Measurement of the W
þW
Cross Section in
p
ffiffiffi
s
¼ 7 TeV pp Collisions with ATLAS
G. Aad et al.* (ATLAS Collaboration)
(Received 27 April 2011; published 20 July 2011)
This Letter presents a measurement of the WþW production cross section in pffiffiffis¼ 7 TeV pp collisions by the ATLAS experiment, using 34 pb1 of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1:7 0:6 events. The measured cross section is 41þ2016ðstatÞ 5ðsystÞ 1ðlumiÞ pb, which is consistent with the standard model prediction of 44 3 pb calculated at next-to-leading order in QCD.
DOI:10.1103/PhysRevLett.107.041802 PACS numbers: 14.70.Fm, 12.15.Ji, 13.38.Be, 13.85.Qk
TheWþW process plays an important role in electro-weak physics. The production rate and kinematic distribu-tions ofWþWare sensitive to the triple gauge couplings of theW boson [1,2] andWþW production is an impor-tant background to standard model Higgs boson searches. For these reasons, the measurement of theWþW produc-tion cross secproduc-tion in 7 TeVpp collisions is a milestone in the Large Hadron Collider (LHC) physics program. WþWproduction has been previously measured in both eþe collisions [1] and p p collisions [2], and was also recently measured in pp collisions [3]. In the standard model, the largest production mechanisms ofWþW pro-ceed via s-channel and t-channel quark annihilation [4], followed by the gluon fusion process [5], which is next-to-next-to-leading order but is enhanced by the large gluon-gluon parton luminosity at the LHC.
CandidateWþW events are reconstructed in the lep-tonic‘‘ decay channel where each ‘ is either an elec-tron or a muon; included in this selection is WþW production in which either or both W bosons decay to ! ‘. This channel provides a significantly better signal to background ratio than the semileptonic or had-ronic channels. Events consistent with pp ! WþWþ X ! ‘‘ þ X are selected by requiring two recon-structed oppositely-charged leptons and a large transverse momentum imbalance due to the neutrinos, which escape detection. There are four main backgrounds, all of compa-rable size: (i)W þ jets production with a jet misidentified as a lepton; (ii) Drell-Yan production, which includes Z=! ‘‘ where the observed momentum imbalance is due to mismeasurements and Z= ! ! ‘‘ þ 4; (iii) top production (tt and Wt), which also produces two W bosons, but is not considered signal and is suppressed by
vetoing candidates with jets; (iv) other diboson processes, which includeWZ production decaying to ‘‘‘ where one charged lepton is lost,ZZ with one Z decaying to charged leptons and oneZ decaying to neutrinos, and W with the photon misidentified as an electron.
The ATLAS detector [6] has a cylindrical geometry [7] and consists of an inner tracking detector surrounded by a 2 T superconducting solenoid, electromagnetic and had-ronic calorimeters, and a muon spectrometer with a toroidal magnetic field. The inner detector provides precision track-ing for charged particles forjj < 2:5. It consists of silicon pixel and strip detectors surrounded by a straw tube tracker that also provides transition radiation measurements for electron identification. The calorimeter system covers the pseudorapidity rangejj < 4:9. For jj < 2:5, the electro-magnetic calorimeter is finely segmented and plays an important role in electron identification. The muon spec-trometer has separate trigger and high-precision tracking chambers coveringjj < 2:7. The transverse energy ET is defined to beE sin, where E is the energy associated with a calorimeter cell or energy cluster. Similarly, pT is the momentum component transverse to the beam line.
A three-level trigger system selects events to record for offline analysis. During the data-taking period, the selec-tions for at least one electron or muon were made pro-gressively stricter, culminating in anET> 15 GeV single electron or pT> 13 GeV single muon requirement. The results presented here use a data sample corresponding to 34 pb1collected during 2010, where the subsystems de-scribed were operational.
The signal acceptance is determined from a detailed Monte Carlo simulation. Theq q ! WþWsignal is simu-lated up to next-to-leading order in QCD withMC@NLO[8] and the gluon fusion process is simulated withGG2WW[9]; the CTEQ6.6 [10] and CTEQ6M [11] parton distribution functions (PDFs), respectively, are used. HERWIG [12] is used to model W leptonic decays, parton showers, and hadronization, and JIMMY [13] is used to simulate the underlying event. The detector response simulation [14] is based on the GEANT4program [15]. For the table and
*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.
figures in this Letter, the standard model expectation for theWþWsignal is normalized to 44 3 pb, which is the sum of the quark annihilation (97%) and gluon fusion (3%) processes, as calculated byMC@NLOandGG2WW.
The luminosity in a single bunch-crossing was sufficient to produce multiple collisions, observed as multiple verti-ces, in the same recorded event. The vertex with the largest sump2T of the associated tracks is selected as the primary vertex; this selects vertices with a few highpT tracks over those with many lowerpT tracks. Additional inclusivepp collisions are also simulated to reproduce the vertex multi-plicity observed in data.
Electrons are reconstructed from a combination of a track found in the inner detector and an electromagnetic calorimeter energy cluster withjj < 1:37 or 1:52 < jj < 2:47 to avoid the transition region between the barrel and the end-cap electromagnetic calorimeters. Candidate elec-trons must satisfy the ‘‘tight’’ selection [16], which re-quires the following measured quantities to be consistent with those from a promptly produced electron: shower shape, ratio of energy deposited in the hadronic to electromagnetic calorimeters, inner-detector track quality, track-to-shower matching, ratio of calorimeter energy measurement to track momentum, and transition radiation in the straw tube tracker. The electron is required to be isolated such that the sum ofETfor calorimeter energy in a cone of size R pffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi2þ 2 of 0.3 around the elec-tron is less than 6 GeV, excluding energy associated with the electron cluster. The overall electron reconstruction and identification efficiency is measured from data using W ! e and Z ! ee candidates. It varies from 78% for the central region (jj < 0:8) to 64% in the forward region (2:0 < jj < 2:47) with a statistical uncertainty of less than 0.4% and a systematic uncertainty of 5% [16] aver-aged over rapidity. The systematic uncertainty is due to background uncertainties in theW and Z samples and the consistency of efficiencies derived from the two samples.
Muon candidates are formed by associating muon spec-trometer (MS) tracks with inner detector (ID) tracks after accounting for energy loss in the calorimeter. A common transverse momentum is determined using a statistical combination of the two tracks and is required to havejj < 2:4. To reject muons from charged or K decays and charged particles from the beam-induced backgrounds, the MS muonpT must exceed 10 GeV and be consistent with the ID measurement,jpIDT pMST j=pIDT < 0:5. To suppress muons originating from hadronic jets, the sum of thepT of other tracks with pT> 1 GeV in a cone of R ¼ 0:2 around the muon candidate divided by the muon pT is required to be less than 0.1. The muon reconstruction and isolation efficiencies are measured in data usingZ ! candidates to obtain a combined efficiency of 92 1ðstatÞ 1ðsystÞ%, where the systematic uncertainty is dominated by variations between data-taking periods due to additional collisions in the events [16].
Jets used to discriminate top from WþW production are reconstructed from calorimeter clusters using the anti-kT algorithm [17] with a resolution parameter of R ¼ 0:4. Jets within a R < 0:3 of an electron are not used because the electrons are in general also reconstructed as jets. The jet energies are calibrated using ET- and -dependent correction factors [18] based on simulation and validated by test beam and collision data.
In order to suppress the Drell-Yan background, a mo-mentum imbalance of the visible collision products in the plane transverse to the beam axis is required. For this purpose, missing transverse energy is defined as ~EmissT ¼ P ~ET, where ~ET indicate the 2-dimensional transverse vectors for the reconstructed clusters of energy in the calorimeter in the range jj < 4:5 and muon momenta. Since the ~EmissT variable is sensitive to the mismeasurement of an individual lepton or jet, the relative missing trans-verse energy is defined as
Emiss T;rel¼ Emiss T sinðÞ if < =2 Emiss T if =2;
where is the difference in the azimuthal angle between ~EmissT and the nearest lepton or jet. This definition allows events to be removed when ~EmissT points along a lepton direction, which occurs when the lepton momentum is measured lower than the true value or, for events with the two leptons moving in approximately opposite directions, higher than the true value. This generally reduces the contribution from mismeasured leptons giving a higher signal to background ratio than a direct requirement on j ~Emiss
T j. Two important cases are high-mass muonic Drell-Yan events, where the momentum resolution can be com-parable toj ~EmissT j in WþWevents, andZ ! , where the real ~EmissT from leptonic decays is parallel to the momenta of the leptons.
Candidates are selected with two opposite-sign charged leptons withpT> 20 GeV. The leptons are required to be consistent with coming from a primary vertex with at least three associated tracks, which makes the cosmic ray back-ground negligible. For the ee and final states, the resulting sample is dominantly Z ! ee and Z ! events, while e candidates are a mix of Z ! , tt, and other backgrounds. In order to suppress Z= ! ee and Z= ! , ee and events with an invariant mass near theZ mass, jm‘‘ mZj < 10 GeV, or m‘‘< 15 GeV are removed and the remainder are required to have Emiss
T;rel> 40 GeV. For e events, a less stringent require-mentEmiss
T;rel> 20 GeV is made. In order to suppress the tt contribution, candidates containing jets withpT> 20 GeV andjj < 3 are removed. Figure1shows theEmiss
T;rel distri-butions separately for same-flavor (ee and ) and e events with all selections applied except for the Emiss T;rel requirement; also shown is the number of jets with pT> 20 GeV after final selection except for the jet-veto
requirement. In all three distributions, the data in the background regions are in agreement with the standard model expectation and the signal is clearly visible.
The acceptance, which converts the observed yield in the kinematically restricted signal region to the inclusive WþW cross section, is derived from simulation and is corrected with scale factors based on measurements in independent data samples. The scale factors correct for the difference in trigger, lepton reconstruction and identi-fication, and jet-veto efficiencies between data and simu-lation. The efficiency to pass the trigger criteria is close to unity and has small statistical and systematic uncertainties. For the lepton reconstruction and identification, the scale factors differ from unity by at most a few percent, indicat-ing the accuracy of the simulation, and have systematic uncertainties derived from the efficiency measurements described above. A small smearing is added to the muon pTin simulation, so that it replicates theZ ! invariant mass distribution in data. The acceptance uncertainty due to the PDF uncertainties is 1.2%.
There are two major sources of systematic uncertainty in the jet-veto efficiency. The first is the modeling of jet production in association withWþW due to initial state radiation, radiation from the internal line in thet-channel diagram, and additional parton collisions in the samepp collision. The second is the jet-energy scale, which is the correspondence between the true particle jet pT and the reconstructed jet pT. To minimize the systematic uncer-tainty due to these two effects, control samples ofZ ! ‘‘ are used. These are sufficiently large and pure that the jet-veto efficiency can be directly measured and compared to simulation using the same QCD modeling as theWþW signal. The ratio of the observed to the simulated zero-jet fraction in the Z ! ‘‘ sample to simulation is used to define a jet-veto scale factor of 0:97 0:06. The uncer-tainty is due to differences between the jet-veto efficiency inZ and WþWevents which is assessed including effects from the choice of renormalization and fragmentation scales [19].
The overall selection acceptances for signal events are 4:1 0:1% for ee, 8:6 0:1% for , and 11:5 0:6% for e. The relative acceptance in event selection are lepton acceptance and identification (18%, 41%, 27%) and the mll (85%, 84%, 100%),Emiss
T;rel (41%, 43%, 69%), and jet-veto (64%, 59%, 61%) requirements, where the three percentages indicate the ee, , and e channels, respectively, and each factor is relative to the previous requirement. The contributions from WþW production where one or both W bosons decays to a which subse-quently decays to ane or are less than 10% of the final selectedWþW signal events in all three channels.
With the exception of W þ jets, the backgrounds are derived from simulations, corrected with the same scale factors as applied to the modeling of the signal acceptance. The backgrounds are scaled to the data sample based on the integrated luminosity and predicted cross sections. The top and WZ processes are simulated with MC@NLO, the ZZ process is simulated with HERWIG, the W is simulated withmadgraphþpythia[20,21], and the Drell-Yan process is simulated withALPGEN[22] andPYTHIA[20]. The QCD jet contribution, which is not significant after theEmissT;relcut, is modeled withPYTHIAin Fig.1, which includes data below theEmiss
T;relrequirement.
