Search for B
0s!
þand B
0!
þDecays in pp Collisions at
p
ffiffiffi
s
¼ 7 TeV
S. Chatrchyan et al.* (CMS Collaboration)
(Received 29 July 2011; published 1 November 2011) A search for the rare decays B0
s! þ and B0! þ is performed in pp collisions at
ffiffiffi s p
¼ 7 TeV, with a data sample corresponding to an integrated luminosity of 1:14 fb1, collected by the CMS experiment at the LHC. In both cases, the number of events observed after all selection requirements is consistent with expectations from background and standard-model signal predictions. The resulting upper limits on the branching fractions areBðB0
s! þÞ < 1:9 108andBðB0! þÞ < 4:6 109,
at 95% confidence level.
DOI:10.1103/PhysRevLett.107.191802 PACS numbers: 13.20.He
In the standard model (SM) of particle physics, flavor-changing neutral current (FCNC) decays are forbidden at tree level and can only proceed through higher-order loop diagrams. The decays BdðsÞ! ‘þ‘ (where ‘ ¼ e; ), besides involving b ! sðdÞ FCNC transitions through pen-guin and box diagrams, are helicity suppressed by factors ofðm‘=mBÞ2, where m‘and mBare the masses of the lepton and B meson, respectively. They also require an internal quark annihilation within the B meson that further reduces the decay rate byðfB=mBÞ2, where fBis the decay constant of the B meson.
The SM-predicted branching fractions, BðB0
s !
þÞ ¼ ð3:2 0:2Þ 109 and BðB0 ! þÞ ¼ ð1:0 0:1Þ 1010[1], are significantly enhanced in sev-eral extensions of the SM, although in some cases the decay rates are lowered [2]. For example, in the minimal supersymmetric extension of the SM, the rates are strongly enhanced at large values of tan [3,4]. In specific models involving leptoquarks [5] and in supersymmetric models with nonuniversal Higgs boson masses [6], the B0
s !
þ and B0! þ branching fractions can be en-hanced by different factors and, therefore, both channels must be studied in parallel. Several experiments have published upper limits at 95% confidence level (C.L.) on these decays: BðB0 s! þÞ < 5:1 108 by D0 [7]; BðB0 s ! þÞ < 5:8 108 and BðB0 ! þÞ < 1:8 108 by CDF [8]; BðB0 s! þÞ < 5:6 108 and BðB0! þÞ < 1:5 108 by LHCb [9]. CDF recently reported a new limit ofBðB0 ! þÞ < 6:0 109and an excess of B0s ! þevents, corresponding toBðB0s ! þÞ ¼ ð1:8þ1:10:9Þ 108[10].
In this Letter, a simultaneous search for the B0
s !
þ and B0! þ decays is presented, using a
data sample of pp collisions atpffiffiffis¼ 7 TeV, correspond-ing to an integrated luminosity ofð1:14 0:07Þ fb1, col-lected in the first half of 2011 by the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC). An event-counting experiment is per-formed in dimuon mass regions around the B0
s and B0 masses. To avoid any possible bias, the signal region was kept blind until after all selection criteria were established. The backgrounds are evaluated from the yields measured in data mass sidebands and from Monte Carlo (MC) simu-lations for rare hadronic two-body B decays. The MC event samples are generated with PYTHIA 6.409 [11], the un-stable particles are decayed via EVTGEN [12], and the detector response is simulated with GEANT4 [13]. Events of the type Bþ ! J=cKþ; J=c ! þ are used as a normalization sample to minimize uncertainties related to the b b production cross section and to the integrated luminosity. The signal and normalization efficiencies are determined with MC simulation studies. A control sample of reconstructed B0
s ! J=c; J=c ! þ events is used to validate the MC simulation (such as the B0
s trans-verse momentum pT spectrum) and to evaluate potential effects resulting from differences in fragmentation be-tween Bþand B0
s. The analysis is not affected by multiple pp collisions in the same bunch crossing (pileup) because the spatial vertex resolution is good enough to correctly identify the pp vertex from which signal candidates origi-nate. In the present data set, an average of 5.5 primary vertices are reconstructed per event.
A detailed description of the CMS experiment can be found in Ref. [14]. The main subdetectors used in this analysis are the silicon tracker, composed of pixel and strip layers immersed in a 3.8 T axial magnetic field, and the muon stations, made of gas-ionization detectors embedded in the steel return yoke, and divided into a barrel section and two end caps. The muons are tracked within the pseudorapidity region jj < 2:4, where ¼ ln½tanð=2Þ and is the polar angle with respect to the counterclockwise beam direction. A muon pT resolu-tion of about 1.5% is obtained for muons in this analysis. *Full author list given at the end of the article.
Published by the American Physical Society under the terms of
the Creative Commons Attribution 3.0 License. Further
distri-bution of this work must maintain attridistri-bution to the author(s) and the published article’s title, journal citation, and DOI.
The events are selected with a two-level trigger system. The first level only requires two muon candidates, without an explicit pT requirement, while the high-level trigger (HLT) uses additional information from the silicon tracker. The HLT selection for the signal data sample requires two muons each with pT> 2 GeV, dimuon pT> 4 GeV, in-variant mass within 4:8 < m< 6:0 GeV, and a 3D dis-tance of closest approach to each other d0ca< 5 mm.
The normalization (Bþ! J=cKþ) and control (B0
s !
J=c) samples were collected with HLT requirements gradually tightened as the LHC luminosity increased. This time evolution does not affect the analysis presented here, which uses selection criteria significantly tighter than any trigger requirements. More than 95% of the normal-ization and control sample events were collected by requiring two muons each with pT> 3 GeV, dimuon pT > 6:9 GeV, invariant mass within 2:9 < m< 3:3 GeV, d0ca< 5 mm, and a larger than 0.5% probability of the 2 per degree of freedom (d.o.f.) of the dimuon vertex fit. Two additional trigger requirements, measured in the transverse plane, significantly reduce the rate of prompt J=c candi-dates: the significance of the flight distance ‘xy=ð‘xyÞ must be larger than 3, where ‘xy is the distance between the primary and dimuon vertices and ð‘xyÞ is its uncer-tainty, and the pointing angle xybetween the B candidate momentum and the vector from the primary vertex to the dimuon vertex must fulfill cosxy> 0:9. The average trig-ger efficiency, calculated after all other selection criteria have been applied, for events in the signal and normaliza-tion samples is about 80%, as determined from MC simu-lation. The uncertainty on the ratio of trigger efficiencies between the signal and normalization samples is estimated to be 2% by comparing these ratios in simulation studies and in data.
Muon candidates are required to be reconstructed by two different algorithms, one matching silicon-tracker tracks to segments in the muon stations and the other performing global fits using tracks in both detector systems [15]. The uncertainty on the ratio of muon identification efficiencies between the signal and normalization samples is estimated to be 5%.
The B ! þ candidates require two oppositely charged muons with an invariant mass in the region 4:9 < m< 5:9 GeV, after constraining their tracks to come from a common vertex. The B candidate momentum and vertex position are used to choose a primary vertex based on the distance of closest approach. Since the background level depends significantly on the pseudorapidity of the B candidate, the events are separated into two categories: the ‘‘barrel channel’’ contains the candidates where both muons havejj < 1:4 and the ‘‘end cap channel’’ contains those where at least one muon hasjj > 1:4. An isolation variable I ¼ pTðBÞ=ðpTðBÞ þ
P
trkpTÞ is calculated from the transverse momentum of the B candidate pTðBÞ and the transverse momenta of all other charged tracks satisfying
R ¼pffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiðÞ2þ ðÞ2< 1, where and are the differences in pseudorapidity and azimuthal angle between a charged track and the B candidate momentum. The sum includes all tracks with pT> 0:9 GeV that are consistent with originating from the same primary vertex as the B candidate or have a distance of closest approach dca< 0:5 mm with respect to the B vertex. The minimum dis-tance of closest approach with respect to the B vertex among all tracks in the event, dmin
ca , is also determined as a complementary isolation variable. Figure1illustrates the transverse momentum, the 3D pointing angle 3D, the 3D flight length significance ‘3D=ð‘3DÞ, and the isolation distributions for signal MC events and for sideband back-ground data events. The sideband covers the range 4:9 < m< 5:9 GeV, excluding the signal window 5:2 < m< 5:45 GeV.
The following selection requirements were optimized for the best expected upper limit using MC signal events and data sideband events. The requirements were estab-lished before observing the number of data events in the signal region. The optimized requirements include pT> 4:5 GeV on one muon and pT> 4:0 GeV on the other, B candidate pT> 6:5 GeV, I > 0:75, and B-vertex fit 2=d:o:f: < 1:6. Two requirements are different for the barrel and end cap channels: 3D< 0:050 (0.025) and
(B) [GeV] T p 0 10 20 30 40 50 Candidates / 2.5 GeV 10 20 30 40 Data (sideband) (MC) -µ + µ → 0 s B -1 CMS, 1.14 fb s = 7 TeV 3D α 0 0.05 0.1 0.15 0.2 Candidates 100 200 300 400 500 Data (sideband) (MC) -µ + µ → 0 s B -1 CMS, 1.14 fb s = 7 TeV ) 3D (l σ / 3D l 0 20 40 60 80 100 Candidates -1 10 1 10 2 10 3 10 4 10 Data (sideband) (MC) -µ + µ → 0 s B -1 CMS, 1.14 fb s = 7 TeV isolation 0 0.2 0.4 0.6 0.8 1 Candidates 50 100 150 200 Data (sideband) (MC) -µ + µ → 0 s B -1 CMS, 1.14 fb s = 7 TeV
FIG. 1 (color online). Comparison of MC signal and sideband data distributions, for the transverse momentum (top left), the 3D pointing angle (top right), the flight length significance (bottom left), and the isolation (bottom right). The MC histograms are normalized to the number of events in the data.
‘3D=ð‘3dÞ > 15:0 (20.0) for the barrel (end cap). Furthermore, for events in the end cap there is an additional requirement, dmin
ca > 0:15 mm. The signal efficiencies "tot of these selections are provided in Table I. The dimuon mass resolution for signal events depends on the pseudor-apidity of the B candidate and ranges from 36 MeV for 0 to 85 MeV for jj > 1:8, as determined from simu-lated signal.
