Measurement of the Polarization of W Bosons with Large Transverse Momenta
in W þ jets Events at the LHC
S. Chatrchyan et al.* (CMS Collaboration)
(Received 21 April 2011; published 6 July 2011)
A first measurement of the polarization of W bosons with large transverse momenta in pp collisions is presented. The measurement is based on36 pb1of data recorded atpffiffiffis¼ 7 TeV by the CMS detector at the LHC. The left-handed, right-handed, and longitudinal polarization fractions (fL, fR, and f0, respec-tively) of W bosons with transverse momenta larger than 50 GeV are determined by using decays to both electrons and muons. The muon final state yields the most precise measurement:ðfL fRÞ¼ 0:240 0:036ðstatÞ 0:031ðsystÞ and f
0 ¼ 0:183 0:087ðstatÞ 0:123ðsystÞ for negatively charged W bosons and ðfL fRÞþ¼ 0:310 0:036ðstatÞ 0:017ðsystÞ and f0þ¼ 0:171 0:085ðstatÞ 0:099ðsystÞ for positively charged W bosons. This establishes, for the first time, that W bosons produced in pp collisions with large transverse momenta are predominantly left-handed, as expected in the standard model.
DOI:10.1103/PhysRevLett.107.021802 PACS numbers: 14.70.Fm, 12.15.Ji, 13.88.+e
The measurement of the kinematic properties of W bosons produced at hadron colliders provides a stringent test of perturbative quantum chromodynamics (QCD) cal-culations as well as being an important prerequisite to searches for physics beyond the standard model. The pp collisions at the Large Hadron Collider (LHC) offer both a new environment and a higher energy to study W bosons with large transverse momenta recoiling against several energetic jets. The sizable production cross section results in significant samples of W bosons, while the nature of the initial state leads to an enhancement of the quark-gluon contribution to W þ jet production when compared to the Tevatron p p collider, where quark-gluon and antiquark-gluon processes contribute equally. This dominance of quark-gluon initial states, along with the V-A nature of the coupling of the W boson to fermions, implies that at the LHC W bosons with high transverse momenta are expected to exhibit a sizable left-handed polarization [1,2]. A sig-nificant asymmetry in the transverse momentum spectra of the neutrino and charged lepton from subsequent leptonic W decays is therefore expected. This Letter reports the first measurement of the polarization of W bosons with large transverse momenta ( > 50 GeV) at the LHC, using a data sample of pp collisions corresponding to an integrated luminosity of 36 1:4 pb1 at a center-of-mass energy of 7 TeV, recorded with the Compact Muon Solenoid (CMS) detector.
We measure the polarization of the W boson in the helicity frame, where the polar angle () of the charged
lepton from the decay in the W rest frame is measured with respect to the boson flight direction in the laboratory frame. The azimuthal angle () is defined to be zero for the proton beam which has the smaller in the boson rest frame. The cross section for W production at a hadron collider with a subsequent leptonic decay, dN=d, is given by [3]
dN
d / ð1 þ cos
2Þ þ1
2A0ð1 3cos2Þ þ A1sin2cosþ21A2sin2cos2
þ A3sincosþ A4cos; (1)
where the coefficients Ai(i ¼ 0; . . . ; 4) depend on the W
boson charge, transverse momentum, and rapidity and make up the elements of the polarization density matrix. Integrating Eq. (1) over yields
dN
d cos / ð1 þ cos
2Þ þ1
2A0ð1 3cos2Þ þ A4cos: (2) The fractions of left-handed, right-handed, and longitu-dinal W bosons (fL, fR, and f0, respectively) are related to
the parameters Ai by A0 / f0 and A4 / ðfL fRÞ,
where the superscripts relate to the W boson charge and by definition fi> 0 and fLþ fRþ f0 ¼ 1. A priori, the
values of the fiparameters are not expected to be the same
for both charges, since for partons, which carry a large fraction of the proton’s momentum, the ratio of valence u quarks to sea quarks is higher than that for valence d quarks.
The amount of W boson momentum imparted to the charged decay lepton is determined by cos, and hence an asymmetry in the cos distribution leads to an asymmetry between the neutrino and charged-lepton
*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.
momentum spectra. This can be quantified via a measure-ment of the A4 parameter. However, the inability to
deter-mine the momentum of the neutrino along the beam axis introduces a twofold ambiguity in the determination of the momentum of the W boson. Therefore, it is not possible to precisely determine the W boson rest frame required to extract the W decay angles. To overcome this, a variable which exhibits a strong correlation with cos is intro-duced. The lepton projection variable LP is defined as the
projection of the scaled transverse momentum of the charged lepton,p~Tð‘Þ=j ~pTðWÞj, onto the normalized
trans-verse momentum of the parent W boson, ~pTðWÞ=j ~pTðWÞj:
LP¼
~
pTð‘Þ ~pTðWÞ
j ~pTðWÞj2
: (3)
In the above expression,p~TðWÞ is estimated from the
vectorial sum of the missing transverse energy ~ET and
~
pTð‘Þ in the event. Experimentally, ~ET is reconstructed
as the negative vector sum of the transverse energy vectors of all particles identified in the event using a particle-flow algorithm [4]. In the limit of very high pTðWÞ, LP lies
within the range½0; 1 and cos ¼ 2ðLP12Þ.
The central feature of the CMS apparatus is a super-conducting solenoid, 13 m in length and 6 m in diameter, which provides an axial magnetic field of 3.8 T. The bore of the solenoid is instrumented with various particle detec-tion systems. Charged particle trajectories are measured by the silicon pixel and strip tracking detectors, covering 0 < < 2 in azimuth and jj < 2:5, where the pseudor-apidity is defined as ¼ ln½tanð=2Þ, and is the polar angle of the trajectory of the particle with respect to the counterclockwise beam direction when viewed from above. A crystal electromagnetic calorimeter and a brass or scintillator hadron calorimeter surround the tracking volume and cover the region jj < 3. The steel return yoke outside the solenoid is in turn instrumented with gas detectors, which are used to identify muons. The detector is nearly hermetic, allowing for energy balance measurements in the plane transverse to the beam direc-tion. A more detailed description of the CMS detector can be found elsewhere [5].
The trigger providing the data sample used in this analy-sis is based on the presence of at least one charged lepton, either an electron or a muon, with a minimum transverse momentum of 22 (15) GeV withinjj < 2:5 (2.4) for the electron (muon). Events passing this trigger are required to have at least one good reconstructed pp interaction vertex [6]. Electrons and muons are reconstructed and selected by using the procedure and requirements described in the measurement of the inclusive W=Z boson cross section [7]. The selection of W boson candidates requires one electron (muon), with pT> 25ð20Þ GeV in jj < 2:4ð2:1Þ. High-pT
leptons are also found in events in which hadronic jets mimic the lepton signature. Such misidentified leptons, as well as nonprompt leptons arising from decays of
heavy-flavor hadrons or decays of light mesons within jets, are suppressed by imposing limits on the additional hadronic activity surrounding the lepton candidate in an event. The scalar sum of the transverse momenta of all charged particle tracks and the transverse energy in the electromagnetic calorimeter and hadron calorimeter in a cone of R ¼pffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiðÞ2þ ðÞ2 ¼ 0:3 centered on the lepton candidate is calculated, excluding the contribution from the candidate itself. The candidate is retained if this sum is less than 4 (10)% of the electron (muon) pT.
Electrons (muons) from decays of Z bosons are suppressed by vetoing events containing a second lepton with pT>
15ð10Þ GeV passing looser isolation criteria.
Since the analysis measures the lepton and neutrino momenta from W boson decays, there is no requirement on the ~ET in the event. Instead, to further reduce
back-grounds from QCD multijet production, the selection re-quires MT> 50ð30Þ GeV for the electron (muon) channel,
where MT ¼
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 2j ~pTð‘Þjj~ETjð1 cosÞ
q
and is the angle between the missing transverse momentum and the lepton transverse momentum. The requirement on MT is
higher in the electron channel to compensate for the larger QCD multijet background. Given that the polarization and correlation of LP with cos increase with pTðWÞ, while
the number of available events decreases sharply with pTðWÞ, we require pTðWÞ > 50 GeV as the result of an
optimization study based on the expected statistical uncer-tainty of the (fL fR) measurement. As high-pT W
bo-sons are also produced in top quark decays, only events with up to three reconstructed jets are retained. The jets considered are particle-flow-based [8] with pT> 30 GeV,
jj < 5, and are clustered by using the anti-kT algorithm
[9] with a distance parameter of 0.5. In the data, a total of 5485 (8626) events pass the selection requirements in the electron (muon) channel. These events are almost entirely W þ jets events, with a small contamination from the electroweak processes tt þ jets, Z þ jets, and photon þ jets. All these processes, and their expectations, are pro-duced by using theMADGRAPH[10,11] generator, with the CTEQ6L[12] parton distribution function set, and are passed through a full simulation of the CMS detector based on the GEANT4 [13] package. There are 252 93 (266 84) estimated background events from simulation in the elec-tron (muon) channel, where the uncertainty corresponds to the theoretical uncertainty on the relevant cross sections.
In the muon channel, the background from QCD multijet and heavy-flavor production is expected to be negligible. In the electron channel, the simulation predicts a higher level of multijet background, and therefore the distribution of the LP variable for the surviving background events is
needed. This distribution is obtained by using data en-riched in misidentified electrons by reversing some of the electron selection requirements, as in Ref. [7]. We refer to this as the ‘‘antiselected sample.’’ As a cross-check, the
procedure is also applied to simulated samples. The LP
distribution from the QCD multijet background after all selection cuts is found to be well reproduced by the anti-selected electron sample.
