Search for jet extinction in the inclusive jet-pt spectrum from proton-proton collisions at sqrt(s) = 8 TeV
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-PH-EP/2013-0372014/08/22
CMS-EXO-12-051
Search for jet extinction in the inclusive jet- p T spectrumfrom proton-proton collisions at √ s = The CMS Collaboration ∗ Abstract
The first search at the LHC for the extinction of QCD jet production is presented, us-ing data collected with the CMS detector corresponding to an integrated luminosityof 10.7 fb − of proton-proton collisions at a center-of-mass energy of 8 TeV. The ex-tinction model studied in this analysis is motivated by the search for signatures ofstrong gravity at the TeV scale (terascale gravity) and assumes the existence of stringcouplings in the strong-coupling limit. In this limit, the string model predicts thesuppression of all high-transverse-momentum standard model processes, includingjet production, beyond a certain energy scale. To test this prediction, the measuredtransverse-momentum spectrum is compared to the theoretical prediction of the stan-dard model. No significant deficit of events is found at high transverse momentum.A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale. Published in Physical Review D as doi:10.1103/PhysRevD.90.032005. c (cid:13) ∗ See Appendix A for the list of collaboration members a r X i v : . [ h e p - e x ] A ug The scattering of high-energy particles in theories of quantum gravity is fundamentally differ-ent from that expected by the local quantum field theories of the standard model (SM) [1]. ThePlanck scale, the threshold at which quantum gravity becomes strong, is therefore a fundamen-tal boundary beyond which some modification to the SM is required. The Planck scale differsfrom the electroweak scale by 16 orders of magnitude, creating what is commonly known asthe hierarchy problem. There are many models that propose a mechanism by which thesetwo scales are related to one another through the hypothesized existence of extra spatial di-mensions. Propagation of gravitons through these extra dimensions could explain the relativeweakness of gravity compared to the strong and electroweak interactions. Depending on themodel, a variety of striking signatures of physics beyond the SM may be observed. As a re-sult, models that predict terascale gravity have been the subject of numerous searches at theCERN LHC [2–11]. Some of these searches are designed to look for effects such as resonantproduction and decay of new states, e.g. Randall–Sundrum gravitons [12], as well as for con-tinuum enhancements to SM processes from both virtual and direct graviton production [13].Direct searches for production of microscopic black holes consider events with high transversemomentum ( p T ) and multiple objects from the decay of possible high-entropy intermediatestates [1, 14, 15].As of yet, no signal indicative of terascale gravity has been found. Nevertheless, it has beensuggested that evidence of terascale gravity could also be found through more subtle effectson the jet- p T spectrum manifesting themselves as a deviation from the predictions of quan-tum chromodynamics (QCD) [1, 14, 16, 17]. While the production of black holes or particlesindicative of non-perturbative quantum gravity can have a rapidly increasing total cross sec-tion beyond some energy scale, their decay to isolated jets or other low-multiplicity final statescould be suppressed, leading to a full suppression of high- p T SM scattering processes (jet ex-tinction). Because jet production is the leading SM process at high p T , such effects would beinitially noticeable as a jet extinction signature [17]. In this sense, the search for jet extinctionis complementary to searches for black holes in high-multiplicity final states. These final statesarise in the asymptotic limit, where black holes are expected to behave classically [15]. The ex-tinction search explores an intermediate regime, where a high-multiplicity signature may notbe readily observable.There are several models that include extinction phenomena [16, 17]. In this, the first searchfor extinction effects at the LHC, we consider a model with a large-width Veneziano form fac-tor modification of QCD processes with an extinction mass scale M equivalent to the modifiedPlanck scale [17]. This form factor is discussed in greater detail in Section 3. Beyond the scale M , the predominance of intermediate high-entropy string states will suppress high- p T SM jetproduction. This search exploits techniques developed for the measurement of the differentialjet production cross section as a function of p T at the CMS [18] experiment to search for a mod-ification of the jet- p T spectrum consistent with extinction phenomena, in which there are fewerhigh- p T jets than expected from the SM. This analysis is especially sensitive to the correlationsof the systematic uncertainties between bins in jet- p T , so a detailed evaluation of the systematicuncertainties associated with the jet energy scale (JES) and the parton distribution functions(PDFs) is performed. The central feature of the CMS detector [19] is a superconducting solenoid of 6 m internal di-ameter, providing a field of 3.8 T. Within the field volume are silicon pixel and strip trackers, alead-tungstate crystal electromagnetic calorimeter (ECAL), and a brass and scintillator hadroncalorimeter (HCAL). Muons are measured in gas-ionization detectors embedded in the steelflux-return yoke.The CMS experiment uses a right-handed coordinate system, with the origin at the nominalinteraction point, the x axis pointing to the center of the LHC ring, the y axis pointing up(perpendicular to the plane of the LHC ring), and the z axis along the counterclockwise-beamdirection. The polar angle, θ , is measured from the positive z axis and the azimuthal angle, φ ,is measured in the xy plane. The pseudorapidity is defined as η = − ln [ tan ( θ /2 )] .The first level of the CMS trigger system is composed of customized hardware and uses in-formation from the calorimeters and muon detectors to select events of interest within a 4 µ sinterval following each beam crossing. The high-level trigger [20] (HLT) processor farm furtherdecreases the event rate from about 100 kHz to about 400 Hz before the data are recorded foranalysis. The SM prediction for the jet- p T spectrum is calculated at next-to-leading order (NLO) with theNLOJ ET ++ program within the FAST
