. Montanari a , F.L. Navarria a , b ,F. Odorici a , A. Perrotta a , F. Primavera a , b , A.M. Rossi a , b , T. Rovelli a , b , G.P. Siroli a , b , N. Tosi a , b ,R. Travaglini a , b INFN Sezione di Catania a , Universit`a di Catania b , Catania, Italy S. Albergo a , b , M. Chiorboli a , b , S. Costa a , b , F. Giordano a ,2 , R. Potenza a , b , A. Tricomi a , b , C. Tuve a , b INFN Sezione di Firenze a , Universit`a di Firenze b , Firenze, Italy G. Barbagli a , V. Ciulli a , b , C. Civinini a , R. D’Alessandro a , b , E. Focardi a , b , S. Frosali a , b , E. Gallo a ,S. Gonzi a , b , V. Gori a , b , P. Lenzi a , b , M. Meschini a , S. Paoletti a , G. Sguazzoni a , A. Tropiano a , b INFN Laboratori Nazionali di Frascati, Frascati, Italy
L. Benussi, S. Bianco, F. Fabbri, D. Piccolo
INFN Sezione di Genova a , Universit`a di Genova b , Genova, Italy P. Fabbricatore a , R. Musenich a , S. Tosi a , b INFN Sezione di Milano-Bicocca a , Universit`a di Milano-Bicocca b , Milano, Italy A. Benaglia a , F. De Guio a , b , M.E. Dinardo, S. Fiorendi a , b , S. Gennai a , A. Ghezzi a , b , P. Govoni a , b ,M.T. Lucchini a , b ,2 , S. Malvezzi a , R.A. Manzoni a , b ,2 , A. Martelli a , b ,2 , D. Menasce a , L. Moroni a ,M. Paganoni a , b , D. Pedrini a , S. Ragazzi a , b , N. Redaelli a , T. Tabarelli de Fatis a , b INFN Sezione di Napoli a , Universit`a di Napoli ’Federico II’ b , Universit`a dellaBasilicata (Potenza) c , Universit`a G. Marconi (Roma) d , Napoli, Italy S. Buontempo a , N. Cavallo a , c , A. De Cosa a , b , F. Fabozzi a , c , A.O.M. Iorio a , b , L. Lista a ,S. Meola a , d ,2 , M. Merola a , P. Paolucci a ,2 INFN Sezione di Padova a , Universit`a di Padova b , Universit`a di Trento (Trento) c , Padova,Italy P. Azzi a , N. Bacchetta a , M. Biasotto a ,30 , D. Bisello a , b , A. Branca a , b , R. Carlin a , b ,P. Checchia a , T. Dorigo a , U. Dosselli a , M. Galanti a , b ,2 , F. Gasparini a , b , U. Gasparini a , b ,P. Giubilato a , b , A. Gozzelino a , K. Kanishchev a , c , S. Lacaprara a , I. Lazzizzera a , c , M. Margoni a , b ,A.T. Meneguzzo a , b , J. Pazzini a , b , M. Pegoraro a , N. Pozzobon a , b , P. Ronchese a , b , F. Simonetto a , b ,E. Torassa a , M. Tosi a , b , A. Triossi a , S. Ventura a , P. Zotto a , b , A. Zucchetta a , b , G. Zumerle a , b A The CMS Collaboration
INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy M. Gabusi a , b , S.P. Ratti a , b , C. Riccardi a , b , P. Vitulo a , b INFN Sezione di Perugia a , Universit`a di Perugia b , Perugia, Italy M. Biasini a , b , G.M. Bilei a , L. Fan `o a , b , P. Lariccia a , b , G. Mantovani a , b , M. Menichelli a ,A. Nappi a , b † , F. Romeo a , b , A. Saha a , A. Santocchia a , b , A. Spiezia a , b INFN Sezione di Pisa a , Universit`a di Pisa b , Scuola Normale Superiore di Pisa c , Pisa, Italy K. Androsov a ,31 , P. Azzurri a , G. Bagliesi a , J. Bernardini a , T. Boccali a , G. Broccolo a , c , R. Castaldi a ,M.A. Ciocci a , R.T. D’Agnolo a , c ,2 , R. Dell’Orso a , F. Fiori a , c , L. Fo`a a , c , A. Giassi a , M.T. Grippo a ,31 ,A. Kraan a , F. Ligabue a , c , T. Lomtadze a , L. Martini a ,31 , A. Messineo a , b , F. Palla a , A. Rizzi a , b ,A. Savoy-Navarro a ,32 , A.T. Serban a , P. Spagnolo a , P. Squillacioti a , R. Tenchini a , G. Tonelli a , b ,A. Venturi a , P.G. Verdini a , C. Vernieri a , c INFN Sezione di Roma a , Universit`a di Roma b , Roma, Italy L. Barone a , b , F. Cavallari a , D. Del Re a , b , M. Diemoz a , M. Grassi