The polarization fraction parameters (fL fR) and f0
are measured by using a binned maximum likelihood fit to the LPvariable, separately for Wþand W bosons in the
electron and muon final states. The LPdistribution for each
of the three polarization states of the W boson is extracted from Monte Carlo samples which are reweighted to the angular distributions expected from each polarization state in the W boson center-of-mass frame. The LPdistributions
are simulated in the presence of pileup events matching the vertex multiplicity distribution observed in the data, cor-responding to an average of 2.8 reconstructed vertices per event.
The LPdistributions for electrons and muons are shown
in Figs.1and2, respectively. Also shown are the results of the fit to the individual components corresponding to the three W polarization states and to the background. The background consists of an electroweak component and a QCD multijet component, which is negligible in the muon sample. The fit is carried out by keeping the electroweak background contribution fixed to the value predicted by simulation, whereas all other components, including the QCD multijet background, are allowed to vary. The results of the fits, along with the correlations between these ex-tracted parameters, are listed for positively and negatively charged electrons and muons in supplemental Table I [14]. For each W boson charge, the results for electrons and muons are self-consistent. The correlations differ due to the QCD multijet component included in the fit to the electron final state. Also shown are the results from per-forming a combined fit, simultaneously to both the electron and muon data.
Several experimental and theoretical effects are consid-ered as sources of systematic uncertainty. The most sig-nificant sources, which are listed in supplemental Table II [14], stem from the energy scale and resolution [15] un-certainties of the jets recoiling against the W boson, which enter in the measurement of its transverse momentum. These uncertainties are fully correlated between the elec-tron and muon channels. The recoil energy scale is varied by its measured uncertainty [16], and the effect is propa-gated through the analysis, resulting in modified LP
dis-tributions. The measurement is repeated, and the full difference from the nominal value is quoted as the system-atic uncertainty from this source. The effect is smaller for values of LPclose to 1, corresponding to low values of~ET,
and hence the uncertainty is smaller for Wrelative to Wþ. The same procedure is followed for the recoil resolution, electron energy, and muon momentum scale. Decays of Z bosons to electrons are used to derive corrections, in bins of the electron pseudorapidity, which calibrate the electron energy scale. An uncertainty of50% on these corrections
is assumed, in order to cover the full range of variations. Decays of Z bosons to muons are used to constrain the muon momentum scale, and an uncertainty of 1% at 100 GeV is found. The fit range of the lepton projection variable is restricted to 0:0 < LP< 1:3, as a result of the minimization of the combined statistical and systematic uncertainties of the measurement, independently for both the electron and muon channels.
The uncertainty on the modeling of the QCD back-ground in the electron channel is estimated by using the sample of antiselected electrons which yields the shape of the LPdistribution for this background. The fit is repeated
multiple times while varying the LP distribution of the
antiselected sample within its statistical uncertainties.
) -e ( P L 0 0.2 0.4 0.6 0.8 1 1.2 Events / 0.1 0 50 100 150 200 250 300 350 400 450 L f R f 0 f QCD EWK fit result data -1 = 36 pb int L = 7 TeV s CMS, ) + e ( P L 0 0.2 0.4 0.6 0.8 1 1.2 Events / 0.1 0 50 100 150 200 250 300 350 400 450 L f R f 0 f QCD EWK fit result data -1 = 36 pb int L = 7 TeV s CMS,
FIG. 1 (color online). Fit results using 36 pb1 of collision data for the LPðeÞ (top) and LPðeþÞ (bottom) distributions. The left-handed, right-handed, and longitudinal W components, with normalization as determined by the fit, are represented by the dashed, dotted, and dash-dotted lines, respectively. The shaded distributions show the QCD and electroweak (EWK) back-grounds. The solid line represents the sum of all individual components and can be directly compared with the data distri-bution (circles).
The variation in the fit results is then used as an estimate of the systematic uncertainty, which is found to be negligible (< 0:1%) when compared to the leading systematic uncertainties.
A mismeasurement of the lepton charge dilutes the measurement of the W boson polarization. The misidenti-fication rate is studied as a function of pseudorapidity using Z bosons decaying into a pair of oppositely charged lep-tons. This effect is found to be negligible for both electron and muon channels.
The systematic uncertainty arising from matching the vertex multiplicity distribution in the simulation to that observed in the data is estimated by varying the former within the statistical uncertainty of the latter and is found to be negligible.
The effect of the theoretical uncertainties on the nor-malization of the electroweak background distributions, corresponding to 25% for the Z boson and 50% for the top quark, is included in the fit and found to contribute a negligible systematic uncertainty to the W boson polariza-tion measurement. The lepton projecpolariza-tion variable also depends weakly on the values of the polarization parame-ters A1, A2, and A3, which are not measured. In order to
evaluate the magnitude of the effect, these coefficients are varied by 10% with respect to recent standard model calculations at leading-order QCD [2]. These variations produce a negligible change in the W boson polarization measurement. A similar result is obtained for the shape of the LP distributions by varying the parton distribution
functions using theCTEQ6.6PDF error set.
The muon fit result, having the smallest total uncer-tainty, is shown in the½ðfL fRÞ; f0 plane for each charge in Fig.3. The 68% confidence level contours for both the statistical and total uncertainties are also shown. With the current sensitivity, the values of (fL fR) and f0 do not
differ significantly for Wþ and W. When compared to recent standard model calculations [2], the results agree well.
In conclusion, the first measurement of the polarization of W bosons with large transverse momenta at a pp collider has been presented. By using a sample of collision data corresponding to an integrated luminosity of36 pb1, the measurement is performed for both charges of the W boson, in the electron and muon final states. The results from both of these channels are consistent, as are the
) -µ ( P L 0 0.2 0.4 0.6 0.8 1 1.2 Events / 0.1 0 100 200 300 400 500 600 L f fR 0 f EWK
fit result data
-1 = 36 pb int L = 7 TeV s CMS, 0 0.2 0.4 0.6 0.8 1 1.2 Events / 0.1 0 100 200 300 400 500 600 L f fR 0 f EWK
fit result data
-1 = 36 pb int L = 7 TeV s CMS, ) + µ ( P L
FIG. 2 (color online). Fit results using 36 pb1 of collision data for the LPðÞ (top) and LPðþÞ (bottom) distributions. The left-handed, right-handed, and longitudinal W components, with normalization as determined by the fit, are represented by the dashed, dotted, and dash-dotted lines, respectively. The shaded distribution shows the EWK backgrounds. The solid line represents the sum of all individual components and can be directly compared with the data distribution (circles).
- f0 0 0.1 0.2 0.3 0.4 0.5 -1 = 36 pb int = 7 TeV, L s CMS, -W R - f L f -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 +f0 0 0.1 0.2 0.3 0.4 0.5 + W
FIG. 3 (color online). The muon fit result (black dot) in the ½ðfL fRÞ; f0 plane for negatively charged (top) and positively charged (bottom) leptons. The 68% confidence level contours for the statistical and total uncertainties are shown by the green shaded region and the black contour, respectively. The disal-lowed region is hatched.
combined fit results. The muon fit result yields the most precise measurement: ðfLfRÞ¼0:2400:036ðstatÞ 0:031ðsystÞ and f
0 ¼ 0:183 0:087ðstatÞ 0:123ðsystÞ
for negatively charged W bosons and ðfL fRÞþ ¼
0:310 0:036ðstatÞ 0:017ðsystÞ and fþ
0 ¼ 0:171
0:085ðstatÞ 0:099ðsystÞ for positively charged W bosons. This measurement establishes a difference between the left-handed and right-handed polarization parameters with a significance of 7.8 standard deviations for Wþ bosons and 5.1 standard deviations for W bosons. This is the first observation that high-pTbosons produced in pp
collisions are predominantly left-handed, as expected in the standard model.
We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes and acknowledge sup-port 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, ME, and HIP (Finland); CEA and
CNRS/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); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, and Uzbekistan); MST and MAE (Russia);
MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei);
TUBITAK and TAEK (Turkey); STFC (United
Kingdom); DOE and NSF (USA).