NLO framework [21–23]. The CT10 PDF set [24] is usedin this calculation. The renormalization and factorization scales, µ R and µ F , are set equal to thejet- p T . The NLO jet spectra do not include non-perturbative (NP) effects or any modeling ofthe detector response. The NP effects, which account for hadronization and multi-parton in-teractions, are incorporated as corrections determined from the PYTHIA p T spectra. The NP correction de-creases monotonically as a function of jet- p T , from 1.03 at 592 GeV to 1.01 at 2500 GeV. Thisprocess is repeated using the HERWIG σ QCD /d p T,NLO . Thisprocedure is repeated to produce a smeared leading-order (LO) jet- p T spectrum, labeled asd σ QCD /d p T,LO . The predicted spectrum does not include weak radiative corrections [28], butthe impact of these corrections on our sensitivity to an extinction signature is evaluated duringthe limit-setting procedure.The effects of extinction at LO are also modeled using the
PYTHIA
MC generator. The matrixelements of each color channel are modified by Veneziano-type form factors [17, 29], whichaffect all 2 → M and a dimensionless width parameter related to the strength of thestring coupling. For small values of the width parameter, these form factors are similar tothose that describe string resonances [29, 30]. This is referred to as the weak-coupling limit.The regime where the width parameter is close to unity is known as the strong-coupling limit.In this limit, extinction physics rapidly overwhelms LO SM processes as well as any resonantstring production. Beyond the scale M , scattering processes are dominated by a continuumof high-entropy intermediate states, which results in suppression of SM jet production [17]. This search assumes a width parameter of one, the absolute strong-coupling limit of the stringmodel. Values of the width above one represent a very different phenomenology where theform factors no longer monotonically decrease as a function of jet momentum. This range ofthe width parameter has not been studied in this analysis.The effects of extinction are predominantly found in 2 → p T scale. The signal is approximated with aLO generator. The extinction process is assumed to have a very weak effect on higher-orderinteractions. A sigmoid function provides a good functional fit of the effect of the Venezianoform factors on the LO jet- p T spectrum [17]: F ( p T , M ) = + exp p T − p T,1/2 ( M ) p T,0 ( M ) . (1)Here, p T,1/2 describes the p T threshold at which LO jet production is reduced to half the SMexpectation, while p T,0 indicates how quickly the LO cross section exponentially falls relative tothe SM prediction. This relation yields the following equation for the jet- p T spectrum assumingextinction at LO, where σ Ext is the jet production cross section assuming extinction:d σ Ext d p T,LO = d σ QCD d p T,LO F ( p T , M ) (2)and at NLO: d σ Ext d p T,NLO = d σ QCD d p T,NLO − d σ QCD d p T,LO + d σ Ext d p T,LO . (3)Several simulations of LO jet production are performed, assuming values of M between 2 and5 TeV in increments of 500 GeV. The jet- p T spectrum is produced at NLO for each sample us-ing NP corrections and resolution smearing as described above. The values of p T,1/2 ( M ) and p T,0 ( M ) are extracted from a fit of F ( p T , M ) to the expected p T distribution for each value of M .The intermediate values of p T,1/2 ( M ) and p T,0 ( M ) are interpolated between these fitted points.The fitted value of p T,0 ( M ) is nearly independent of M and ranges between 260 and 330 GeV,while p T,1/2 ( M ) is about half of M . The systematic uncertainty associated with the choice of fitis negligible.For finite values of M , the predicted jet- p T spectrum is suppressed in systems with an invariantmass above M . At very large values of M , the SM and extinction spectra become identical. A particle-flow algorithm [31, 32] is used to reconstruct the events. Jets are formed by clus-tering the reconstructed particle-flow objects using the anti- k T algorithm [33] with a distanceparameter R of 0.7. This value is larger than the usual distance parameter of 0.5 used in mostCMS analyses. The larger cluster size reduces the likelihood that jets will be lost because ofdetector effects. The jet transverse momentum resolution is typically 15% at p T = 10 GeV, 8% at100 GeV, and 4% at 1 TeV. Jet energy corrections are derived from simulation and are confirmedwith measurements of energy balance in recorded dijet and photon+jet events. The combinedcorrections are approximately 5–10%, depending on the pseudorapidity and p T of the jet. To suppress spurious signals from detector noise [34], jets are required to satisfy stringent selec-tion criteria [35]. Specifically, each jet must contain at least two particles, one of which is acharged hadron. Additionally, each of the jet energy fractions carried by neutral hadrons, pho-tons, electrons, and muons must be less than 90%. This analysis is conducted in a regime wherethe purity and acceptance of the jets in data are both close to unity, and therefore no systematicuncertainty is attributed to the selection criteria.The data used in this analysis were collected from an HLT trigger that accepted events contain-ing at least one jet with p T >
320 GeV. An offset is applied to trigger-selected jets to subtractthe energy deposited as a result of additional interactions per beam crossing (pileup); this offsetdoes not affect the trigger efficiency. Events with objects originating from an interaction withinan LHC beam crossing are selected by requiring the presence of at least one primary vertexwithin 24 cm of the detector center along the z axis. The primary event vertex is chosen fromall reconstructed vertices by selecting the one with the largest sum of the p of all associatedtracks. For the purpose of additional noise suppression, the missing transverse energy, definedas the magnitude of the vector sum p T of all reconstructed particle-flow objects, must be lessthan 30% of the total transverse energy deposited in the detector. All jets in each event thatpass the selection criteria are binned as a function of jet- p T , following a convention adopted byother inclusive-jet analyses in CMS. The bin widths are variable, increasing with jet- p T and cor-responding approximately to the jet- p T resolution [18]. Jets are required to have p T >
592 GeVand pseudorapidity | η | < p T binsused. This search is performed in 18 p T bins between 592 and 2500 GeV. [GeV] T Inclusive jet p ] - [ G e V T / dp j e t s d N -2 -1 CMS , -1 L = 10.7 fb jets, R = 0.7 T Anti-k| < 1.5 h | T = p R m = F m = 8 TeVsObservedSystematic uncertaintyNLO QCD (CT10 normalized to data)Extinction scale M = 4 TeVExtinction scale M = 3 TeVExtinction scale M = 2 TeV Figure 1: Inclusive jet- p T spectrum (points) for | η | < M =