a , b ,2 , E. Longo a , b , F. Margaroli a , b ,P. Meridiani a , F. Micheli a , b , S. Nourbakhsh a , b , G. Organtini a , b , R. Paramatti a , S. Rahatlou a , b ,C. Rovelli , L. Soffi a , b INFN Sezione di Torino a , Universit`a di Torino b , Universit`a del Piemonte Orientale (No-vara) c , Torino, Italy N. Amapane a , b , R. Arcidiacono a , c , S. Argiro a , b , M. Arneodo a , c , R. Bellan a , b , C. Biino a ,N. Cartiglia a , S. Casasso a , b , M. Costa a , b , A. Degano a , b , N. Demaria a , C. Mariotti a , S. Maselli a ,E. Migliore a , b , V. Monaco a , b , M. Musich a , M.M. Obertino a , c , N. Pastrone a , M. Pelliccioni a ,2 ,A. Potenza a , b , A. Romero a , b , M. Ruspa a , c , R. Sacchi a , b , A. Solano a , b , A. Staiano a , U. Tamponi a 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 ,2 , G. Della Ricca a , b , B. Gobbo a , C. LaLicata a , b , M. Marone a , b , D. Montanino a , b , A. Penzo a , A. Schizzi a , b , A. Zanetti a Kangwon National University, Chunchon, Korea
S. Chang, T.Y. Kim, S.K. Nam
Kyungpook National University, Daegu, Korea
D.H. Kim, G.N. Kim, J.E. Kim, D.J. Kong, Y.D. Oh, H. Park, D.C. Son
Chonnam National University, Institute for Universe and Elementary Particles, Kwangju,Korea
J.Y. Kim, Zero J. Kim, S. Song
Korea University, Seoul, Korea
S. Choi, D. Gyun, B. Hong, M. Jo, H. Kim, T.J. Kim, K.S. Lee, S.K. Park, Y. Roh
University of Seoul, Seoul, Korea
M. Choi, J.H. Kim, C. Park, I.C. Park, S. Park, G. Ryu
Sungkyunkwan University, Suwon, Korea
Y. Choi, Y.K. Choi, J. Goh, M.S. Kim, E. Kwon, B. Lee, J. Lee, S. Lee, H. Seo, I. Yu
Vilnius University, Vilnius, Lithuania
I. Grigelionis, A. Juodagalvis
Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-de La Cruz , R. Lopez-Fernandez,J. Mart´ınez-Ortega, A. Sanchez-Hernandez, L.M. Villasenor-Cendejas Universidad Iberoamericana, Mexico City, Mexico
S. Carrillo Moreno, F. Vazquez Valencia
Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
H.A. Salazar Ibarguen
Universidad Aut ´onoma de San Luis Potos´ı, San Luis Potos´ı, Mexico
E. Casimiro Linares, A. Morelos Pineda, M.A. Reyes-Santos
University of Auckland, Auckland, New Zealand
D. Krofcheck
University of Canterbury, Christchurch, New Zealand
A.J. Bell, P.H. Butler, R. Doesburg, S. Reucroft, H. Silverwood
National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
M. Ahmad, M.I. Asghar, J. Butt, H.R. Hoorani, S. Khalid, W.A. Khan, T. Khurshid, S. Qazi,M.A. Shah, M. Shoaib
National Centre for Nuclear Research, Swierk, Poland
H. Bialkowska, B. Boimska, T. Frueboes, M. G ´orski, M. Kazana, K. Nawrocki, K. Romanowska-Rybinska, M. Szleper, G. Wrochna, P. Zalewski
Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
G. Brona, K. Bunkowski, M. Cwiok, W. Dominik, K. Doroba, A. Kalinowski, M. Konecki,J. Krolikowski, M. Misiura, W. Wolszczak
Laborat ´orio de Instrumenta¸c˜ao e F´ısica Experimental de Part´ıculas, Lisboa, Portugal
N. Almeida, P. Bargassa, C. Beir˜ao Da Cruz E Silva, P. Faccioli, P.G. Ferreira Parracho,M. Gallinaro, F. Nguyen, J. Rodrigues Antunes, J. Seixas , J. Varela, P. Vischia Joint Institute for Nuclear Research, Dubna, Russia
S. Afanasiev, P. Bunin, M. Gavrilenko, I. Golutvin, I. Gorbunov, A. Kamenev, V. Karjavin,V. Konoplyanikov, A. Lanev, A. Malakhov, V. Matveev, P. Moisenz, V. Palichik, V. Perelygin,S. Shmatov, N. Skatchkov, V. Smirnov, A. Zarubin
Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