The reconstruction of Bþ! J=cKþ ! þK (B0
s ! J=c ! þKþK) candidates requires two oppositely charged muons with an invariant mass in the range 3.0–3.2 GeV, which are combined with one (two) track(s), assumed to be (a) kaon(s), fulfilling pT > 0:5 GeV and jj < 2:4. To ensure a well-measured trigger efficiency, the selected candidates must have dimuon pT > 7 GeV and the two muons must bend away from each other in the magnetic field (to avoid spurious detector-induced pair correlations). The d0ca between all pairs among the three (four) tracks is required to be less than 1 mm. For B0s ! J=c candidates the two assumed kaon tracks must have an invariant mass in the range 0.995–1.045 GeV and RðKþ; KÞ < 0:25. The tracks from all decay products are used in the B-vertex fit and only B candidates with an invariant mass in the range 4.8–6.0 GeV are considered. The efficiencies of individual selection criteria agree to better than 4% (6%) between data and MC simulation for the normalization (control) sample, where the efficiencies have been calculated for each selection requirement with event yield fits after applying all other selection criteria. Figure 2 compares several distributions for B0
s! J=c candidates between MC simulation and sideband-subtracted data.
The total efficiency for Bþ ! J=cKþ! þKþ, including the detector acceptance, is "Bþ
tot ¼ ð7:7 0:8Þ 104 and ð2:7 0:3Þ 104, respectively, for the barrel and end cap channels, where statistical and systematic uncertainties are combined. The acceptance has a system-atic uncertainty of 4%, estimated by comparing the values obtained with different b b production mechanisms (gluon splitting, flavor excitation, and flavor creation). The uncer-tainty on the event selection efficiency for the Bþ ! J=cKþ normalization sample is 4%, evaluated from
differences between measured and simulated Bþ! J=cKþ events. The uncertainty on the signal efficiency (7.9%) is evaluated using the B0s ! J=c control sample. The invariant mass distributions are fitted with a Gaussian function for the signal and an exponential (barrel) or a first-degree polynomial (end cap) plus an error function for the background, as shown in Fig.3. Applying the same selec-tion requirements as for the signal sample, the observed number of Bþ! J=cKþ candidates in the barrel (end cap) channel is NobsBþ ¼ 13 045 652 (4450 222). The uncertainty includes a systematic term estimated to TABLE I. The event selection efficiencies for signal events "tot, the SM-predicted number of signal events Nsignalexp , the expected
number of combinatorial background events Ncombexp and peaking background events N exp
peak, and the number of observed events Nobsin
the barrel and end cap channels for B0
s ! þ and B0! þ.
Barrel End cap
B0! þ B0 s! þ B0! þ B0s! þ "tot ð3:6 0:4Þ 103 ð3:6 0:4Þ 103 ð2:1 0:2Þ 103 ð2:1 0:2Þ 103 Nsignalexp 0:065 0:011 0:80 0:16 0:025 0:004 0:36 0:07 Ncombexp 0:40 0:23 0:60 0:35 0:53 0:27 0:80 0:40 Npeakexp 0:25 0:06 0:07 0:02 0:16 0:04 0:04 0:01 Nobs 0 2 1 1 (B) [GeV] T p 0 10 20 30 40 50 Candidates / 2.5 GeV 200 400 600 800 Data (MC) φ ψ J/ → 0 s B -1 CMS, 1.14 fb s = 7 TeV 3D α 0 0.05 0.1 0.15 0.2 Candidates 500 1000 1500 2000 Data (MC) φ ψ J/ → 0 s B -1 CMS, 1.14 fb s = 7 TeV ) 3D (l σ / 3D l 0 20 40 60 80 100 Candidates 200 400 600 Data (MC) φ ψ J/ → 0 s B -1 CMS, 1.14 fb s = 7 TeV isolation 0 0.2 0.4 0.6 0.8 1 Candidates 500 1000 1500 Data (MC) φ ψ J/ → 0 s B -1 CMS, 1.14 fb s = 7 TeV
FIG. 2 (color online). Comparison of measured and simulated B0
s! J=c distributions, for the transverse momentum (top
left), the 3D pointing angle (top right), the flight length signifi-cance (bottom left), and the isolation (bottom right). The MC histograms are normalized to the number of events in the data.
be 5% from MC studies by considering alternative fitting functions.
To quantify a possible dependence on the pileup, the efficiencies of the isolation and the flight length signifi-cance requirements are calculated as functions of the num-ber of reconstructed primary vertices. No dependence is observed for events with up to 12 primary vertices for the normalization and control samples.
The B0
s ! þbranching fraction is measured sepa-rately in the barrel and end cap channels using
B ðB0 s ! þÞ ¼ NS NobsBþ fu fs "Btotþ "tot BðBþÞ; (1) and analogously for the B0! þcase, where NSis the background-subtracted number of observed BdðsÞ ! þ candidates in the signal window (5:3 < m< 5:45 GeV for B0
s and 5:2 < m< 5:3 GeV for B0) and "tot is the total signal efficiency of all selection require-ments. The ratio of the B0
s and Bþ meson production fractions is fs=fu¼ 0:282 0:037 and BðBþÞ BðBþ! J=cKþ! þKþÞ ¼ ð6:00:2Þ105 [16]. (We use fs¼ 0:113 0:013 and fu¼ 0:401 0:013 from the main section of Ref. [16] and account for the correlations in the ratio.)
Events in the signal window can result from real signal decays, combinatorial background, and ‘‘peaking’’ back-ground from decays of the type BdðsÞ ! hh0, where h; h0 are charged hadrons misidentified as muons. The expected number of signal events, Nexpsignal, is calculated assuming the SM branching fraction and is normalized to the Bþyield. The expected number of combinatorial background events, Ncombexp , is evaluated by interpolating to the signal window the number of events observed in the sideband regions which is equal to three (four) for the barrel (end cap) channel. The interpolation procedure assumes a flat back-ground shape and has a systematic uncertainty of 4%, evaluated by varying the flight length significance selec-tions and by using a floating slope. The expected number of
peaking background events, Nexppeak, is evaluated from MC simulation and muon misidentification rates measured in K0
S! þ , ! KþK, and ! p samples [15]. Figure 4 shows the measured dimuon invariant mass distributions. Three events are observed in the B0s! þ signal windows (two in the barrel and one in the end cap), while only one event is observed in the B0! þ end cap channel. This observation is consistent with the SM expectation for signal plus background. Upper limits are determined with the CLs approach [17]. Table Ishows the values needed for the extraction of the results, separately for the barrel and end cap channels. The obtained upper limits on the branching fractions are BðB0
s! þÞ < 1:9 108(1:6 108) andBðB0! þÞ < 4:6 109 (3:7 109), at 95% (90%) C.L. The median expected upper limits at 95% C.L. are 1:8 108 (4:8 109) for B0
s ! þ (B0! þ). The background-only p value is 0.11 (0.40) for B0
s ! þ (B0 ! þ), corresponding to 1.2 (0.27) standard devi-ations. The p value is 0.053 when assuming a B0
s ! þ signal at 5.6 times the SM value, as reported in Ref. [10].
In summary, a search for the rare decays B0
s ! þ and B0! þhas been performed on a data sample of pp collisions at pffiffiffis¼ 7 TeV corresponding to an inte-grated luminosity of 1:14 fb1. The observed event yields are consistent with those expected adding background and SM signals. Upper limits on the branching fractions have been determined at 90% and 95% C.L.
We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administra-tive staff at CERN and other CMS institutes, and acknowl-edge support from FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, MEC, and HIP [GeV] K µ µ m 5 5.1 5.2 5.3 5.4 5.5 5.6 Candidates / 0.010 GeV 500 1000 1500 Barrel -1 CMS, 1.14 fb s = 7 TeV [GeV] K µ µ m 5 5.1 5.2 5.3 5.4 5.5 5.6 Candidates / 0.010 GeV 100 200 300 End cap -1 CMS, 1.14 fb s = 7 TeV
FIG. 3 (color online). Bþ! J=c Kþ invariant mass distribu-tions in the barrel (left) and end cap (right) channels. The solid (dashed) lines show the fits to the data (background).
[GeV] µ µ m 5 5.2 5.4 5.6 5.8 Candidates / 0.025 GeV 1 2 signal window 0 s B signal window 0 B Barrel -1 CMS, 1.14 fb s = 7 TeV [GeV] µ µ m 5 5.2 5.4 5.6 5.8 Candidates / 0.025 GeV 1 2 signal window 0 s B signal window 0 B End cap -1 CMS, 1.14 fb s = 7 TeV
FIG. 4 (color online). Dimuon invariant mass distributions in the barrel (left) and end cap (right) channels. The signal windows for B0
s and B0are indicated by horizontal lines.
(Finland); CEA andCNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST, MAE and RFBR (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (U.S.).