2, 3, and 4 TeV and shown by the dashed lines. The colored band showsthe magnitude of the sources of systematic uncertainty added in quadrature. These sources in-clude the JES, JER, PDFs, and scale variations. An additional source of systematic uncertaintyis attributed to the integrated luminosity during all formal comparisons between the data andmodels, but has little impact on the sensitivity to an extinction signature. The renormalizationscale ( µ R ) and factorization scale ( µ F ) are set to the p T of the hard-scattered parton.A comparison between the observed inclusive jet- p T spectrum and the spectrum predicted at [GeV] T Inclusive jet p Q CD / N j e t s N CMS , -1 L = 10.7 fb jets, R = 0.7 T Anti-k| < 1.5 h | = 8 TeVs T = p R m = F m ObservedNLO QCD (CT10 normalized to data)Systematic uncertaintyExtinction scale M = 4 TeVExtinction scale M = 3 TeVExtinction scale M = 2 TeV
Figure 2: The ratio of the inclusive jet p T spectrum to the NLO QCD prediction with non-perturbative corrections and convolved with the detector resolution. The horizontal bars onthe data indicate the width of each bin in p T . The colored band shows the quadratic sum of thesources of systematic uncertainty, including JES, JER, PDFs, and scale variations. The uncer-tainty in the integrated luminosity is excluded, as the model predictions have been normalizedto the number of jets observed in data. The dashed lines indicate the effects of extinction atthree different values of the extinction mass scale, M =
2, 3, and 4 TeV.NLO with the CT10 PDF set is shown in Figs. 1 and 2. The predicted spectrum includes non-perturbative corrections and smearing by the detector response, and is normalized to the totalnumber of jets in data that pass all selection criteria. However, in the comparison of the modelto the data as described in Section 5, the SM distribution is instead normalized to the number ofjets expected given an integrated luminosity of 10.7 fb − . The number of jets observed in datais 3% lower than the number expected assuming the CT10 PDF set at NLO. This discrepancyis attributed to uncertainty in the PDF parameters, scale variations in the cross section calcula-tion, or uncertainty in the total integrated luminosity. As the search for an extinction signatureis only concerned with the shape of the jet- p T spectrum, a small shift in the absolute normaliza-tion has little impact on the sensitivity. In Figs. 1 and 2 the data and the extinction model arecompared after any differences in the normalization have been resolved. In these figures, thequadratic sum of all sources of systematic uncertainty is shown. The total systematic uncer-tainty includes contributions from both theoretical and experimental sources. The theoreticaluncertainty is composed of the uncertainty from the PDFs as well as the uncertainty obtainedby varying the renormalization and factorization scales. The experimental uncertainty is de-rived from the uncertainties in the JES and JER. During the formal comparison of the model todata where the predicted spectrum is not normalized to the number of jets observed, an addi-tional source of uncertainty is attributed to the integrated luminosity. Figure 2 shows the ratioof the inclusive spectrum to the SM NLO expectation and includes the predicted spectra fromthe extinction model for three different values of the extinction mass scale M . To distinguish between SM NLO jet production and the alternative hypothesis (jet extinction),a profile-likelihood ratio test statistic [36] is constructed as a function of a signal strength pa-rameter, β ≡ M − . The variable β is chosen so that as β → We set limits using the modified-frequentist criterion CL s [37, 38]. All sources of systematicuncertainty are treated as nuisance parameters with log-normal prior constraints and are con-structed in the likelihood to have the same value across all jet- p T bins. This construction im-plicitly assumes that the systematic uncertainties are completely correlated in jet p T .To account for correlations in the JES and PDF uncertainties between p T bins, the uncertaintiesare subdivided into their underlying components. These individual components are stronglycorrelated across all p T bins and tend to be dominant at different values of jet- p T . As an exam-ple, uncertainties in the gluon PDF will be dominant at low p T compared to uncertainties in thequark PDFs. The JES uncertainty is decomposed into each of its orthogonal sources. For thePDF uncertainty, the contributions from each of the eigenvectors in the CT10 [24] PDF set areevaluated separately. As a crosscheck, the search is repeated with respect to the MSTW2008 [39]PDF set. Among the PDF sets in common use, the CT10 set predicts the highest inclusive jetcross section at high p T , while the MSTW2008 set gives one of the lowest. The results derivedwith respect to these two PDF sets serve as bounds on the result expected when using othersets, including those which are used in comparison to dedicated measurements of the inclusivejet production cross section [18], such as NNPDF [40], HERA [41], or ABKM [42].The CT10 PDF set comprises a central prediction and 26 eigenvectors. The central predictionassumes all PDF input parameters are set to their central values. Each eigenvector pair cor-responds to the upward and downward uncertainty in one of those input parameters. Thedifference between the predictions of each eigenvector pair and the central prediction is takenas a source of systematic uncertainty at ± σ . A source of systematic uncertainty is defined asnon-trivial if, at one standard deviation in either direction, it produces a shift in any p T bingreater than 1% of the occupancy given by the central prediction. Under this definition, 15 ofthe 26 CT10 eigenvectors are found to be non-trivial.The relative uncertainty described by the combined variation of these eigenvector sets in quadra-ture and the scale variations are shown in Fig. 3 as a function of jet- p T . The uncertainties as-sociated with the renormalization and factorization scales are computed by varying the scalescoherently up and down by a factor of 2. As the effect of extinction on the jet- p T spectrum isexpressed relative to the SM prediction, by construction the PDF variations do not affect any ofthe extinction parameters.Given the exponentially falling nature of the inclusive jet- p T spectrum, the JES is one of thedominant sources of systematic uncertainty. The JES uncertainty is composed of 19 orthogonalsources. Of these, seven are found to be non-trivial according to the criterion defined above:the absolute p T scale; the single pion response in the ECAL; the single pion response in theHCAL; the flavor composition correction; the time dependence; the pileup p T scale; and theextrapolation of the absolute scale into the high- p T regime [27]. The effects of JER are alsoincluded as nuisance parameters. The uncertainty in luminosity is taken as a constant scalefactor with a 2.6% relative uncertainty [43]. The relative uncertainty of all non-trivial detector-related sources of systematic uncertainty (JES, JER, and integrated luminosity) is shown inFig. 