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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,2H. Rohringer,2R. Scho¨fbeck,2
J. Strauss,2A. Taurok,2F. Teischinger,2P. Wagner,2W. Waltenberger,2G. Walzel,2E. Widl,2C.-E. Wulz,2 V. Mossolov,3N. Shumeiko,3J. Suarez Gonzalez,3L. Benucci,4E. A. De Wolf,4X. Janssen,4J. Maes,4T. Maes,4
L. Mucibello,4S. Ochesanu,4B. Roland,4R. Rougny,4M. Selvaggi,4H. Van Haevermaet,4P. Van Mechelen,4 N. Van Remortel,4F. Blekman,5S. Blyweert,5J. D’Hondt,5O. Devroede,5R. Gonzalez Suarez,5A. Kalogeropoulos,5
M. Maes,5W. Van Doninck,5P. Van Mulders,5G. P. Van Onsem,5I. Villella,5O. Charaf,6B. Clerbaux,6 G. De Lentdecker,6V. Dero,6A. P. R. Gay,6G. H. Hammad,6T. Hreus,6P. E. Marage,6L. Thomas,6C. Vander Velde,6
P. Vanlaer,6V. Adler,7A. Cimmino,7S. Costantini,7M. Grunewald,7B. Klein,7J. Lellouch,7A. Marinov,7 J. Mccartin,7D. Ryckbosch,7F. Thyssen,7M. Tytgat,7L. Vanelderen,7P. Verwilligen,7S. Walsh,7N. Zaganidis,7
S. Basegmez,8G. Bruno,8J. Caudron,8L. Ceard,8E. Cortina Gil,8J. De Favereau De Jeneret,8C. Delaere,8,b D. Favart,8A. Giammanco,8G. Gre´goire,8J. Hollar,8V. Lemaitre,8J. Liao,8O. Militaru,8S. Ovyn,8D. Pagano,8 A. Pin,8K. Piotrzkowski,8N. Schul,8N. Beliy,9T. Caebergs,9E. Daubie,9G. A. Alves,10D. De Jesus Damiao,10 M. E. Pol,10M. H. G. Souza,10W. Carvalho,11E. M. Da Costa,11C. De Oliveira Martins,11S. Fonseca De Souza,11
L. Mundim,11H. Nogima,11V. Oguri,11W. L. Prado Da Silva,11A. Santoro,11S. M. Silva Do Amaral,11 A. Sznajder,11F. Torres Da Silva De Araujo,11F. A. Dias,12T. R. Fernandez Perez Tomei,12E. M. Gregores,12,c C. Lagana,12F. Marinho,12P. G. Mercadante,12,cS. F. Novaes,12Sandra S. Padula,12N. Darmenov,13,bL. Dimitrov,13
V. Genchev,13,bP. Iaydjiev,13,bS. Piperov,13M. Rodozov,13S. Stoykova,13G. Sultanov,13V. Tcholakov,13 R. Trayanov,13I. Vankov,13A. Dimitrov,14R. Hadjiiska,14A. Karadzhinova,14V. Kozhuharov,14L. Litov,14 M. Mateev,14B. Pavlov,14P. Petkov,14J. G. Bian,15G. M. Chen,15H. S. Chen,15C. H. Jiang,15D. Liang,15S. Liang,15
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D. Lelas,18K. Lelas,18R. Plestina,18,dD. Polic,18I. Puljak,18Z. Antunovic,19M. Dzelalija,19V. Brigljevic,20 S. Duric,20K. Kadija,20S. Morovic,20A. Attikis,21M. Galanti,21J. Mousa,21C. Nicolaou,21F. Ptochos,21
P. A. Razis,21M. Finger,22M. Finger, Jr.,22Y. Assran,23,eS. Khalil,23,fM. A. Mahmoud,23,gA. Hektor,24 M. Kadastik,24M. Mu¨ntel,24M. Raidal,24L. Rebane,24V. Azzolini,25P. Eerola,25G. Fedi,25S. Czellar,26 J. Ha¨rko¨nen,26A. Heikkinen,26V. Karima¨ki,26R. Kinnunen,26M. J. Kortelainen,26T. Lampe´n,26K. Lassila-Perini,26 S. Lehti,26T. Linde´n,26P. Luukka,26T. Ma¨enpa¨a¨,26E. Tuominen,26J. Tuominiemi,26E. Tuovinen,26D. Ungaro,26 L. Wendland,26K. Banzuzi,27A. Korpela,27T. Tuuva,27D. Sillou,28M. Besancon,29S. Choudhury,29M. Dejardin,29
D. Denegri,29B. Fabbro,29J. L. Faure,29F. Ferri,29S. Ganjour,29F. X. Gentit,29A. Givernaud,29P. Gras,29 G. Hamel de Monchenault,29P. Jarry,29E. Locci,29J. Malcles,29M. Marionneau,29L. Millischer,29J. Rander,29
A. Rosowsky,29I. Shreyber,29M. Titov,29P. Verrecchia,29S. Baffioni,30F. Beaudette,30L. Benhabib,30 L. Bianchini,30M. Bluj,30,hC. 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,iA. Zabi,30J.-L. Agram,31,jJ. Andrea,31D. Bloch,31 D. Bodin,31J.-M. Brom,31M. Cardaci,31E. C. Chabert,31C. Collard,31E. Conte,31,jF. Drouhin,31,jC. Ferro,31 J.-C. Fontaine,31,jD. Gele´,31U. Goerlach,31S. Greder,31P. Juillot,31M. Karim,31,jA.-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,33D. Lomidze,34G. Anagnostou,35M. Edelhoff,35
L. Feld,35N. Heracleous,35O. Hindrichs,35R. Jussen,35K. Klein,35J. Merz,35N. Mohr,35A. Ostapchuk,35 A. Perieanu,35F. Raupach,35J. Sammet,35S. Schael,35D. Sprenger,35H. Weber,35M. Weber,35B. Wittmer,35 M. Ata,36W. Bender,36E. Dietz-Laursonn,36M. Erdmann,36J. Frangenheim,36T. Hebbeker,36A. Hinzmann,36 K. Hoepfner,36T. Klimkovich,36D. Klingebiel,36P. Kreuzer,36D. Lanske,36,aC. Magass,36M. Merschmeyer,36
A. Meyer,36P. Papacz,36H. Pieta,36H. Reithler,36S. A. Schmitz,36L. Sonnenschein,36J. Steggemann,36 D. Teyssier,36M. Bontenackels,37M. Davids,37M. Duda,37G. Flu¨gge,37H. Geenen,37M. Giffels,37 W. Haj Ahmad,37D. Heydhausen,37T. Kress,37Y. Kuessel,37A. Linn,37A. Nowack,37L. Perchalla,37O. Pooth,37
J. Rennefeld,37P. Sauerland,37A. Stahl,37M. Thomas,37D. Tornier,37M. H. Zoeller,37M. Aldaya Martin,38 W. Behrenhoff,38U. Behrens,38M. Bergholz,38,kA. Bethani,38K. Borras,38A. Cakir,38A. Campbell,38E. Castro,38
D. Dammann,38G. Eckerlin,38D. Eckstein,38A. Flossdorf,38G. Flucke,38A. Geiser,38J. Hauk,38H. Jung,38,b M. Kasemann,38I. Katkov,38,lP. Katsas,38C. Kleinwort,38H. Kluge,38A. Knutsson,38M. Kra¨mer,38D. Kru¨cker,38
E. Kuznetsova,38W. Lange,38W. Lohmann,38,kR. Mankel,38M. Marienfeld,38I.-A. Melzer-Pellmann,38 A. B. Meyer,38J. Mnich,38A. Mussgiller,38J. Olzem,38D. Pitzl,38A. Raspereza,38A. Raval,38M. Rosin,38 R. Schmidt,38,kT. Schoerner-Sadenius,38N. Sen,38A. Spiridonov,38M. Stein,38J. Tomaszewska,38R. Walsh,38
C. Wissing,38C. Autermann,39V. Blobel,39S. Bobrovskyi,39J. Draeger,39H. Enderle,39U. Gebbert,39 K. Kaschube,39G. Kaussen,39R. Klanner,39J. Lange,39B. Mura,39S. Naumann-Emme,39F. Nowak,39N. Pietsch,39 C. Sander,39H. Schettler,39P. Schleper,39M. Schro¨der,39T. Schum,39J. Schwandt,39H. Stadie,39G. Steinbru¨ck,39
J. Thomsen,39C. Barth,40J. Bauer,40V. Buege,40T. Chwalek,40W. De Boer,40A. Dierlamm,40G. Dirkes,40 M. Feindt,40J. Gruschke,40C. Hackstein,40F. Hartmann,40M. Heinrich,40H. Held,40K. H. Hoffmann,40S. Honc,40
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,40M. Schmanau,40G. Schott,40H. J. Simonis,40F. M. Stober,40D. Troendle,40 J. Wagner-Kuhr,40T. Weiler,40M. Zeise,40V. Zhukov,40,lE. B. Ziebarth,40G. Daskalakis,41T. Geralis,41 S. Kesisoglou,41A. Kyriakis,41D. Loukas,41I. Manolakos,41A. Markou,41C. Markou,41C. Mavrommatis,41 E. Ntomari,41E. Petrakou,41L. Gouskos,42T. J. Mertzimekis,42A. Panagiotou,42E. Stiliaris,42I. Evangelou,43 C. Foudas,43P. Kokkas,43N. Manthos,43I. Papadopoulos,43V. Patras,43F. A. Triantis,43A. Aranyi,44G. Bencze,44
L. Boldizsar,44C. Hajdu,44,bP. Hidas,44D. Horvath,44,mA. Kapusi,44K. Krajczar,44,nF. Sikler,44,bG. I. Veres,44,n G. Vesztergombi,44,nN. Beni,45J. Molnar,45J. Palinkas,45Z. Szillasi,45V. Veszpremi,45P. Raics,46Z. L. Trocsanyi,46 B. Ujvari,46S. Bansal,47S. 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. B. Singh,47S. P. Singh,47S. Ahuja,48 S. Bhattacharya,48B. C. Choudhary,48P. Gupta,48S. Jain,48S. Jain,48A. Kumar,48K. Ranjan,48R. K. Shivpuri,48
R. K. Choudhury,49D. Dutta,49S. Kailas,49V. Kumar,49A. K. Mohanty,49,bL. M. Pant,49P. Shukla,49T. Aziz,50 M. Guchait,50,oA. Gurtu,50M. Maity,50,pD. Majumder,50G. Majumder,50K. Mazumdar,50G. B. Mohanty,50