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S. Chatrchyan,1V. Khachatryan,1A. M. Sirunyan,1A. Tumasyan,1W. Adam,2T. Bergauer,2M. Dragicevic,2J. Ero¨,2 C. Fabjan,2M. Friedl,2R. Fru¨hwirth,2V. M. Ghete,2J. Hammer,2,bS. Ha¨nsel,2M. Hoch,2N. Ho¨rmann,2J. Hrubec,2 M. Jeitler,2W. Kiesenhofer,2M. Krammer,2D. Liko,2I. Mikulec,2M. Pernicka,2B. Rahbaran,2H. Rohringer,2 R. Scho¨fbeck,2J. Strauss,2A. Taurok,2F. Teischinger,2C. Trauner,2P. Wagner,2W. Waltenberger,2G. Walzel,2 E. Widl,2C.-E. Wulz,2V. Mossolov,3N. Shumeiko,3J. Suarez Gonzalez,3S. Bansal,4L. Benucci,4E. A. De Wolf,4
X. Janssen,4S. Luyckx,4T. Maes,4L. Mucibello,4S. Ochesanu,4B. Roland,4R. Rougny,4M. Selvaggi,4 H. Van Haevermaet,4P. Van Mechelen,4N. Van Remortel,4F. Blekman,5S. Blyweert,5J. D’Hondt,5 R. Gonzalez Suarez,5A. Kalogeropoulos,5M. Maes,5A. Olbrechts,5W. Van Doninck,5P. Van Mulders,5 G. P. Van Onsem,5I. Villella,5O. Charaf,6B. Clerbaux,6G. De Lentdecker,6V. Dero,6A. P. R. Gay,6G. H. Hammad,6
T. Hreus,6P. E. Marage,6A. Raval,6L. Thomas,6G. Vander Marcken,6C. Vander Velde,6P. Vanlaer,6V. Adler,7 A. Cimmino,7S. Costantini,7M. Grunewald,7B. Klein,7J. Lellouch,7A. Marinov,7J. Mccartin,7D. Ryckbosch,7
F. Thyssen,7M. Tytgat,7L. Vanelderen,7P. Verwilligen,7S. Walsh,7N. Zaganidis,7S. Basegmez,8G. Bruno,8 J. Caudron,8L. Ceard,8E. Cortina Gil,8J. De Favereau De Jeneret,8C. Delaere,8D. Favart,8A. Giammanco,8
G. Gre´goire,8J. Hollar,8V. Lemaitre,8J. Liao,8O. Militaru,8C. Nuttens,8S. Ovyn,8D. Pagano,8A. Pin,8 K. Piotrzkowski,8N. Schul,8N. Beliy,9T. Caebergs,9E. Daubie,9G. A. Alves,10L. Brito,10D. De Jesus Damiao,10
M. E. Pol,10M. H. G. Souza,10W. L. Alda´ Ju´nior,11W. Carvalho,11E. M. Da Costa,11C. De Oliveira Martins,11 S. Fonseca De Souza,11D. Matos Figueiredo,11L. Mundim,11H. Nogima,11V. Oguri,11W. L. Prado Da Silva,11 A. Santoro,11S. M. Silva Do Amaral,11A. Sznajder,11C. A. Bernardes,12,cF. A. Dias,12,dT. Dos Anjos Costa,12,c T. R. Fernandez Perez Tomei,12E. M. Gregores,12,cC. Lagana,12F. Marinho,12P. G. Mercadante,12,cS. F. Novaes,12
Sandra S. Padula,12N. Darmenov,13,bV. Genchev,13,bP. Iaydjiev,13,bS. Piperov,13M. Rodozov,13S. Stoykova,13 G. Sultanov,13V. Tcholakov,13R. Trayanov,13M. Vutova,13A. Dimitrov,14R. Hadjiiska,14A. Karadzhinova,14
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A. Tiko,24V. Azzolini,25P. Eerola,25G. Fedi,25M. Voutilainen,25S. Czellar,26J. Ha¨rko¨nen,26A. Heikkinen,26 V. Karima¨ki,26R. Kinnunen,26M. J. Kortelainen,26T. Lampe´n,26K. Lassila-Perini,26S. Lehti,26T. Linde´n,26
P. Luukka,26T. Ma¨enpa¨a¨,26E. Tuominen,26J. Tuominiemi,26E. Tuovinen,26D. Ungaro,26L. Wendland,26 K. Banzuzi,27A. Karjalainen,27A. Korpela,27T. Tuuva,27D. Sillou,28M. Besancon,29S. Choudhury,29 M. Dejardin,29D. Denegri,29B. Fabbro,29J. L. Faure,29F. Ferri,29S. Ganjour,29F. X. Gentit,29A. Givernaud,29
P. Gras,29G. Hamel de Monchenault,29P. Jarry,29E. Locci,29J. Malcles,29M. Marionneau,29L. Millischer,29 J. Rander,29A. Rosowsky,29I. Shreyber,29M. Titov,29P. Verrecchia,29S. Baffioni,30F. Beaudette,30L. Benhabib,30
L. Bianchini,30M. Bluj,30,jC. Broutin,30P. Busson,30C. Charlot,30T. Dahms,30L. Dobrzynski,30S. Elgammal,30 R. Granier de Cassagnac,30M. Haguenauer,30P. Mine´,30C. Mironov,30C. Ochando,30P. Paganini,30D. Sabes,30
R. Salerno,30Y. Sirois,30C. Thiebaux,30B. Wyslouch,30,kA. Zabi,30J.-L. Agram,31,lJ. Andrea,31D. Bloch,31 D. Bodin,31J.-M. Brom,31M. Cardaci,31E. C. Chabert,31C. Collard,31E. Conte,31,lF. Drouhin,31,lC. Ferro,31 J.-C. Fontaine,31,lD. Gele´,31U. Goerlach,31S. Greder,31P. Juillot,31M. Karim,31,lA.-C. Le Bihan,31Y. Mikami,31
P. Van Hove,31F. Fassi,32D. Mercier,32C. Baty,33S. Beauceron,33N. Beaupere,33M. Bedjidian,33O. Bondu,33 G. Boudoul,33D. Boumediene,33H. Brun,33J. Chasserat,33R. Chierici,33D. Contardo,33P. Depasse,33 H. El Mamouni,33J. Fay,33S. Gascon,33B. Ille,33T. Kurca,33T. Le Grand,33M. Lethuillier,33L. Mirabito,33
S. Perries,33V. Sordini,33S. Tosi,33Y. Tschudi,33P. Verdier,33S. Viret,33D. Lomidze,34G. Anagnostou,35 S. Beranek,35M. Edelhoff,35L. Feld,35N. Heracleous,35O. Hindrichs,35R. Jussen,35K. Klein,35J. Merz,35 N. Mohr,35A. Ostapchuk,35A. Perieanu,35F. Raupach,35J. Sammet,35S. Schael,35D. Sprenger,35H. Weber,35
M. Weber,35B. Wittmer,35M. Ata,36E. Dietz-Laursonn,36M. Erdmann,36T. Hebbeker,36C. Heidemann,36 A. Hinzmann,36K. Hoepfner,36T. Klimkovich,36D. Klingebiel,36P. Kreuzer,36D. Lanske,36,aJ. Lingemann,36
C. Magass,36M. Merschmeyer,36A. Meyer,36P. Papacz,36H. Pieta,36H. Reithler,36S. A. Schmitz,36 L. Sonnenschein,36J. Steggemann,36D. Teyssier,36M. Bontenackels,37V. Cherepanov,37M. Davids,37M. Duda,37 G. Flu¨gge,37H. Geenen,37M. Giffels,37W. Haj Ahmad,37D. Heydhausen,37F. Hoehle,37B. Kargoll,37T. Kress,37
Y. Kuessel,37A. Linn,37A. Nowack,37L. Perchalla,37O. Pooth,37J. Rennefeld,37P. Sauerland,37A. Stahl,37 D. Tornier,37M. H. Zoeller,37M. Aldaya Martin,38W. Behrenhoff,38U. Behrens,38M. Bergholz,38,mA. Bethani,38 K. Borras,38A. Cakir,38A. Campbell,38E. Castro,38D. Dammann,38G. Eckerlin,38D. Eckstein,38A. Flossdorf,38
G. Flucke,38A. Geiser,38J. Hauk,38H. Jung,38,bM. Kasemann,38P. Katsas,38C. Kleinwort,38H. Kluge,38 A. Knutsson,38M. Kra¨mer,38D. Kru¨cker,38E. Kuznetsova,38W. Lange,38W. Lohmann,38,mR. Mankel,38 M. Marienfeld,38I.-A. Melzer-Pellmann,38A. B. Meyer,38J. Mnich,38A. Mussgiller,38J. Olzem,38A. Petrukhin,38
D. Pitzl,38A. Raspereza,38M. Rosin,38R. Schmidt,38,mT. Schoerner-Sadenius,38N. Sen,38A. Spiridonov,38 M. Stein,38J. Tomaszewska,38R. Walsh,38C. Wissing,38C. Autermann,39V. Blobel,39S. Bobrovskyi,39J. Draeger,39
H. Enderle,39U. Gebbert,39M. Go¨rner,39T. Hermanns,39K. Kaschube,39G. Kaussen,39H. Kirschenmann,39 R. Klanner,39J. Lange,39B. Mura,39S. Naumann-Emme,39F. Nowak,39N. Pietsch,39C. Sander,39H. Schettler,39 P. Schleper,39E. Schlieckau,39M. Schro¨der,39T. Schum,39H. Stadie,39G. Steinbru¨ck,39J. Thomsen,39C. Barth,40
J. Bauer,40J. Berger,40V. Buege,40T. Chwalek,40W. De Boer,40A. Dierlamm,40G. Dirkes,40M. Feindt,40 J. Gruschke,40C. Hackstein,40F. Hartmann,40M. Heinrich,40H. Held,40K. H. Hoffmann,40S. Honc,40I. Katkov,40,n
J. R. Komaragiri,40T. Kuhr,40D. Martschei,40S. Mueller,40Th. Mu¨ller,40M. Niegel,40O. Oberst,40A. Oehler,40 J. Ott,40T. Peiffer,40G. Quast,40K. Rabbertz,40F. Ratnikov,40N. Ratnikova,40M. Renz,40C. Saout,40A. Scheurer,40 P. Schieferdecker,40F.-P. Schilling,40G. Schott,40H. J. Simonis,40F. M. Stober,40D. Troendle,40J. Wagner-Kuhr,40 T. Weiler,40M. Zeise,40V. Zhukov,40,nE. B. Ziebarth,40G. Daskalakis,41T. Geralis,41S. Kesisoglou,41A. Kyriakis,41
D. Loukas,41I. Manolakos,41A. Markou,41C. Markou,41C. Mavrommatis,41E. Ntomari,41E. Petrakou,41 L. Gouskos,42T. J. Mertzimekis,42A. Panagiotou,42N. Saoulidou,42E. Stiliaris,42I. Evangelou,43C. Foudas,43 P. Kokkas,43N. Manthos,43I. Papadopoulos,43V. Patras,43F. A. Triantis,43A. Aranyi,44G. Bencze,44L. Boldizsar,44
C. Hajdu,44,bP. Hidas,44D. Horvath,44,oA. Kapusi,44K. Krajczar,44,pF. Sikler,44,bG. I. Veres,44,p
G. Vesztergombi,44,pN. Beni,45J. Molnar,45J. Palinkas,45Z. Szillasi,45V. Veszpremi,45P. Raics,46Z. L. Trocsanyi,46 B. Ujvari,46S. B. Beri,47V. Bhatnagar,47N. Dhingra,47R. Gupta,47M. Jindal,47M. Kaur,47J. M. Kohli,47 M. Z. Mehta,47N. Nishu,47L. K. Saini,47A. Sharma,47A. P. Singh,47J. Singh,47S. P. Singh,47S. Ahuja,48 B. C. Choudhary,48P. Gupta,48A. Kumar,48A. Kumar,48S. Malhotra,48M. Naimuddin,48K. Ranjan,48 R. K. Shivpuri,48S. Banerjee,49S. Bhattacharya,49S. Dutta,49B. Gomber,49S. Jain,49S. Jain,49R. Khurana,49 S. Sarkar,49R. K. Choudhury,50D. Dutta,50S. Kailas,50V. Kumar,50P. Mehta,50A. K. Mohanty,50,bL. M. Pant,50 P. Shukla,50T. Aziz,51M. Guchait,51,qA. Gurtu,51M. Maity,51,rD. Majumder,51G. Majumder,51K. Mazumdar,51