4 as a function of jet- p T .Including systematic uncertainties, the best-fit value of β is ( ± ) TeV − , which isconsistent with the SM expectation.The dependence of CL s on the parameter β is shown in Fig. 5. The observed upper limit on β is 0.090 TeV − at 95% confidence level (CL), translating to an observed lower limit on M of3.3 TeV. The expected upper limit on β is 0.088 TeV − at 95% CL, corresponding to an expectedlower limit on M of 3.4 TeV. These relatively close expected and observed values reflect good [GeV] T Inclusive jet p F r a c t i ona l un c e r t a i n t y -0.35-0.3-0.25-0.2-0.15-0.1-0.0500.050.1 Variations in CT10 PDF eigenvaluesScale variations in CT10
CMS Simulation = 8 TeVs
Figure 3: Uncertainty at ± p T bin. Forthe fit of the model to data and the limit setting procedure, the PDF uncertainty is subdividedinto individual sources for each eigenvector pair. [GeV] T Inclusive jet p F r a c t i ona l un c e r t a i n t y -0.1-0.0500.050.10.150.20.25 extrapolation T JES high pJES single pion response in ECALJES single pion response in HCAL scale T JES absolute pJES flavor correctionJES time dependenceJERlumi dependence T JES pileup p
CMS Simulation = 8 TeVs
Figure 4: Systematic uncertainty from all experimental sources at ± p T bin. The luminosity uncertainty isconstant in jet- p T , while the JES and JER uncertainties are modelled as transfer matrices be-tween all p T bins. The seven non-trivial sources of JES uncertainty are shown (out of 19 total). ] -2 [TeV b ) b ( s C L -1 CMS , -1 L = 10.7 fb = 8 TeVs
M [TeV]33.13.23.33.43.53.63.73.83.94 s Observed CL s Expected CL s +/- 1 s Expected CL s +/- 2 s Expected CL
Figure 5: The results of a CL s scan in the extinction mass scale, β = M − . The observeddependence of CL s on β is shown by the solid line. The observed upper limit on β is 0.090 TeV − at 95% CL (indicated by the horizontal dotted line), corresponding to a lower limit of 3.3 TeV onthe extinction mass scale M . The dashed line indicates the expected median of results for theSM hypothesis, while the green (dark) and yellow (light) bands indicate the quantiles, whichcontain 68% and 95% of the expected results, respectively.agreement between the observed data and the null hypothesis.As an additional check, the limit setting procedure is repeated using the MSTW2008 PDFset [39] to derive the SM hypothesis. The limits obtained using the CT10 and MSTW2008 PDFsagree to within 10%. As the MSTW2008 PDFs predict a lower cross section at very high jet- p T compared to CT10, the limit produced in this check is less conservative.Finally, the limits have been calculated including weak radiative corrections to the SM predic-tion, with a decrease of less than 100 GeV to the exclusion region. The first search for the extinction of jet production has been performed at the LHC usingproton-proton collision data at √ s = − . The extinction model studied in this analysis is mo-tivated by the search for signatures of terascale gravity at the LHC and assumes the existenceof string couplings in the strong-coupling limit. In this limit, the string model predicts sup-pression of high- p T jet production beyond an extinction mass scale M . A detailed comparisonbetween the measured p T spectrum and the theoretical prediction is conducted. No significantdeficit of events is found at high transverse momentum. A 95% confidence level lower limit of3.3 TeV is set on the extinction mass scale M . Acknowledgements
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 gratefully eferences acknowledge the computing centres and personnel of the Worldwide LHC Computing Gridfor delivering so effectively the computing infrastructure essential to our analyses. Finally, weacknowledge the enduring support for the construction and operation of the LHC and the CMSdetector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS andFWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS,MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus);MoER, ERC IUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA andCNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH(Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Re-public of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP,and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland);FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia);SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter,IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine);STFC (United Kingdom); DOE and NSF (USA).Individuals have received support from the Marie-Curie programme and the EuropeanResearch Council and EPLANET (European Union); the Leventis Foundation; the A. 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Yerevan Physics Institute, Yerevan, Armenia
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,C. Hartl, 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, 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, S. Ochesanu, B. Roland, R. Rougny, M. Van De Klundert, H. Van Haevermaet, P. VanMechelen, N. Van Remortel, A. Van Spilbeeck
Vrije Universiteit Brussel, Brussel, Belgium
F. Blekman, S. Blyweert, J. D’Hondt, N. Daci, N. Heracleous, A. Kalogeropoulos, J. Keaveney,T.J. Kim, S. Lowette, M. Maes, A. Olbrechts, Q. Python, D. Strom, 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, D. Dobur, L. Favart, A.P.R. Gay, A. Grebenyuk,A. L´eonard, 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. Crucy, S. Dildick, A. Fagot,G. Garcia, B. Klein, J. Mccartin, A.A. Ocampo Rios, D. Ryckbosch, S. Salva Diblen, M. Sigamani,N. Strobbe, F. Thyssen, M. Tytgat, 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, G.G. Da Silveira,C. Delaere, T. du Pree, D. Favart, L. Forthomme, A. Giammanco , J. Hollar, P. Jez,M. Komm, V. Lemaitre, J. Liao, C. Nuttens, D. Pagano, A. Pin, K. Piotrzkowski, A. Popov ,L. Quertenmont, M. Selvaggi, M. Vidal Marono, 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. Dos Reis Martins, M.E. Pol