Like the signal acceptance, the background estimates have uncertainties due to the trigger, lepton reconstruction and identification, and jet-veto efficiencies, in addition to the uncertainties on the integrated luminosity and theoreti-cal cross sections. The Drell-Yan and top background estimates have additional uncertainties described below. Most of the Drell-Yan events are removed by the dilepton invariant mass andEmiss
T;rel requirements, but because of the large cross section some remain as background. The un-certainty on this background due to the simulation ofEmissT;rel is assessed using a control sample of Z= ! ee and Z= ! events in the Z mass peak region, jm
‘‘ mZj < 10 GeV, passing a relaxed requirement of EmissT;rel> 30 GeV. Despite theEmissT;rel requirement, this sample is still
0 20 40 60 80 100 120 140 -1 10 1 10 2 10 3 10 ATLAS ∫Ldt = 34 pb-1 =7TeV s Data Drell-Yan QCD jet Diboson W+jets top ν e ν e → WW ν µ ν µ + 0 20 40 60 80 100 120 140 Events / 10 GeV 1 10 -1 Ldt = 34 pb ∫ ATLAS =7TeV s Data Drell-Yan QCD jet Diboson W+jets top ν µ ν e → WW 0 1 2 3 4 5 6 7 8 9 10 Events 0 5 10 15 20 25 30 35 -1 Ldt = 34 pb ∫ ATLAS =7TeV s Data Drell-Yan QCD jet Diboson W+jets top ν l ν l → WW Events / 10 GeV [GeV] miss T, rel E miss [GeV] T, rel E Jet Multiplicity
FIG. 1 (color online). Emiss
T;reldistributions for the selectedee and (left) and e (center) events and the multiplicity distribution for
jets withpT> 20 GeV and jj < 3:0 for all three dilepton channels combined (right). The distributions show events with all selection
criteria applied except forEmiss
T;relin theEmissT;reldistribution and the jet-veto in the jet multiplicity distribution. Simulation is used for the
QCD jet andW þ jets background contributions in these plots as opposed to the data-driven method used for W þ jets in the signal region described in the text. The QCD jet contribution is negligible in the signal region.
dominated byZ ! ‘‘ events in which the observed mo-mentum imbalance is due to a combination of detector resolution, limited detector coverage, and neutrinos from heavy flavor decays. A 64% systematic uncertainty is assigned based on the difference between the observed yield in data and the Monte Carlo prediction, which are statistically consistent.
The top background arises from tt and Wt production where the two W bosons decay leptonically. Simulation based onMC@NLOis used to estimate the number of events passing the jet-veto requirement. Similar to the signal acceptance, there are two important systematic uncertain-ties on the jet-veto efficiency: the jet-energy scale and the amount of initial and final state radiation (ISR/FSR). The jet-energy calibration uncertainty [18] corresponds to a 40% change in the top background. The uncertainty due to the ISR/FSR modeling is estimated using theACERMC [23] generator interfaced toPYTHIA[20], and varying the parameters controlling ISR and FSR in a range consistent with experimental data [24]. The resulting uncertainty of 32% is a combination of the shift in the prediction and the statistical uncertainty on the simulation.
W bosons produced in association with a jet that is misidentified as a lepton contribute to the selected sample. The rate at which hadronic jets are misidentified as leptons may not be accurately described in the simulation, because these events are due to rare fragmentation processes or interactions with the detector. This background is therefore determined from data using control samples dominated by W þ jets events and subtracting all other components us-ing simulation. The ALPGENþHERWIGþJIMMY simula-tion of the W þ jets background used in Fig. 1 gives comparable results to this method. The W þ jets data samples are constructed by requiring one electron or muon passing the full selection criteria and a leptonlike jet, which is a reconstructed electron or muon that is selected as likely to be due to a jet. For electrons, the leptonlike jets are electromagnetic clusters matched to tracks in the inner detector that fail the full electron selec-tion. For muons, leptonlike jets are muon candidates that fail at least one of the requirements on isolation, distance from the primary vertex, or ID and MS consistency. These
events are otherwise required to pass the full event selec-tion, treating the leptonlike jet as if it were a fully identified lepton.
The W þ jets background is then estimated by scaling this control sample by a measuredpT-dependent factorf. The factorf is the ratio of the probability for a jet to satisfy the full lepton identification criteria to the probability to satisfy the leptonlike jet criteria. The factorf is measured in a QCD jet data sample and corrected for the small contribution of true leptons to the sample using simulation. The systematic uncertainty onf is 36% for both electrons and muons, and is determined from variations of f in different run periods and in data samples containing jets of different energies, which covers differences in the quark-gluon composition between the jets in the QCD jet andW þ jets data samples.
The resulting signal and background expectations are shown in TableI. Eight events are observed in the data with a total expected background of 1:7 0:6 events. As shown in Fig. 2, the kinematic properties of the observed events are qualitatively consistent with the standard model expec-tation. To estimate the statistical significance of the signal, Poisson-distributed pseudoexperiments are generated, varying the expected background according to its uncer-tainty. The probability to observe 8 or more events in the absence of a signal is 1:2 103, which corresponds to a significance of 3.0 standard deviations. The WþW pro-duction cross section is determined using a maximum likelihood fitting method to combine the three dilepton channels. A cross section of WþW¼ 41þ2016ðstatÞ
5ðsystÞ 1ðlumiÞ pb is measured. The luminosity uncer-tainty for this measurement is 3.4% [25]. The total system-atic uncertainty (11.5%) includes the signal acceptance and efficiency (A=A ¼ 7:4%) and background estimation (Nb=Nb ¼ 33%) uncertainties. The dominant system-atics uncertainties are due to the jet-veto (7.5%), and the lepton selection and identification (4.3%).
The measured WþW production cross section is in good agreement with the standard model prediction of 44 3 pb calculated at next-to-leading order in QCD and the recent measurement by CMS [3]. With the signifi-cantly larger integrated luminosities expected to be
TABLE I. Summary of observed events and expected standard model signal and background contributions in the three dilepton channels and their combination. The first uncertainty is statistical, the second systematic.
Final State eþeEmissT;rel þEmissT;rel eEmissT;rel Combined
Observed Events 1 2 5 8 ExpectedWþW 0:79 0:02 0:09 1:61 0:04 0:14 4:45 0:06 0:44 6:85 0:07 0:66 Backgrounds Drell-Yan 0:00 0:10 0:07 0:01 0:10 0:07 0:22 0:06 0:15 0:23 0:15 0:17 WZ, ZZ, W 0:05 0:01 0:01 0:10 0:01 0:01 0:23 0:05 0:02 0:38 0:04 0:04 W þ jets 0:08 0:05 0:03 0:00 0:29 0:10 0:46 0:12 0:17 0:54 0:32 0:21 Top 0:04 0:02 0:02 0:14 0:06 0:07 0:35 0:10 0:19 0:53 0:12 0:28 Total Background 0:17 0:11 0:08 0:25 0:31 0:15 1:26 0:17 0:31 1:68 0:37 0:42 PRL107, 041802 (2011) P H Y S I C A L R E V I E W L E T T E R S 22 JULY 2011
provided by the LHC, this signal will form the basis of a research program that will include searches for the stan-dard model Higgs boson, anomalous triple gauge cou-plings, and other processes beyond the standard model.
We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently.
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.
The crucial computing support from all WLCG partners is acknowledged gratefully, in particular, from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1
(Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwide.
[1] R. Barate et al. (ALEPH Collaboration),Phys. Lett. B484, 205 (2000); P. Abreu et al. (DELPHI Collaboration),Phys.
Lett. B 479, 89 (2000); M. Acciarri et al. (L3
Collaboration),Phys. Lett. B496, 19 (2000); G. Abbiendi et al. (OPAL Collaboration),Phys. Lett. B493, 249 (2000). [2] T. Aaltonen et al. (CDF Collaboration),Phys. Rev. Lett.
104, 201801 (2010); V. M. Abazovet al. (D0
Collaboration),Phys. Rev. Lett.103, 191801 (2009). [3] S. Chatrchyan et al. (CMS Collaboration),
arXiv:1102.5429.
[4] R. W. Brown and K. O. Mikaelian,Phys. Rev. D19, 922 (1979).
[5] E. W. N. Glover and J. J. van der Bij,Phys. Lett. B219, 488 (1989).
[6] ATLAS Collaboration,JINST3, S08003 (2008). [7] ATLAS uses a right-handed coordinate system with its
origin at the nominal interaction point (IP) in the center of the detector and thez-axis along the beam pipe. The x-axis points from the IP to the center of the LHC ring, and they axis points upward. Cylindrical coordinates (r, ) are used in the transverse plane, being the azimuthal angle around the beam pipe. The pseudorapidity is defined in terms of the polar angle as ¼ lntanð=2Þ.
[8] S. Frixione and B. R. Webber,J. High Energy Phys. 06 (2002) 029.
[9] T. Binoth, M. Ciccolini, N. Kauer, and M. Kra¨mer,J. High Energy Phys. 12 (2006) 046.
[10] P. M. Nadolsky et al.,Phys. Rev. D78, 013004 (2008). [11] J. Pumplin et al.,J. High Energy Phys. 07 (2002) 012. [12] G. Corcella et al.,J. High Energy Phys. 01 (2001) 010. [13] J. M. Butterworth et al.,Z. Phys. C72, 637 (1996). [14] ATLAS Collaboration,Eur. Phys. J. C70, 823 (2010). [15] S. Agostinelli et al.,Nucl. Instrum. Methods Phys. Res.,
Sect. A506, 250 (2003).
[16] ATLAS Collaboration, J. High Energy Phys. 12 (2010) 060.
[17] M. Cacciari, G. P. Salam, and G. Soyez,J. High Energy Phys. 04 (2008) 063; M. Cacciari and G. P. Salam,Phys. Lett. B641, 57 (2006).
[18] ATLAS Collaboration,Eur. Phys. J. C71, 1512 (2011). [19] J. M. Campbell et al.,Phys. Rev. D80, 054023 (2009). [20] T. Sjostrand, S. Mrenna, and P. Skands,J. High Energy
Phys. 05 (2006) 026.
[21] J. Alwall et al.,J. High Energy Phys. 09 (2007) 028. [22] M. L. Mangano et al.,J. High Energy Phys. 07 (2003) 001. [23] B. P. Kersevan and E. Richter-Wa¸s,arXiv:hep-ph/0405247. [24] P. Z. Skands,Phys. Rev. D82, 074018 (2010).
[25] ATLAS Collaboration, Report No. ATLAS-CONF-2011-011,http://cdsweb.cern.ch/record/1334563.
G. Aad,48B. Abbott,111J. Abdallah,11A. A. Abdelalim,49A. Abdesselam,118O. Abdinov,10B. Abi,112M. Abolins,88 H. Abramowicz,153H. Abreu,115E. Acerbi,89a,89bB. S. Acharya,164a,164bD. L. Adams,24T. N. Addy,56 J. Adelman,175M. Aderholz,99S. Adomeit,98P. Adragna,75T. Adye,129S. Aefsky,22J. A. Aguilar-Saavedra,124b,b (leading lepton) [GeV]
T p 50 100 Events / 10 GeV 0 2 4 Data WW Bkg ∫Ldt = 34pb-1 ATLAS s=7TeV ) [GeV] -l + (l T p 0 50 100 Events / 20 GeV 0 5 10 Data WW Bkg ∫Ldt = 34pb-1 ATLAS s=7TeV ) -l + (l φ ∆ 0 1 2 3 Events / 0.4 0 2 4 6 Data WW Bkg ∫Ldt = 34pb-1 ATLAS s=7TeV
FIG. 2 (color online). Distributions of the leading lepton pT (left), transverse momentum of the dilepton system (center), and azimuthal angle between the leptons (right) for the sum of the selectedee, and e samples compared to the expecta-tion. The gray band indicates the combined statistical and systematic uncertainty on the sum of the signal and background expectations.