G. B. Mohanty,51A. Saha,51K. Sudhakar,51N. Wickramage,51S. Banerjee,52S. Dugad,52N. K. Mondal,52 H. Arfaei,53H. Bakhshiansohi,53,sS. M. Etesami,53,tA. Fahim,53,sM. Hashemi,53H. Hesari,53A. Jafari,53,s M. Khakzad,53A. Mohammadi,53,uM. Mohammadi Najafabadi,53S. Paktinat Mehdiabadi,53B. Safarzadeh,53
M. Zeinali,53,tM. Abbrescia,54a,54bL. Barbone,54a,54bC. Calabria,54a,54bA. Colaleo,54aD. Creanza,54a,54c N. De Filippis,54a,54c,bM. De Palma,54a,54bL. Fiore,54aG. Iaselli,54a,54cL. Lusito,54a,54bG. Maggi,54a,54c M. Maggi,54aN. Manna,54a,54bB. Marangelli,54a,54bS. My,54a,54cS. Nuzzo,54a,54bN. Pacifico,54a,54bG. A. Pierro,54a
A. Pompili,54a,54bG. Pugliese,54a,54cF. Romano,54a,54cG. Roselli,54a,54bG. Selvaggi,54a,54bL. Silvestris,54a R. Trentadue,54aS. Tupputi,54a,54bG. Zito,54aG. Abbiendi,55aA. C. Benvenuti,55aD. Bonacorsi,55a S. Braibant-Giacomelli,55a,55bL. Brigliadori,55aP. Capiluppi,55a,55bA. Castro,55a,55bF. R. Cavallo,55a M. Cuffiani,55a,55bG. M. Dallavalle,55aF. Fabbri,55aA. Fanfani,55a,55bD. Fasanella,55aP. Giacomelli,55a
M. Giunta,55aC. Grandi,55aS. Marcellini,55aG. Masetti,55bM. Meneghelli,55a,55bA. Montanari,55a F. L. Navarria,55a,55bF. Odorici,55aA. Perrotta,55aF. Primavera,55aA. M. Rossi,55a,55bT. Rovelli,55a,55b G. Siroli,55a,55bR. Travaglini,55a,55bS. Albergo,56a,56bG. Cappello,56a,56bM. Chiorboli,56a,56b,bS. Costa,56a,56b
R. Potenza,56a,56bA. Tricomi,56a,56bC. Tuve,56a,56bG. Barbagli,57aV. Ciulli,57a,57bC. Civinini,57a R. D’Alessandro,57a,57bE. Focardi,57a,57bS. Frosali,57a,57bE. Gallo,57aS. Gonzi,57a,57bP. Lenzi,57a,57b M. Meschini,57aS. Paoletti,57aG. Sguazzoni,57aA. Tropiano,57a,bL. Benussi,58S. Bianco,58S. Colafranceschi,58,v
F. Fabbri,58D. Piccolo,58P. Fabbricatore,59R. Musenich,59A. Benaglia,60a,60bF. De Guio,60a,60b,b L. Di Matteo,60a,60bS. Gennai,60a,bA. Ghezzi,60a,60bS. Malvezzi,60aA. Martelli,60a,60bA. Massironi,60a,60b D. Menasce,60aL. Moroni,60aM. Paganoni,60a,60bD. Pedrini,60aS. Ragazzi,60a,60bN. Redaelli,60aS. Sala,60a T. Tabarelli de Fatis,60a,60bS. Buontempo,61aC. A. Carrillo Montoya,61a,bN. Cavallo,61a,wA. De Cosa,61a,61b
F. Fabozzi,61a,wA. O. M. Iorio,61a,bL. Lista,61aM. Merola,61a,61bP. Paolucci,61aP. Azzi,62aN. Bacchetta,62a P. Bellan,62a,62bD. Bisello,62a,62bA. Branca,62aR. Carlin,62a,62bP. Checchia,62aT. Dorigo,62aU. Dosselli,62a F. Fanzago,62aF. Gasparini,62a,62bU. Gasparini,62a,62bA. Gozzelino,62aS. Lacaprara,62aI. Lazzizzera,62a,62c M. Margoni,62a,62bM. Mazzucato,62aA. T. Meneguzzo,62a,62bM. Nespolo,62a,bL. Perrozzi,62a,bN. Pozzobon,62a,62b
P. Ronchese,62a,62bF. Simonetto,62a,62bE. Torassa,62aM. Tosi,62a,62bS. Vanini,62a,62bP. Zotto,62a,62b G. Zumerle,62a,62bP. Baesso,63a,63bU. Berzano,63aS. P. Ratti,63a,63bC. Riccardi,63a,63bP. Torre,63a,63bP. Vitulo,63a,63b
C. Viviani,63a,63bM. Biasini,64a,64bG. M. Bilei,64aB. Caponeri,64a,64bL. Fano`,64a,64bP. Lariccia,64a,64b A. Lucaroni,64a,64b,bG. Mantovani,64a,64bM. Menichelli,64aA. Nappi,64a,64bF. Romeo,64a,64bA. Santocchia,64a,64b
S. Taroni,64a,64b,bM. Valdata,64a,64bP. Azzurri,65a,65cG. Bagliesi,65aJ. Bernardini,65a,65bT. Boccali,65a G. Broccolo,65a,65cR. Castaldi,65aR. T. D’Agnolo,65a,65cR. Dell’Orso,65aF. Fiori,65a,65bL. Foa`,65a,65cA. Giassi,65a
A. Kraan,65aF. Ligabue,65a,65cT. Lomtadze,65aL. Martini,65a,xA. Messineo,65a,65bF. Palla,65aF. Palmonari,65a G. Segneri,65aA. T. Serban,65aP. Spagnolo,65aR. Tenchini,65aG. Tonelli,65a,65b,bA. Venturi,65a,bP. G. Verdini,65a L. Barone,66a,66bF. Cavallari,66aD. Del Re,66a,66bE. Di Marco,66a,66bM. Diemoz,66aD. Franci,66a,66bM. Grassi,66a,b
E. Longo,66a,66bP. Meridiani,66aS. Nourbakhsh,66aG. Organtini,66a,66bF. Pandolfi,66a,66b,bR. Paramatti,66a S. Rahatlou,66a,66bM. Sigamani,66aN. Amapane,67a,67bR. Arcidiacono,67a,67cS. Argiro,67a,67bM. Arneodo,67a,67c C. Biino,67aC. Botta,67a,67b,bN. Cartiglia,67aR. Castello,67a,67bM. Costa,67a,67bN. Demaria,67aA. Graziano,67a,67b,b
C. Mariotti,67aS. Maselli,67aE. Migliore,67a,67bV. Monaco,67a,67bM. Musich,67aM. M. Obertino,67a,67c N. Pastrone,67aM. Pelliccioni,67a,67bA. Potenza,67a,67bA. Romero,67a,67bM. Ruspa,67a,67cR. Sacchi,67a,67b
V. Sola,67a,67bA. Solano,67a,67bA. Staiano,67aA. Vilela Pereira,67aS. Belforte,68aF. Cossutti,68a
G. Della Ricca,68a,68bB. Gobbo,68aM. Marone,68a,68bD. Montanino,68a,68bA. Penzo,68aS. G. Heo,69S. K. Nam,69 S. Chang,70J. Chung,70D. H. Kim,70G. N. Kim,70J. E. Kim,70D. J. Kong,70H. Park,70S. R. Ro,70D. C. Son,70 T. Son,70J. Y. Kim,71Zero J. Kim,71S. Song,71H. Y. Jo,72S. Choi,73D. Gyun,73B. Hong,73M. Jo,73H. Kim,73 J. H. Kim,73T. J. Kim,73K. S. Lee,73D. H. Moon,73S. K. Park,73E. Seo,73K. S. Sim,73M. Choi,74S. Kang,74 H. Kim,74C. Park,74I. C. Park,74S. Park,74G. Ryu,74Y. Cho,75Y. Choi,75Y. K. Choi,75J. Goh,75M. S. Kim,75
B. Lee,75J. Lee,75S. Lee,75H. Seo,75I. Yu,75M. J. Bilinskas,76I. Grigelionis,76M. Janulis,76D. Martisiute,76 P. Petrov,76M. Polujanskas,76T. Sabonis,76H. Castilla-Valdez,77E. De La Cruz-Burelo,77I. Heredia-de La Cruz,77
R. Lopez-Fernandez,77R. Magan˜a Villalba,77J. Martı´nez-Ortega,77A. Sa´nchez-Herna´ndez,77 L. M. Villasenor-Cendejas,77S. Carrillo Moreno,78F. Vazquez Valencia,78H. A. Salazar Ibarguen,79 E. Casimiro Linares,80A. Morelos Pineda,80M. A. Reyes-Santos,80D. Krofcheck,81J. Tam,81P. H. Butler,82
R. Doesburg,82H. Silverwood,82M. Ahmad,83I. Ahmed,83M. H. Ansari,83M. I. Asghar,83H. R. Hoorani,83 S. Khalid,83W. A. Khan,83T. Khurshid,83S. Qazi,83M. A. Shah,83M. Shoaib,83G. Brona,84M. Cwiok,84
W. Dominik,84K. Doroba,84A. Kalinowski,84M. Konecki,84J. Krolikowski,84T. Frueboes,85R. Gokieli,85 M. Go´rski,85M. Kazana,85K. Nawrocki,85K. Romanowska-Rybinska,85M. Szleper,85G. Wrochna,85P. Zalewski,85
N. Almeida,86P. Bargassa,86A. David,86P. Faccioli,86P. G. Ferreira Parracho,86M. Gallinaro,86,bP. Musella,86 A. Nayak,86J. Pela,86,bP. Q. Ribeiro,86J. Seixas,86J. Varela,86S. Afanasiev,87I. Belotelov,87P. Bunin,87 M. Gavrilenko,87I. Golutvin,87A. Kamenev,87V. Karjavin,87G. Kozlov,87A. Lanev,87P. Moisenz,87V. Palichik,87
V. Perelygin,87S. Shmatov,87V. Smirnov,87A. Volodko,87A. Zarubin,87V. Golovtsov,88Y. Ivanov,88V. Kim,88 P. Levchenko,88V. Murzin,88V. Oreshkin,88I. Smirnov,88V. Sulimov,88L. Uvarov,88S. Vavilov,88A. Vorobyev,88
An. Vorobyev,88Yu. Andreev,89A. Dermenev,89S. Gninenko,89N. Golubev,89M. Kirsanov,89N. Krasnikov,89 V. Matveev,89A. Pashenkov,89A. Toropin,89S. Troitsky,89V. Epshteyn,90M. Erofeeva,90V. Gavrilov,90 V. Kaftanov,90,aM. Kossov,90,bA. Krokhotin,90N. Lychkovskaya,90V. Popov,90G. Safronov,90S. Semenov,90
V. Stolin,90E. Vlasov,90A. Zhokin,90A. Belyaev,91E. Boos,91M. Dubinin,91,dL. Dudko,91A. Gribushin,91 V. Klyukhin,91O. Kodolova,91I. Lokhtin,91A. Markina,91S. Obraztsov,91M. Perfilov,91S. Petrushanko,91
L. Sarycheva,91V. Savrin,91A. Snigirev,91V. Andreev,92M. Azarkin,92I. Dremin,92M. Kirakosyan,92 A. Leonidov,92G. Mesyats,92S. V. Rusakov,92A. Vinogradov,92I. Azhgirey,93I. Bayshev,93S. Bitioukov,93
V. Grishin,93,bV. Kachanov,93D. Konstantinov,93A. Korablev,93V. Krychkine,93V. Petrov,93R. Ryutin,93 A. Sobol,93L. Tourtchanovitch,93S. Troshin,93N. Tyurin,93A. Uzunian,93A. Volkov,93P. Adzic,94,y M. Djordjevic,94D. Krpic,94,yJ. Milosevic,94M. Aguilar-Benitez,95J. Alcaraz Maestre,95P. Arce,95C. Battilana,95 E. Calvo,95M. Cerrada,95M. Chamizo Llatas,95N. Colino,95B. De La Cruz,95A. Delgado Peris,95C. Diez Pardos,95 D. Domı´nguez Va´zquez,95C. Fernandez Bedoya,95J. P. Ferna´ndez Ramos,95A. Ferrando,95J. Flix,95M. C. Fouz,95