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, J. Santaolalla, A. Santoro, A. Sznajder, E.J. TonelliManganote , 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 , P.G. Mercadante b ,S.F. Novaes a , Sandra S. Padula a A The CMS Collaboration
Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
A. Aleksandrov, V. Genchev , P. Iaydjiev, A. Marinov, S. Piperov, M. Rodozov, G. Sultanov,M. Vutova University of Sofia, Sofia, Bulgaria
A. Dimitrov, I. Glushkov, 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, M. Chen, R. Du, C.H. Jiang, D. Liang, S. Liang, R. Plestina ,J. Tao, X. Wang, Z. Wang 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, L.F. Chaparro Sierra, C. Florez, J.P. Gomez, B. Gomez Moreno, J.C. Sanabria
Technical University of Split, Split, Croatia
N. Godinovic, D. Lelas, D. Polic, I. Puljak
University of Split, Split, Croatia
Z. Antunovic, M. Kovac
Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, K. Kadija, J. Luetic, D. Mekterovic, L. Sudic
University of Cyprus, Nicosia, Cyprus
A. Attikis, G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis
Charles University, Prague, Czech Republic
M. Bodlak, M. Finger, M. Finger Jr.
Academy of Scientific Research and Technology of the Arab Republic of Egypt, EgyptianNetwork of High Energy Physics, Cairo, Egypt
Y. Assran , S. Elgammal , M.A. Mahmoud , A. Radi National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
M. Kadastik, M. Murumaa, M. Raidal, 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, C. Favaro, F. Ferri,S. Ganjour, A. Givernaud, P. Gras, G. Hamel de Monchenault, P. Jarry, E. Locci, J. Malcles,A. Nayak, J. Rander, A. Rosowsky, M. Titov Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
S. Baffioni, F. Beaudette, P. Busson, C. Charlot, T. Dahms, M. Dalchenko, L. Dobrzynski,N. Filipovic, A. Florent, R. Granier de Cassagnac, L. Mastrolorenzo, P. Min´e, C. Mironov,I.N. Naranjo, M. Nguyen, C. Ochando, P. Paganini, R. Salerno, J.B. Sauvan, Y. Sirois, C. Veelken,Y. Yilmaz, A. Zabi
Institut Pluridisciplinaire Hubert Curien, Universit´e de Strasbourg, Universit´e de HauteAlsace Mulhouse, CNRS/IN2P3, Strasbourg, France
J.-L. Agram , J. Andrea, A. Aubin, D. Bloch, J.-M. Brom, E.C. Chabert, C. Collard, E. Conte ,J.-C. Fontaine , D. Gel´e, U. Goerlach, C. Goetzmann, 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, C.A. Carrillo Montoya, J. Chasserat,R. Chierici, D. Contardo , P. Depasse, H. El Mamouni, J. Fan, J. Fay, S. Gascon, M. Gouzevitch,B. Ille, T. Kurca, M. Lethuillier, L. Mirabito, S. Perries, J.D. Ruiz Alvarez, D. Sabes, L. Sgandurra,V. Sordini, M. Vander Donckt, P. Verdier, S. Viret, H. Xiao 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, M. Bontenackels, B. Calpas, M. Edelhoff, L. Feld, 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, S. Knutzen, P. Kreuzer,M. Merschmeyer, A. Meyer, M. Olschewski, K. Padeken, P. Papacz, H. Reithler, S.A. Schmitz,L. Sonnenschein, 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
I. Asin, N. Bartosik, J. Behr, W. Behrenhoff, U. Behrens, A.J. Bell, 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, T. Eichhorn, G. Flucke,J. Garay Garcia, A. Geiser, P. Gunnellini, J. Hauk, G. Hellwig, M. Hempel, D. Horton, H. Jung,M. Kasemann, P. Katsas, J. Kieseler, C. Kleinwort, D. Kr ¨ucker, W. Lange, J. Leonard, K. Lipka,A. Lobanov, 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, E. Ntomari,H. Perrey, D. Pitzl, R. Placakyte, A. Raspereza, P.M. Ribeiro Cipriano, E. Ron, M. ¨O. Sahin,J. Salfeld-Nebgen, P. Saxena, R. Schmidt , T. Schoerner-Sadenius, M. Schr ¨oder, S. Spannagel,A.D.R. Vargas Trevino, R. Walsh, C. Wissing A The CMS Collaboration
University of Hamburg, Hamburg, Germany
M. Aldaya Martin, V. Blobel, M. Centis Vignali, J. Erfle, E. Garutti, K. Goebel, M. G ¨orner,M. Gosselink, J. Haller, R.S. H ¨oing, H. Kirschenmann, R. Klanner, R. Kogler, J. Lange,T. Lapsien, T. Lenz, I. Marchesini, J. Ott, T. Peiffer, N. Pietsch, D. Rathjens, C. Sander,H. Schettler, P. Schleper, E. Schlieckau, A. Schmidt, M. Seidel, J. Sibille , V. Sola, H. Stadie,G. Steinbr ¨uck, 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, F. Hartmann , T. Hauth , U. Husemann, I. Katkov , A. Kornmayer , E. Kuznetsova,P. Lobelle Pardo, M.U. Mozer, Th. M ¨uller, A. N ¨urnberg, G. Quast, K. Rabbertz, F. Ratnikov,S. R ¨ocker, H.J. Simonis, F.M. Stober, R. Ulrich, J. Wagner-Kuhr, S. Wayand, T. Weiler, R. Wolf Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi,Greece
G. Anagnostou, G. Daskalakis, T. Geralis, V.A. Giakoumopoulou, A. Kyriakis, D. Loukas,A. Markou, C. Markou, A. Psallidas, I. Topsis-Giotis
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
Wigner Research Centre for 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. Karancsi , J. Molnar, J. Palinkas, Z. Szillasi University of Debrecen, Debrecen, Hungary
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, A.K. Kalsi, M. Kaur, M. Mittal, N. Nishu,J.B. Singh
University of Delhi, Delhi, India
Ashok Kumar, Arun Kumar, S. Ahuja, A. Bhardwaj, B.C. Choudhary, A. Kumar, S. Malhotra,M. Naimuddin, K. Ranjan, V. Sharma
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
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, Mumbai, India
T. Aziz, S. Banerjee, R.M. Chatterjee, R.K. Dewanjee, S. Dugad, S. Ganguly, S. Ghosh,7
T. Aziz, S. Banerjee, R.M. Chatterjee, R.K. Dewanjee, S. Dugad, S. Ganguly, S. Ghosh,7 M. Guchait, A. Gurtu , G. Kole, S. Kumar, M. Maity , G. Majumder, K. Mazumdar,G.B. Mohanty, B. Parida, K. Sudhakar, N. Wickramage Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