M. Aharrouche,81S. P. Ahlen,21F. Ahles,48A. Ahmad,148M. Ahsan,40G. Aielli,133a,133bT. Akdogan,18a T. P. A. A˚ kesson,79G. Akimoto,155A. V. Akimov,94A. Akiyama,67M. S. Alam,1M. A. Alam,76S. Albrand,55 M. Aleksa,29I. N. Aleksandrov,65F. Alessandria,89aC. Alexa,25aG. Alexander,153G. Alexandre,49T. Alexopoulos,9
M. Alhroob,20M. Aliev,15G. Alimonti,89aJ. Alison,120M. Aliyev,10P. P. Allport,73S. E. Allwood-Spiers,53 J. Almond,82A. Aloisio,102a,102bR. Alon,171A. Alonso,79M. G. Alviggi,102a,102bK. Amako,66P. Amaral,29 C. Amelung,22V. V. Ammosov,128A. Amorim,124a,cG. Amoro´s,167N. Amram,153C. Anastopoulos,139T. Andeen,34
C. F. Anders,20K. J. Anderson,30A. Andreazza,89a,89bV. Andrei,58aM-L. Andrieux,55X. S. Anduaga,70 A. Angerami,34F. Anghinolfi,29N. Anjos,124aA. Annovi,47A. Antonaki,8M. Antonelli,47S. Antonelli,19a,19b A. Antonov,96J. Antos,144bF. Anulli,132aS. Aoun,83L. Aperio Bella,4R. Apolle,118G. Arabidze,88I. Aracena,143
Y. Arai,66A. T. H. Arce,44J. P. Archambault,28S. Arfaoui,29,dJ-F. Arguin,14E. Arik,18a,aM. Arik,18a A. J. Armbruster,87O. Arnaez,81C. Arnault,115A. Artamonov,95G. Artoni,132a,132bD. Arutinov,20S. Asai,155 R. Asfandiyarov,172S. Ask,27B. A˚ sman,146a,146bL. Asquith,5K. Assamagan,24A. Astbury,169A. Astvatsatourov,52
G. Atoian,175B. Aubert,4B. Auerbach,175E. Auge,115K. Augsten,127M. Aurousseau,145aN. Austin,73 R. Avramidou,9D. Axen,168C. Ay,54G. Azuelos,93,eY. Azuma,155M. A. Baak,29G. Baccaglioni,89a C. Bacci,134a,134bA. M. Bach,14H. Bachacou,136K. Bachas,29G. Bachy,29M. Backes,49M. Backhaus,20
E. Badescu,25aP. Bagnaia,132a,132bS. Bahinipati,2Y. Bai,32aD. C. Bailey,158T. Bain,158J. T. Baines,129 O. K. Baker,175M. D. Baker,24S. Baker,77F. Baltasar Dos Santos Pedrosa,29E. Banas,38P. Banerjee,93 Sw. Banerjee,169D. Banfi,29A. Bangert,137V. Bansal,169H. S. Bansil,17L. Barak,171S. P. Baranov,94A. Barashkou,65 A. Barbaro Galtieri,14T. Barber,27E. L. Barberio,86D. Barberis,50a,50bM. Barbero,20D. Y. Bardin,65T. Barillari,99 M. Barisonzi,174T. Barklow,143N. Barlow,27B. M. Barnett,129R. M. Barnett,14A. Baroncelli,134aA. J. Barr,118
F. Barreiro,80J. Barreiro Guimara˜es da Costa,57P. Barrillon,115R. Bartoldus,143A. E. Barton,71D. Bartsch,20 V. Bartsch,149R. L. Bates,53L. Batkova,144aJ. R. Batley,27A. Battaglia,16M. Battistin,29G. Battistoni,89a F. Bauer,136H. S. Bawa,143,fB. Beare,158T. Beau,78P. H. Beauchemin,118R. Beccherle,50aP. Bechtle,41H. P. Beck,16 M. Beckingham,48K. H. Becks,174A. J. Beddall,18cA. Beddall,18cS. Bedikian,175V. A. Bednyakov,65C. P. Bee,83
M. Begel,24S. Behar Harpaz,152P. K. Behera,63M. Beimforde,99C. Belanger-Champagne,166P. J. Bell,49 W. H. Bell,49G. Bella,153L. Bellagamba,19aF. Bellina,29M. Bellomo,119aA. Belloni,57O. Beloborodova,107 K. Belotskiy,96O. Beltramello,29S. Ben Ami,152O. Benary,153D. Benchekroun,135aC. Benchouk,83M. Bendel,81
B. H. Benedict,163N. Benekos,165Y. Benhammou,153D. P. Benjamin,44M. Benoit,115J. R. Bensinger,22 K. Benslama,130S. Bentvelsen,105D. Berge,29E. Bergeaas Kuutmann,41N. Berger,4F. Berghaus,169E. Berglund,49 J. Beringer,14K. Bernardet,83P. Bernat,77R. Bernhard,48C. Bernius,24T. Berry,76A. Bertin,19a,19bF. Bertinelli,29 F. Bertolucci,122a,122bM. I. Besana,89a,89bN. Besson,136S. Bethke,99W. Bhimji,45R. M. Bianchi,29M. Bianco,72a,72b
O. Biebel,98S. P. Bieniek,77J. Biesiada,14M. Biglietti,134a,134bH. Bilokon,47M. Bindi,19a,19bS. Binet,115 A. Bingul,18cC. Bini,132a,132bC. Biscarat,177U. Bitenc,48K. M. Black,21R. E. Blair,5J.-B. Blanchard,115 G. Blanchot,29T. Blazek,144aC. Blocker,22J. Blocki,38A. Blondel,49W. Blum,81U. Blumenschein,54 G. J. Bobbink,105V. B. Bobrovnikov,107S. S. Bocchetta,79A. Bocci,44C. R. Boddy,118M. Boehler,41J. Boek,174
N. Boelaert,35S. Bo¨ser,77J. A. Bogaerts,29A. Bogdanchikov,107A. Bogouch,90,aC. Bohm,146aV. Boisvert,76 T. Bold,163,gV. Boldea,25aN. M. Bolnet,136M. Bona,75V. G. Bondarenko,96M. Boonekamp,136G. Boorman,76
C. N. Booth,139S. Bordoni,78C. Borer,16A. Borisov,128G. Borissov,71I. Borjanovic,12aS. Borroni,132a,132b K. Bos,105D. Boscherini,19aM. Bosman,11H. Boterenbrood,105D. Botterill,129J. Bouchami,93J. Boudreau,123
E. V. Bouhova-Thacker,71C. Boulahouache,123C. Bourdarios,115N. Bousson,83A. Boveia,30J. Boyd,29 I. R. Boyko,65N. I. Bozhko,128I. Bozovic-Jelisavcic,12bJ. Bracinik,17A. Braem,29P. Branchini,134a G. W. Brandenburg,57A. Brandt,7G. Brandt,15O. Brandt,54U. Bratzler,156B. Brau,84J. E. Brau,114H. M. Braun,174
B. Brelier,158J. Bremer,29R. Brenner,166S. Bressler,152D. Breton,115D. Britton,53F. M. Brochu,27I. Brock,20 R. Brock,88T. J. Brodbeck,71E. Brodet,153F. Broggi,89aC. Bromberg,88G. Brooijmans,34W. K. Brooks,31b G. Brown,82H. Brown,7E. Brubaker,30P. A. Bruckman de Renstrom,38D. Bruncko,144bR. Bruneliere,48S. Brunet,61 A. Bruni,19aG. Bruni,19aM. Bruschi,19aT. Buanes,13F. Bucci,49J. Buchanan,118N. J. Buchanan,2P. Buchholz,141 R. M. Buckingham,118A. G. Buckley,45S. I. Buda,25aI. A. Budagov,65B. Budick,108V. Bu¨scher,81L. Bugge,117 D. Buira-Clark,118O. Bulekov,96M. Bunse,42T. Buran,117H. Burckhart,29S. Burdin,73T. Burgess,13S. Burke,129
E. Busato,33P. Bussey,53C. P. Buszello,166F. Butin,29B. Butler,143J. M. Butler,21C. M. Buttar,53 J. M. Butterworth,77W. Buttinger,27T. Byatt,77S. Cabrera Urba´n,167D. Caforio,19a,19bO. Cakir,3aP. Calafiura,14
G. Calderini,78P. Calfayan,98R. Calkins,106L. P. Caloba,23aR. Caloi,132a,132bD. Calvet,33S. Calvet,33
R. Camacho Toro,33A. Camard,78P. Camarri,133a,133bM. Cambiaghi,119a,119bD. Cameron,117J. Cammin,20 S. Campana,29M. Campanelli,77V. Canale,102a,102bF. Canelli,30A. Canepa,159aJ. Cantero,80L. Capasso,102a,102b
M. D. M. Capeans Garrido,29I. Caprini,25aM. Caprini,25aD. Capriotti,99M. Capua,36a,36bR. Caputo,148 C. Caramarcu,25aR. Cardarelli,133aT. Carli,29G. Carlino,102aL. Carminati,89a,89bB. Caron,159aS. Caron,48
G. D. Carrillo Montoya,172A. A. Carter,75J. R. Carter,27J. Carvalho,124a,hD. Casadei,108M. P. Casado,11 M. Cascella,122a,122bC. Caso,50a,50b,aA. M. Castaneda Hernandez,172E. Castaneda-Miranda,172
V. Castillo Gimenez,167N. F. Castro,124aG. Cataldi,72aF. Cataneo,29A. Catinaccio,29J. R. Catmore,71A. Cattai,29 G. Cattani,133a,133bS. Caughron,88D. Cauz,164a,164cP. Cavalleri,78D. Cavalli,89aM. Cavalli-Sforza,11 V. Cavasinni,122a,122bA. Cazzato,72a,72bF. Ceradini,134a,134bA. S. Cerqueira,23aA. Cerri,29L. Cerrito,75F. Cerutti,47
S. A. Cetin,18bF. Cevenini,102a,102bA. Chafaq,135aD. Chakraborty,106K. Chan,2B. Chapleau,85J. D. Chapman,27 J. W. Chapman,87E. Chareyre,78D. G. Charlton,17V. Chavda,82S. Cheatham,71S. Chekanov,5S. V. Chekulaev,159a
G. A. Chelkov,65M. A. Chelstowska,104C. Chen,64H. Chen,24L. Chen,2S. Chen,32cT. Chen,32cX. Chen,172 S. Cheng,32aA. Cheplakov,65V. F. Chepurnov,65R. Cherkaoui El Moursli,135eV. Chernyatin,24E. Cheu,6
S. L. Cheung,158L. Chevalier,136G. Chiefari,102a,102bL. Chikovani,51J. T. Childers,58aA. Chilingarov,71 G. Chiodini,72aM. V. Chizhov,65G. Choudalakis,30S. Chouridou,137I. A. Christidi,77A. Christov,48 D. Chromek-Burckhart,29M. L. Chu,151J. Chudoba,125G. Ciapetti,132a,132bK. Ciba,37A. K. Ciftci,3aR. Ciftci,3a D. Cinca,33V. Cindro,74M. D. Ciobotaru,163C. Ciocca,19a,19bA. Ciocio,14M. Cirilli,87M. Ciubancan,25aA. Clark,49
P. J. Clark,45W. Cleland,123J. C. Clemens,83B. Clement,55C. Clement,146a,146bR. W. Clifft,129Y. Coadou,83 M. Cobal,164a,164cA. Coccaro,50a,50bJ. Cochran,64P. Coe,118J. G. Cogan,143J. Coggeshall,165E. Cogneras,177 C. D. Cojocaru,28J. Colas,4A. P. Colijn,105C. Collard,115N. J. Collins,17C. Collins-Tooth,53J. Collot,55G. Colon,84
P. Conde Muin˜o,124aE. Coniavitis,118M. C. Conidi,11M. Consonni,104S. Constantinescu,25aC. Conta,119a,119b F. Conventi,102a,iJ. Cook,29M. Cooke,14B. D. Cooper,77A. M. Cooper-Sarkar,118N. J. Cooper-Smith,76K. Copic,34
T. Cornelissen,50a,50bM. Corradi,19aF. Corriveau,85,jA. Cortes-Gonzalez,165G. Cortiana,99G. Costa,89a M. J. Costa,167D. Costanzo,139T. Costin,30D. Coˆte´,29R. Coura Torres,23aL. Courneyea,169G. Cowan,76 C. Cowden,27B. E. Cox,82K. Cranmer,108F. Crescioli,122a,122bM. Cristinziani,20G. Crosetti,36a,36bR. Crupi,72a,72b