A. Saha,50K. Sudhakar,50N. Wickramage,50S. Banerjee,51S. Dugad,51N. K. Mondal,51H. Arfaei,52 H. Bakhshiansohi,52,qS. M. Etesami,52A. Fahim,52,qM. Hashemi,52A. Jafari,52,qM. Khakzad,52A. Mohammadi,52,r
M. Mohammadi Najafabadi,52S. Paktinat Mehdiabadi,52B. Safarzadeh,52M. Zeinali,52,sM. Abbrescia,53a,53b L. Barbone,53a,53bC. Calabria,53a,53bA. Colaleo,53aD. Creanza,53a,53cN. De Filippis,53a,53c,bM. De Palma,53a,53b L. Fiore,53aG. Iaselli,53a,53cL. Lusito,53a,53bG. Maggi,53a,53cM. Maggi,53aN. Manna,53a,53bB. Marangelli,53a,53b
S. My,53a,53cS. Nuzzo,53a,53bN. Pacifico,53a,53bG. A. Pierro,53aA. Pompili,53a,53bG. Pugliese,53a,53c F. Romano,53a,53cG. Roselli,53a,53bG. Selvaggi,53a,53bL. Silvestris,53aR. Trentadue,53aS. Tupputi,53a,53bG. Zito,53a
G. Abbiendi,54aA. C. Benvenuti,54aD. Bonacorsi,54aS. Braibant-Giacomelli,54a,54bL. Brigliadori,54a P. Capiluppi,54a,54bA. Castro,54a,54bF. R. Cavallo,54aM. Cuffiani,54a,54bG. M. Dallavalle,54aF. Fabbri,54a
A. Fanfani,54a,54bD. Fasanella,54aP. Giacomelli,54aM. Giunta,54aS. Marcellini,54aG. Masetti,54b M. Meneghelli,54a,54bA. Montanari,54aF. L. Navarria,54a,54bF. Odorici,54aA. Perrotta,54aF. Primavera,54a A. M. Rossi,54a,54bT. Rovelli,54a,54bG. Siroli,54a,54bR. Travaglini,54a,54bS. Albergo,55a,55bG. Cappello,55a,55b M. Chiorboli,55a,55b,bS. Costa,55a,55bA. Tricomi,55a,55bC. Tuve,55aG. Barbagli,56aV. Ciulli,56a,56bC. Civinini,56a
R. D’Alessandro,56a,56bE. Focardi,56a,56bS. Frosali,56a,56bE. Gallo,56aS. Gonzi,56a,56bP. Lenzi,56a,56b M. Meschini,56aS. Paoletti,56aG. Sguazzoni,56aA. Tropiano,56a,bL. Benussi,57S. Bianco,57S. Colafranceschi,57,t
F. Fabbri,57D. Piccolo,57P. Fabbricatore,58R. Musenich,58A. Benaglia,59a,59bF. De Guio,59a,59b,b L. Di Matteo,59a,59bS. Gennai,59a,bA. Ghezzi,59a,59bS. Malvezzi,59aA. Martelli,59a,59bA. Massironi,59a,59b D. Menasce,59aL. Moroni,59aM. Paganoni,59a,59bD. Pedrini,59aS. Ragazzi,59a,59bN. Redaelli,59aS. Sala,59a T. Tabarelli de Fatis,59a,59bS. Buontempo,60aC. A. Carrillo Montoya,60a,bN. Cavallo,60a,uA. De Cosa,60a,60b F. Fabozzi,60a,uA. O. M. Iorio,60a,bL. Lista,60aM. Merola,60a,60bP. Paolucci,60aP. Azzi,61aN. Bacchetta,61a P. Bellan,61a,61bD. Bisello,61a,61bA. Branca,61aR. Carlin,61a,61bP. Checchia,61aM. De Mattia,61a,61bT. Dorigo,61a
U. Dosselli,61aF. Gasparini,61a,61bU. Gasparini,61a,61bA. Gozzelino,61aS. Lacaprara,61aI. Lazzizzera,61a,61c M. Margoni,61a,61bM. Mazzucato,61aA. T. Meneguzzo,61a,61bM. Nespolo,61a,bL. Perrozzi,61a,bN. Pozzobon,61a,61b
P. Ronchese,61a,61bF. Simonetto,61a,61bE. Torassa,61aM. Tosi,61a,61bA. Triossi,61aS. Vanini,61a,61bP. Zotto,61a,61b G. Zumerle,61a,61bP. Baesso,62a,62bU. Berzano,62aS. P. Ratti,62a,62bC. Riccardi,62a,62bP. Torre,62a,62bP. Vitulo,62a,62b
C. Viviani,62a,62bM. Biasini,63a,63bG. M. Bilei,63aB. Caponeri,63a,63bL. Fano`,63a,63bP. Lariccia,63a,63b A. Lucaroni,63a,63b,bG. Mantovani,63a,63bM. Menichelli,63aA. Nappi,63a,63bF. Romeo,63a,63bA. Santocchia,63a,63b
S. Taroni,63a,63b,bM. Valdata,63a,63bP. Azzurri,64a,64cG. Bagliesi,64aJ. Bernardini,64a,64bT. Boccali,64a,b G. Broccolo,64a,64cR. Castaldi,64aR. T. D’Agnolo,64a,64cR. Dell’Orso,64aF. Fiori,64a,64bL. Foa`,64a,64cA. Giassi,64a
A. Kraan,64aF. Ligabue,64a,64cT. Lomtadze,64aL. Martini,64a,vA. Messineo,64a,64bF. Palla,64aM. Peruzzi,64a G. Segneri,64aA. T. Serban,64aP. Spagnolo,64aR. Tenchini,64aG. Tonelli,64a,64b,bA. Venturi,64a,bP. G. Verdini,64a L. Barone,65a,65bF. Cavallari,65aD. Del Re,65a,65bE. Di Marco,65a,65bM. Diemoz,65aD. Franci,65a,65bM. Grassi,65a,b
E. Longo,65a,65bS. Nourbakhsh,65aG. Organtini,65a,65bF. Pandolfi,65a,65b,bR. Paramatti,65aS. Rahatlou,65a,65b C. Rovelli,65a,bN. Amapane,66a,66bR. Arcidiacono,66a,66cS. Argiro,66a,66bM. Arneodo,66a,66cC. Biino,66a
C. Botta,66a,66b,bN. Cartiglia,66aR. Castello,66a,66bM. Costa,66a,66bN. Demaria,66aA. Graziano,66a,66b,b C. Mariotti,66aM. Marone,66a,66bS. Maselli,66aE. Migliore,66a,66bG. Mila,66a,66bV. Monaco,66a,66bM. Musich,66a,66b
M. M. Obertino,66a,66cN. Pastrone,66aM. Pelliccioni,66a,66bA. Romero,66a,66bM. Ruspa,66a,66cR. Sacchi,66a,66b V. Sola,66a,66bA. Solano,66a,66bA. Staiano,66aA. Vilela Pereira,66aS. Belforte,67aF. Cossutti,67a G. Della Ricca,67a,67bB. Gobbo,67aD. Montanino,67a,67bA. Penzo,67aS. G. Heo,68S. K. Nam,68S. Chang,69 J. Chung,69D. H. Kim,69G. N. Kim,69J. E. Kim,69D. J. Kong,69H. Park,69S. R. Ro,69D. Son,69D. C. Son,69 T. Son,69Zero Kim,70J. Y. Kim,70S. Song,70S. Choi,71B. Hong,71M. S. Jeong,71M. Jo,71H. Kim,71J. H. Kim,71
T. J. Kim,71K. S. Lee,71D. H. Moon,71S. K. Park,71H. B. Rhee,71E. Seo,71S. Shin,71K. S. Sim,71M. Choi,72 S. Kang,72H. Kim,72C. Park,72I. C. Park,72S. Park,72G. Ryu,72Y. Choi,73Y. K. Choi,73J. Goh,73M. S. Kim,73 E. Kwon,73J. Lee,73S. Lee,73H. Seo,73I. Yu,73M. J. Bilinskas,74I. Grigelionis,74M. Janulis,74D. Martisiute,74
P. Petrov,74T. Sabonis,74H. Castilla-Valdez,75E. De La Cruz-Burelo,75I. Heredia-de La Cruz,75 R. Lopez-Fernandez,75R. Magan˜a Villalba,75A. Sa´nchez-Herna´ndez,75L. M. Villasenor-Cendejas,75 S. Carrillo Moreno,76F. Vazquez Valencia,76H. A. Salazar Ibarguen,77E. Casimiro Linares,78A. Morelos Pineda,78
M. A. Reyes-Santos,78D. Krofcheck,79J. Tam,79C. H. Yiu,79P. H. Butler,80R. Doesburg,80H. Silverwood,80 M. Ahmad,81I. Ahmed,81M. I. Asghar,81H. R. Hoorani,81W. A. Khan,81T. Khurshid,81S. Qazi,81G. Brona,82
M. Cwiok,82W. Dominik,82K. Doroba,82A. Kalinowski,82M. Konecki,82J. Krolikowski,82T. Frueboes,83 R. Gokieli,83M. Go´rski,83M. Kazana,83K. Nawrocki,83K. Romanowska-Rybinska,83M. Szleper,83G. Wrochna,83
P. Zalewski,83N. Almeida,84P. Bargassa,84A. David,84P. Faccioli,84P. G. Ferreira Parracho,84M. Gallinaro,84 P. Musella,84A. Nayak,84P. Q. Ribeiro,84J. Seixas,84J. Varela,84S. Afanasiev,85I. Belotelov,85P. Bunin,85 I. Golutvin,85A. Kamenev,85V. Karjavin,85G. Kozlov,85A. Lanev,85P. Moisenz,85V. Palichik,85V. Perelygin,85
S. Shmatov,85V. Smirnov,85A. Volodko,85A. Zarubin,85V. Golovtsov,86Y. Ivanov,86V. Kim,86P. Levchenko,86 V. Murzin,86V. Oreshkin,86I. Smirnov,86V. Sulimov,86L. Uvarov,86S. Vavilov,86A. Vorobyev,86A. Vorobyev,86
Yu. Andreev,87A. Dermenev,87S. Gninenko,87N. Golubev,87M. Kirsanov,87N. Krasnikov,87V. Matveev,87 A. Pashenkov,87A. Toropin,87S. Troitsky,87V. Epshteyn,88V. Gavrilov,88V. Kaftanov,88,aM. Kossov,88,b A. Krokhotin,88N. Lychkovskaya,88V. Popov,88G. Safronov,88S. Semenov,88V. Stolin,88E. Vlasov,88A. Zhokin,88
E. Boos,89M. Dubinin,89,wL. Dudko,89A. Ershov,89A. Gribushin,89O. Kodolova,89I. Lokhtin,89A. Markina,89 S. Obraztsov,89M. Perfilov,89S. Petrushanko,89L. Sarycheva,89V. Savrin,89A. Snigirev,89V. Andreev,90 M. Azarkin,90I. Dremin,90M. Kirakosyan,90A. Leonidov,90S. V. Rusakov,90A. Vinogradov,90I. Azhgirey,91
S. Bitioukov,91V. Grishin,91,bV. Kachanov,91D. Konstantinov,91A. Korablev,91V. Krychkine,91V. Petrov,91 R. Ryutin,91S. Slabospitsky,91A. Sobol,91L. Tourtchanovitch,91S. Troshin,91N. Tyurin,91A. Uzunian,91 A. Volkov,91P. Adzic,92,xM. Djordjevic,92D. Krpic,92,xJ. Milosevic,92M. Aguilar-Benitez,93J. Alcaraz Maestre,93