S. Evstyukhin, V. Golovtsov, Y. Ivanov, V. Kim, P. Levchenko, V. Murzin, V. Oreshkin, I. Smirnov,V. Sulimov, L. Uvarov, S. Vavilov, A. Vorobyev, An. Vorobyev
Institute for Nuclear Research, Moscow, Russia
Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, M. Kirsanov, N. Krasnikov, A. Pashenkov,D. Tlisov, A. Toropin
Institute for Theoretical and Experimental Physics, Moscow, Russia
V. Epshteyn, M. Erofeeva, V. Gavrilov, N. Lychkovskaya, V. Popov, G. Safronov, S. Semenov,A. Spiridonov, V. Stolin, E. Vlasov, A. Zhokin
P.N. Lebedev Physical Institute, Moscow, Russia
V. Andreev, M. Azarkin, I. Dremin, M. Kirakosyan, A. Leonidov, G. Mesyats, S.V. Rusakov,A. Vinogradov
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, A. Markina, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev A The CMS Collaboration
State Research Center of Russian Federation, Institute for High Energy Physics, Protvino,Russia
I. Azhgirey, I. Bayshev, S. Bitioukov, V. Kachanov, A. Kalinin, D. Konstantinov, V. Krychkine,V. Petrov, R. Ryutin, A. Sobol, L. Tourtchanovitch, S. Troshin, N. Tyurin, A. Uzunian, A. Volkov
University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade,Serbia
P. Adzic , M. Djordjevic, M. Ekmedzic, D. Krpic , J. Milosevic Centro de Investigaciones Energ´eticas Medioambientales y Tecnol ´ogicas (CIEMAT),Madrid, Spain
M. Aguilar-Benitez, J. Alcaraz Maestre, C. Battilana, E. Calvo, M. Cerrada, M. Chamizo Llatas ,N. Colino, B. De La Cruz, A. Delgado Peris, D. Dom´ınguez V´azquez, C. Fernandez Bedoya,J.P. Fern´andez Ramos, A. Ferrando, J. Flix, M.C. Fouz, P. Garcia-Abia, O. Gonzalez Lopez,S. Goy Lopez, J.M. Hernandez, M.I. Josa, G. Merino, E. Navarro De Martino, J. Puerta Pelayo,A. Quintario Olmeda, I. Redondo, L. Romero, J. Santaolalla, M.S. Soares, C. Willmott Universidad Aut ´onoma de Madrid, Madrid, Spain
C. Albajar, J.F. de Troc ´oniz
Universidad de Oviedo, Oviedo, Spain
H. Brun, J. Cuevas, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, L. LloretIglesias, J. Piedra Gomez
Instituto de F´ısica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
J.A. Brochero Cifuentes, I.J. Cabrillo, A. Calderon, S.H. Chuang, J. Duarte Campderros,M. Fernandez, G. Gomez, J. Gonzalez Sanchez, A. Graziano, C. Jorda, A. Lopez Virto, J. Marco,R. Marco, C. Martinez Rivero, F. Matorras, F.J. Munoz Sanchez, T. Rodrigo, A.Y. Rodr´ıguez-Marrero, A. Ruiz-Jimeno, L. Scodellaro, I. Vila, R. Vilar Cortabitarte
CERN, European Organization for Nuclear Research, Geneva, Switzerland
D. Abbaneo, E. Auffray, G. Auzinger, M. Bachtis, P. Baillon, A.H. Ball, D. Barney, J. Bendavid,J.F. Benitez, C. Bernet , G. Bianchi, P. Bloch, A. Bocci, A. Bonato, O. Bondu, C. Botta, H. Breuker,T. Camporesi, G. Cerminara, T. Christiansen, J.A. Coarasa Perez, S. Colafranceschi ,D. d’Enterria, A. Dabrowski, A. David, A. De Roeck, S. De Visscher, S. Di Guida, M. Dobson,N. Dupont-Sagorin, A. Elliott-Peisert, J. Eugster, W. Funk, G. Georgiou, M. Giffels, D. Gigi,K. Gill, D. Giordano, M. Girone, M. Giunta, F. Glege, R. Gomez-Reino Garrido, S. Gowdy,R. Guida, J. Hammer, M. Hansen, P. Harris, C. Hartl, A. Hinzmann, V. Innocente, P. Janot,E. Karavakis, K. Kousouris, K. Krajczar, P. Lecoq, Y.-J. Lee, C. Lourenc¸o, N. Magini, M. Malberti,L. Malgeri, M. Mannelli, L. Masetti, F. Meijers, S. Mersi, E. Meschi, R. Moser, M. Mulders,P. Musella, E. Nesvold, L. Orsini, E. Palencia Cortezon, E. Perez, L. Perrozzi, A. Petrilli,A. Pfeiffer, M. Pierini, M. Pimi¨a, D. Piparo, M. Plagge, L. Quertenmont, A. Racz, W. Reece,G. Rolandi , M. Rovere, H. Sakulin, F. Santanastasio, C. Sch¨afer, C. Schwick, I. Segoni,S. Sekmen, A. Sharma, P. Siegrist, P. Silva, M. Simon, P. Sphicas , D. Spiga, M. Stoye, A. Tsirou,G.I. Veres , J.R. Vlimant, H.K. W ¨ohri, S.D. Worm , W.D. Zeuner Paul Scherrer Institut, Villigen, Switzerland