S. Cre´pe´-Renaudin,55C.-M. Cuciuc,25aC. Cuenca Almenar,175T. Cuhadar Donszelmann,139S. Cuneo,50a,50b M. Curatolo,47C. J. Curtis,17P. Cwetanski,61H. Czirr,141Z. Czyczula,117S. D’Auria,53M. D’Onofrio,73 A. D’Orazio,132a,132bA. Da Rocha Gesualdi Mello,23aP. V. M. Da Silva,23aC. Da Via,82W. Dabrowski,37 A. Dahlhoff,48T. Dai,87C. Dallapiccola,84M. Dam,35M. Dameri,50a,50bD. S. Damiani,137H. O. Danielsson,29 D. Dannheim,99V. Dao,49G. Darbo,50aG. L. Darlea,25bC. Daum,105J. P. Dauvergne,29W. Davey,86T. Davidek,126
N. Davidson,86R. Davidson,71M. Davies,93A. R. Davison,77E. Dawe,142I. Dawson,139J. W. Dawson,5,a R. K. Daya,39K. De,7R. de Asmundis,102aS. De Castro,19a,19bP. E. De Castro Faria Salgado,24S. De Cecco,78 J. de Graat,98N. De Groot,104P. de Jong,105C. De La Taille,115H. De la Torre,80B. De Lotto,164a,164cL. De Mora,71 L. De Nooij,105M. De Oliveira Branco,29D. De Pedis,132aP. de Saintignon,55A. De Salvo,132aU. De Sanctis,164a,164c
A. De Santo,149J. B. De Vivie De Regie,115S. Dean,77D. V. Dedovich,65J. Degenhardt,120M. Dehchar,118 M. Deile,98C. Del Papa,164a,164cJ. Del Peso,80T. Del Prete,122a,122bA. Dell’Acqua,29L. Dell’Asta,89a,89b M. Della Pietra,102a,iD. della Volpe,102a,102bM. Delmastro,29P. Delpierre,83N. Delruelle,29P. A. Delsart,55 C. Deluca,148S. Demers,175M. Demichev,65B. Demirkoz,11,kJ. Deng,163S. P. Denisov,128D. Derendarz,38 J. E. Derkaoui,135dF. Derue,78P. Dervan,73K. Desch,20E. Devetak,148P. O. Deviveiros,158A. Dewhurst,129 B. DeWilde,148S. Dhaliwal,158R. Dhullipudi,24,lA. Di Ciaccio,133a,133bL. Di Ciaccio,4A. Di Girolamo,29 B. Di Girolamo,29S. Di Luise,134a,134bA. Di Mattia,88B. Di Micco,29R. Di Nardo,133a,133bA. Di Simone,133a,133b R. Di Sipio,19a,19bM. A. Diaz,31aF. Diblen,18cE. B. Diehl,87H. Dietl,99J. Dietrich,48T. A. Dietzsch,58aS. Diglio,115 K. Dindar Yagci,39J. Dingfelder,20C. Dionisi,132a,132bP. Dita,25aS. Dita,25aF. Dittus,29F. Djama,83R. Djilkibaev,108
T. Djobava,51M. A. B. do Vale,23aA. Do Valle Wemans,124aT. K. O. Doan,4M. Dobbs,85R. Dobinson,29,a D. Dobos,42E. Dobson,29M. Dobson,163J. Dodd,34O. B. Dogan,18a,aC. Doglioni,118T. Doherty,53Y. Doi,66,a
J. Dolejsi,126I. Dolenc,74Z. Dolezal,126B. A. Dolgoshein,96,aT. Dohmae,155M. Donadelli,23bM. Donega,120 J. Donini,55J. Dopke,29A. Doria,102aA. Dos Anjos,172M. Dosil,11A. Dotti,122a,122bM. T. Dova,70J. D. Dowell,17
A. D. Doxiadis,105A. T. Doyle,53Z. Drasal,126J. Drees,174N. Dressnandt,120H. Drevermann,29C. Driouichi,35 M. Dris,9J. Dubbert,99T. Dubbs,137S. Dube,14E. Duchovni,171G. Duckeck,98A. Dudarev,29F. Dudziak,64 M. Du¨hrssen,29I. P. Duerdoth,82L. Duflot,115M-A. Dufour,85M. Dunford,29H. Duran Yildiz,3bR. Duxfield,139 M. Dwuznik,37F. Dydak,29D. Dzahini,55M. Du¨ren,52W. L. Ebenstein,44J. Ebke,98S. Eckert,48S. Eckweiler,81
K. Edmonds,81C. A. Edwards,76W. Ehrenfeld,41T. Ehrich,99T. Eifert,29G. Eigen,13K. Einsweiler,14 E. Eisenhandler,75T. Ekelof,166M. El Kacimi,135cM. Ellert,166S. Elles,4F. Ellinghaus,81K. Ellis,75N. Ellis,29
J. Elmsheuser,98M. Elsing,29R. Ely,14D. Emeliyanov,129R. Engelmann,148A. Engl,98B. Epp,62A. Eppig,87 J. Erdmann,54A. Ereditato,16D. Eriksson,146aJ. Ernst,1M. Ernst,24J. Ernwein,136D. Errede,165S. Errede,165 E. Ertel,81M. Escalier,115C. Escobar,167X. Espinal Curull,11B. Esposito,47F. Etienne,83A. I. Etienvre,136 E. Etzion,153D. Evangelakou,54H. Evans,61L. Fabbri,19a,19bC. Fabre,29R. M. Fakhrutdinov,128S. Falciano,132a A. C. Falou,115Y. Fang,172M. Fanti,89a,89bA. Farbin,7A. Farilla,134aJ. Farley,148T. Farooque,158S. M. Farrington,118 P. Farthouat,29P. Fassnacht,29D. Fassouliotis,8B. Fatholahzadeh,158A. Favareto,89a,89bL. Fayard,115S. Fazio,36a,36b R. Febbraro,33P. Federic,144aO. L. Fedin,121I. Fedorko,29W. Fedorko,88M. Fehling-Kaschek,48L. Feligioni,83
D. Fellmann,5C. U. Felzmann,86C. Feng,32dE. J. Feng,30A. B. Fenyuk,128J. Ferencei,144bJ. Ferland,93 W. Fernando,109S. Ferrag,53J. Ferrando,53V. Ferrara,41A. Ferrari,166P. Ferrari,105R. Ferrari,119aA. Ferrer,167
M. L. Ferrer,47D. Ferrere,49C. Ferretti,87A. Ferretto Parodi,50a,50bM. Fiascaris,30F. Fiedler,81A. Filipcˇicˇ,74 A. Filippas,9F. Filthaut,104M. Fincke-Keeler,169M. C. N. Fiolhais,124a,hL. Fiorini,11A. Firan,39G. Fischer,41
P. Fischer,20M. J. Fisher,109S. M. Fisher,129M. Flechl,48I. Fleck,141J. Fleckner,81P. Fleischmann,173 S. Fleischmann,174T. Flick,174L. R. Flores Castillo,172M. J. Flowerdew,99F. Fo¨hlisch,58aM. Fokitis,9 T. Fonseca Martin,16D. A. Forbush,138A. Formica,136A. Forti,82D. Fortin,159aJ. M. Foster,82D. Fournier,115 A. Foussat,29A. J. Fowler,44K. Fowler,137H. Fox,71P. Francavilla,122a,122bS. Franchino,119a,119bD. Francis,29
T. Frank,171M. Franklin,57S. Franz,29M. Fraternali,119a,119bS. Fratina,120S. T. French,27R. Froeschl,29 D. Froidevaux,29J. A. Frost,27C. Fukunaga,156E. Fullana Torregrosa,29J. Fuster,167C. Gabaldon,29O. Gabizon,171 T. Gadfort,24S. Gadomski,49G. Gagliardi,50a,50bP. Gagnon,61C. Galea,98E. J. Gallas,118M. V. Gallas,29V. Gallo,16
B. J. Gallop,129P. Gallus,125E. Galyaev,40K. K. Gan,109Y. S. Gao,143,fV. A. Gapienko,128A. Gaponenko,14 F. Garberson,175M. Garcia-Sciveres,14C. Garcı´a,167J. E. Garcı´a Navarro,49R. W. Gardner,30N. Garelli,29 H. Garitaonandia,105V. Garonne,29J. Garvey,17C. Gatti,47G. Gaudio,119aO. Gaumer,49B. Gaur,141L. Gauthier,136 I. L. Gavrilenko,94C. Gay,168G. Gaycken,20J-C. Gayde,29E. N. Gazis,9P. Ge,32dC. N. P. Gee,129D. A. A. Geerts,105
Ch. Geich-Gimbel,20K. Gellerstedt,146a,146bC. Gemme,50aA. Gemmell,53M. H. Genest,98S. Gentile,132a,132b M. George,54S. George,76P. Gerlach,174A. Gershon,153C. Geweniger,58aH. Ghazlane,135bP. Ghez,4 N. Ghodbane,33B. Giacobbe,19aS. Giagu,132a,132bV. Giakoumopoulou,8V. Giangiobbe,122a,122bF. Gianotti,29
B. Gibbard,24A. Gibson,158S. M. Gibson,29L. M. Gilbert,118M. Gilchriese,14V. Gilewsky,91D. Gillberg,28 A. R. Gillman,129D. M. Gingrich,2,eJ. Ginzburg,153N. Giokaris,8R. Giordano,102a,102bF. M. Giorgi,15 P. Giovannini,99P. F. Giraud,136D. Giugni,89aM. Giunta,132a,132bP. Giusti,19aB. K. Gjelsten,117L. K. Gladilin,97 C. Glasman,80J. Glatzer,48A. Glazov,41K. W. Glitza,174G. L. Glonti,65J. Godfrey,142J. Godlewski,29M. Goebel,41
T. Go¨pfert,43C. Goeringer,81C. Go¨ssling,42T. Go¨ttfert,99S. Goldfarb,87D. Goldin,39T. Golling,175 S. N. Golovnia,128A. Gomes,124a,cL. S. Gomez Fajardo,41R. Gonc¸alo,76J. Goncalves Pinto Firmino Da Costa,41 L. Gonella,20A. Gonidec,29S. Gonzalez,172S. Gonza´lez de la Hoz,167M. L. Gonzalez Silva,26S. Gonzalez-Sevilla,49
J. J. Goodson,148L. Goossens,29P. A. Gorbounov,95H. A. Gordon,24I. Gorelov,103G. Gorfine,174B. Gorini,29 E. Gorini,72a,72bA. Gorisˇek,74E. Gornicki,38S. A. Gorokhov,128V. N. Goryachev,128B. Gosdzik,41M. Gosselink,105
M. I. Gostkin,65M. Gouane`re,4I. Gough Eschrich,163M. Gouighri,135aD. Goujdami,135cM. P. Goulette,49 A. G. Goussiou,138C. Goy,4I. Grabowska-Bold,163,gV. Grabski,176P. Grafstro¨m,29C. Grah,174K-J. Grahn,147
F. Grancagnolo,72aS. Grancagnolo,15V. Grassi,148V. Gratchev,121N. Grau,34H. M. Gray,29J. A. Gray,148 E. Graziani,134aO. G. Grebenyuk,121D. Greenfield,129T. Greenshaw,73Z. D. Greenwood,24,lI. M. Gregor,41
P. Grenier,143E. Griesmayer,46J. Griffiths,138N. Grigalashvili,65A. A. Grillo,137S. Grinstein,11Ph. Gris,33 Y. V. Grishkevich,97J.-F. Grivaz,115J. Grognuz,29M. Groh,99E. Gross,171J. Grosse-Knetter,54J. Groth-Jensen,79 K. Grybel,141V. J. Guarino,5D. Guest,175C. Guicheney,33A. Guida,72a,72bT. Guillemin,4S. Guindon,54H. Guler,85,m
J. Gunther,125B. Guo,158J. Guo,34A. Gupta,30Y. Gusakov,65V. N. Gushchin,128A. Gutierrez,93P. Gutierrez,111 N. Guttman,153O. Gutzwiller,172C. Guyot,136C. Gwenlan,118C. B. Gwilliam,73A. Haas,143S. Haas,29C. Haber,14
R. Hackenburg,24H. K. Hadavand,39D. R. Hadley,17P. Haefner,99F. Hahn,29S. Haider,29Z. Hajduk,38 H. Hakobyan,176J. Haller,54K. Hamacher,174P. Hamal,113A. Hamilton,49S. Hamilton,161H. Han,32aL. Han,32b