P. Arce,93C. Battilana,93E. Calvo,93M. Cepeda,93M. Cerrada,93M. Chamizo Llatas,93N. Colino,93 B. De La Cruz,93A. Delgado Peris,93C. Diez Pardos,93D. Domı´nguez Va´zquez,93C. Fernandez Bedoya,93
J. P. Ferna´ndez Ramos,93A. Ferrando,93J. Flix,93M. C. Fouz,93P. Garcia-Abia,93O. Gonzalez Lopez,93 S. Goy Lopez,93J. M. Hernandez,93M. I. Josa,93G. Merino,93J. Puerta Pelayo,93I. Redondo,93L. Romero,93
J. Santaolalla,93M. S. Soares,93C. Willmott,93C. Albajar,94G. Codispoti,94J. F. de Troco´niz,94J. Cuevas,95 J. Fernandez Menendez,95S. Folgueras,95I. Gonzalez Caballero,95L. Lloret Iglesias,95J. M. Vizan Garcia,95 J. A. Brochero Cifuentes,96I. J. Cabrillo,96A. Calderon,96S. H. Chuang,96J. Duarte Campderros,96M. Felcini,96,y M. Fernandez,96G. Gomez,96J. Gonzalez Sanchez,96C. Jorda,96P. Lobelle Pardo,96A. Lopez Virto,96J. Marco,96
R. Marco,96C. Martinez Rivero,96F. Matorras,96F. J. Munoz Sanchez,96J. Piedra Gomez,96,zT. Rodrigo,96 A. Y. Rodrı´guez-Marrero,96A. Ruiz-Jimeno,96L. Scodellaro,96M. Sobron Sanudo,96I. Vila,96 R. Vilar Cortabitarte,96D. Abbaneo,97E. Auffray,97G. Auzinger,97P. Baillon,97A. H. Ball,97D. Barney,97 A. J. Bell,97,aaD. Benedetti,97C. Bernet,97,dW. Bialas,97P. Bloch,97A. Bocci,97S. Bolognesi,97M. Bona,97 H. Breuker,97K. Bunkowski,97T. Camporesi,97G. Cerminara,97J. A. Coarasa Perez,97B. Cure´,97D. D’Enterria,97
A. De Roeck,97S. Di Guida,97N. Dupont-Sagorin,97A. Elliott-Peisert,97B. Frisch,97W. Funk,97A. Gaddi,97 G. Georgiou,97H. Gerwig,97D. Gigi,97K. Gill,97D. Giordano,97F. Glege,97R. Gomez-Reino Garrido,97 M. Gouzevitch,97P. Govoni,97S. Gowdy,97L. Guiducci,97M. Hansen,97C. Hartl,97J. Harvey,97J. Hegeman,97 B. Hegner,97H. F. Hoffmann,97A. Honma,97V. Innocente,97P. Janot,97K. Kaadze,97E. Karavakis,97P. Lecoq,97 C. Lourenc¸o,97T. Ma¨ki,97M. Malberti,97L. Malgeri,97M. Mannelli,97L. Masetti,97A. Maurisset,97F. Meijers,97 S. Mersi,97E. Meschi,97R. Moser,97M. U. Mozer,97M. Mulders,97E. Nesvold,97,bM. Nguyen,97T. Orimoto,97 L. Orsini,97E. Perez,97A. Petrilli,97A. Pfeiffer,97M. Pierini,97M. Pimia¨,97D. Piparo,97G. Polese,97A. Racz,97
J. Rodrigues Antunes,97G. Rolandi,97,bbT. Rommerskirchen,97M. Rovere,97H. Sakulin,97C. Scha¨fer,97 C. Schwick,97I. Segoni,97A. Sharma,97P. Siegrist,97M. Simon,97P. Sphicas,97,ccM. Spiropulu,97,wM. Stoye,97 M. Tadel,97P. Tropea,97A. Tsirou,97P. Vichoudis,97M. Voutilainen,97W. D. Zeuner,97W. Bertl,98K. Deiters,98
W. Erdmann,98K. Gabathuler,98R. Horisberger,98Q. Ingram,98H. C. Kaestli,98S. Ko¨nig,98D. Kotlinski,98 U. Langenegger,98F. Meier,98D. Renker,98T. Rohe,98J. Sibille,98,ddA. Starodumov,98,eeP. Bortignon,99
L. Caminada,99,ffN. Chanon,99Z. Chen,99S. Cittolin,99G. Dissertori,99M. Dittmar,99J. Eugster,99 K. Freudenreich,99C. Grab,99A. Herve´,99W. Hintz,99P. Lecomte,99W. Lustermann,99C. Marchica,99,ff
P. Martinez Ruiz del Arbol,99P. Meridiani,99P. Milenovic,99,ggF. Moortgat,99C. Na¨geli,99,ffP. Nef,99 F. Nessi-Tedaldi,99L. Pape,99F. Pauss,99T. Punz,99A. Rizzi,99F. J. Ronga,99M. Rossini,99L. Sala,99 A. K. Sanchez,99M.-C. Sawley,99B. Stieger,99L. Tauscher,99,aA. Thea,99K. Theofilatos,99D. Treille,99 C. Urscheler,99R. Wallny,99M. Weber,99L. Wehrli,99J. Weng,99E. Aguilo´,100C. Amsler,100V. Chiochia,100
S. De Visscher,100C. Favaro,100M. Ivova Rikova,100B. Millan Mejias,100P. Otiougova,100C. Regenfus,100 P. Robmann,100A. Schmidt,100H. Snoek,100Y. H. Chang,101K. H. Chen,101S. Dutta,101C. M. Kuo,101S. W. Li,101
W. Lin,101Z. K. Liu,101Y. J. Lu,101D. Mekterovic,101R. Volpe,101J. H. Wu,101S. S. Yu,101P. Bartalini,102 P. Chang,102Y. H. Chang,102Y. W. Chang,102Y. Chao,102K. F. Chen,102W.-S. Hou,102Y. Hsiung,102K. Y. Kao,102 Y. J. Lei,102R.-S. Lu,102J. G. Shiu,102Y. M. Tzeng,102M. Wang,102A. Adiguzel,103M. N. Bakirci,103,hhS. Cerci,103,ii
C. Dozen,103I. Dumanoglu,103E. Eskut,103S. Girgis,103G. Gokbulut,103I. Hos,103E. E. Kangal,103 A. Kayis Topaksu,103G. Onengut,103K. Ozdemir,103S. Ozturk,103A. Polatoz,103K. Sogut,103,jjD. Sunar Cerci,103,ii
B. Tali,103,iiH. Topakli,103,hhD. Uzun,103L. N. Vergili,103M. Vergili,103I. V. Akin,104T. Aliev,104S. Bilmis,104 M. Deniz,104H. Gamsizkan,104A. M. Guler,104K. Ocalan,104A. Ozpineci,104M. Serin,104R. Sever,104 U. E. Surat,104E. Yildirim,104M. Zeyrek,104M. Deliomeroglu,105D. Demir,105,kkE. Gu¨lmez,105B. Isildak,105 M. Kaya,105,llO. Kaya,105,llS. Ozkorucuklu,105,mmN. Sonmez,105,nnL. Levchuk,106F. Bostock,107J. J. Brooke,107
T. L. Cheng,107E. Clement,107D. Cussans,107R. Frazier,107J. Goldstein,107M. Grimes,107M. Hansen,107 D. Hartley,107G. P. Heath,107H. F. Heath,107L. Kreczko,107S. Metson,107D. M. Newbold,107,ooK. Nirunpong,107
A. Poll,107S. Senkin,107V. J. Smith,107S. Ward,107L. Basso,108,ppK. W. Bell,108A. Belyaev,108,ppC. Brew,108 R. M. Brown,108B. Camanzi,108D. J. A. Cockerill,108J. A. Coughlan,108K. Harder,108S. Harper,108J. Jackson,108
B. W. Kennedy,108E. Olaiya,108D. Petyt,108B. C. Radburn-Smith,108C. H. Shepherd-Themistocleous,108 I. R. Tomalin,108W. J. Womersley,108S. D. Worm,108R. Bainbridge,109G. Ball,109J. Ballin,109R. Beuselinck,109
O. Buchmuller,109D. Colling,109N. Cripps,109M. Cutajar,109G. Davies,109M. Della Negra,109W. Ferguson,109 J. Fulcher,109D. Futyan,109A. Gilbert,109A. Guneratne Bryer,109G. Hall,109Z. Hatherell,109J. Hays,109G. Iles,109 M. Jarvis,109G. Karapostoli,109L. Lyons,109B. C. MacEvoy,109A.-M. Magnan,109J. Marrouche,109B. Mathias,109 R. Nandi,109J. Nash,109A. Nikitenko,109,eeA. Papageorgiou,109M. Pesaresi,109K. Petridis,109M. Pioppi,109,qq
D. M. Raymond,109S. Rogerson,109N. Rompotis,109A. Rose,109M. J. Ryan,109C. Seez,109P. Sharp,109 A. Sparrow,109A. Tapper,109S. Tourneur,109M. Vazquez Acosta,109T. Virdee,109S. Wakefield,109N. Wardle,109
D. Wardrope,109T. Whyntie,109M. Barrett,110M. Chadwick,110J. E. Cole,110P. R. Hobson,110A. Khan,110 P. Kyberd,110D. Leslie,110W. Martin,110I. D. Reid,110L. Teodorescu,110K. Hatakeyama,111T. Bose,112 E. Carrera Jarrin,112C. Fantasia,112A. Heister,112J. St. John,112P. Lawson,112D. Lazic,112J. Rohlf,112D. Sperka,112
L. Sulak,112A. Avetisyan,113S. Bhattacharya,113J. P. Chou,113D. Cutts,113A. Ferapontov,113U. Heintz,113 S. Jabeen,113G. Kukartsev,113G. Landsberg,113M. Narain,113D. Nguyen,113M. Segala,113T. Sinthuprasith,113 T. Speer,113K. V. Tsang,113R. Breedon,114M. Calderon De La Barca Sanchez,114S. Chauhan,114M. Chertok,114 J. Conway,114P. T. Cox,114J. Dolen,114R. Erbacher,114E. Friis,114W. Ko,114A. Kopecky,114R. Lander,114H. Liu,114
S. Maruyama,114T. Miceli,114M. Nikolic,114D. Pellett,114J. Robles,114S. Salur,114T. Schwarz,114M. Searle,114 J. Smith,114M. Squires,114M. Tripathi,114R. Vasquez Sierra,114C. Veelken,114V. Andreev,115K. Arisaka,115 D. Cline,115R. Cousins,115A. Deisher,115J. Duris,115S. Erhan,115C. Farrell,115J. Hauser,115M. Ignatenko,115