W. Bertl, K. Deiters, W. Erdmann, K. Gabathuler, R. Horisberger, Q. Ingram, H.C. Kaestli,S. K ¨onig, D. Kotlinski, U. Langenegger, D. Renker, T. Rohe
Institute for Particle Physics, ETH Zurich, Zurich, Switzerland
F. Bachmair, L. B¨ani, L. Bianchini, P. Bortignon, M.A. Buchmann, B. Casal, N. Chanon,A. Deisher, G. Dissertori, M. Dittmar, M. Doneg`a, M. D ¨unser, P. Eller, K. Freudenreich, C. Grab, D. Hits, P. Lecomte, W. Lustermann, B. Mangano, A.C. Marini, P. Martinez Ruizdel Arbol, D. Meister, N. Mohr, F. Moortgat, C. N¨ageli , P. Nef, F. Nessi-Tedaldi, F. Pandolfi,L. Pape, F. Pauss, M. Peruzzi, F.J. Ronga, M. Rossini, L. Sala, A.K. Sanchez, A. Starodumov ,B. Stieger, M. Takahashi, L. Tauscher † , A. Thea, K. Theofilatos, D. Treille, C. Urscheler, R. Wallny,H.A. Weber Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , V. Chiochia, C. Favaro, M. Ivova Rikova, B. Kilminster, B. Millan Mejias,P. Otiougova, P. Robmann, H. Snoek, S. Taroni, S. Tupputi, M. Verzetti, Y. Yang National Central University, Chung-Li, Taiwan
M. Cardaci, K.H. Chen, C. Ferro, C.M. Kuo, S.W. Li, W. Lin, Y.J. Lu, R. Volpe, S.S. Yu
National Taiwan University (NTU), Taipei, Taiwan
P. Bartalini, P. Chang, Y.H. Chang, Y.W. Chang, Y. Chao, K.F. Chen, C. Dietz, U. Grundler, W.-S. Hou, Y. Hsiung, K.Y. Kao, Y.J. Lei, R.-S. Lu, D. Majumder, E. Petrakou, X. Shi, J.G. Shiu,Y.M. Tzeng, M. Wang
Chulalongkorn University, Bangkok, Thailand
B. Asavapibhop, N. Suwonjandee
Cukurova University, Adana, Turkey
A. Adiguzel, M.N. Bakirci , S. Cerci , C. Dozen, I. Dumanoglu, E. Eskut, S. Girgis,G. Gokbulut, E. Gurpinar, I. Hos, E.E. Kangal, A. Kayis Topaksu, G. Onengut , K. Ozdemir,S. Ozturk , A. Polatoz, K. Sogut , D. Sunar Cerci , B. Tali , H. Topakli , M. Vergili Middle East Technical University, Physics Department, Ankara, Turkey
I.V. Akin, T. Aliev, B. Bilin, S. Bilmis, M. Deniz, H. Gamsizkan, A.M. Guler, G. Karapinar ,K. Ocalan, A. Ozpineci, M. Serin, R. Sever, U.E. Surat, M. Yalvac, M. Zeyrek Bogazici University, Istanbul, Turkey
E. G ¨ulmez, B. Isildak , M. Kaya , O. Kaya , S. Ozkorucuklu , N. Sonmez Istanbul Technical University, Istanbul, Turkey
H. Bahtiyar , E. Barlas, K. Cankocak, Y.O. G ¨unaydin , F.I. Vardarlı, M. Y ¨ucel National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
L. Levchuk, P. Sorokin
University of Bristol, Bristol, United Kingdom
J.J. Brooke, E. Clement, D. Cussans, H. Flacher, R. Frazier, J. Goldstein, M. Grimes, G.P. Heath,H.F. Heath, L. Kreczko, S. Metson, D.M. Newbold , K. Nirunpong, A. Poll, S. Senkin,V.J. Smith, T. Williams Rutherford Appleton Laboratory, Didcot, United Kingdom
K.W. Bell, A. Belyaev , C. Brew, R.M. Brown, D.J.A. Cockerill, J.A. Coughlan, K. Harder,S. Harper, E. Olaiya, D. Petyt, B.C. Radburn-Smith, C.H. Shepherd-Themistocleous,I.R. Tomalin, W.J. Womersley Imperial College, London, United Kingdom
R. Bainbridge, O. Buchmuller, D. Burton, D. Colling, N. Cripps, M. Cutajar, P. Dauncey,G. Davies, M. Della Negra, W. Ferguson, J. Fulcher, D. Futyan, A. Gilbert, A. Guneratne Bryer,G. Hall, Z. Hatherell, J. Hays, G. Iles, M. Jarvis, G. Karapostoli, M. Kenzie, R. Lane, R. Lucas ,L. Lyons, A.-M. Magnan, J. Marrouche, B. Mathias, R. Nandi, J. Nash, A. Nikitenko , J. Pela, A The CMS Collaboration