P. Garcia-Abia,95O. Gonzalez Lopez,95S. Goy Lopez,95J. M. Hernandez,95M. I. Josa,95G. Merino,95 J. Puerta Pelayo,95I. Redondo,95L. Romero,95J. Santaolalla,95M. S. Soares,95C. Willmott,95C. Albajar,96 G. Codispoti,96J. F. de Troco´niz,96J. Cuevas,97J. Fernandez Menendez,97S. Folgueras,97I. Gonzalez Caballero,97 L. Lloret Iglesias,97J. M. Vizan Garcia,97J. A. Brochero Cifuentes,98I. J. Cabrillo,98A. Calderon,98S. H. Chuang,98
J. Duarte Campderros,98M. Felcini,98,zM. Fernandez,98G. Gomez,98J. Gonzalez Sanchez,98C. Jorda,98 P. Lobelle Pardo,98A. Lopez Virto,98J. Marco,98R. Marco,98C. Martinez Rivero,98F. Matorras,98 F. J. Munoz Sanchez,98J. Piedra Gomez,98,aaT. Rodrigo,98A. Y. Rodrı´guez-Marrero,98A. Ruiz-Jimeno,98 L. Scodellaro,98M. Sobron Sanudo,98I. Vila,98R. Vilar Cortabitarte,98D. Abbaneo,99E. Auffray,99G. Auzinger,99
P. Baillon,99A. H. Ball,99D. Barney,99A. J. Bell,99,bbD. Benedetti,99C. Bernet,99,eW. Bialas,99P. Bloch,99 A. Bocci,99S. Bolognesi,99M. Bona,99H. Breuker,99K. Bunkowski,99T. Camporesi,99G. Cerminara,99
T. Christiansen,99J. A. Coarasa Perez,99B. Cure´,99D. D’Enterria,99A. De Roeck,99S. Di Guida,99 N. Dupont-Sagorin,99A. Elliott-Peisert,99B. Frisch,99W. Funk,99A. Gaddi,99G. Georgiou,99H. Gerwig,99
D. Gigi,99K. Gill,99D. Giordano,99F. Glege,99R. Gomez-Reino Garrido,99M. Gouzevitch,99P. Govoni,99 S. Gowdy,99R. Guida,99L. Guiducci,99M. Hansen,99C. Hartl,99J. Harvey,99J. Hegeman,99B. Hegner,99 H. F. Hoffmann,99V. Innocente,99P. Janot,99K. Kaadze,99E. Karavakis,99P. Lecoq,99C. Lourenc¸o,99T. Ma¨ki,99
M. Malberti,99L. Malgeri,99M. Mannelli,99L. Masetti,99A. Maurisset,99F. Meijers,99S. Mersi,99E. Meschi,99 R. Moser,99M. U. Mozer,99M. Mulders,99E. Nesvold,99M. Nguyen,99T. Orimoto,99L. Orsini,99 E. Palencia Cortezon,99E. Perez,99A. Petrilli,99A. Pfeiffer,99M. Pierini,99M. Pimia¨,99D. Piparo,99G. Polese,99
L. Quertenmont,99A. Racz,99W. Reece,99J. Rodrigues Antunes,99G. Rolandi,99,ccT. Rommerskirchen,99 C. Rovelli,99,ddM. Rovere,99H. Sakulin,99C. Scha¨fer,99C. Schwick,99I. Segoni,99A. Sharma,99P. Siegrist,99
P. Silva,99M. Simon,99P. Sphicas,99,eeD. Spiga,99M. Spiropulu,99,dM. Stoye,99A. Tsirou,99P. Vichoudis,99 H. K. Wo¨hri,99S. D. Worm,99W. D. Zeuner,99W. Bertl,100K. Deiters,100W. Erdmann,100K. Gabathuler,100 R. Horisberger,100Q. Ingram,100H. C. Kaestli,100S. Ko¨nig,100D. Kotlinski,100U. Langenegger,100F. Meier,100 D. Renker,100T. Rohe,100J. Sibille,100,ffL. Ba¨ni,101P. Bortignon,101L. Caminada,101,ggB. Casal,101N. Chanon,101 Z. Chen,101S. Cittolin,101G. Dissertori,101M. Dittmar,101J. Eugster,101K. Freudenreich,101C. Grab,101W. Hintz,101
P. Lecomte,101W. Lustermann,101C. Marchica,101,ggP. Martinez Ruiz del Arbol,101P. Milenovic,101,hh F. Moortgat,101C. Na¨geli,101,ggP. Nef,101F. Nessi-Tedaldi,101L. Pape,101F. Pauss,101T. Punz,101A. Rizzi,101 F. J. Ronga,101M. Rossini,101L. Sala,101A. K. Sanchez,101M.-C. Sawley,101A. Starodumov,101,iiB. Stieger,101
M. Takahashi,101L. Tauscher,101,aA. Thea,101K. Theofilatos,101D. Treille,101C. Urscheler,101R. Wallny,101 M. Weber,101L. Wehrli,101J. Weng,101E. Aguilo,102C. Amsler,102V. Chiochia,102S. De Visscher,102C. Favaro,102 M. Ivova Rikova,102A. Jaeger,102B. Millan Mejias,102P. Otiougova,102P. Robmann,102A. Schmidt,102H. Snoek,102 Y. H. Chang,103K. H. Chen,103C. M. Kuo,103S. W. Li,103W. Lin,103Z. K. Liu,103Y. J. Lu,103D. Mekterovic,103
R. Volpe,103S. S. Yu,103P. Bartalini,104P. Chang,104Y. H. Chang,104Y. W. Chang,104Y. Chao,104K. F. Chen,104 W.-S. Hou,104Y. Hsiung,104K. Y. Kao,104Y. J. Lei,104R.-S. Lu,104J. G. Shiu,104Y. M. Tzeng,104X. Wan,104
M. Wang,104A. Adiguzel,105M. N. Bakirci,105,jjS. Cerci,105,kkC. Dozen,105I. Dumanoglu,105E. Eskut,105 S. Girgis,105G. Gokbulut,105I. Hos,105E. E. Kangal,105A. Kayis Topaksu,105G. Onengut,105K. Ozdemir,105 S. Ozturk,105,llA. Polatoz,105K. Sogut,105,mmD. Sunar Cerci,105,kkB. Tali,105,kkH. Topakli,105,jjD. Uzun,105 L. N. Vergili,105M. Vergili,105I. V. Akin,106T. Aliev,106B. Bilin,106S. Bilmis,106M. Deniz,106H. Gamsizkan,106 A. M. Guler,106K. Ocalan,106A. Ozpineci,106M. Serin,106R. Sever,106U. E. Surat,106M. Yalvac,106E. Yildirim,106
M. Zeyrek,106M. Deliomeroglu,107D. Demir,107,nnE. Gu¨lmez,107B. Isildak,107M. Kaya,107,ooO. Kaya,107,oo M. O¨ zbek,107S. Ozkorucuklu,107,ppN. Sonmez,107,qqL. Levchuk,108F. Bostock,109J. J. Brooke,109T. L. Cheng,109
E. Clement,109D. Cussans,109R. Frazier,109J. Goldstein,109M. Grimes,109D. Hartley,109G. P. Heath,109 H. F. Heath,109L. Kreczko,109S. Metson,109D. M. Newbold,109,rrK. Nirunpong,109A. Poll,109S. Senkin,109
V. J. Smith,109L. Basso,110,ssK. W. Bell,110A. Belyaev,110,ssC. Brew,110R. M. Brown,110B. Camanzi,110 D. J. A. Cockerill,110J. A. Coughlan,110K. Harder,110S. Harper,110J. Jackson,110B. W. Kennedy,110E. Olaiya,110
D. Petyt,110B. C. Radburn-Smith,110C. H. Shepherd-Themistocleous,110I. R. Tomalin,110W. J. Womersley,110 R. Bainbridge,111G. Ball,111J. Ballin,111R. Beuselinck,111O. Buchmuller,111D. Colling,111N. Cripps,111 M. Cutajar,111G. Davies,111M. Della Negra,111W. Ferguson,111J. Fulcher,111D. Futyan,111A. Gilbert,111 A. Guneratne Bryer,111G. Hall,111Z. Hatherell,111J. Hays,111G. Iles,111M. Jarvis,111G. Karapostoli,111 L. Lyons,111B. C. MacEvoy,111A.-M. Magnan,111J. Marrouche,111B. Mathias,111R. Nandi,111J. Nash,111
A. Nikitenko,111,iiA. Papageorgiou,111M. Pesaresi,111K. Petridis,111M. Pioppi,111,ttD. M. Raymond,111 S. Rogerson,111N. Rompotis,111A. Rose,111M. J. Ryan,111C. Seez,111P. Sharp,111A. Sparrow,111A. Tapper,111 S. Tourneur,111M. Vazquez Acosta,111T. Virdee,111S. Wakefield,111N. Wardle,111D. Wardrope,111T. Whyntie,111 M. Barrett,112M. Chadwick,112J. E. Cole,112P. R. Hobson,112A. Khan,112P. Kyberd,112D. Leslie,112W. Martin,112 I. D. Reid,112L. Teodorescu,112K. Hatakeyama,113H. Liu,113C. Henderson,114T. Bose,115E. Carrera Jarrin,115
C. Fantasia,115A. Heister,115J. St. John,115P. Lawson,115D. Lazic,115J. Rohlf,115D. Sperka,115L. Sulak,115 A. Avetisyan,116S. Bhattacharya,116J. P. Chou,116D. Cutts,116A. Ferapontov,116U. Heintz,116S. Jabeen,116 G. Kukartsev,116G. Landsberg,116M. Luk,116M. Narain,116D. Nguyen,116M. Segala,116T. Sinthuprasith,116 T. Speer,116K. V. Tsang,116R. Breedon,117G. Breto,117M. Calderon De La Barca Sanchez,117S. Chauhan,117
M. Chertok,117J. Conway,117R. Conway,117P. T. Cox,117J. Dolen,117R. Erbacher,117E. Friis,117W. Ko,117 A. Kopecky,117R. Lander,117H. Liu,117S. Maruyama,117T. Miceli,117M. Nikolic,117D. Pellett,117J. Robles,117
B. Rutherford,117S. Salur,117T. Schwarz,117M. Searle,117J. Smith,117M. Squires,117M. Tripathi,117 R. Vasquez Sierra,117C. Veelken,117V. Andreev,118K. Arisaka,118D. Cline,118R. Cousins,118A. Deisher,118 J. Duris,118S. Erhan,118C. Farrell,118J. Hauser,118M. Ignatenko,118C. Jarvis,118C. Plager,118G. Rakness,118
P. Schlein,118,aJ. Tucker,118V. Valuev,118J. Babb,119A. Chandra,119R. Clare,119J. Ellison,119J. W. Gary,119 F. Giordano,119G. Hanson,119G. Y. Jeng,119S. C. Kao,119F. Liu,119H. Liu,119O. R. Long,119A. Luthra,119 H. Nguyen,119S. Paramesvaran,119B. C. Shen,119,aR. Stringer,119J. Sturdy,119S. Sumowidagdo,119R. Wilken,119
S. Wimpenny,119W. Andrews,120J. G. Branson,120G. B. Cerati,120D. Evans,120F. Golf,120A. Holzner,120 R. Kelley,120M. Lebourgeois,120J. Letts,120B. Mangano,120S. Padhi,120C. Palmer,120G. Petrucciani,120H. Pi,120 M. Pieri,120R. Ranieri,120M. Sani,120V. Sharma,120S. Simon,120E. Sudano,120M. Tadel,120Y. Tu,120A. Vartak,120