K. Hanagaki,116M. Hance,120C. Handel,81P. Hanke,58aJ. R. Hansen,35J. B. Hansen,35J. D. Hansen,35 P. H. Hansen,35P. Hansson,143K. Hara,160G. A. Hare,137T. Harenberg,174S. Harkusha,90D. Harper,87 R. D. Harrington,21O. M. Harris,138K. Harrison,17J. Hartert,48F. Hartjes,105T. Haruyama,66A. Harvey,56 S. Hasegawa,101Y. Hasegawa,140S. Hassani,136M. Hatch,29D. Hauff,99S. Haug,16M. Hauschild,29R. Hauser,88
M. Havranek,20B. M. Hawes,118C. M. Hawkes,17R. J. Hawkings,29D. Hawkins,163T. Hayakawa,67D. Hayden,76 H. S. Hayward,73S. J. Haywood,129E. Hazen,21M. He,32dS. J. Head,17V. Hedberg,79L. Heelan,7S. Heim,88 B. Heinemann,14S. Heisterkamp,35L. Helary,4M. Heldmann,48M. Heller,115S. Hellman,146a,146bC. Helsens,11
R. C. W. Henderson,71M. Henke,58aA. Henrichs,54A. M. Henriques Correia,29S. Henrot-Versille,115 F. Henry-Couannier,83C. Hensel,54T. Henß,174C. M. Hernandez,7Y. Herna´ndez Jime´nez,167R. Herrberg,15
A. D. Hershenhorn,152G. Herten,48R. Hertenberger,98L. Hervas,29N. P. Hessey,105A. Hidvegi,146a E. Higo´n-Rodriguez,167D. Hill,5,aJ. C. Hill,27N. Hill,5K. H. Hiller,41S. Hillert,20S. J. Hillier,17I. Hinchliffe,14
E. Hines,120M. Hirose,116F. Hirsch,42D. Hirschbuehl,174J. Hobbs,148N. Hod,153M. C. Hodgkinson,139 P. Hodgson,139A. Hoecker,29M. R. Hoeferkamp,103J. Hoffman,39D. Hoffmann,83M. Hohlfeld,81M. Holder,141
A. Holmes,118S. O. Holmgren,146aT. Holy,127J. L. Holzbauer,88Y. Homma,67T. M. Hong,120
L. Hooft van Huysduynen,108T. Horazdovsky,127C. Horn,143S. Horner,48K. Horton,118J-Y. Hostachy,55S. Hou,151 M. A. Houlden,73A. Hoummada,135aJ. Howarth,82D. F. Howell,118I. Hristova,41J. Hrivnac,115I. Hruska,125 T. Hryn’ova,4P. J. Hsu,175S.-C. Hsu,14G. S. Huang,111Z. Hubacek,127F. Hubaut,83F. Huegging,20T. B. Huffman,118
E. W. Hughes,34G. Hughes,71R. E. Hughes-Jones,82M. Huhtinen,29P. Hurst,57M. Hurwitz,14U. Husemann,41 N. Huseynov,65,nJ. Huston,88J. Huth,57G. Iacobucci,102aG. Iakovidis,9M. Ibbotson,82I. Ibragimov,141 R. Ichimiya,67L. Iconomidou-Fayard,115J. Idarraga,115M. Idzik,37P. Iengo,102a,102bO. Igonkina,105Y. Ikegami,66
M. Ikeno,66Y. Ilchenko,39D. Iliadis,154D. Imbault,78M. Imhaeuser,174M. Imori,155T. Ince,20J. Inigo-Golfin,29 P. Ioannou,8M. Iodice,134aG. Ionescu,4A. Irles Quiles,167K. Ishii,66A. Ishikawa,67M. Ishino,66
R. Ishmukhametov,39C. Issever,118S. Istin,18aY. Itoh,101A. V. Ivashin,128W. Iwanski,38H. Iwasaki,66J. M. Izen,40 V. Izzo,102aB. Jackson,120J. N. Jackson,73P. Jackson,143M. R. Jaekel,29V. Jain,61K. Jakobs,48S. Jakobsen,35 J. Jakubek,127D. K. Jana,111E. Jankowski,158E. Jansen,77A. Jantsch,99M. Janus,20G. Jarlskog,79L. Jeanty,57 K. Jelen,37I. Jen-La Plante,30P. Jenni,29A. Jeremie,4P. Jezˇ,35S. Je´ze´quel,4M. K. Jha,19aH. Ji,172W. Ji,81J. Jia,148
Y. Jiang,32bM. Jimenez Belenguer,41G. Jin,32bS. Jin,32aO. Jinnouchi,157M. D. Joergensen,35D. Joffe,39 L. G. Johansen,13M. Johansen,146a,146bK. E. Johansson,146aP. Johansson,139S. Johnert,41K. A. Johns,6 K. Jon-And,146a,146bG. Jones,82R. W. L. Jones,71T. W. Jones,77T. J. Jones,73O. Jonsson,29C. Joram,29 P. M. Jorge,124a,cJ. Joseph,14X. Ju,130V. Juranek,125P. Jussel,62V. V. Kabachenko,128S. Kabana,16M. Kaci,167 A. Kaczmarska,38P. Kadlecik,35M. Kado,115H. Kagan,109M. Kagan,57S. Kaiser,99E. Kajomovitz,152S. Kalinin,174
L. V. Kalinovskaya,65S. Kama,39N. Kanaya,155M. Kaneda,155T. Kanno,157V. A. Kantserov,96J. Kanzaki,66 B. Kaplan,175A. Kapliy,30J. Kaplon,29D. Kar,43M. Karagoz,118M. Karnevskiy,41K. Karr,5V. Kartvelishvili,71
A. N. Karyukhin,128L. Kashif,172A. Kasmi,39R. D. Kass,109A. Kastanas,13M. Kataoka,4Y. Kataoka,155 E. Katsoufis,9J. Katzy,41V. Kaushik,6K. Kawagoe,67T. Kawamoto,155G. Kawamura,81M. S. Kayl,105 V. A. Kazanin,107M. Y. Kazarinov,65J. R. Keates,82R. Keeler,169R. Kehoe,39M. Keil,54G. D. Kekelidze,65 M. Kelly,82J. Kennedy,98C. J. Kenney,143M. Kenyon,53O. Kepka,125N. Kerschen,29B. P. Kersˇevan,74S. Kersten,174
K. Kessoku,155C. Ketterer,48J. Keung,158M. Khakzad,28F. Khalil-zada,10H. Khandanyan,165A. Khanov,112 D. Kharchenko,65A. Khodinov,148A. G. Kholodenko,128A. Khomich,58aT. J. Khoo,27G. Khoriauli,20 A. Khoroshilov,174N. Khovanskiy,65V. Khovanskiy,95E. Khramov,65J. Khubua,51H. Kim,7M. S. Kim,2 P. C. Kim,143S. H. Kim,160N. Kimura,170O. Kind,15B. T. King,73M. King,67R. S. B. King,118J. Kirk,129 G. P. Kirsch,118L. E. Kirsch,22A. E. Kiryunin,99D. Kisielewska,37T. Kittelmann,123A. M. Kiver,128H. Kiyamura,67
E. Kladiva,144bJ. Klaiber-Lodewigs,42M. Klein,73U. Klein,73K. Kleinknecht,81M. Klemetti,85A. Klier,171 A. Klimentov,24R. Klingenberg,42E. B. Klinkby,35T. Klioutchnikova,29P. F. Klok,104S. Klous,105E.-E. Kluge,58a
T. Kluge,73P. Kluit,105S. Kluth,99E. Kneringer,62J. Knobloch,29E. B. F. G. Knoops,83A. Knue,54B. R. Ko,44 T. Kobayashi,155M. Kobel,43B. Koblitz,29M. Kocian,143A. Kocnar,113P. Kodys,126K. Ko¨neke,29A. C. Ko¨nig,104
S. Koenig,81L. Ko¨pke,81F. Koetsveld,104P. Koevesarki,20T. Koffas,29E. Koffeman,105F. Kohn,54Z. Kohout,127 T. Kohriki,66T. Koi,143T. Kokott,20G. M. Kolachev,107H. Kolanoski,15V. Kolesnikov,65I. Koletsou,89aJ. Koll,88
D. Kollar,29M. Kollefrath,48S. D. Kolya,82A. A. Komar,94J. R. Komaragiri,142T. Kondo,66T. Kono,41,o A. I. Kononov,48R. Konoplich,108,pN. Konstantinidis,77A. Kootz,174S. Koperny,37S. V. Kopikov,128K. Korcyl,38
K. Kordas,154V. Koreshev,128A. Korn,14A. Korol,107I. Korolkov,11E. V. Korolkova,139V. A. Korotkov,128 O. Kortner,99S. Kortner,99V. V. Kostyukhin,20M. J. Kotama¨ki,29S. Kotov,99V. M. Kotov,65A. Kotwal,44 C. Kourkoumelis,8V. Kouskoura,154A. Koutsman,105R. Kowalewski,169T. Z. Kowalski,37W. Kozanecki,136
A. S. Kozhin,128V. Kral,127V. A. Kramarenko,97G. Kramberger,74O. Krasel,42M. W. Krasny,78 A. Krasznahorkay,108J. Kraus,88A. Kreisel,153F. Krejci,127J. Kretzschmar,73N. Krieger,54P. Krieger,158
K. Kroeninger,54H. Kroha,99J. Kroll,120J. Kroseberg,20J. Krstic,12aU. Kruchonak,65H. Kru¨ger,20 Z. V. Krumshteyn,65A. Kruth,20T. Kubota,155S. Kuehn,48A. Kugel,58cT. Kuhl,174D. Kuhn,62V. Kukhtin,65 Y. Kulchitsky,90S. Kuleshov,31bC. Kummer,98M. Kuna,78N. Kundu,118J. Kunkle,120A. Kupco,125H. Kurashige,67 M. Kurata,160Y. A. Kurochkin,90V. Kus,125W. Kuykendall,138M. Kuze,157P. Kuzhir,91O. Kvasnicka,125J. Kvita,29
R. Kwee,15A. La Rosa,29L. La Rotonda,36a,36bL. Labarga,80J. Labbe,4S. Lablak,135aC. Lacasta,167 F. Lacava,132a,132bH. Lacker,15D. Lacour,78V. R. Lacuesta,167E. Ladygin,65R. Lafaye,4B. Laforge,78T. Lagouri,80
S. Lai,48E. Laisne,55M. Lamanna,29C. L. Lampen,6W. Lampl,6E. Lancon,136U. Landgraf,48M. P. J. Landon,75 H. Landsman,152J. L. Lane,82C. Lange,41A. J. Lankford,163F. Lanni,24K. Lantzsch,29V. V. Lapin,128,aS. Laplace,78
C. Lapoire,20J. F. Laporte,136T. Lari,89aA. V. Larionov,128A. Larner,118C. Lasseur,29M. Lassnig,29W. Lau,118 P. Laurelli,47A. Lavorato,118W. Lavrijsen,14P. Laycock,73A. B. Lazarev,65A. Lazzaro,89a,89bO. Le Dortz,78 E. Le Guirriec,83C. Le Maner,158E. Le Menedeu,136A. Lebedev,64C. Lebel,93T. LeCompte,5F. Ledroit-Guillon,55
H. Lee,105J. S. H. Lee,150S. C. Lee,151L. Lee,175M. Lefebvre,169M. Legendre,136A. Leger,49B. C. LeGeyt,120 F. Legger,98C. Leggett,14M. Lehmacher,20G. Lehmann Miotto,29X. Lei,6M. A. L. Leite,23bR. Leitner,126 D. Lellouch,171J. Lellouch,78M. Leltchouk,34V. Lendermann,58aK. J. C. Leney,145bT. Lenz,174G. Lenzen,174
B. Lenzi,136K. Leonhardt,43S. Leontsinis,9C. Leroy,93J.-R. Lessard,169J. Lesser,146aC. G. Lester,27 A. Leung Fook Cheong,172J. Leveˆque,4D. Levin,87L. J. Levinson,171M. S. Levitski,128M. Lewandowska,21
A. Lewis,118G. H. Lewis,108A. M. Leyko,20M. Leyton,15B. Li,83H. Li,172S. Li,32b,dX. Li,87Z. Liang,39 Z. Liang,118,qB. Liberti,133aP. Lichard,29M. Lichtnecker,98K. Lie,165W. Liebig,13R. Lifshitz,152J. N. Lilley,17
C. Limbach,20A. Limosani,86M. Limper,63S. C. Lin,151,rF. Linde,105J. T. Linnemann,88E. Lipeles,120 L. Lipinsky,125A. Lipniacka,13T. M. Liss,165D. Lissauer,24A. Lister,49A. M. Litke,137C. Liu,28D. Liu,151,s