H. Bakhshiansohi, H. Behnamian, S.M. Etesami , A. Fahim , R. Goldouzian, A. Jafari,M. Khakzad, M. Mohammadi Najafabadi, M. Naseri, S. Paktinat Mehdiabadi, B. Safarzadeh ,M. Zeinali 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 , 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 , S. My a , c , S. Nuzzo a , b ,A. Pompili a , b , G. Pugliese a , c , R. Radogna a , b ,2 , G. Selvaggi a , b , L. Silvestris a ,2 , 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 ,2 , A. Montanari 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 , b , R. Travaglini a , b INFN Sezione di Catania a , Universit`a di Catania b , CSFNSM c , Catania, Italy S. Albergo a , b , G. Cappello a , M. Chiorboli a , b , S. Costa a , b , F. Giordano a , c ,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 , E. Gallo a , S. Gonzi a , b ,V. Gori a , b ,2 , 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 F. Ferro a , M. Lo Vetere a , b , E. Robutti a , S. Tosi a , b INFN Sezione di Milano-Bicocca a , Universit`a di Milano-Bicocca b , Milano, Italy M.E. Dinardo a , b , S. Fiorendi a , b ,2 , S. Gennai a ,2 , R. Gerosa , A. Ghezzi a , b , P. Govoni a , b ,M.T. Lucchini a , b ,2 , S. Malvezzi a , R.A. Manzoni a , b , A. Martelli a , b , B. Marzocchi, 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 , S. Di Guida a , d ,2 , 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 , D. Bisello a , b , A. Branca a , b , R. Carlin a , b , M. Dall’Osso a , b ,T. Dorigo a , M. Galanti a , b , F. Gasparini a , b , P. Giubilato a , b , A. Gozzelino a , K. Kanishchev a , c ,S. Lacaprara a , M. Margoni a , b , A.T. Meneguzzo a , b , F. Montecassiano a , M. Passaseo a , J. Pazzini a , b ,N. Pozzobon a , b , P. Ronchese a , b , F. Simonetto a , b , E. Torassa a , M. Tosi a , b , S. Vanini a , b , 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. Salvini a , P. Vitulo a , b INFN Sezione di Perugia a , Universit`a di Perugia b , Perugia, Italy M. Biasini a , b , G.M. Bilei a , D. Ciangottini a , b , L. Fan `o a , b , P. Lariccia a , b , G. Mantovani a , b ,M. Menichelli a , F. Romeo a , b , A. Saha a , A. Santocchia a , b , A. Spiezia a , b ,2 INFN Sezione di Pisa a , Universit`a di Pisa b , Scuola Normale Superiore di Pisa c , Pisa, Italy K. Androsov a ,26 , P. Azzurri a , G. Bagliesi a , J. Bernardini a , T. Boccali a , G. Broccolo a , c , R. Castaldi a ,M.A. Ciocci a ,26 , R. Dell’Orso a , S. Donato a , c , F. Fiori a , c , L. Fo`a a , c , A. Giassi a , M.T. Grippo a ,26 ,F. Ligabue a , c , T. Lomtadze a , L. Martini a , b , A. Messineo a , b , C.S. Moon a ,27 , F. Palla a ,2 , A. Rizzi a , b ,A. Savoy-Navarro a ,28 , A.T. Serban a , P. Spagnolo a , P. Squillacioti a ,26 , R. Tenchini a , G. Tonelli a , b ,A. Venturi a , P.G. Verdini a , C. Vernieri a , c ,2 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 , C. Jorda a , E. Longo a , b ,F. Margaroli a , b , P. Meridiani a , F. Micheli a , b ,2 , S. Nourbakhsh a , b , G. Organtini a , b , R. Paramatti a ,S. Rahatlou a , b , C. Rovelli a , F. Santanastasio a , b , L. Soffi a , b ,2 , P. Traczyk 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 ,2 , M. Arneodo a , c , R. Bellan a , b , C. Biino a ,N. Cartiglia a , S. Casasso a , b ,2 , M. Costa a , b , A. Degano a , b , N. Demaria a , L. Finco a , b , C. Mariotti a ,S. Maselli a , E. Migliore a , b , V. Monaco a , b , M. Musich a , M.M. Obertino a , c ,2 , G. Ortona a , b ,L. Pacher a , b , N. Pastrone a , M. Pelliccioni a , G.L. Pinna Angioni a , b , 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 , G. Della Ricca a , b , B. Gobbo a , C. LaLicata a , b , M. Marone a , b , D. Montanino a , b , A. Schizzi a , b ,2 , T. Umer a , b , A. Zanetti a Kangwon National University, Chunchon, Korea
S. Chang, A. Kropivnitskaya, S.K. Nam
Kyungpook National University, Daegu, Korea
D.H. Kim, G.N. Kim, M.S. Kim, D.J. Kong, S. Lee, Y.D. Oh, H. Park, A. Sakharov, D.C. Son
Chonnam National University, Institute for Universe and Elementary Particles, Kwangju,Korea
J.Y. Kim, S. Song
Korea University, Seoul, Korea
S. Choi, D. Gyun, B. Hong, M. Jo, H. Kim, Y. Kim, B. Lee, K.S. Lee, S.K. Park, Y. Roh
University of Seoul, Seoul, Korea
M. Choi, J.H. Kim, I.C. Park, S. Park, G. Ryu, M.S. Ryu
Sungkyunkwan University, Suwon, Korea
Y. Choi, Y.K. Choi, J. Goh, E. Kwon, J. Lee, H. Seo, I. Yu
Vilnius University, Vilnius, Lithuania
A. Juodagalvis
National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
J.R. Komaragiri Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-de La Cruz , R. Lopez-Fernandez,A. Sanchez-Hernandez Universidad Iberoamericana, Mexico City, Mexico
S. Carrillo Moreno, F. Vazquez Valencia
Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
I. Pedraza, H.A. Salazar Ibarguen
Universidad Aut ´onoma de San Luis Potos´ı, San Luis Potos´ı, Mexico
E. Casimiro Linares, A. Morelos Pineda
University of Auckland, Auckland, New Zealand
D. Krofcheck
University of Canterbury, Christchurch, New Zealand
P.H. Butler, S. Reucroft
National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
A. Ahmad, M. Ahmad, Q. Hassan, H.R. Hoorani, S. Khalid, W.A. Khan, T. Khurshid,M.A. Shah, M. Shoaib
National Centre for Nuclear Research, Swierk, Poland
H. Bialkowska, M. Bluj, B. Boimska, T. Frueboes, M. G ´orski, M. Kazana, K. Nawrocki,K. Romanowska-Rybinska, M. Szleper, 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, M. Olszewski, W. Wolszczak
Laborat ´orio de Instrumenta¸c˜ao e F´ısica Experimental de Part´ıculas, Lisboa, Portugal
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, V. Karjavin, V. Konoplyanikov, A. Lanev,A. Malakhov, V. Matveev , P. Moisenz, V. Palichik, V. Perelygin, M. Savina, S. Shmatov,S. Shulha, N. Skatchkov, V. Smirnov, A. Zarubin Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
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, 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 A The CMS Collaboration
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 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. Dordevic, M. Ekmedzic, J. Milosevic Centro de Investigaciones Energ´eticas Medioambientales y Tecnol ´ogicas (CIEMAT),Madrid, Spain
J. Alcaraz Maestre, C. Battilana, E. Calvo, M. Cerrada, M. Chamizo Llatas , N. Colino, B. De LaCruz, A. Delgado Peris, D. Dom´ınguez V´azquez, A. Escalante Del Valle, C. Fernandez Bedoya,J.P. Fern´andez Ramos, 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, A. P´erez-Calero Yzquierdo,J. Puerta Pelayo, A. Quintario Olmeda, I. Redondo, L. Romero, M.S. Soares Universidad Aut ´onoma de Madrid, Madrid, Spain
C. Albajar, J.F. de Troc ´oniz, M. Missiroli
Universidad de Oviedo, Oviedo, Spain
H. Brun, J. Cuevas, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, L. LloretIglesias
Instituto de F´ısica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