M. Pesaresi, K. Petridis, M. Pioppi , D.M. Raymond, S. Rogerson, A. Rose, C. Seez, P. Sharp † ,A. Sparrow, A. Tapper, M. Vazquez Acosta, T. Virdee, S. Wakefield, N. Wardle, T. Whyntie Brunel University, Uxbridge, United Kingdom
M. Chadwick, J.E. Cole, P.R. Hobson, A. Khan, P. Kyberd, D. Leggat, D. Leslie, W. Martin,I.D. Reid, P. Symonds, L. Teodorescu, M. Turner
Baylor University, Waco, USA
J. Dittmann, K. Hatakeyama, A. Kasmi, H. Liu, T. Scarborough
The University of Alabama, Tuscaloosa, USA
O. Charaf, S.I. Cooper, C. Henderson, P. Rumerio
Boston University, Boston, USA
A. Avetisyan, T. Bose, C. Fantasia, A. Heister, P. Lawson, D. Lazic, J. Rohlf, D. Sperka, J. St. John,L. Sulak
Brown University, Providence, USA
J. Alimena, S. Bhattacharya, G. Christopher, D. Cutts, Z. Demiragli, A. Ferapontov,A. Garabedian, U. Heintz, S. Jabeen, G. Kukartsev, E. Laird, G. Landsberg, M. Luk, M. Narain,M. Segala, T. Sinthuprasith, T. Speer
University of California, Davis, Davis, USA
R. Breedon, G. Breto, M. Calderon De La Barca Sanchez, S. Chauhan, M. Chertok, J. Conway,R. Conway, P.T. Cox, R. Erbacher, M. Gardner, R. Houtz, W. Ko, A. Kopecky, R. Lander, T. Miceli,D. Pellett, F. Ricci-Tam, B. Rutherford, M. Searle, J. Smith, M. Squires, M. Tripathi, S. Wilbur,R. Yohay
University of California, Los Angeles, USA
V. Andreev, D. Cline, R. Cousins, S. Erhan, P. Everaerts, C. Farrell, M. Felcini, J. Hauser,M. Ignatenko, C. Jarvis, G. Rakness, P. Schlein † , E. Takasugi, P. Traczyk, V. Valuev, M. Weber University of California, Riverside, Riverside, USA
J. Babb, R. Clare, J. Ellison, J.W. Gary, G. Hanson, P. Jandir, H. Liu, O.R. Long, A. Luthra,H. Nguyen, S. Paramesvaran, J. Sturdy, S. Sumowidagdo, R. Wilken, S. Wimpenny
University of California, San Diego, La Jolla, USA
W. Andrews, J.G. Branson, G.B. Cerati, S. Cittolin, D. Evans, A. Holzner, R. Kelley,M. Lebourgeois, J. Letts, I. Macneill, S. Padhi, C. Palmer, G. Petrucciani, M. Pieri, M. Sani,V. Sharma, S. Simon, E. Sudano, M. Tadel, Y. Tu, A. Vartak, S. Wasserbaech , F. W ¨urthwein,A. Yagil, J. Yoo University of California, Santa Barbara, Santa Barbara, USA
D. Barge, C. Campagnari, M. D’Alfonso, T. Danielson, K. Flowers, P. Geffert, C. George, F. Golf,J. Incandela, C. Justus, P. Kalavase, D. Kovalskyi, V. Krutelyov, S. Lowette, R. Maga ˜na Villalba,N. Mccoll, V. Pavlunin, J. Ribnik, J. Richman, R. Rossin, D. Stuart, W. To, C. West
California Institute of Technology, Pasadena, USA
A. Apresyan, A. Bornheim, J. Bunn, Y. Chen, E. Di Marco, J. Duarte, D. Kcira, Y. Ma, A. Mott,H.B. Newman, C. Rogan, M. Spiropulu, V. Timciuc, J. Veverka, R. Wilkinson, S. Xie, R.Y. Zhu
Carnegie Mellon University, Pittsburgh, USA
V. Azzolini, A. Calamba, R. Carroll, T. Ferguson, Y. Iiyama, D.W. Jang, Y.F. Liu, M. Paulini,J. Russ, H. Vogel, I. Vorobiev University of Colorado at Boulder, Boulder, USA
J.P. Cumalat, B.R. Drell, W.T. Ford, A. Gaz, E. Luiggi Lopez, U. Nauenberg, J.G. Smith,K. Stenson, K.A. Ulmer, S.R. Wagner
Cornell University, Ithaca, USA
J. Alexander, A. Chatterjee, N. Eggert, L.K. Gibbons, W. Hopkins, A. Khukhunaishvili, B. Kreis,N. Mirman, G. Nicolas Kaufman, J.R. Patterson, A. Ryd, E. Salvati, W. Sun, W.D. Teo, J. Thom,J. Thompson, J. Tucker, Y. Weng, L. Winstrom, P. Wittich
Fairfield University, Fairfield, USA
D. Winn
Fermi National Accelerator Laboratory, Batavia, USA