H. Liu,87J. B. Liu,87M. Liu,32bS. Liu,2Y. Liu,32bM. Livan,119a,119bS. S. A. Livermore,118A. Lleres,55 J. Llorente Merino,80S. L. Lloyd,75E. Lobodzinska,41P. Loch,6W. S. Lockman,137S. Lockwitz,175 T. Loddenkoetter,20F. K. Loebinger,82A. Loginov,175C. W. Loh,168T. Lohse,15K. Lohwasser,48M. Lokajicek,125
J. Loken,118V. P. Lombardo,4R. E. Long,71L. Lopes,124a,cD. Lopez Mateos,34,tM. Losada,162P. Loscutoff,14 F. Lo Sterzo,132a,132bM. J. Losty,159aX. Lou,40A. Lounis,115K. F. Loureiro,162J. Love,21P. A. Love,71 A. J. Lowe,143,fF. Lu,32aL. Lu,39H. J. Lubatti,138C. Luci,132a,132bA. Lucotte,55A. Ludwig,43D. Ludwig,41 I. Ludwig,48J. Ludwig,48F. Luehring,61G. Luijckx,105D. Lumb,48L. Luminari,132aE. Lund,117B. Lund-Jensen,147 B. Lundberg,79J. Lundberg,146a,146bJ. Lundquist,35M. Lungwitz,81A. Lupi,122a,122bG. Lutz,99D. Lynn,24J. Lys,14
E. Lytken,79H. Ma,24L. L. Ma,172J. A. Macana Goia,93G. Maccarrone,47A. Macchiolo,99B. Macˇek,74 J. Machado Miguens,124aD. Macina,49R. Mackeprang,35R. J. Madaras,14W. F. Mader,43R. Maenner,58c T. Maeno,24P. Ma¨ttig,174S. Ma¨ttig,41P. J. Magalhaes Martins,124a,hL. Magnoni,29E. Magradze,54Y. Mahalalel,153
K. Mahboubi,48G. Mahout,17C. Maiani,132a,132bC. Maidantchik,23aA. Maio,124a,cS. Majewski,24Y. Makida,66 N. Makovec,115P. Mal,6Pa. Malecki,38P. Malecki,38V. P. Maleev,121F. Malek,55U. Mallik,63D. Malon,5 S. Maltezos,9V. Malyshev,107S. Malyukov,29R. Mameghani,98J. Mamuzic,12bA. Manabe,66L. Mandelli,89a I. Mandic´,74R. Mandrysch,15J. Maneira,124aP. S. Mangeard,88I. D. Manjavidze,65A. Mann,54P. M. Manning,137 A. Manousakis-Katsikakis,8B. Mansoulie,136A. Manz,99A. Mapelli,29L. Mapelli,29L. March,80J. F. Marchand,29
F. Marchese,133a,133bG. Marchiori,78M. Marcisovsky,125A. Marin,21,aC. P. Marino,61F. Marroquim,23a R. Marshall,82Z. Marshall,29F. K. Martens,158S. Marti-Garcia,167A. J. Martin,175B. Martin,29B. Martin,88
F. F. Martin,120J. P. Martin,93Ph. Martin,55T. A. Martin,17B. Martin dit Latour,49M. Martinez,11 V. Martinez Outschoorn,57A. C. Martyniuk,82M. Marx,82F. Marzano,132aA. Marzin,111L. Masetti,81 T. Mashimo,155R. Mashinistov,94J. Masik,82A. L. Maslennikov,107M. Maß,42I. Massa,19a,19bG. Massaro,105 N. Massol,4P. Mastrandrea,132a,132bA. Mastroberardino,36a,36bT. Masubuchi,155M. Mathes,20P. Matricon,115
H. Matsumoto,155H. Matsunaga,155T. Matsushita,67C. Mattravers,118,uJ. M. Maugain,29S. J. Maxfield,73 D. A. Maximov,107E. N. May,5A. Mayne,139R. Mazini,151M. Mazur,20M. Mazzanti,89aE. Mazzoni,122a,122b S. P. Mc Kee,87A. McCarn,165R. L. McCarthy,148T. G. McCarthy,28N. A. McCubbin,129K. W. McFarlane,56 J. A. Mcfayden,139H. McGlone,53G. Mchedlidze,51R. A. McLaren,29T. Mclaughlan,17S. J. McMahon,129
R. A. McPherson,169,jA. Meade,84J. Mechnich,105M. Mechtel,174M. Medinnis,41R. Meera-Lebbai,111 T. Meguro,116R. Mehdiyev,93S. Mehlhase,35A. Mehta,73K. Meier,58aJ. Meinhardt,48B. Meirose,79 C. Melachrinos,30B. R. Mellado Garcia,172L. Mendoza Navas,162Z. Meng,151,sA. Mengarelli,19a,19bS. Menke,99
C. Menot,29E. Meoni,11K. M. Mercurio,57P. Mermod,118L. Merola,102a,102bC. Meroni,89aF. S. Merritt,30 A. Messina,29J. Metcalfe,103A. S. Mete,64S. Meuser,20C. Meyer,81J-P. Meyer,136J. Meyer,173J. Meyer,54
T. C. Meyer,29W. T. Meyer,64J. Miao,32dS. Michal,29L. Micu,25aR. P. Middleton,129P. Miele,29S. Migas,73 L. Mijovic´,41G. Mikenberg,171M. Mikestikova,125M. Mikuzˇ,74D. W. Miller,143R. J. Miller,88W. J. Mills,168 C. Mills,57A. Milov,171D. A. Milstead,146a,146bD. Milstein,171A. A. Minaenko,128M. Min˜ano,167I. A. Minashvili,65
A. I. Mincer,108B. Mindur,37M. Mineev,65Y. Ming,130L. M. Mir,11G. Mirabelli,132aL. Miralles Verge,11 A. Misiejuk,76J. Mitrevski,137G. Y. Mitrofanov,128V. A. Mitsou,167S. Mitsui,66P. S. Miyagawa,82K. Miyazaki,67
J. U. Mjo¨rnmark,79T. Moa,146a,146bP. Mockett,138S. Moed,57V. Moeller,27K. Mo¨nig,41N. Mo¨ser,20 S. Mohapatra,148B. Mohn,13W. Mohr,48S. Mohrdieck-Mo¨ck,99A. M. Moisseev,128,aR. Moles-Valls,167 J. Molina-Perez,29J. Monk,77E. Monnier,83S. Montesano,89a,89bF. Monticelli,70S. Monzani,19a,19bR. W. Moore,2 G. F. Moorhead,86C. Mora Herrera,49A. Moraes,53A. Morais,124a,cN. Morange,136G. Morello,36a,36bD. Moreno,81
M. Moreno Lla´cer,167P. Morettini,50aM. Morii,57J. Morin,75Y. Morita,66A. K. Morley,29G. Mornacchi,29 M-C. Morone,49S. V. Morozov,96J. D. Morris,75H. G. Moser,99M. Mosidze,51J. Moss,109R. Mount,143 E. Mountricha,9S. V. Mouraviev,94E. J. W. Moyse,84M. Mudrinic,12bF. Mueller,58aJ. Mueller,123K. Mueller,20
T. A. Mu¨ller,98D. Muenstermann,29A. Muijs,105A. Muir,168Y. Munwes,153K. Murakami,66W. J. Murray,129 I. Mussche,105E. Musto,102a,102bA. G. Myagkov,128M. Myska,125J. Nadal,11K. Nagai,160K. Nagano,66 Y. Nagasaka,60A. M. Nairz,29Y. Nakahama,115K. Nakamura,155I. Nakano,110G. Nanava,20A. Napier,161
M. Nash,77,uN. R. Nation,21T. Nattermann,20T. Naumann,41G. Navarro,162H. A. Neal,87E. Nebot,80 P. Yu. Nechaeva,94A. Negri,119a,119bG. Negri,29S. Nektarijevic,49A. Nelson,64S. Nelson,143T. K. Nelson,143
S. Nemecek,125P. Nemethy,108A. A. Nepomuceno,23aM. Nessi,29,vS. Y. Nesterov,121M. S. Neubauer,165 A. Neusiedl,81R. M. Neves,108P. Nevski,24P. R. Newman,17R. B. Nickerson,118R. Nicolaidou,136L. Nicolas,139 B. Nicquevert,29F. Niedercorn,115J. Nielsen,137T. Niinikoski,29A. Nikiforov,15V. Nikolaenko,128K. Nikolaev,65
I. Nikolic-Audit,78K. Nikolopoulos,24H. Nilsen,48P. Nilsson,7Y. Ninomiya,155A. Nisati,132aT. Nishiyama,67 R. Nisius,99L. Nodulman,5M. Nomachi,116I. Nomidis,154H. Nomoto,155M. Nordberg,29B. Nordkvist,146a,146b P. R. Norton,129J. Novakova,126M. Nozaki,66M. Nozˇicˇka,41L. Nozka,113I. M. Nugent,159aA.-E. Nuncio-Quiroz,20
G. Nunes Hanninger,20T. Nunnemann,98E. Nurse,77T. Nyman,29B. J. O’Brien,45S. W. O’Neale,17,a D. C. O’Neil,142V. O’Shea,53F. G. Oakham,28,eH. Oberlack,99J. Ocariz,78A. Ochi,67S. Oda,155S. Odaka,66 J. Odier,83H. Ogren,61A. Oh,82S. H. Oh,44C. C. Ohm,146a,146bT. Ohshima,101H. Ohshita,140T. K. Ohska,66
T. Ohsugi,59S. Okada,67H. Okawa,163Y. Okumura,101T. Okuyama,155M. Olcese,50aA. G. Olchevski,65 M. Oliveira,124a,hD. Oliveira Damazio,24E. Oliver Garcia,167D. Olivito,120A. Olszewski,38J. Olszowska,38 C. Omachi,67A. Onofre,124a,wP. U. E. Onyisi,30C. J. Oram,159aM. J. Oreglia,30Y. Oren,153D. Orestano,134a,134b
I. Orlov,107C. Oropeza Barrera,53R. S. Orr,158E. O. Ortega,130B. Osculati,50a,50bR. Ospanov,120C. Osuna,11 G. Otero y Garzon,26J. P. Ottersbach,105M. Ouchrif,135dF. Ould-Saada,117A. Ouraou,136Q. Ouyang,32aM. Owen,82
S. Owen,139O. K. Øye,13V. E. Ozcan,18aN. Ozturk,7A. Pacheco Pages,11C. Padilla Aranda,11E. Paganis,139 F. Paige,24K. Pajchel,117S. Palestini,29D. Pallin,33A. Palma,124a,cJ. D. Palmer,17Y. B. Pan,172E. Panagiotopoulou,9
B. Panes,31aN. Panikashvili,87S. Panitkin,24D. Pantea,25aM. Panuskova,125V. Paolone,123A. Papadelis,146a Th. D. Papadopoulou,9A. Paramonov,5W. Park,24,xM. A. Parker,27F. Parodi,50a,50bJ. A. Parsons,34U. Parzefall,48
E. Pasqualucci,132aA. Passeri,134aF. Pastore,134a,134bFr. Pastore,29G. Pa´sztor,49,yS. Pataraia,172N. Patel,150 J. R. Pater,82S. Patricelli,102a,102bT. Pauly,29M. Pecsy,144aM. I. Pedraza Morales,172S. V. Peleganchuk,107
H. Peng,172R. Pengo,29A. Penson,34J. Penwell,61M. Perantoni,23aK. Perez,34,tT. Perez Cavalcanti,41 E. Perez Codina,11M. T. Pe´rez Garcı´a-Estan˜,167V. Perez Reale,34I. Peric,20L. Perini,89a,89bH. Pernegger,29
R. Perrino,72aP. Perrodo,4S. Persembe,3aV. D. Peshekhonov,65O. Peters,105B. A. Petersen,29J. Petersen,29 T. C. Petersen,35E. Petit,83A. Petridis,154C. Petridou,154E. Petrolo,132aF. Petrucci,134a,134bD. Petschull,41
M. Petteni,142R. Pezoa,31bA. Phan,86A. W. Phillips,27P. W. Phillips,129G. Piacquadio,29E. Piccaro,75 M. Piccinini,19a,19bA. Pickford,53S. M. Piec,41R. Piegaia,26J. E. Pilcher,30A. D. Pilkington,82J. Pina,124a,c
M. Pinamonti,164a,164cA. Pinder,118J. L. Pinfold,2J. Ping,32cB. Pinto,124a,cO. Pirotte,29C. Pizio,89a,89b R. Placakyte,41M. Plamondon,169W. G. Plano,82M.-A. Pleier,24A. V. Pleskach,128A. Poblaguev,24S. Poddar,58a F. Podlyski,33L. Poggioli,115T. Poghosyan,20M. Pohl,49F. Polci,55G. Polesello,119aA. Policicchio,138A. Polini,19a