C. Jarvis,115C. Plager,115G. Rakness,115P. Schlein,115,aJ. Tucker,115V. Valuev,115J. Babb,116A. Chandra,116 R. Clare,116J. Ellison,116J. W. Gary,116F. Giordano,116G. Hanson,116G. Y. Jeng,116S. C. Kao,116F. Liu,116
H. Liu,116O. R. Long,116A. Luthra,116H. Nguyen,116B. C. Shen,116,aR. Stringer,116J. Sturdy,116 S. Sumowidagdo,116R. Wilken,116S. Wimpenny,116W. Andrews,117J. G. Branson,117G. B. Cerati,117
E. Dusinberre,117D. Evans,117F. Golf,117A. Holzner,117R. Kelley,117M. Lebourgeois,117J. Letts,117 B. Mangano,117S. Padhi,117C. Palmer,117G. Petrucciani,117H. Pi,117M. Pieri,117R. Ranieri,117M. Sani,117 V. Sharma,117S. Simon,117Y. Tu,117A. Vartak,117S. Wasserbaech,117,rrF. Wu¨rthwein,117A. Yagil,117J. Yoo,117
D. Barge,118R. Bellan,118C. Campagnari,118M. D’Alfonso,118T. Danielson,118K. Flowers,118P. Geffert,118 J. Incandela,118C. Justus,118P. Kalavase,118S. A. Koay,118D. Kovalskyi,118V. Krutelyov,118S. Lowette,118 N. Mccoll,118V. Pavlunin,118F. Rebassoo,118J. Ribnik,118J. Richman,118R. Rossin,118D. Stuart,118W. To,118 J. R. Vlimant,118A. Apresyan,119A. Bornheim,119J. Bunn,119Y. Chen,119M. Gataullin,119Y. Ma,119A. Mott,119 H. B. Newman,119C. Rogan,119K. Shin,119V. Timciuc,119P. Traczyk,119J. Veverka,119R. Wilkinson,119Y. Yang,119
R. Y. Zhu,119B. Akgun,120R. Carroll,120T. Ferguson,120Y. Iiyama,120D. W. Jang,120S. Y. Jun,120Y. F. Liu,120 M. Paulini,120J. Russ,120H. Vogel,120I. Vorobiev,120J. P. Cumalat,121M. E. Dinardo,121B. R. Drell,121 C. J. Edelmaier,121W. T. Ford,121A. Gaz,121B. Heyburn,121E. Luiggi Lopez,121U. Nauenberg,121J. G. Smith,121
K. Stenson,121K. A. Ulmer,121S. R. Wagner,121S. L. Zang,121L. Agostino,122J. Alexander,122D. Cassel,122 A. Chatterjee,122S. Das,122N. Eggert,122L. K. Gibbons,122B. Heltsley,122W. Hopkins,122A. Khukhunaishvili,122 B. Kreis,122G. Nicolas Kaufman,122J. R. Patterson,122D. Puigh,122A. Ryd,122E. Salvati,122X. Shi,122W. Sun,122 W. D. Teo,122J. Thom,122J. Thompson,122J. Vaughan,122Y. Weng,122L. Winstrom,122P. Wittich,122A. Biselli,123
J. A. Bakken,124S. Banerjee,124L. A. T. Bauerdick,124A. Beretvas,124J. Berryhill,124P. C. Bhat,124I. Bloch,124 F. Borcherding,124K. Burkett,124J. N. Butler,124V. Chetluru,124H. W. K. Cheung,124F. Chlebana,124S. Cihangir,124
W. Cooper,124D. P. Eartly,124V. D. Elvira,124S. Esen,124I. Fisk,124J. Freeman,124Y. Gao,124E. Gottschalk,124 D. Green,124K. Gunthoti,124O. Gutsche,124J. Hanlon,124R. M. Harris,124J. Hirschauer,124B. Hooberman,124 H. Jensen,124M. Johnson,124U. Joshi,124R. Khatiwada,124B. Klima,124K. Kousouris,124S. Kunori,124S. Kwan,124 C. Leonidopoulos,124P. Limon,124D. Lincoln,124R. Lipton,124J. Lykken,124K. Maeshima,124J. M. Marraffino,124 D. Mason,124P. McBride,124T. Miao,124K. Mishra,124S. Mrenna,124Y. Musienko,124,ssC. Newman-Holmes,124
V. O’Dell,124R. Pordes,124O. Prokofyev,124N. Saoulidou,124E. Sexton-Kennedy,124S. Sharma,124 W. J. Spalding,124L. Spiegel,124P. Tan,124L. Taylor,124S. Tkaczyk,124L. Uplegger,124E. W. Vaandering,124
R. Vidal,124J. Whitmore,124W. Wu,124F. Yang,124F. Yumiceva,124J. C. Yun,124D. Acosta,125P. Avery,125 D. Bourilkov,125M. Chen,125M. De Gruttola,125G. P. Di Giovanni,125D. Dobur,125A. Drozdetskiy,125 R. D. Field,125M. Fisher,125Y. Fu,125I. K. Furic,125J. Gartner,125B. Kim,125J. Konigsberg,125A. Korytov,125
A. Kropivnitskaya,125T. Kypreos,125K. Matchev,125G. Mitselmakher,125L. Muniz,125C. Prescott,125 R. Remington,125M. Schmitt,125B. Scurlock,125P. Sellers,125N. Skhirtladze,125M. Snowball,125D. Wang,125 J. Yelton,125M. Zakaria,125C. Ceron,126V. Gaultney,126L. Kramer,126L. M. Lebolo,126S. Linn,126P. Markowitz,126
G. Martinez,126D. Mesa,126J. L. Rodriguez,126T. Adams,127A. Askew,127J. Bochenek,127J. Chen,127 B. Diamond,127S. V. Gleyzer,127J. Haas,127S. Hagopian,127V. Hagopian,127M. Jenkins,127K. F. Johnson,127
H. Prosper,127L. Quertenmont,127S. Sekmen,127V. Veeraraghavan,127M. M. Baarmand,128B. Dorney,128 S. Guragain,128M. Hohlmann,128H. Kalakhety,128R. Ralich,128I. Vodopiyanov,128M. R. Adams,129 I. M. Anghel,129L. Apanasevich,129Y. Bai,129V. E. Bazterra,129R. R. Betts,129J. Callner,129R. Cavanaugh,129 C. Dragoiu,129L. Gauthier,129C. E. Gerber,129S. Hamdan,129D. J. Hofman,129S. Khalatyan,129G. J. Kunde,129 F. Lacroix,129M. Malek,129C. O’Brien,129C. Silvestre,129A. Smoron,129D. Strom,129N. Varelas,129U. Akgun,130
E. A. Albayrak,130B. Bilki,130W. Clarida,130F. Duru,130C. K. Lae,130E. McCliment,130J.-P. Merlo,130 H. Mermerkaya,130,ttA. Mestvirishvili,130A. Moeller,130J. Nachtman,130C. R. Newsom,130E. Norbeck,130 J. Olson,130Y. Onel,130F. Ozok,130S. Sen,130J. Wetzel,130T. Yetkin,130K. Yi,130B. A. Barnett,131B. Blumenfeld,131 A. Bonato,131C. Eskew,131D. Fehling,131G. Giurgiu,131A. V. Gritsan,131Z. J. Guo,131G. Hu,131P. Maksimovic,131
S. Rappoccio,131M. Swartz,131N. V. Tran,131A. Whitbeck,131P. Baringer,132A. Bean,132G. Benelli,132 O. Grachov,132R. P. Kenny Iii,132M. Murray,132D. Noonan,132S. Sanders,132J. S. Wood,132V. Zhukova,132
A. f. Barfuss,133T. Bolton,133I. Chakaberia,133A. Ivanov,133S. Khalil,133M. Makouski,133Y. Maravin,133 S. Shrestha,133I. Svintradze,133Z. Wan,133J. Gronberg,134D. Lange,134D. Wright,134A. Baden,135 M. Boutemeur,135S. C. Eno,135D. Ferencek,135J. A. Gomez,135N. J. Hadley,135R. G. Kellogg,135M. Kirn,135
Y. Lu,135A. C. Mignerey,135K. Rossato,135P. Rumerio,135F. Santanastasio,135A. Skuja,135J. Temple,135 M. B. Tonjes,135S. C. Tonwar,135E. Twedt,135B. Alver,136G. Bauer,136J. Bendavid,136W. Busza,136E. Butz,136
I. A. Cali,136M. Chan,136V. Dutta,136P. Everaerts,136G. Gomez Ceballos,136M. Goncharov,136K. A. Hahn,136 P. Harris,136Y. Kim,136M. Klute,136Y.-J. Lee,136W. Li,136C. Loizides,136P. D. Luckey,136T. Ma,136S. Nahn,136
C. Paus,136D. Ralph,136C. Roland,136G. Roland,136M. Rudolph,136G. S. F. Stephans,136F. Sto¨ckli,136 K. Sumorok,136K. Sung,136E. A. Wenger,136S. Xie,136M. Yang,136Y. Yilmaz,136A. S. Yoon,136M. Zanetti,136 S. I. Cooper,137P. Cushman,137B. Dahmes,137A. De Benedetti,137P. R. Dudero,137G. Franzoni,137J. Haupt,137
K. Klapoetke,137Y. Kubota,137J. Mans,137V. Rekovic,137R. Rusack,137M. Sasseville,137A. Singovsky,137 L. M. Cremaldi,138R. Godang,138R. Kroeger,138L. Perera,138R. Rahmat,138D. A. Sanders,138D. Summers,138
K. Bloom,139S. Bose,139J. Butt,139D. R. Claes,139A. Dominguez,139M. Eads,139J. Keller,139T. Kelly,139 I. Kravchenko,139J. Lazo-Flores,139H. Malbouisson,139S. Malik,139G. R. Snow,139U. Baur,140A. Godshalk,140
I. Iashvili,140S. Jain,140A. Kharchilava,140A. Kumar,140S. P. Shipkowski,140K. Smith,140G. Alverson,141 E. Barberis,141D. Baumgartel,141O. Boeriu,141M. Chasco,141S. Reucroft,141J. Swain,141D. Trocino,141 D. Wood,141J. Zhang,141A. Anastassov,142A. Kubik,142N. Odell,142R. A. Ofierzynski,142B. Pollack,142 A. Pozdnyakov,142M. Schmitt,142S. Stoynev,142M. Velasco,142S. Won,142L. Antonelli,143D. Berry,143 M. Hildreth,143C. Jessop,143D. J. Karmgard,143J. Kolb,143T. Kolberg,143K. Lannon,143W. Luo,143S. Lynch,143