S. Abdullin, M. Albrow, J. Anderson, G. Apollinari, L.A.T. Bauerdick, A. Beretvas, J. Berryhill,P.C. Bhat, K. Burkett, J.N. Butler, V. Chetluru, H.W.K. Cheung, F. Chlebana, S. Cihangir,V.D. Elvira, I. Fisk, J. Freeman, Y. Gao, E. Gottschalk, L. Gray, D. Green, O. Gutsche, D. Hare,R.M. Harris, J. Hirschauer, B. Hooberman, S. Jindariani, M. Johnson, U. Joshi, K. Kaadze,B. Klima, S. Kunori, S. Kwan, J. Linacre, D. Lincoln, R. Lipton, J. Lykken, K. Maeshima,J.M. Marraffino, V.I. Martinez Outschoorn, S. Maruyama, D. Mason, P. McBride, K. Mishra,S. Mrenna, Y. Musienko , C. Newman-Holmes, V. O’Dell, O. Prokofyev, N. Ratnikova,E. Sexton-Kennedy, S. Sharma, W.J. Spalding, L. Spiegel, L. Taylor, S. Tkaczyk, N.V. Tran,L. Uplegger, E.W. Vaandering, R. Vidal, J. Whitmore, W. Wu, F. Yang, J.C. Yun University of Florida, Gainesville, USA
D. Acosta, P. Avery, D. Bourilkov, M. Chen, T. Cheng, S. Das, M. De Gruttola, G.P. DiGiovanni, D. Dobur, A. Drozdetskiy, R.D. Field, M. Fisher, Y. Fu, I.K. Furic, J. Hugon, B. Kim,J. Konigsberg, A. Korytov, A. Kropivnitskaya, T. Kypreos, J.F. Low, K. Matchev, P. Milenovic ,G. Mitselmakher, L. Muniz, R. Remington, A. Rinkevicius, N. Skhirtladze, M. Snowball,J. Yelton, M. Zakaria Florida International University, Miami, USA
V. Gaultney, S. Hewamanage, S. Linn, P. Markowitz, G. Martinez, J.L. Rodriguez
Florida State University, Tallahassee, USA
T. Adams, A. Askew, J. Bochenek, J. Chen, B. Diamond, S.V. Gleyzer, J. Haas, S. Hagopian,V. Hagopian, K.F. Johnson, H. Prosper, V. Veeraraghavan, M. Weinberg
Florida Institute of Technology, Melbourne, USA
M.M. Baarmand, B. Dorney, M. Hohlmann, H. Kalakhety, F. Yumiceva
University of Illinois at Chicago (UIC), Chicago, USA
M.R. Adams, L. Apanasevich, V.E. Bazterra, R.R. Betts, I. Bucinskaite, J. Callner, R. Cavanaugh,O. Evdokimov, L. Gauthier, C.E. Gerber, D.J. Hofman, S. Khalatyan, P. Kurt, F. Lacroix,D.H. Moon, C. O’Brien, C. Silkworth, D. Strom, P. Turner, N. Varelas
The University of Iowa, Iowa City, USA
U. Akgun, E.A. Albayrak , B. Bilki , W. Clarida, K. Dilsiz, F. Duru, S. Griffiths, J.-P. Merlo,H. Mermerkaya , A. Mestvirishvili, A. Moeller, J. Nachtman, C.R. Newsom, H. Ogul, Y. Onel,F. Ozok , S. Sen, P. Tan, E. Tiras, J. Wetzel, T. Yetkin , K. Yi Johns Hopkins University, Baltimore, USA
B.A. Barnett, B. Blumenfeld, S. Bolognesi, G. Giurgiu, A.V. Gritsan, G. Hu, P. Maksimovic,C. Martin, M. Swartz, A. Whitbeck A The CMS Collaboration
The University of Kansas, Lawrence, USA
P. Baringer, A. Bean, G. Benelli, R.P. Kenny III, M. Murray, D. Noonan, S. Sanders, R. Stringer,J.S. Wood
Kansas State University, Manhattan, USA
A.F. Barfuss, I. Chakaberia, A. Ivanov, S. Khalil, M. Makouski, Y. Maravin, S. Shrestha,I. Svintradze
Lawrence Livermore National Laboratory, Livermore, USA
J. Gronberg, D. Lange, F. Rebassoo, D. Wright
University of Maryland, College Park, USA
A. Baden, B. Calvert, S.C. Eno, J.A. Gomez, N.J. Hadley, R.G. Kellogg, T. Kolberg, Y. Lu,M. Marionneau, A.C. Mignerey, K. Pedro, A. Peterman, A. Skuja, J. Temple, M.B. Tonjes,S.C. Tonwar
Massachusetts Institute of Technology, Cambridge, USA
A. Apyan, G. Bauer, W. Busza, I.A. Cali, M. Chan, L. Di Matteo, V. Dutta, G. Gomez Ceballos,M. Goncharov, D. Gulhan, Y. Kim, M. Klute, Y.S. Lai, A. Levin, P.D. Luckey, T. Ma, S. Nahn,C. Paus, D. Ralph, C. Roland, G. Roland, G.S.F. Stephans, F. St ¨ockli, K. Sumorok, D. Velicanu,R. Wolf, B. Wyslouch, M. Yang, Y. Yilmaz, A.S. Yoon, M. Zanetti, V. Zhukova
University of Minnesota, Minneapolis, USA