J. Poll,75V. Polychronakos,24D. M. Pomarede,136D. Pomeroy,22K. Pomme`s,29L. Pontecorvo,132aB. G. Pope,88 G. A. Popeneciu,25aD. S. Popovic,12aA. Poppleton,29X. Portell Bueso,48R. Porter,163C. Posch,21G. E. Pospelov,99 S. Pospisil,127I. N. Potrap,99C. J. Potter,149C. T. Potter,114G. Poulard,29J. Poveda,172R. Prabhu,77P. Pralavorio,83 A. Pranko,14S. Prasad,57R. Pravahan,7S. Prell,64K. Pretzl,16L. Pribyl,29D. Price,61L. E. Price,5M. J. Price,29 P. M. Prichard,73D. Prieur,123M. Primavera,72aK. Prokofiev,108F. Prokoshin,31bS. Protopopescu,24J. Proudfoot,5
X. Prudent,43H. Przysiezniak,4S. Psoroulas,20E. Ptacek,114J. Purdham,87M. Purohit,24,xP. Puzo,115 Y. Pylypchenko,117J. Qian,87Z. Qian,83Z. Qin,41A. Quadt,54D. R. Quarrie,14W. B. Quayle,172F. Quinonez,31a M. Raas,104V. Radescu,58bB. Radics,20T. Rador,18aF. Ragusa,89a,89bG. Rahal,177A. M. Rahimi,109D. Rahm,24 S. Rajagopalan,24M. Rammensee,48M. Rammes,141M. Ramstedt,146a,146bK. Randrianarivony,28P. N. Ratoff,71 F. Rauscher,98E. Rauter,99M. Raymond,29A. L. Read,117D. M. Rebuzzi,119a,119bA. Redelbach,173G. Redlinger,24
R. Reece,120K. Reeves,40A. Reichold,105E. Reinherz-Aronis,153A. Reinsch,114I. Reisinger,42D. Reljic,12a C. Rembser,29Z. L. Ren,151A. Renaud,115P. Renkel,39B. Rensch,35M. Rescigno,132aS. Resconi,89aB. Resende,136 P. Reznicek,98R. Rezvani,158A. Richards,77R. Richter,99E. Richter-Was,38,zM. Ridel,78S. Rieke,81M. Rijpstra,105 M. Rijssenbeek,148A. Rimoldi,119a,119bL. Rinaldi,19aR. R. Rios,39I. Riu,11G. Rivoltella,89a,89bF. Rizatdinova,112 E. Rizvi,75S. H. Robertson,85,jA. Robichaud-Veronneau,49D. Robinson,27J. E. M. Robinson,77M. Robinson,114
A. Robson,53J. G. Rocha de Lima,106C. Roda,122a,122bD. Roda Dos Santos,29S. Rodier,80D. Rodriguez,162 Y. Rodriguez Garcia,15A. Roe,54S. Roe,29O. Røhne,117V. Rojo,1S. Rolli,161A. Romaniouk,96V. M. Romanov,65
G. Romeo,26D. Romero Maltrana,31aL. Roos,78E. Ros,167S. Rosati,132a,132bK. Rosbach,49M. Rose,76 G. A. Rosenbaum,158E. I. Rosenberg,64P. L. Rosendahl,13L. Rosselet,49V. Rossetti,11E. Rossi,102a,102b L. P. Rossi,50aL. Rossi,89a,89bM. Rotaru,25aI. Roth,171J. Rothberg,138D. Rousseau,115C. R. Royon,136 A. Rozanov,83Y. Rozen,152X. Ruan,115I. Rubinskiy,41B. Ruckert,98N. Ruckstuhl,105V. I. Rud,97G. Rudolph,62 F. Ru¨hr,6F. Ruggieri,134a,134bA. Ruiz-Martinez,64E. Rulikowska-Zarebska,37V. Rumiantsev,91,aL. Rumyantsev,65
K. Runge,48O. Runolfsson,20Z. Rurikova,48N. A. Rusakovich,65D. R. Rust,61J. P. Rutherfoord,6C. Ruwiedel,14 P. Ruzicka,125Y. F. Ryabov,121V. Ryadovikov,128P. Ryan,88M. Rybar,126G. Rybkin,115N. C. Ryder,118S. Rzaeva,10
A. F. Saavedra,150I. Sadeh,153H. F-W. Sadrozinski,137R. Sadykov,65F. Safai Tehrani,132a,132bH. Sakamoto,155 G. Salamanna,105A. Salamon,133aM. Saleem,111D. Salihagic,99A. Salnikov,143J. Salt,167
B. M. Salvachua Ferrando,5D. Salvatore,36a,36bF. Salvatore,149A. Salvucci,104A. Salzburger,29D. Sampsonidis,154 B. H. Samset,117H. Sandaker,13H. G. Sander,81M. P. Sanders,98M. Sandhoff,174P. Sandhu,158T. Sandoval,27
R. Sandstroem,105S. Sandvoss,174D. P. C. Sankey,129A. Sansoni,47C. Santamarina Rios,85C. Santoni,33 R. Santonico,133a,133bH. Santos,124aJ. G. Saraiva,124a,cT. Sarangi,172E. Sarkisyan-Grinbaum,7F. Sarri,122a,122b
G. Sartisohn,174O. Sasaki,66T. Sasaki,66N. Sasao,68I. Satsounkevitch,90G. Sauvage,4J. B. Sauvan,115 P. Savard,158,eV. Savinov,123D. O. Savu,29P. Savva,9L. Sawyer,24,lD. H. Saxon,53L. P. Says,33C. Sbarra,19a,19b A. Sbrizzi,19a,19bO. Scallon,93D. A. Scannicchio,163J. Schaarschmidt,115P. Schacht,99U. Scha¨fer,81S. Schaepe,20
S. Schaetzel,58bA. C. Schaffer,115D. Schaile,98R. D. Schamberger,148A. G. Schamov,107V. Scharf,58a V. A. Schegelsky,121D. Scheirich,87M. I. Scherzer,14C. Schiavi,50a,50bJ. Schieck,98M. Schioppa,36a,36b S. Schlenker,29J. L. Schlereth,5E. Schmidt,48M. P. Schmidt,175,aK. Schmieden,20C. Schmitt,81S. Schmitt,58b
M. Schmitz,20A. Scho¨ning,58bM. Schott,29D. Schouten,142J. Schovancova,125M. Schram,85C. Schroeder,81 N. Schroer,58cS. Schuh,29G. Schuler,29J. Schultes,174H.-C. Schultz-Coulon,58aH. Schulz,15J. W. Schumacher,20 M. Schumacher,48B. A. Schumm,137Ph. Schune,136C. Schwanenberger,82A. Schwartzman,143Ph. Schwemling,78
R. Schwienhorst,88R. Schwierz,43J. Schwindling,136W. G. Scott,129J. Searcy,114E. Sedykh,121E. Segura,11 S. C. Seidel,103A. Seiden,137F. Seifert,43J. M. Seixas,23aG. Sekhniaidze,102aD. M. Seliverstov,121B. Sellden,146a
G. Sellers,73M. Seman,144bN. Semprini-Cesari,19a,19bC. Serfon,98L. Serin,115R. Seuster,99H. Severini,111 M. E. Sevior,86A. Sfyrla,29E. Shabalina,54M. Shamim,114L. Y. Shan,32aJ. T. Shank,21Q. T. Shao,86M. Shapiro,14 P. B. Shatalov,95L. Shaver,6C. Shaw,53K. Shaw,164a,164cD. Sherman,175P. Sherwood,77A. Shibata,108S. Shimizu,29
M. Shimojima,100T. Shin,56A. Shmeleva,94M. J. Shochet,30D. Short,118M. A. Shupe,6P. Sicho,125 A. Sidoti,132a,132bA. Siebel,174F. Siegert,48J. Siegrist,14Dj. Sijacki,12aO. Silbert,171J. Silva,124a,cY. Silver,153
D. Silverstein,143S. B. Silverstein,146aV. Simak,127O. Simard,136Lj. Simic,12aS. Simion,115B. Simmons,77 M. Simonyan,35P. Sinervo,158N. B. Sinev,114V. Sipica,141G. Siragusa,81A. N. Sisakyan,65S. Yu. Sivoklokov,97
J. Sjo¨lin,146a,146bT. B. Sjursen,13L. A. Skinnari,14K. Skovpen,107P. Skubic,111N. Skvorodnev,22M. Slater,17 T. Slavicek,127K. Sliwa,161T. J. Sloan,71J. Sloper,29V. Smakhtin,171S. Yu. Smirnov,96L. N. Smirnova,97 O. Smirnova,79B. C. Smith,57D. Smith,143K. M. Smith,53M. Smizanska,71K. Smolek,127A. A. Snesarev,94 S. W. Snow,82J. Snow,111J. Snuverink,105S. Snyder,24M. Soares,124aR. Sobie,169,jJ. Sodomka,127A. Soffer,153
C. A. Solans,167M. Solar,127J. Solc,127E. Soldatov,96U. Soldevila,167E. Solfaroli Camillocci,132a,132b A. A. Solodkov,128O. V. Solovyanov,128J. Sondericker,24N. Soni,2V. Sopko,127B. Sopko,127M. Sorbi,89a,89b
M. Sosebee,7A. Soukharev,107S. Spagnolo,72a,72bF. Spano`,34R. Spighi,19aG. Spigo,29F. Spila,132a,132b E. Spiriti,134aR. Spiwoks,29M. Spousta,126T. Spreitzer,158B. Spurlock,7R. D. St. Denis,53T. Stahl,141
J. Stahlman,120R. Stamen,58aE. Stanecka,29R. W. Stanek,5C. Stanescu,134aS. Stapnes,117E. A. Starchenko,128 J. Stark,55P. Staroba,125P. Starovoitov,91A. Staude,98P. Stavina,144aG. Stavropoulos,14G. Steele,53P. Steinbach,43
P. Steinberg,24I. Stekl,127B. Stelzer,142H. J. Stelzer,41O. Stelzer-Chilton,159aH. Stenzel,52K. Stevenson,75 G. A. Stewart,53J. A. Stillings,20T. Stockmanns,20M. C. Stockton,29K. Stoerig,48G. Stoicea,25aS. Stonjek,99
P. Strachota,126A. R. Stradling,7A. Straessner,43J. Strandberg,147S. Strandberg,146a,146bA. Strandlie,117 M. Strang,109E. Strauss,143M. Strauss,111P. Strizenec,144bR. Stro¨hmer,173D. M. Strom,114J. A. Strong,76,a R. Stroynowski,39J. Strube,129B. Stugu,13I. Stumer,24,aJ. Stupak,148P. Sturm,174D. A. Soh,151,qD. Su,143 HS. Subramania,2A. Succurro,11Y. Sugaya,116T. Sugimoto,101C. Suhr,106K. Suita,67M. Suk,126V. V. Sulin,94
S. Sultansoy,3dT. Sumida,29X. Sun,55J. E. Sundermann,48K. Suruliz,164a,164bS. Sushkov,11G. Susinno,36a,36b M. R. Sutton,139Y. Suzuki,66M. Svatos,125Yu. M. Sviridov,128S. Swedish,168I. Sykora,144aT. Sykora,126 B. Szeless,29J. Sa´nchez,167D. Ta,105K. Tackmann,41A. Taffard,163R. Tafirout,159aA. Taga,117N. Taiblum,153
Y. Takahashi,101H. Takai,24R. Takashima,69H. Takeda,67T. Takeshita,140M. Talby,83A. Talyshev,107 M. C. Tamsett,24J. Tanaka,155R. Tanaka,115S. Tanaka,131S. Tanaka,66Y. Tanaka,100K. Tani,67N. Tannoury,83 G. P. Tappern,29S. Tapprogge,81D. Tardif,158S. Tarem,152F. Tarrade,24G. F. Tartarelli,89aP. Tas,126M. Tasevsky,125
E. Tassi,36a,36bM. Tatarkhanov,14C. Taylor,77F. E. Taylor,92G. N. Taylor,86W. Taylor,159b