S. Wasserbaech,120,uuF. Wu¨rthwein,120A. Yagil,120J. Yoo,120D. Barge,121R. Bellan,121C. Campagnari,121 M. D’Alfonso,121T. Danielson,121K. Flowers,121P. Geffert,121J. Incandela,121C. Justus,121P. Kalavase,121 S. A. Koay,121D. Kovalskyi,121,bV. Krutelyov,121S. Lowette,121N. Mccoll,121E. Mullin,121V. Pavlunin,121 F. Rebassoo,121J. Ribnik,121J. Richman,121R. Rossin,121D. Stuart,121W. To,121J. R. Vlimant,121C. West,121 A. Apresyan,122A. Bornheim,122J. Bunn,122Y. Chen,122M. Gataullin,122Y. Ma,122A. Mott,122H. B. Newman,122
C. Rogan,122K. Shin,122V. Timciuc,122P. Traczyk,122J. Veverka,122R. Wilkinson,122Y. Yang,122R. Y. Zhu,122 B. Akgun,123R. Carroll,123T. Ferguson,123Y. Iiyama,123D. W. Jang,123S. Y. Jun,123Y. F. Liu,123M. Paulini,123
J. Russ,123H. Vogel,123I. Vorobiev,123J. P. Cumalat,124M. E. Dinardo,124B. R. Drell,124C. J. Edelmaier,124 W. T. Ford,124A. Gaz,124B. Heyburn,124E. Luiggi Lopez,124U. Nauenberg,124J. G. Smith,124K. Stenson,124 K. A. Ulmer,124S. R. Wagner,124S. L. Zang,124L. Agostino,125J. Alexander,125A. Chatterjee,125N. Eggert,125 L. K. Gibbons,125B. Heltsley,125K. Henriksson,125W. Hopkins,125A. Khukhunaishvili,125B. Kreis,125Y. Liu,125 G. Nicolas Kaufman,125J. R. Patterson,125D. Puigh,125A. Ryd,125M. Saelim,125E. Salvati,125X. Shi,125W. Sun,125 W. D. Teo,125J. Thom,125J. Thompson,125J. Vaughan,125Y. Weng,125L. Winstrom,125P. Wittich,125A. Biselli,126
G. Cirino,126D. Winn,126S. Abdullin,127M. Albrow,127J. Anderson,127G. Apollinari,127M. Atac,127 J. A. Bakken,127L. A. T. Bauerdick,127A. Beretvas,127J. Berryhill,127P. C. Bhat,127I. Bloch,127K. Burkett,127 J. N. Butler,127V. Chetluru,127H. W. K. Cheung,127F. Chlebana,127S. Cihangir,127W. Cooper,127D. P. Eartly,127
V. D. Elvira,127S. Esen,127I. Fisk,127J. Freeman,127Y. Gao,127E. Gottschalk,127D. Green,127K. Gunthoti,127 O. Gutsche,127J. Hanlon,127R. M. Harris,127J. Hirschauer,127B. Hooberman,127H. Jensen,127M. Johnson,127 U. Joshi,127R. Khatiwada,127B. Klima,127K. Kousouris,127S. Kunori,127S. Kwan,127C. Leonidopoulos,127
P. Limon,127D. Lincoln,127R. Lipton,127J. Lykken,127K. Maeshima,127J. M. Marraffino,127D. Mason,127 P. McBride,127T. Miao,127K. Mishra,127S. Mrenna,127Y. Musienko,127,vvC. Newman-Holmes,127V. O’Dell,127 J. Pivarski,127R. Pordes,127O. Prokofyev,127E. Sexton-Kennedy,127S. Sharma,127W. J. Spalding,127L. Spiegel,127 P. Tan,127L. Taylor,127S. Tkaczyk,127L. Uplegger,127E. W. Vaandering,127R. Vidal,127J. Whitmore,127W. Wu,127
F. Yang,127F. Yumiceva,127J. C. Yun,127D. Acosta,128P. Avery,128D. Bourilkov,128M. Chen,128S. Das,128 M. De Gruttola,128G. P. Di Giovanni,128D. Dobur,128A. Drozdetskiy,128R. D. Field,128M. Fisher,128Y. Fu,128
I. K. Furic,128J. Gartner,128S. Goldberg,128J. Hugon,128B. Kim,128J. Konigsberg,128A. Korytov,128 A. Kropivnitskaya,128T. Kypreos,128J. F. Low,128K. Matchev,128G. Mitselmakher,128L. Muniz,128 P. Myeonghun,128C. Prescott,128R. Remington,128A. Rinkevicius,128M. Schmitt,128B. Scurlock,128P. Sellers,128
N. Skhirtladze,128M. Snowball,128D. Wang,128J. Yelton,128M. Zakaria,128V. Gaultney,129L. M. Lebolo,129 S. Linn,129P. Markowitz,129G. Martinez,129J. L. Rodriguez,129T. Adams,130A. Askew,130J. Bochenek,130
J. Chen,130B. Diamond,130S. V. Gleyzer,130J. Haas,130S. Hagopian,130V. Hagopian,130M. Jenkins,130 K. F. Johnson,130H. Prosper,130S. Sekmen,130V. Veeraraghavan,130M. M. Baarmand,131B. Dorney,131 M. Hohlmann,131H. Kalakhety,131I. Vodopiyanov,131M. R. Adams,132I. M. Anghel,132L. Apanasevich,132
Y. Bai,132V. E. Bazterra,132R. R. Betts,132J. Callner,132R. Cavanaugh,132C. Dragoiu,132L. Gauthier,132 C. E. Gerber,132D. J. Hofman,132S. Khalatyan,132G. J. Kunde,132F. Lacroix,132M. Malek,132C. O’Brien,132
C. Silkworth,132C. Silvestre,132A. Smoron,132D. Strom,132N. Varelas,132U. Akgun,133E. A. Albayrak,133 B. Bilki,133W. Clarida,133F. Duru,133C. K. Lae,133E. McCliment,133J.-P. Merlo,133H. Mermerkaya,133,ww A. Mestvirishvili,133A. Moeller,133J. Nachtman,133C. R. Newsom,133E. Norbeck,133J. Olson,133Y. Onel,133
F. Ozok,133S. Sen,133J. Wetzel,133T. Yetkin,133K. Yi,133B. A. Barnett,134B. Blumenfeld,134A. Bonato,134 C. Eskew,134D. Fehling,134G. Giurgiu,134A. V. Gritsan,134Z. J. Guo,134G. Hu,134P. Maksimovic,134 S. Rappoccio,134M. Swartz,134N. V. Tran,134A. Whitbeck,134P. Baringer,135A. Bean,135G. Benelli,135 O. Grachov,135R. P. Kenny Iii,135M. Murray,135D. Noonan,135S. Sanders,135J. S. Wood,135V. Zhukova,135
A. F. Barfuss,136T. Bolton,136I. Chakaberia,136A. Ivanov,136S. Khalil,136M. Makouski,136Y. Maravin,136 S. Shrestha,136I. Svintradze,136Z. Wan,136J. Gronberg,137D. Lange,137D. Wright,137A. Baden,138 M. Boutemeur,138S. C. Eno,138D. Ferencek,138J. A. Gomez,138N. J. Hadley,138R. G. Kellogg,138M. Kirn,138
Y. Lu,138A. C. Mignerey,138K. Rossato,138P. Rumerio,138F. Santanastasio,138A. Skuja,138J. Temple,138 M. B. Tonjes,138S. C. Tonwar,138E. Twedt,138B. Alver,139G. Bauer,139J. Bendavid,139W. Busza,139E. Butz,139
I. A. Cali,139M. Chan,139V. Dutta,139P. Everaerts,139G. Gomez Ceballos,139M. Goncharov,139K. A. Hahn,139 P. Harris,139Y. Kim,139M. Klute,139Y.-J. Lee,139W. Li,139C. Loizides,139P. D. Luckey,139T. Ma,139S. Nahn,139
C. Paus,139D. Ralph,139C. Roland,139G. Roland,139M. Rudolph,139G. S. F. Stephans,139F. Sto¨ckli,139 K. Sumorok,139K. Sung,139D. Velicanu,139E. A. Wenger,139R. Wolf,139S. Xie,139M. Yang,139Y. Yilmaz,139 A. S. Yoon,139M. Zanetti,139S. I. Cooper,140P. Cushman,140B. Dahmes,140A. De Benedetti,140G. Franzoni,140
A. Gude,140J. Haupt,140K. Klapoetke,140Y. Kubota,140J. Mans,140N. Pastika,140V. Rekovic,140R. Rusack,140 M. Sasseville,140A. Singovsky,140N. Tambe,140J. Turkewitz,140L. M. Cremaldi,141R. Godang,141R. Kroeger,141 L. Perera,141R. Rahmat,141D. A. Sanders,141D. Summers,141K. Bloom,142S. Bose,142J. Butt,142D. R. Claes,142
A. Dominguez,142M. Eads,142P. Jindal,142J. Keller,142T. Kelly,142I. Kravchenko,142J. Lazo-Flores,142 H. Malbouisson,142S. Malik,142G. R. Snow,142U. Baur,143A. Godshalk,143I. Iashvili,143S. Jain,143 A. Kharchilava,143A. Kumar,143S. P. Shipkowski,143K. Smith,143G. Alverson,144E. Barberis,144D. Baumgartel,144 O. Boeriu,144M. Chasco,144S. Reucroft,144J. Swain,144D. Trocino,144D. Wood,144J. Zhang,144A. Anastassov,145
A. Kubik,145N. Mucia,145N. Odell,145R. A. Ofierzynski,145B. Pollack,145A. Pozdnyakov,145M. Schmitt,145 S. Stoynev,145M. Velasco,145S. Won,145L. Antonelli,146D. Berry,146A. Brinkerhoff,146M. Hildreth,146 C. Jessop,146D. J. Karmgard,146J. Kolb,146T. Kolberg,146K. Lannon,146W. Luo,146S. Lynch,146N. Marinelli,146 D. M. Morse,146T. Pearson,146R. Ruchti,146J. Slaunwhite,146N. Valls,146M. Wayne,146J. Ziegler,146B. Bylsma,147 L. S. Durkin,147J. Gu,147C. Hill,147P. Killewald,147K. Kotov,147T. Y. Ling,147M. Rodenburg,147C. Vuosalo,147
G. Williams,147N. Adam,148E. Berry,148P. Elmer,148D. Gerbaudo,148V. Halyo,148P. Hebda,148A. Hunt,148 E. Laird,148D. Lopes Pegna,148D. Marlow,148T. Medvedeva,148M. Mooney,148J. Olsen,148P. Piroue´,148X. Quan,148 B. Safdi,148H. Saka,148D. Stickland,148C. Tully,148J. S. Werner,148A. Zuranski,148J. G. Acosta,149X. T. Huang,149
A. Lopez,149H. Mendez,149S. Oliveros,149J. E. Ramirez Vargas,149A. Zatserklyaniy,149E. Alagoz,150 V. E. Barnes,150G. Bolla,150L. Borrello,150D. Bortoletto,150M. De Mattia,150A. Everett,150A. F. Garfinkel,150
L. Gutay,150Z. Hu,150M. Jones,150O. Koybasi,150M. Kress,150A. T. Laasanen,150N. Leonardo,150C. Liu,150 V. Maroussov,150P. Merkel,150D. H. Miller,150N. Neumeister,150I. Shipsey,150D. Silvers,150A. Svyatkovskiy,150