B. Dahmes, A. De Benedetti, G. Franzoni, A. Gude, J. Haupt, S.C. Kao, K. Klapoetke, Y. Kubota,J. Mans, N. Pastika, R. Rusack, M. Sasseville, A. Singovsky, N. Tambe, J. Turkewitz
University of Mississippi, Oxford, USA
J.G. Acosta, L.M. Cremaldi, R. Kroeger, S. Oliveros, L. Perera, R. Rahmat, D.A. Sanders,D. Summers
University of Nebraska-Lincoln, Lincoln, USA
E. Avdeeva, K. Bloom, S. Bose, D.R. Claes, A. Dominguez, M. Eads, R. Gonzalez Suarez,J. Keller, I. Kravchenko, J. Lazo-Flores, S. Malik, F. Meier, G.R. Snow
State University of New York at Buffalo, Buffalo, USA
J. Dolen, A. Godshalk, I. Iashvili, S. Jain, A. Kharchilava, A. Kumar, S. Rappoccio, Z. Wan
Northeastern University, Boston, USA
G. Alverson, E. Barberis, D. Baumgartel, M. Chasco, J. Haley, A. Massironi, D. Nash, T. Orimoto,D. Trocino, D. Wood, J. Zhang
Northwestern University, Evanston, USA
A. Anastassov, K.A. Hahn, A. Kubik, L. Lusito, N. Mucia, N. Odell, B. Pollack, A. Pozdnyakov,M. Schmitt, S. Stoynev, K. Sung, M. Velasco, S. Won
University of Notre Dame, Notre Dame, USA
D. Berry, A. Brinkerhoff, K.M. Chan, M. Hildreth, C. Jessop, D.J. Karmgard, J. Kolb, K. Lannon,W. Luo, S. Lynch, N. Marinelli, D.M. Morse, T. Pearson, M. Planer, R. Ruchti, J. Slaunwhite,N. Valls, M. Wayne, M. Wolf
The Ohio State University, Columbus, USA
L. Antonelli, B. Bylsma, L.S. Durkin, C. Hill, R. Hughes, K. Kotov, T.Y. Ling, D. Puigh,M. Rodenburg, G. Smith, C. Vuosalo, B.L. Winer, H. Wolfe
Princeton University, Princeton, USA
E. Berry, P. Elmer, V. Halyo, P. Hebda, J. Hegeman, A. Hunt, P. Jindal, S.A. Koay, P. Lujan, D. Marlow, T. Medvedeva, M. Mooney, J. Olsen, P. Pirou´e, X. Quan, A. Raval, H. Saka,D. Stickland, C. Tully, J.S. Werner, S.C. Zenz, A. Zuranski
University of Puerto Rico, Mayaguez, USA
E. Brownson, A. Lopez, H. Mendez, J.E. Ramirez Vargas
Purdue University, West Lafayette, USA
E. Alagoz, D. Benedetti, G. Bolla, D. Bortoletto, M. De Mattia, A. Everett, Z. Hu, M. Jones,K. Jung, O. Koybasi, M. Kress, N. Leonardo, D. Lopes Pegna, V. Maroussov, P. Merkel,D.H. Miller, N. Neumeister, I. Shipsey, D. Silvers, A. Svyatkovskiy, M. Vidal Marono, F. Wang,W. Xie, L. Xu, H.D. Yoo, J. Zablocki, Y. Zheng
Purdue University Calumet, Hammond, USA
S. Guragain, N. Parashar
Rice University, Houston, USA
A. Adair, B. Akgun, K.M. Ecklund, F.J.M. Geurts, W. Li, B.P. Padley, R. Redjimi, J. Roberts,J. Zabel
University of Rochester, Rochester, USA
B. Betchart, A. Bodek, R. Covarelli, P. de Barbaro, R. Demina, Y. Eshaq, T. Ferbel, A. Garcia-Bellido, P. Goldenzweig, J. Han, A. Harel, D.C. Miner, G. Petrillo, D. Vishnevskiy, M. Zielinski
The Rockefeller University, New York, USA
A. Bhatti, R. Ciesielski, L. Demortier, K. Goulianos, G. Lungu, S. Malik, C. Mesropian
Rutgers, The State University of New Jersey, Piscataway, USA
S. Arora, A. Barker, J.P. Chou, C. Contreras-Campana, E. Contreras-Campana, D. Duggan,D. Ferencek, Y. Gershtein, R. Gray, E. Halkiadakis, D. Hidas, A. Lath, S. Panwalkar, M. Park,R. Patel, V. Rekovic, J. Robles, S. Salur, S. Schnetzer, C. Seitz, S. Somalwar, R. Stone, S. Thomas,P. Thomassen, M. Walker
University of Tennessee, Knoxville, USA
G. Cerizza, M. Hollingsworth, K. Rose, S. Spanier, Z.C. Yang, A. York
Texas A&M University, College Station, USA
O. Bouhali , R. Eusebi, W. Flanagan, J. Gilmore, T. Kamon , V. Khotilovich, R. Montalvo,I. Osipenkov, Y. Pakhotin, A. Perloff, J. Roe, A. Safonov, T. Sakuma, I. Suarez, A. Tatarinov,D. Toback Texas Tech University, Lubbock, USA