M. Teixeira Dias Castanheira,75P. Teixeira-Dias,76K. K. Temming,48H. Ten Kate,29P. K. Teng,151S. Terada,66 K. Terashi,155J. Terron,80M. Terwort,41,oM. Testa,47R. J. Teuscher,158,jJ. Thadome,174J. Therhaag,20 T. Theveneaux-Pelzer,78M. Thioye,175S. Thoma,48J. P. Thomas,17E. N. Thompson,84P. D. Thompson,17 P. D. Thompson,158A. S. Thompson,53E. Thomson,120M. Thomson,27R. P. Thun,87T. Tic,125V. O. Tikhomirov,94
Y. A. Tikhonov,107C. J. W. P. Timmermans,104P. Tipton,175F. J. Tique Aires Viegas,29S. Tisserant,83J. Tobias,48 B. Toczek,37T. Todorov,4S. Todorova-Nova,161B. Toggerson,163J. Tojo,66S. Toka´r,144aK. Tokunaga,67 K. Tokushuku,66K. Tollefson,88M. Tomoto,101L. Tompkins,14K. Toms,103G. Tong,32aA. Tonoyan,13C. Topfel,16
N. D. Topilin,65I. Torchiani,29E. Torrence,114E. Torro´ Pastor,167J. Toth,83,yF. Touchard,83D. R. Tovey,139 D. Traynor,75T. Trefzger,173J. Treis,20L. Tremblet,29A. Tricoli,29I. M. Trigger,159aS. Trincaz-Duvoid,78
T. N. Trinh,78M. F. Tripiana,70N. Triplett,64W. Trischuk,158A. Trivedi,24,xB. Trocme´,55C. Troncon,89a M. Trottier-McDonald,142A. Trzupek,38C. Tsarouchas,29J. C-L. Tseng,118M. Tsiakiris,105P. V. Tsiareshka,90 D. Tsionou,4G. Tsipolitis,9V. Tsiskaridze,48E. G. Tskhadadze,51I. I. Tsukerman,95V. Tsulaia,123J.-W. Tsung,20 S. Tsuno,66D. Tsybychev,148A. Tua,139J. M. Tuggle,30M. Turala,38D. Turecek,127I. Turk Cakir,3eE. Turlay,105 R. Turra,89a,89bP. M. Tuts,34A. Tykhonov,74M. Tylmad,146a,146bM. Tyndel,129H. Tyrvainen,29G. Tzanakos,8 K. Uchida,20I. Ueda,155R. Ueno,28M. Ugland,13M. Uhlenbrock,20M. Uhrmacher,54F. Ukegawa,160G. Unal,29 D. G. Underwood,5A. Undrus,24G. Unel,163Y. Unno,66D. Urbaniec,34E. Urkovsky,153P. Urrejola,31aG. Usai,7
M. Uslenghi,119a,119bL. Vacavant,83V. Vacek,127B. Vachon,85S. Vahsen,14J. Valenta,125P. Valente,132a S. Valentinetti,19a,19bS. Valkar,126E. Valladolid Gallego,167S. Vallecorsa,152J. A. Valls Ferrer,167
H. van der Graaf,105E. van der Kraaij,105R. Van Der Leeuw,105E. van der Poel,105D. van der Ster,29B. Van Eijk,105 N. van Eldik,84P. van Gemmeren,5Z. van Kesteren,105I. van Vulpen,105W. Vandelli,29G. Vandoni,29 A. Vaniachine,5P. Vankov,41F. Vannucci,78F. Varela Rodriguez,29R. Vari,132aE. W. Varnes,6D. Varouchas,14 A. Vartapetian,7K. E. Varvell,150V. I. Vassilakopoulos,56F. Vazeille,33G. Vegni,89a,89bJ. J. Veillet,115C. Vellidis,8
F. Veloso,124aR. Veness,29S. Veneziano,132aA. Ventura,72a,72bD. Ventura,138M. Venturi,48N. Venturi,16 V. Vercesi,119aM. Verducci,138W. Verkerke,105J. C. Vermeulen,105A. Vest,43M. C. Vetterli,142,eI. Vichou,165
T. Vickey,145b,aaG. H. A. Viehhauser,118S. Viel,168M. Villa,19a,19bM. Villaplana Perez,167E. Vilucchi,47 M. G. Vincter,28E. Vinek,29V. B. Vinogradov,65M. Virchaux,136,aS. Viret,33J. Virzi,14A. Vitale,19a,19bO. Vitells,171
M. Viti,41I. Vivarelli,48F. Vives Vaque,11S. Vlachos,9M. Vlasak,127N. Vlasov,20A. Vogel,20P. Vokac,127 G. Volpi,47M. Volpi,11G. Volpini,89aH. von der Schmitt,99J. von Loeben,99H. von Radziewski,48E. von Toerne,20 V. Vorobel,126A. P. Vorobiev,128V. Vorwerk,11M. Vos,167R. Voss,29T. T. Voss,174J. H. Vossebeld,73N. Vranjes,12a
M. Vranjes Milosavljevic,12aV. Vrba,125M. Vreeswijk,105T. Vu Anh,81R. Vuillermet,29I. Vukotic,115 W. Wagner,174P. Wagner,120H. Wahlen,174J. Wakabayashi,101J. Walbersloh,42S. Walch,87J. Walder,71R. Walker,98
W. Walkowiak,141R. Wall,175P. Waller,73C. Wang,44H. Wang,172H. Wang,32b,bbJ. Wang,151J. Wang,32d J. C. Wang,138R. Wang,103S. M. Wang,151A. Warburton,85C. P. Ward,27M. Warsinsky,48P. M. Watkins,17 A. T. Watson,17M. F. Watson,17G. Watts,138S. Watts,82A. T. Waugh,150B. M. Waugh,77J. Weber,42M. Weber,129
M. S. Weber,16P. Weber,54A. R. Weidberg,118P. Weigell,99J. Weingarten,54C. Weiser,48H. Wellenstein,22 P. S. Wells,29M. Wen,47T. Wenaus,24S. Wendler,123Z. Weng,151,qT. Wengler,29S. Wenig,29N. Wermes,20
M. Werner,48P. Werner,29M. Werth,163M. Wessels,58aC. Weydert,55K. Whalen,28S. J. Wheeler-Ellis,163 S. P. Whitaker,21A. White,7M. J. White,86S. White,24S. R. Whitehead,118D. Whiteson,163D. Whittington,61 F. Wicek,115D. Wicke,174F. J. Wickens,129W. Wiedenmann,172M. Wielers,129P. Wienemann,20L. A. M. Wiik,48
P. A. Wijeratne,77A. Wildauer,167M. A. Wildt,41,oI. Wilhelm,126H. G. Wilkens,29J. Z. Will,98E. Williams,34 H. H. Williams,120W. Willis,34S. Willocq,84J. A. Wilson,17M. G. Wilson,143A. Wilson,87I. Wingerter-Seez,4 S. Winkelmann,48F. Winklmeier,29M. Wittgen,143M. W. Wolter,38H. Wolters,124a,hG. Wooden,118B. K. Wosiek,38
J. Wotschack,29M. J. Woudstra,84K. Wraight,53C. Wright,53B. Wrona,73S. L. Wu,172X. Wu,49Y. Wu,32b,cc E. Wulf,34R. Wunstorf,42B. M. Wynne,45L. Xaplanteris,9S. Xella,35S. Xie,48Y. Xie,32aC. Xu,32b,ddD. Xu,139
G. Xu,32aB. Yabsley,150M. Yamada,66A. Yamamoto,66K. Yamamoto,64S. Yamamoto,155T. Yamamura,155 J. Yamaoka,44T. Yamazaki,155Y. Yamazaki,67Z. Yan,21H. Yang,87U. K. Yang,82Y. Yang,61Y. Yang,32a Z. Yang,146a,146bS. Yanush,91W-M. Yao,14Y. Yao,14Y. Yasu,66G. V. Ybeles Smit,130J. Ye,39S. Ye,24M. Yilmaz,3c R. Yoosoofmiya,123K. Yorita,170R. Yoshida,5C. Young,143S. Youssef,21D. Yu,24J. Yu,7J. Yu,32c,ddL. Yuan,32a,ee A. Yurkewicz,148V. G. Zaets,128R. Zaidan,63A. M. Zaitsev,128Z. Zajacova,29Yo. K. Zalite,121L. Zanello,132a,132b P. Zarzhitsky,39A. Zaytsev,107C. Zeitnitz,174M. Zeller,175A. Zemla,38C. Zendler,20A. V. Zenin,128O. Zenin,128
T. Zˇ enisˇ,144aZ. Zenonos,122a,122bS. Zenz,14D. Zerwas,115G. Zevi della Porta,57Z. Zhan,32dD. Zhang,32b,bb H. Zhang,88J. Zhang,5X. Zhang,32dZ. Zhang,115L. Zhao,108T. Zhao,138Z. Zhao,32bA. Zhemchugov,65S. Zheng,32a J. Zhong,151,ffB. Zhou,87N. Zhou,163Y. Zhou,151C. G. Zhu,32dH. Zhu,41Y. Zhu,172X. Zhuang,98V. Zhuravlov,99
D. Zieminska,61R. Zimmermann,20S. Zimmermann,20S. Zimmermann,48M. Ziolkowski,141R. Zitoun,4 L. Zˇ ivkovic´,34V. V. Zmouchko,128,aG. Zobernig,172A. Zoccoli,19a,19bY. Zolnierowski,4A. Zsenei,29
M. zur Nedden,15V. Zutshi,106and L. Zwalinski29 (ATLAS Collaboration)
1University at Albany, Albany, New York, USA
2Department of Physics, University of Alberta, Edmonton AB, Canada 3aDepartment of Physics, Ankara University, Ankara, Turkey 3bDepartment of Physics, Dumlupinar University, Kutahya, Turkey
3cDepartment of Physics, Gazi University, Ankara, Turkey
3dDivision of Physics, TOBB University of Economics and Technology, Ankara, Turkey 3e
Turkish Atomic Energy Authority, Ankara, Turkey
4LAPP, CNRS/IN2P3 and Universite´ de Savoie, Annecy-le-Vieux, France 5High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois, USA
6Department of Physics, University of Arizona, Tucson Arizona, USA 7Department of Physics, The University of Texas at Arlington, Arlington Texas, USA
8Physics Department, University of Athens, Athens, Greece
9Physics Department, National Technical University of Athens, Zografou, Greece 10Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan
11Institut de Fı´sica d’Altes Energies and Universitat Auto`noma de Barcelona and ICREA, Barcelona, Spain 12a
Institute of Physics, University of Belgrade, Belgrade, Serbia
12bVinca Institute of Nuclear Sciences, Belgrade, Serbia
13Department for Physics and Technology, University of Bergen, Bergen, Norway
14Physics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley California, USA 15Department of Physics, Humboldt University, Berlin, Germany
16Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland 17School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
18aDepartment of Physics, Bogazici University, Istanbul, Turkey 18bDivision of Physics, Dogus University, Istanbul, Turkey
18cDepartment of Physics Engineering, Gaziantep University, Gaziantep, Turkey 18dDepartment of Physics, Istanbul Technical University, Istanbul, Turkey
19aINFN Sezione di Bologna, Italy
19bDipartimento di Fisica, Universita` di Bologna, Bologna, Italy 20Physikalisches Institut, University of Bonn, Bonn, Germany 21Department of Physics, Boston University, Boston, Massachusetts, USA 22Department of Physics, Brandeis University, Waltham, Massachusetts, USA 23a
Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil
23bInstituto de Fisica, Universidade de Sao Paulo, Sao Paulo, Brazil