H. D. Yoo,150J. Zablocki,150Y. Zheng,150S. Guragain,151N. Parashar,151A. Adair,152C. Boulahouache,152 K. M. Ecklund,152F. J. M. Geurts,152B. P. Padley,152R. Redjimi,152J. Roberts,152J. Zabel,152B. Betchart,153
A. Bodek,153Y. S. Chung,153R. Covarelli,153P. de Barbaro,153R. Demina,153Y. Eshaq,153H. Flacher,153 A. Garcia-Bellido,153P. Goldenzweig,153Y. Gotra,153J. Han,153A. Harel,153D. C. Miner,153D. Orbaker,153 G. Petrillo,153W. Sakumoto,153D. Vishnevskiy,153M. Zielinski,153A. Bhatti,154R. Ciesielski,154L. Demortier,154
K. Goulianos,154G. Lungu,154S. Malik,154C. Mesropian,154S. Arora,155O. Atramentov,155A. Barker,155 C. Contreras-Campana,155E. Contreras-Campana,155D. Duggan,155Y. Gershtein,155R. Gray,155E. Halkiadakis,155
D. Hidas,155D. Hits,155A. Lath,155S. Panwalkar,155R. Patel,155A. Richards,155K. Rose,155S. Schnetzer,155 S. Somalwar,155R. Stone,155S. Thomas,155G. Cerizza,156M. Hollingsworth,156S. Spanier,156Z. C. Yang,156
A. York,156R. Eusebi,157W. Flanagan,157J. Gilmore,157A. Gurrola,157T. Kamon,157V. Khotilovich,157 R. Montalvo,157I. Osipenkov,157Y. Pakhotin,157A. Safonov,157S. Sengupta,157I. Suarez,157A. Tatarinov,157 D. Toback,157N. Akchurin,158C. Bardak,158J. Damgov,158P. R. Dudero,158C. Jeong,158K. Kovitanggoon,158
S. W. Lee,158T. Libeiro,158P. Mane,158Y. Roh,158A. Sill,158I. Volobouev,158R. Wigmans,158E. Yazgan,158 E. Appelt,159E. Brownson,159D. Engh,159C. Florez,159W. Gabella,159M. Issah,159W. Johns,159C. Johnston,159
P. Kurt,159C. Maguire,159A. Melo,159P. Sheldon,159B. Snook,159S. Tuo,159J. Velkovska,159M. W. Arenton,160 M. Balazs,160S. Boutle,160B. Cox,160B. Francis,160S. Goadhouse,160J. Goodell,160R. Hirosky,160A. Ledovskoy,160
C. Lin,160C. Neu,160J. Wood,160R. Yohay,160S. Gollapinni,161R. Harr,161P. E. Karchin,161 C. Kottachchi Kankanamge Don,161P. Lamichhane,161M. Mattson,161C. Milste`ne,161A. Sakharov,161 M. Anderson,162M. Bachtis,162D. Belknap,162J. N. Bellinger,162D. Carlsmith,162M. Cepeda,162S. Dasu,162 J. Efron,162L. Gray,162K. S. Grogg,162M. Grothe,162R. Hall-Wilton,162M. Herndon,162A. Herve´,162P. Klabbers,162
J. Klukas,162A. Lanaro,162C. Lazaridis,162J. Leonard,162R. Loveless,162A. Mohapatra,162I. Ojalvo,162 W. Parker,162I. Ross,162A. Savin,162W. H. Smith,162J. Swanson,162and M. Weinberg162
(CMS Collaboration)
1Yerevan Physics Institute, Yerevan, Armenia 2
Institut fu¨r Hochenergiephysik der OeAW, Wien, Austria
3National Centre for Particle and High Energy Physics, Minsk, Belarus 4Universiteit Antwerpen, Antwerpen, Belgium
5Vrije Universiteit Brussel, Brussel, Belgium 6Universite´ Libre de Bruxelles, Bruxelles, Belgium
7Ghent University, Ghent, Belgium
8Universite´ Catholique de Louvain, Louvain-la-Neuve, Belgium 9Universite´ de Mons, Mons, Belgium
10Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil 11
Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
12Instituto de Fisica Teorica, Universidade Estadual Paulista, Sao Paulo, Brazil 13Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
14University of Sofia, Sofia, Bulgaria 15Institute of High Energy Physics, Beijing, China
16State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China 17Universidad de Los Andes, Bogota, Colombia
18Technical University of Split, Split, Croatia 19University of Split, Split, Croatia 20Institute Rudjer Boskovic, Zagreb, Croatia
21University of Cyprus, Nicosia, Cyprus 22Charles University, Prague, Czech Republic
23Academy of Scientific Research and Technology of the Arab Republic of Egypt,
Egyptian Network of High Energy Physics, Cairo, Egypt
24National Institute of Chemical Physics and Biophysics, Tallinn, Estonia 25Department of Physics, University of Helsinki, Helsinki, Finland
26Helsinki Institute of Physics, Helsinki, Finland 27Lappeenranta University of Technology, Lappeenranta, Finland
28Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France 29DSM/IRFU, CEA/Saclay, Gif-sur-Yvette, France
30
Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
31Institut Pluridisciplinaire Hubert Curien, Universite´ de Strasbourg, Universite´ de Haute Alsace Mulhouse,
CNRS/IN2P3, Strasbourg, France
32Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules (IN2P3), Villeurbanne, France 33Universite´ de Lyon, Universite´ Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucle´aire de Lyon, Villeurbanne, France
34Institute of High Energy Physics and Informatization, Tbilisi State University, Tbilisi, Georgia 35RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
36RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany 37RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
38Deutsches Elektronen-Synchrotron, Hamburg, Germany 39University of Hamburg, Hamburg, Germany 40Institut fu¨r Experimentelle Kernphysik, Karlsruhe, Germany 41Institute of Nuclear Physics ‘‘Demokritos,’’ Aghia Paraskevi, Greece
42University of Athens, Athens, Greece 43University of Ioa´nnina, Ioa´nnina, Greece
44KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary 45
Institute of Nuclear Research ATOMKI, Debrecen, Hungary
46University of Debrecen, Debrecen, Hungary 47Panjab University, Chandigarh, India
48University of Delhi, Delhi, India 49Saha Institute of Nuclear Physics, Kolkata, India
50Bhabha Atomic Research Centre, Mumbai, India 51Tata Institute of Fundamental Research–EHEP, Mumbai, India 52Tata Institute of Fundamental Research–HECR, Mumbai, India 53Institute for Research and Fundamental Sciences (IPM), Tehran, Iran
54aINFN Sezione di Bari, Bari, Italy 54bUniversita` di Bari, Bari, Italy 54cPolitecnico di Bari, Bari, Italy 55aINFN Sezione di Bologna, Bologna, Italy
55bUniversita` di Bologna, Bologna, Italy 56aINFN Sezione di Catania, Catania, Italy
56bUniversita` di Catania, Catania, Italy 57aINFN Sezione di Firenze, Firenze, Italy
57bUniversita` di Firenze, Firenze, Italy
58INFN Laboratori Nazionali di Frascati, Frascati, Italy 59INFN Sezione di Genova, Genova, Italy 60aINFN Sezione di Milano-Bicocca, Milano, Italy
60bUniversita` di Milano-Bicocca, Milano, Italy 61aINFN Sezione di Napoli, Napoli, Italy 61b
Universita` di Napoli ‘‘Federico II,’’ Napoli, Italy
62aINFN Sezione di Padova, Padova, Italy 62bUniversita` di Padova, Padova, Italy 62cUniversita` di Trento (Trento), Padova, Italy
63aINFN Sezione di Pavia, Pavia, Italy 63bUniversita` di Pavia, Pavia, Italy 64aINFN Sezione di Perugia, Perugia, Italy
64bUniversita` di Perugia, Perugia, Italy 65aINFN Sezione di Pisa, Pisa, Italy
65b
Universita` di Pisa, Pisa, Italy
65cScuola Normale Superiore di Pisa, Pisa, Italy 66aINFN Sezione di Roma, Roma, Italy 66bUniversita` di Roma ‘‘La Sapienza,’’ Roma, Italy
67aINFN Sezione di Torino, Torino, Italy
67bUniversita` di Torino, Torino, Italy
67cUniversita` del Piemonte Orientale (Novara), Torino, Italy 68aINFN Sezione di Trieste, Trieste, Italy
68bUniversita` di Trieste, Trieste, Italy 69Kangwon National University, Chunchon, Korea
70Kyungpook National University, Daegu, Korea
71Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea 72Konkuk University, Seoul, Korea
73
Korea University, Seoul, Korea
74University of Seoul, Seoul, Korea 75Sungkyunkwan University, Suwon, Korea
76Vilnius University, Vilnius, Lithuania
77Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico 78Universidad Iberoamericana, Mexico City, Mexico
79Benemerita Universidad Autonoma de Puebla, Puebla, Mexico 80Universidad Auto´noma de San Luis Potosı´, San Luis Potosı´, Mexico