J.A. Brochero Cifuentes, I.J. Cabrillo, A. Calderon, J. Duarte Campderros, M. Fernandez,G. Gomez, A. Graziano, A. Lopez Virto, J. Marco, R. Marco, C. Martinez Rivero, F. Matorras,F.J. Munoz Sanchez, J. Piedra Gomez, 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,A. Benaglia, J. Bendavid, L. Benhabib, 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,S. Colafranceschi , M. D’Alfonso, D. d’Enterria, A. Dabrowski, A. David, F. De Guio, A. DeRoeck, S. De Visscher, M. Dobson, N. Dupont-Sagorin, A. Elliott-Peisert, J. Eugster, G. Franzoni,W. Funk, M. Giffels, D. Gigi, K. Gill, D. Giordano, M. Girone, F. Glege, R. Guida, S. Gundacker,M. Guthoff, J. Hammer, M. Hansen, P. Harris, J. Hegeman, V. Innocente, P. Janot, K. Kousouris,K. Krajczar, P. Lecoq, C. Lourenc¸o, N. Magini, L. Malgeri, M. Mannelli, L. Masetti, F. Meijers,S. Mersi, E. Meschi, F. Moortgat, S. Morovic, M. Mulders, P. Musella, L. Orsini, L. Pape, E. Perez,L. Perrozzi, A. Petrilli, G. Petrucciani, A. Pfeiffer, M. Pierini, M. Pimi¨a, D. Piparo, M. Plagge,A. Racz, G. Rolandi , M. Rovere, H. Sakulin, C. Sch¨afer, C. Schwick, S. Sekmen, A. Sharma,P. Siegrist, P. Silva, M. Simon, P. Sphicas , D. Spiga, J. Steggemann, B. Stieger, M. Stoye,D. Treille, A. Tsirou, G.I. Veres , J.R. Vlimant, N. Wardle, H.K. W ¨ohri, W.D. Zeuner Paul Scherrer Institut, Villigen, Switzerland
W. Bertl, K. Deiters, W. Erdmann, 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, C. Grab, D. Hits,W. Lustermann, B. Mangano, A.C. Marini, P. Martinez Ruiz del Arbol, D. Meister, N. Mohr,C. N¨ageli , P. Nef, F. Nessi-Tedaldi, F. Pandolfi, F. Pauss, M. Peruzzi, M. Quittnat, L. Rebane,F.J. Ronga, M. Rossini, A. Starodumov , M. Takahashi, K. Theofilatos, R. Wallny, H.A. Weber Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , M.F. Canelli, V. Chiochia, A. De Cosa, A. Hinzmann, T. Hreus, M. Ivova Rikova,B. Kilminster, B. Millan Mejias, J. Ngadiuba, P. Robmann, H. Snoek, S. Taroni, M. Verzetti,Y. Yang National Central University, Chung-Li, Taiwan
M. Cardaci, K.H. Chen, C. Ferro, C.M. Kuo, W. Lin, Y.J. Lu, R. Volpe, S.S. Yu
National Taiwan University (NTU), Taipei, Taiwan
P. Chang, Y.H. Chang, Y.W. Chang, Y. Chao, K.F. Chen, P.H. Chen, C. Dietz, U. Grundler, W.-S. Hou, K.Y. Kao, Y.J. Lei, Y.F. Liu, R.-S. Lu, D. Majumder, E. Petrakou, X. Shi, Y.M. Tzeng,R. Wilken
Chulalongkorn University, Bangkok, Thailand
B. Asavapibhop, N. Srimanobhas, 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, B. Bilin, S. Bilmis, H. Gamsizkan, G. Karapinar , K. Ocalan, U.E. Surat, M. Yalvac,M. Zeyrek Bogazici University, Istanbul, Turkey
E. G ¨ulmez, B. Isildak , M. Kaya , O. Kaya Istanbul Technical University, Istanbul, Turkey
H. Bahtiyar , E. Barlas, K. Cankocak, 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, J. Jacob, L. Kreczko, C. Lucas, Z. Meng, D.M. Newbold , S. Paramesvaran, 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, C.H. Shepherd-Themistocleous, A. Thea, I.R. Tomalin,W.J. Womersley, S.D. Worm Imperial College, London, United Kingdom
M. Baber, R. Bainbridge, O. Buchmuller, D. Burton, D. Colling, N. Cripps, M. Cutajar,P. Dauncey, G. Davies, M. Della Negra, P. Dunne, W. Ferguson, J. Fulcher, D. Futyan, A. Gilbert, A The CMS Collaboration
G. Hall, G. Iles, M. Jarvis, G. Karapostoli, M. Kenzie, R. Lane, R. Lucas , L. Lyons, A.-M. Magnan, S. Malik, J. Marrouche, B. Mathias, J. Nash, A. Nikitenko , J. Pela, M. Pesaresi,K. Petridis, D.M. Raymond, S. Rogerson, A. Rose, C. Seez, P. Sharp † , A. Tapper, M. VazquezAcosta, T. Virdee Brunel University, Uxbridge, United Kingdom
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, C. Richardson, 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, J. Swanson
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, W. Ko, R. Lander, T. Miceli, M. Mulhearn,D. Pellett, J. Pilot, F. Ricci-Tam, M. Searle, S. Shalhout, J. Smith, M. Squires, D. Stolp, M. Tripathi,S. Wilbur, R. Yohay
University of California, Los Angeles, USA
R. Cousins, P. Everaerts, C. Farrell, J. Hauser, M. Ignatenko, G. Rakness, E. Takasugi, V. Valuev,M. Weber
University of California, Riverside, Riverside, USA
J. Babb, R. Clare, J. Ellison, J.W. Gary, G. Hanson, J. Heilman, P. Jandir, E. Kennedy, F. Lacroix,H. Liu, O.R. Long, A. Luthra, M. Malberti, H. Nguyen, A. Shrinivas, J. Sturdy, S. Sumowidagdo,S. Wimpenny
University of California, San Diego, La Jolla, USA
W. Andrews, J.G. Branson, G.B. Cerati, S. Cittolin, R.T. D’Agnolo, D. Evans, A. Holzner,R. Kelley, M. Lebourgeois, J. Letts, I. Macneill, D. Olivito, S. Padhi, C. Palmer, M. Pieri, M. Sani,V. Sharma, S. Simon, E. Sudano, M. Tadel, Y. Tu, A. Vartak, F. W ¨urthwein, A. Yagil, J. Yoo
University of California, Santa Barbara, Santa Barbara, USA
D. Barge, J. Bradmiller-Feld, C. Campagnari, T. Danielson, A. Dishaw, K. Flowers, M. FrancoSevilla, P. Geffert, C. George, F. Golf, J. Incandela, C. Justus, N. Mccoll, J. Richman, 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, A. Mott, H.B. Newman,C. Pena, C. Rogan, M. Spiropulu, V. Timciuc, R. Wilkinson, S. Xie, R.Y. Zhu Carnegie Mellon University, Pittsburgh, USA
V. Azzolini, A. Calamba, R. Carroll, T. Ferguson, Y. Iiyama, 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, J. Chu, S. Dittmer, N. Eggert, W. Hopkins, B. Kreis, N. Mirman,G. Nicolas Kaufman, J.R. Patterson, A. Ryd, E. Salvati, L. Skinnari, 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, H.W.K. Cheung, F. Chlebana, S. Cihangir, V.D. Elvira,I. Fisk, J. Freeman, E. Gottschalk, L. Gray, D. Green, S. Gr ¨unendahl, O. Gutsche, J. Hanlon,D. Hare, R.M. Harris, J. Hirschauer, B. Hooberman, S. Jindariani, M. Johnson, U. Joshi,K. Kaadze, B. Klima, S. Kwan, J. Linacre, D. Lincoln, R. Lipton, T. Liu, J. Lykken, K. Maeshima,J.M. Marraffino, V.I. Martinez Outschoorn, S. Maruyama, D. Mason, P. McBride, K. Mishra,S. Mrenna, Y. Musienko , S. Nahn, C. Newman-Holmes, V. O’Dell, O. Prokofyev, E. Sexton-Kennedy, S. Sharma, A. Soha, W.J. Spalding, L. Spiegel, L. Taylor, S. Tkaczyk, N.V. Tran,L. Uplegger, E.W. Vaandering, R. Vidal, A. Whitbeck, J. Whitmore, F. Yang University of Florida, Gainesville, USA
D. Acosta, P. Avery, D. Bourilkov, M. Carver, T. Cheng, D. Curry, S. Das, M. De Gruttola, G.P. DiGiovanni, R.D. Field, M. Fisher, I.K. Furic, J. Hugon, J. Konigsberg, A. Korytov, T. Kypreos,J.F. Low, K. Matchev, P. Milenovic , G. Mitselmakher, L. Muniz, A. Rinkevicius, L. Shchutska,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, B. Diamond, J. Haas, S. Hagopian, V. Hagopian, K.F. Johnson,H. Prosper, V. Veeraraghavan, M. Weinberg
Florida Institute of Technology, Melbourne, USA
M.M. Baarmand, M. Hohlmann, H. Kalakhety, F. Yumiceva
University of Illinois at Chicago (UIC), Chicago, USA
M.R. Adams, L. Apanasevich, V.E. Bazterra, D. Berry, R.R. Betts, I. Bucinskaite, R. Cavanaugh,O. Evdokimov, L. Gauthier, C.E. Gerber, D.J. Hofman, S. Khalatyan, P. Kurt, D.H. Moon,C. O’Brien, C. Silkworth, P. Turner, N. Varelas