N. Akchurin, C. Cowden, J. Damgov, C. Dragoiu, P.R. Dudero, C. Jeong, K. Kovitanggoon,S.W. Lee, T. Libeiro, I. Volobouev
Vanderbilt University, Nashville, USA
E. Appelt, A.G. Delannoy, S. Greene, A. Gurrola, W. Johns, C. Maguire, Y. Mao, A. Melo,M. Sharma, P. Sheldon, B. Snook, S. Tuo, J. Velkovska
University of Virginia, Charlottesville, USA
M.W. Arenton, S. Boutle, B. Cox, B. Francis, J. Goodell, R. Hirosky, A. Ledovskoy, C. Lin, C. Neu,J. Wood
Wayne State University, Detroit, USA
S. Gollapinni, R. Harr, P.E. Karchin, C. Kottachchi Kankanamge Don, P. Lamichhane,A. Sakharov A The CMS Collaboration
University of Wisconsin, Madison, USA
D.A. Belknap, L. Borrello, D. Carlsmith, M. Cepeda, S. Dasu, E. Friis, M. Grothe, R. Hall-Wilton, M. Herndon, A. Herv´e, P. Klabbers, J. Klukas, A. Lanaro, R. Loveless, A. Mohapatra,M.U. Mozer, I. Ojalvo, G.A. Pierro, G. Polese, I. Ross, A. Savin, W.H. Smith, J. Swanson † : Deceased1: Also at Vienna University of Technology, Vienna, Austria2: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland3: Also at Institut Pluridisciplinaire Hubert Curien, Universit´e de Strasbourg, Universit´e deHaute Alsace Mulhouse, CNRS/IN2P3, Strasbourg, France4: Also at National Institute of Chemical Physics and Biophysics, Tallinn, Estonia5: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University,Moscow, Russia6: Also at Universidade Estadual de Campinas, Campinas, Brazil7: Also at California Institute of Technology, Pasadena, USA8: Also at Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France9: Also at Zewail City of Science and Technology, Zewail, Egypt10: Also at Suez Canal University, Suez, Egypt11: Also at Cairo University, Cairo, Egypt12: Also at Fayoum University, El-Fayoum, Egypt13: Also at British University in Egypt, Cairo, Egypt14: Now at Ain Shams University, Cairo, Egypt15: Also at National Centre for Nuclear Research, Swierk, Poland16: Also at Universit´e de Haute Alsace, Mulhouse, France17: Also at Joint Institute for Nuclear Research, Dubna, Russia18: Also at Brandenburg University of Technology, Cottbus, Germany19: Also at The University of Kansas, Lawrence, USA20: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary21: Also at E ¨otv ¨os Lor´and University, Budapest, Hungary22: Also at Tata Institute of Fundamental Research - EHEP, Mumbai, India23: Also at Tata Institute of Fundamental Research - HECR, Mumbai, India24: Now at King Abdulaziz University, Jeddah, Saudi Arabia25: Also at University of Visva-Bharati, Santiniketan, India26: Also at University of Ruhuna, Matara, Sri Lanka27: Also at Isfahan University of Technology, Isfahan, Iran28: Also at Sharif University of Technology, Tehran, Iran29: Also at Plasma Physics Research Center, Science and Research Branch, Islamic AzadUniversity, Tehran, Iran30: Also at Laboratori Nazionali di Legnaro dell’INFN, Legnaro, Italy31: Also at Universit`a degli Studi di Siena, Siena, Italy32: Also at Purdue University, West Lafayette, USA33: Also at INFN Sezione di Roma, Roma, Italy34: Also at Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Mexico35: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia36: Also at Facolt`a Ingegneria, Universit`a di Roma, Roma, Italy37: Also at Scuola Normale e Sezione dell’INFN, Pisa, Italy38: Also at University of Athens, Athens, Greece39: Also at Rutherford Appleton Laboratory, Didcot, United Kingdom40: Also at Paul Scherrer Institut, Villigen, Switzerland41: Also at Institute for Theoretical and Experimental Physics, Moscow, Russia7