N. Marinelli,143D. M. Morse,143T. Pearson,143R. Ruchti,143J. Slaunwhite,143N. Valls,143M. Wayne,143 J. Ziegler,143B. Bylsma,144L. S. Durkin,144J. Gu,144C. Hill,144P. Killewald,144K. Kotov,144T. Y. Ling,144 M. Rodenburg,144G. Williams,144N. Adam,145E. Berry,145P. Elmer,145D. Gerbaudo,145V. Halyo,145P. Hebda,145 A. Hunt,145J. Jones,145E. Laird,145D. Lopes Pegna,145D. Marlow,145T. Medvedeva,145M. Mooney,145J. Olsen,145
P. Piroue´,145X. Quan,145H. Saka,145D. Stickland,145C. Tully,145J. S. Werner,145A. Zuranski,145J. G. Acosta,146 X. T. Huang,146A. Lopez,146H. Mendez,146S. Oliveros,146J. E. Ramirez Vargas,146A. Zatserklyaniy,146 E. Alagoz,147V. E. Barnes,147G. Bolla,147L. Borrello,147D. Bortoletto,147A. Everett,147A. F. Garfinkel,147 L. Gutay,147Z. Hu,147M. Jones,147O. Koybasi,147M. Kress,147A. T. Laasanen,147N. Leonardo,147C. Liu,147 V. Maroussov,147P. Merkel,147D. H. Miller,147N. Neumeister,147I. Shipsey,147D. Silvers,147A. Svyatkovskiy,147
H. D. Yoo,147J. Zablocki,147Y. Zheng,147P. Jindal,148N. Parashar,148C. Boulahouache,149V. Cuplov,149 K. M. Ecklund,149F. J. M. Geurts,149B. P. Padley,149R. Redjimi,149J. Roberts,149J. Zabel,149B. Betchart,150
A. Bodek,150Y. S. Chung,150R. Covarelli,150P. de Barbaro,150R. Demina,150Y. Eshaq,150H. Flacher,150 A. Garcia-Bellido,150P. Goldenzweig,150Y. Gotra,150J. Han,150A. Harel,150D. C. Miner,150D. Orbaker,150 G. Petrillo,150D. Vishnevskiy,150M. Zielinski,150A. Bhatti,151R. Ciesielski,151L. Demortier,151K. Goulianos,151
G. Lungu,151S. Malik,151C. Mesropian,151M. Yan,151O. Atramentov,152A. Barker,152D. Duggan,152 Y. Gershtein,152R. Gray,152E. Halkiadakis,152D. Hidas,152D. Hits,152A. Lath,152S. Panwalkar,152R. Patel,152
A. Richards,152K. Rose,152S. Schnetzer,152S. Somalwar,152R. Stone,152S. Thomas,152G. Cerizza,153 M. Hollingsworth,153S. Spanier,153Z. C. Yang,153A. York,153R. Eusebi,154J. Gilmore,154A. Gurrola,154 T. Kamon,154V. Khotilovich,154R. Montalvo,154I. Osipenkov,154Y. Pakhotin,154J. Pivarski,154A. Safonov,154 S. Sengupta,154A. Tatarinov,154D. Toback,154M. Weinberger,154N. Akchurin,155C. Bardak,155J. Damgov,155 C. Jeong,155K. Kovitanggoon,155S. W. Lee,155P. Mane,155Y. Roh,155A. Sill,155I. Volobouev,155R. Wigmans,155
E. Yazgan,155E. Appelt,156E. Brownson,156D. Engh,156C. Florez,156W. Gabella,156M. Issah,156W. Johns,156 P. Kurt,156C. Maguire,156A. Melo,156P. Sheldon,156B. Snook,156S. Tuo,156J. Velkovska,156M. W. Arenton,157
M. Balazs,157S. Boutle,157B. Cox,157B. Francis,157R. Hirosky,157A. Ledovskoy,157C. Lin,157C. Neu,157 R. Yohay,157S. Gollapinni,158R. Harr,158P. E. Karchin,158P. Lamichhane,158M. Mattson,158C. Milste`ne,158
A. Sakharov,158M. Anderson,159M. Bachtis,159J. N. Bellinger,159D. Carlsmith,159S. Dasu,159J. Efron,159 K. Flood,159L. Gray,159K. S. Grogg,159M. Grothe,159R. Hall-Wilton,159M. Herndon,159P. Klabbers,159 J. Klukas,159A. Lanaro,159C. Lazaridis,159J. Leonard,159R. Loveless,159A. Mohapatra,159F. Palmonari,159
D. Reeder,159I. Ross,159A. Savin,159W. H. Smith,159J. Swanson,159and M. Weinberg159
(CMS Collaboration)
1Yerevan Physics Institute, Yerevan, Armenia 2Institut 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
7
Ghent 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 11Universidade 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 23
Academy 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
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
30Laboratoire 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
34
Institute 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 45Institute of Nuclear Research ATOMKI, Debrecen, Hungary
46University of Debrecen, Debrecen, Hungary 47Panjab University, Chandigarh, India
48University of Delhi, Delhi, India 49Bhabha Atomic Research Centre, Mumbai, India 50
Tata Institute of Fundamental Research - EHEP, Mumbai, India 51Tata Institute of Fundamental Research - HECR, Mumbai, India 52Institute for Research and Fundamental Sciences (IPM), Tehran, Iran
53aINFN Sezione di Bari, Bari, Italy 53bUniversita` di Bari, Bari, Italy 53cPolitecnico di Bari, Bari, Italy 54aINFN Sezione di Bologna, Bologna, Italy
54bUniversita` di Bologna, Bologna, Italy 55aINFN Sezione di Catania, Catania, Italy
55bUniversita` di Catania, Catania, Italy 56aINFN Sezione di Firenze, Firenze, Italy
56bUniversita` di Firenze, Firenze, Italy
57INFN Laboratori Nazionali di Frascati, Frascati, Italy 58INFN Sezione di Genova, Genova, Italy 59aINFN Sezione di Milano-Biccoca, Milano, Italy
59bUniversita` di Milano-Bicocca, Milano, Italy 60aINFN Sezione di Napoli, Napoli, Italy 60bUniversita` di Napoli ‘‘Federico II,’’ Napoli, Italy
61aINFN Sezione di Padova, Padova, Italy 61bUniversita` di Padova, Padova, Italy 61cUniversita` di Trento (Trento), Padova, Italy
62aINFN Sezione di Pavia, Pavia, Italy 62bUniversita` di Pavia, Pavia, Italy 63a
INFN Sezione di Perugia, Perugia, Italy 63bUniversita` di Perugia, Perugia, Italy
64aINFN Sezione di Pisa, Pisa, Italy 64bUniversita` di Pisa, Pisa, Italy 64cScuola Normale Superiore di Pisa, Pisa, Italy
65aINFN Sezione di Roma, Roma, Italy 65bUniversita` di Roma ‘‘La Sapienza,’’ Roma, Italy
66aINFN Sezione di Torino, Torino, Italy 66bUniversita` di Torino, Torino, Italy 66c
Universita` del Piemonte Orientale (Novara), Torino, Italy 67aINFN Sezione di Trieste, Trieste, Italy
67bUniversita` di Trieste, Trieste, Italy 68Kangwon National University, Chunchon, Korea
70Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea 71Korea University, Seoul, Korea
72University of Seoul, Seoul, Korea 73Sungkyunkwan University, Suwon, Korea
74Vilnius University, Vilnius, Lithuania
75Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico 76Universidad Iberoamericana, Mexico City, Mexico
77Benemerita Universidad Autonoma de Puebla, Puebla, Mexico 78
Universidad Auto´noma de San Luis Potosı´, San Luis Potosı´, Mexico 79University of Auckland, Auckland, New Zealand
80University of Canterbury, Christchurch, New Zealand
81National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan 82Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
83Soltan Institute for Nuclear Studies, Warsaw, Poland
84Laborato´rio de Instrumentac¸a˜o e Fı´sica Experimental de Partı´culas, Lisboa, Portugal 85Joint Institute for Nuclear Research, Dubna, Russia
86Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia 87Institute for Nuclear Research, Moscow, Russia
88Institute for Theoretical and Experimental Physics, Moscow, Russia 89Moscow State University, Moscow, Russia
90P. N. Lebedev Physical Institute, Moscow, Russia