The University of Iowa, Iowa City, USA
E.A. Albayrak , B. Bilki , W. Clarida, K. Dilsiz, F. Duru, M. Haytmyradov, J.-P. Merlo,H. Mermerkaya , A. Mestvirishvili, A. Moeller, J. Nachtman, H. Ogul, Y. Onel, F. Ozok ,A. Penzo, R. Rahmat, S. Sen, P. Tan, E. Tiras, J. Wetzel, T. Yetkin , K. Yi A The CMS Collaboration
Johns Hopkins University, Baltimore, USA
B.A. Barnett, B. Blumenfeld, S. Bolognesi, D. Fehling, A.V. Gritsan, P. Maksimovic, C. Martin,M. Swartz
The University of Kansas, Lawrence, USA
P. Baringer, A. Bean, G. Benelli, C. Bruner, J. Gray, R.P. Kenny III, M. Murray, D. Noonan,S. Sanders, J. Sekaric, R. Stringer, Q. Wang, J.S. Wood
Kansas State University, Manhattan, USA
A.F. Barfuss, I. Chakaberia, A. Ivanov, S. Khalil, M. Makouski, Y. Maravin, L.K. Saini,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. Skuja, M.B. Tonjes, S.C. Tonwar
Massachusetts Institute of Technology, Cambridge, USA
A. Apyan, R. Barbieri, G. Bauer, W. Busza, I.A. Cali, M. Chan, L. Di Matteo, V. Dutta, G. GomezCeballos, M. Goncharov, D. Gulhan, M. Klute, Y.S. Lai, Y.-J. Lee, A. Levin, P.D. Luckey, T. Ma,C. Paus, D. Ralph, C. Roland, G. Roland, G.S.F. Stephans, F. St ¨ockli, K. Sumorok, D. Velicanu,J. Veverka, B. Wyslouch, M. Yang, M. Zanetti, V. Zhukova
University of Minnesota, Minneapolis, USA
B. Dahmes, A. De Benedetti, A. Gude, S.C. Kao, K. Klapoetke, Y. Kubota, J. Mans, N. Pastika,R. Rusack, A. Singovsky, N. Tambe, J. Turkewitz
University of Mississippi, Oxford, USA
J.G. Acosta, S. Oliveros
University of Nebraska-Lincoln, Lincoln, USA
E. Avdeeva, K. Bloom, S. Bose, D.R. Claes, A. Dominguez, R. Gonzalez Suarez, J. Keller,D. Knowlton, 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, A. Kharchilava, A. Kumar, S. Rappoccio
Northeastern University, Boston, USA
G. Alverson, E. Barberis, D. Baumgartel, M. Chasco, J. Haley, A. Massironi, D.M. Morse,D. Nash, T. Orimoto, D. Trocino, D. Wood, J. Zhang
Northwestern University, Evanston, USA
K.A. Hahn, A. Kubik, 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
A. Brinkerhoff, K.M. Chan, A. Drozdetskiy, M. Hildreth, C. Jessop, D.J. Karmgard, N. Kellams,K. Lannon, W. Luo, S. Lynch, N. Marinelli, T. Pearson, M. Planer, R. Ruchti, N. Valls, M. Wayne,M. Wolf, A. Woodard
The Ohio State University, Columbus, USA
L. Antonelli, J. Brinson, B. Bylsma, L.S. Durkin, S. Flowers, C. Hill, R. Hughes, K. Kotov,T.Y. Ling, D. Puigh, M. Rodenburg, G. Smith, C. Vuosalo, B.L. Winer, H. Wolfe, H.W. Wulsin Princeton University, Princeton, USA
E. Berry, O. Driga, P. Elmer, P. Hebda, A. Hunt, S.A. Koay, P. Lujan, D. Marlow, T. Medvedeva,M. Mooney, J. Olsen, P. Pirou´e, X. Quan, H. Saka, D. Stickland , C. Tully, J.S. Werner, S.C. Zenz,A. Zuranski University of Puerto Rico, Mayaguez, USA
E. Brownson, H. Mendez, J.E. Ramirez Vargas
Purdue University, West Lafayette, USA
E. Alagoz, V.E. Barnes, D. Benedetti, G. Bolla, D. Bortoletto, M. De Mattia, A. Everett, Z. Hu,M.K. Jha, M. Jones, K. Jung, M. Kress, N. Leonardo, D. Lopes Pegna, V. Maroussov, P. Merkel,D.H. Miller, N. Neumeister, B.C. Radburn-Smith, I. Shipsey, D. Silvers, A. Svyatkovskiy,F. Wang, W. Xie, L. Xu, H.D. Yoo, J. Zablocki, Y. Zheng
Purdue University Calumet, Hammond, USA
N. Parashar, J. Stupak
Rice University, Houston, USA
A. Adair, B. Akgun, K.M. Ecklund, F.J.M. Geurts, W. Li, B. Michlin, 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, A. Khukhunaishvili, D.C. Miner, G. Petrillo,D. Vishnevskiy
The Rockefeller University, New York, USA
R. Ciesielski, L. Demortier, K. Goulianos, G. Lungu, 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, S. Salur, S. Schnetzer, C. Seitz, S. Somalwar, R. Stone, S. Thomas,P. Thomassen, M. Walker
University of Tennessee, Knoxville, USA
K. Rose, S. Spanier, A. York
Texas A&M University, College Station, USA
O. Bouhali , R. Eusebi, W. Flanagan, J. Gilmore, T. Kamon , V. Khotilovich, V. Krutelyov,R. Montalvo, I. Osipenkov, Y. Pakhotin, A. Perloff, J. Roe, A. Rose, A. Safonov, T. Sakuma,I. Suarez, A. Tatarinov Texas Tech University, Lubbock, USA
N. Akchurin, C. Cowden, J. Damgov, C. Dragoiu, P.R. Dudero, J. Faulkner, K. Kovitanggoon,S. Kunori, 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, H. Li, C. Lin,C. Neu, J. Wood A The CMS Collaboration
Wayne State University, Detroit, USA
S. Gollapinni, R. Harr, P.E. Karchin, C. Kottachchi Kankanamge Don, P. Lamichhane
University of Wisconsin, Madison, USA
D.A. Belknap, D. Carlsmith, M. Cepeda, S. Dasu, S. Duric, E. Friis, R. Hall-Wilton, M. Herndon,A. Herv´e, P. Klabbers, J. Klukas, A. Lanaro, C. Lazaridis, A. Levine, R. Loveless, A. Mohapatra,I. Ojalvo, T. Perry, G.A. Pierro, G. Polese, I. Ross, T. Sarangi, A. Savin, W.H. Smith, N. Woods † : 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 Suez University, Suez, Egypt10: Also at British University in Egypt, Cairo, Egypt11: Also at Fayoum University, El-Fayoum, Egypt12: Now at Ain Shams University, Cairo, Egypt13: Also at Universit´e de Haute Alsace, Mulhouse, France14: Also at Joint Institute for Nuclear Research, Dubna, Russia15: Also at Brandenburg University of Technology, Cottbus, Germany16: Also at The University of Kansas, Lawrence, USA17: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary18: Also at E ¨otv ¨os Lor´and University, Budapest, Hungary19: Also at University of Debrecen, Debrecen, Hungary20: Now at King Abdulaziz University, Jeddah, Saudi Arabia21: Also at University of Visva-Bharati, Santiniketan, India22: Also at University of Ruhuna, Matara, Sri Lanka23: Also at Isfahan University of Technology, Isfahan, Iran24: Also at Sharif University of Technology, Tehran, Iran25: Also at Plasma Physics Research Center, Science and Research Branch, Islamic AzadUniversity, Tehran, Iran26: Also at Universit`a degli Studi di Siena, Siena, Italy27: Also at Centre National de la Recherche Scientifique (CNRS) - IN2P3, Paris, France28: Also at Purdue University, West Lafayette, USA29: Also at Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Mexico30: Also at Institute for Nuclear Research, Moscow, Russia31: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia32: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia33: Also at Facolt`a Ingegneria, Universit`a di Roma, Roma, Italy34: Also at Scuola Normale e Sezione dell’INFN, Pisa, Italy35: Also at University of Athens, Athens, Greece36: Also at Paul Scherrer Institut, Villigen, Switzerland37: Also at Institute for Theoretical and Experimental Physics, Moscow, Russia38: Also at Albert Einstein Center for Fundamental Physics, Bern, Switzerland7