81University of Auckland, Auckland, New Zealand 82University of Canterbury, Christchurch, New Zealand
83National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan 84Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
85Soltan Institute for Nuclear Studies, Warsaw, Poland
86Laborato´rio de Instrumentac¸a˜o e Fı´sica Experimental de Partı´culas, Lisboa, Portugal 87Joint Institute for Nuclear Research, Dubna, Russia
88Petersburg Nuclear Physics Institute, Gatchina (St Petersburg), Russia 89
Institute for Nuclear Research, Moscow, Russia
90Institute for Theoretical and Experimental Physics, Moscow, Russia 91Moscow State University, Moscow, Russia
92P. N. Lebedev Physical Institute, Moscow, Russia
93State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, Russia 94University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia
95Centro de Investigaciones Energe´ticas Medioambientales y Tecnolo´gicas (CIEMAT), Madrid, Spain 96Universidad Auto´noma de Madrid, Madrid, Spain
97Universidad de Oviedo, Oviedo, Spain
98Instituto de Fı´sica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain 99CERN, European Organization for Nuclear Research, Geneva, Switzerland
100Paul Scherrer Institut, Villigen, Switzerland
101Institute for Particle Physics, ETH Zurich, Zurich, Switzerland 102Universita¨t Zu¨rich, Zurich, Switzerland
103National Central University, Chung-Li, Taiwan 104National Taiwan University (NTU), Taipei, Taiwan
105Cukurova University, Adana, Turkey
106Middle East Technical University, Physics Department, Ankara, Turkey 107Bogazici University, Istanbul, Turkey
108National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine 109University of Bristol, Bristol, United Kingdom
110Rutherford Appleton Laboratory, Didcot, United Kingdom 111Imperial College, London, United Kingdom 112
Brunel University, Uxbridge, United Kingdom
113Baylor University, Waco, Texas, USA
114The University of Alabama, Tuscaloosa, Alabama, USA 115Boston University, Boston, Massachusetts, USA 116Brown University, Providence, Rhode Island, USA 117University of California, Davis, Davis, California, USA 118University of California, Los Angeles, Los Angeles, California, USA
119University of California, Riverside, Riverside, California, USA 120University of California, San Diego, La Jolla, California, USA 121
University of California, Santa Barbara, Santa Barbara, California, USA
122California Institute of Technology, Pasadena, California, USA 123Carnegie Mellon University, Pittsburgh, Pennsylvania, USA 124University of Colorado at Boulder, Boulder, Colorado, USA
126Fairfield University, Fairfield, Connecticut, USA 127Fermi National Accelerator Laboratory, Batavia, Illinois, USA
128University of Florida, Gainesville, Florida, USA 129Florida International University, Miami, Florida, USA
130Florida State University, Tallahassee, Florida, USA 131Florida Institute of Technology, Melbourne, Florida, USA 132University of Illinois at Chicago (UIC), Chicago, Illinois, USA
133The University of Iowa, Iowa City, Iowa, USA 134
Johns Hopkins University, Baltimore, Maryland, USA
135The University of Kansas, Lawrence, Kansas, USA 136Kansas State University, Manhattan, Kansas, USA
137Lawrence Livermore National Laboratory, Livermore, California, USA 138University of Maryland, College Park, Maryland, USA 139Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
140University of Minnesota, Minneapolis, Minnesota, USA 141University of Mississippi, University, Mississippi, USA 142University of Nebraska-Lincoln, Lincoln, Nebraska, USA 143State University of New York at Buffalo, Buffalo, New York, USA
144Northeastern University, Boston, Massachusetts, USA 145Northwestern University, Evanston, Illinois, USA 146University of Notre Dame, Notre Dame, Indiana, USA
147The Ohio State University, Columbus, Ohio, USA 148Princeton University, Princeton, New Jersey, USA 149University of Puerto Rico, Mayaguez, Puerto Rico, USA
150
Purdue University, West Lafayette, Indiana, USA
151Purdue University Calumet, Hammond, Indiana, USA 152Rice University, Houston, Texas, USA 153University of Rochester, Rochester, New York, USA 154The Rockefeller University, New York, New York, USA
155Rutgers, the State University of New Jersey, Piscataway, New Jersey, USA 156University of Tennessee, Knoxville, Tennessee, USA
157Texas A&M University, College Station, Texas, USA 158Texas Tech University, Lubbock, Texas, USA 159Vanderbilt University, Nashville, Tennessee, USA 160University of Virginia, Charlottesville, Virginia, USA
161Wayne State University, Detroit, Michigan, USA 162University of Wisconsin, Madison, Wisconsin, USA
aDeceased.
bAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland. c
Also at Universidade Federal do ABC, Santo Andre, Brazil.
dAlso at California Institute of Technology, Pasadena, California, USA.
eAlso at Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France. fAlso at Suez Canal University, Suez, Egypt.
gAlso at British University, Cairo, Egypt. hAlso at Fayoum University, El-Fayoum, Egypt.
iAlso at Ain Shams University, Cairo, Egypt.
jAlso at Soltan Institute for Nuclear Studies, Warsaw, Poland.
kAlso at Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. lAlso at Universite´ de Haute-Alsace, Mulhouse, France.
mAlso at Brandenburg University of Technology, Cottbus, Germany. nAlso at Moscow State University, Moscow, Russia.
oAlso at Institute of Nuclear Research ATOMKI, Debrecen, Hungary. pAlso at Eo¨tvo¨s Lora´nd University, Budapest, Hungary.
q
Also at Tata Institute of Fundamental Research–HECR, Mumbai, India. r
Also at University of Visva-Bharati, Santiniketan, India. sAlso at Sharif University of Technology, Tehran, Iran. tAlso at Isfahan University of Technology, Isfahan, Iran. uAlso at Shiraz University, Shiraz, Iran.
vAlso at Facolta` Ingegneria Universita` di Roma, Roma, Italy. wAlso at Universita` della Basilicata, Potenza, Italy.
xAlso at Universita` degli studi di Siena, Siena, Italy.
yAlso at Faculty of Physics of University of Belgrade, Belgrade, Serbia. zAlso at University of California, Los Angeles, Los Angeles, California, USA. aaAlso at University of Florida, Gainesville, Florida, USA.
bbAlso at Universite´ de Gene`ve, Geneva, Switzerland. ccAlso at Scuola Normale e Sezione dell’ INFN, Pisa, Italy.
ddAlso at INFN Sezione di Roma, Universita` di Roma ‘‘La Sapienza,’’ Roma, Italy. eeAlso at University of Athens, Athens, Greece.
ffAlso at The University of Kansas, Lawrence, Kansas, USA. ggAlso at Paul Scherrer Institut, Villigen, Switzerland.
hhAlso at University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia. iiAlso at Institute for Theoretical and Experimental Physics, Moscow, Russia.
jj
Also at Gaziosmanpasa University, Tokat, Turkey. kkAlso at Adiyaman University, Adiyaman, Turkey.
llAlso at The University of Iowa, Iowa City, Iowa, USA. mmAlso at Mersin University, Mersin, Turkey.
nnAlso at Izmir Institute of Technology, Izmir, Turkey. ooAlso at Kafkas University, Kars, Turkey.
ppAlso at Suleyman Demirel University, Isparta, Turkey. qqAlso at Ege University, Izmir, Turkey.
rrAlso at Rutherford Appleton Laboratory, Didcot, United Kingdom.
ssAlso at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom. ttAlso at INFN Sezione di Perugia, Universita` di Perugia, Perugia, Italy.
uuAlso at Utah Valley University, Orem, Utah, USA. vvAlso at Institute for Nuclear Research, Moscow, Russia. wwAlso at Erzincan University, Erzincan, Turkey.