91State Research Center of Russian Federation, Institute for High Energy Physics, Protvino, Russia 92University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia
93Centro de Investigaciones Energe´ticas Medioambientales y Tecnolo´gicas (CIEMAT), Madrid, Spain 94
Universidad Auto´noma de Madrid, Madrid, Spain 95Universidad de Oviedo, Oviedo, Spain
96Instituto de Fı´sica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain 97CERN, European Organization for Nuclear Research, Geneva, Switzerland
98Paul Scherrer Institut, Villigen, Switzerland
99Institute for Particle Physics, ETH Zurich, Zurich, Switzerland 100Universita¨t Zu¨rich, Zurich, Switzerland
101National Central University, Chung-Li, Taiwan 102National Taiwan University (NTU), Taipei, Taiwan
103Cukurova University, Adana, Turkey
104Middle East Technical University, Physics Department, Ankara, Turkey 105Bogazici University, Istanbul, Turkey
106National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine 107University of Bristol, Bristol, United Kingdom
108Rutherford Appleton Laboratory, Didcot, United Kingdom 109Imperial College, London, United Kingdom 110Brunel University, Uxbridge, United Kingdom
111Baylor University, Waco, Texas 76706, USA 112Boston University, Boston, Massachusetts 02215, USA 113Brown University, Providence, Rhode Island 02912, USA 114University of California, Davis, Davis, California 95616, USA 115University of California, Los Angeles, Los Angeles, California 90095, USA
116University of California, Riverside, Riverside, California 92521, USA 117
University of California, San Diego, La Jolla, California 92093, USA 118University of California, Santa Barbara, Santa Barbara, California 93106, USA
119California Institute of Technology, Pasadena, California 91125, USA 120Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA 121University of Colorado at Boulder, Boulder, Colorado 80309, USA
122Cornell University, Ithaca, New York 14853, USA 123Fairfield University, Fairfield, Connecticut 06824, USA 124Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
125University of Florida, Gainesville, Florida 32611, USA 126
Florida International University, Miami, Florida 33199, USA 127Florida State University, Tallahassee, Florida 32306, USA 128Florida Institute of Technology, Melbourne, Florida 32901, USA 129University of Illinois at Chicago (UIC), Chicago, Illinois 60607, USA
131Johns Hopkins University, Baltimore, Maryland 21218, USA 132The University of Kansas, Lawrence, Kansas 66045, USA 133Kansas State University, Manhattan, Kansas 66506, USA
134Lawrence Livermore National Laboratory, Livermore, California 94720, USA 135University of Maryland, College Park, Maryland 20742, USA 136Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
137University of Minnesota, Minneapolis, Minnesota 55455, USA 138University of Mississippi, University, Mississippi 38677, USA 139
University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA 140State University of New York at Buffalo, Buffalo, New York 14260, USA
141Northeastern University, Boston, Massachusetts 02115, USA 142Northwestern University, Evanston, Illinois 60208, USA 143University of Notre Dame, Notre Dame, Indiana 46556, USA
144The Ohio State University, Columbus, Ohio 43210, USA 145Princeton University, Princeton, New Jersey 08544, USA 146University of Puerto Rico, Mayaguez, Puerto Rico 00680, USA
147Purdue University, West Lafayette, Indiana 47907, USA 148Purdue University Calumet, Hammond, Indiana 46323, USA
149Rice University, Houston, Texas 77251, USA 150University of Rochester, Rochester, New York 14627, USA 151The Rockefeller University, New York, New York 10021, USA
152Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA 153University of Tennessee, Knoxville, Tennessee 37996, USA
154Texas A&M University, College Station, Texas 77843, USA 155
Texas Tech University, Lubbock, Texas 79409, USA 156Vanderbilt University, Nashville, Tennessee 37235, USA 157University of Virginia, Charlottesville, Virginia 22901, USA
158Wayne State University, Detroit, Michigan 48202, USA 159University of Wisconsin, Madison, Wisconsin 53706, USA
aDeceased.
bAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland. cAlso at Universidade Federal do ABC, Santo Andre, Brazil.
dAlso at Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France. eAlso at Suez Canal University, Suez, Egypt.
fAlso at British University, Cairo, Egypt. gAlso at Fayoum University, El-Fayoum, Egypt.
hAlso at Soltan Institute for Nuclear Studies, Warsaw, Poland. i
Also at Massachusetts Institute of Technology, Cambridge, MA, USA.
jAlso at Universite´ de Haute-Alsace, Mulhouse, France.
kAlso at Brandenburg University of Technology, Cottbus, Germany. lAlso at Moscow State University, Moscow, Russia.
mAlso at Institute of Nuclear Research ATOMKI, Debrecen, Hungary. nAlso at Eo¨tvo¨s Lora´nd University, Budapest, Hungary.
oAlso at Tata Institute of Fundamental Research - HECR, Mumbai, India. pAlso at University of Visva-Bharati, Santiniketan, India.
qAlso at Sharif University of Technology, Tehran, Iran. rAlso at Shiraz University, Shiraz, Iran.
sAlso at Isfahan University of Technology, Isfahan, Iran.
tAlso at Facolta` Ingegneria Universita` di Roma ‘‘La Sapienza,’’ Roma, Italy. uAlso at Universita` della Basilicata, Potenza, Italy.
vAlso at Universita` degli studi di Siena, Siena, Italy.
wAlso at California Institute of Technology, Pasadena, CA, USA. x
Also at Faculty of Physics of University of Belgrade, Belgrade, Serbia.
y
Also at University of California, Los Angeles, Los Angeles, CA, USA.
zAlso at University of Florida, Gainesville, FL, USA. aaAlso at Universite´ de Gene`ve, Geneva, Switzerland. bbAlso at Scuola Normale e Sezione dell’ INFN, Pisa, Italy.
ccAlso at University of Athens, Athens, Greece.
ddAlso at The University of Kansas, Lawrence, KS, USA.
eeAlso at Institute for Theoretical and Experimental Physics, Moscow, Russia. ffAlso at Paul Scherrer Institut, Villigen, Switzerland.
ggAlso at University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia. hhAlso at Gaziosmanpasa University, Tokat, Turkey.
iiAlso at Adiyaman University, Adiyaman, Turkey. jjAlso at Mersin University, Mersin, Turkey.
kkAlso at Izmir Institute of Technology, Izmir, Turkey. llAlso at Kafkas University, Kars, Turkey.
mmAlso at Suleyman Demirel University, Isparta, Turkey. nnAlso at Ege University, Izmir, Turkey.
ooAlso at Rutherford Appleton Laboratory, Didcot, United Kingdom.
ppAlso at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom. qq
Also at INFN Sezione di Perugia, Universita` di Perugia, Perugia, Italy.
rrAlso at Utah Valley University, Orem, UT, USA. ssAlso at Institute for Nuclear Research, Moscow, Russia.
