Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton
Collisions at ffiffiffis
p
¼ 7 TeV Using the ATLAS Detector
G. Aad et al.* (ATLAS Collaboration)
(Received 24 July 2013; published 4 December 2013)
This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using4:7 fb1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider atpffiffiffis¼ 7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of ‘P, the product of the leptonic spin-analyzing power and the top
quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, ‘PCPC¼ 0:035
0:014ðstatÞ 0:037ðsystÞ and ‘PCPV¼ 0:020 0:016ðstatÞþ0:0130:017ðsystÞ, are in good agreement with the
standard model prediction of negligible top quark polarization.
DOI:10.1103/PhysRevLett.111.232002 PACS numbers: 14.65.Ha, 12.38.Qk
The short lifetime of the top quark [1–5] implies that it decays before hadronization takes place, allowing its spin state to be studied using the angular distributions of its decay products. In the standard model (SM), parity conservation in the strong production of top-antitop quark pairs (tt) in proton-proton (pp) collisions implies zero longitudinal polarization of the quarks. A negligible polarization (0.003) is generated by the weak interaction [6]. Physics beyond the SM can induce top quark polar-ization. For example, models that predict the top quark forward-backward production asymmetry to be larger than the SM prediction, as seen by the Tevatron experi-ments D0 [7,8] and CDF [9], can generate nonzero polarization of top quarks [10–12]. A first study of polarization in tt events has been performed by the D0 Collaboration [8], showing good agreement between the SM prediction and data.
In this Letter, measurements are presented of the polarization of the top quark in inclusive tt production in single charged lepton (tt ! ‘q qb b) and dilepton (tt ! ‘þ‘b b) events. The double differential distribu-tion in polar angles, , of two of the final-state decay products, with respect to a given quantization axis, is given by [13]
1
d d cos1d cos2
¼14ð1 þ 1P1cos1þ 2P2cos2 C cos1cos2Þ;
(1)
where 1 (2) is the angular distribution of the decay
daughter particle of the top (antitop) quark. Here, C rep-resents the tt spin correlation, P1(P2) represents the degree
of polarization of the top (antitop) quark along the chosen quantization axis, and iis the spin-analyzing power of the
final-state object [14,15], which is a measure of the sensi-tivity of the daughter particle to the spin state of the parent. At leading order, charged leptons and down-type quarks from W-boson decays are predicted to have the largest sensitivity to the spin state of the top quark with a spin-analyzing power of ¼ 1. The helicity basis is used, in which the momentum direction of the top quark in the tt center-of-mass frame is chosen as the quantization axis. Thecos‘ distributions of the charged leptons are used as observables to extract a measurement of ‘P.
The analysis is based on the full 2011 data set of pp collision events, collected at a center-of-mass energy of 7 TeV by the ATLAS detector [16], corresponding to an integrated luminosity of 4:66 0:08 fb1 [17] after data quality requirements.
ATLAS includes an inner tracking detector, covering a pseudorapidity [18] range jj < 2:5, surrounded by a superconducting solenoid providing a 2 T magnetic field. A liquid argon (LAr) electromagnetic sampling calorimeter (jj < 3:2), an iron-scintillator tile hadronic calorimeter (jj < 1:7), a LAr hadronic calorimeter (1:4 < jj < 3:2), and a LAr forward calorimeter (3:1 < jj < 4:9) provide the energy measurements. The muon spectrometer consists of tracking chambers covering jj < 2:7, and trigger chambers covering jj < 2:4, in a toroidal magnetic field. Events considered in this analysis are required to have one high-transverse-momentum (pT) electron or muon that passes
require-ments of the three-level trigger system.
Both data-driven techniques and Monte Carlo (MC) simulations are used to estimate the sample composition of the data. For each MC sample, generated events are
*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.
processed through a GEANT4 [19] simulation of the full ATLAS detector [20], and the same reconstruction and analysis software is used for both the data and the MC events. Signal tt events are simulated by the next-to-leading-order (NLO) generator MC@NLO 3.41 [21] with the NLO parton distribution function (PDF) set CT10 [22], assuming a top quark mass of 172.5 GeV. Parton showering is modeled withHERWIG6.510 [23], andJIMMY 4.31 [24] is used for the underlying event. A tt production cross section of167þ1718 pb is used, calculated at approxi-mate next-to-next-to-leading order (NNLO) in QCD using HATHOR 1.2 [25]. Backgrounds are simulated using the MC@NLO, ACERMC [26], ALPGEN [27], and HERWIG generators, as detailed in Ref. [28]. Each simulated signal or background event is overlaid with additional pp collisions. The events are given a weight such that the distribution of the average number of events per beam crossing agrees with data. For each sample the cross section is rescaled to the most up-to-date theoretical expectations, as described in Ref. [29].
The data sample is enriched in tt events by applying several selection criteria based on the tt event topology. The selected tt events consist of jets, isolated leptons, and missing transverse momentum from the undetected neutri-nos. Jets are reconstructed from clustered energy deposits in the calorimeters using the anti-ktalgorithm [30] with a
radius parameter R ¼ 0:4. Their energies are corrected to correspond on average to the total energy of the stable particles emitted towards the jet using energy- and -dependent correction factors derived from simulation, and a residual correction derived from in situ measure-ments [31,32]. They are required to have pT> 25 GeV and
jj < 2:5. Furthermore, at least 75% of the scalar sum of the pTof all the tracks associated with each jet must belong
to tracks originating from the primary vertex, which is defined as the vertex with the highest sum of the squared pTvalues of the associated tracks in the event. Jets
origi-nating from b quarks are selected using a neural network algorithm that combines information about the impact parameter significance of tracks with information about explicitly reconstructed secondary vertices and other var-iables. At the chosen working point, the algorithm identi-fies (‘‘b tags’’) simulated b jets from top quark decays with 70% efficiency and a rejection factor of about 140 for light partons [33–35]. Reconstructed electrons must have pT>
25 GeV and be associated with a calorimeter cluster in the rangejclj < 2:47, excluding the transition between calo-rimeter sections,1:37 < jclj < 1:52. Selected muons are required to fulfilljj < 2:5 and pT> 20 GeV. Each lepton is required to pass quality criteria, to be compatible with being produced at the primary vertex by having a longitu-dinal impact parameter smaller than 2 mm, and to be isolated from other calorimeter energy deposits and tracks [36]. The EmissT is calculated [37] as the magnitude of the negative of the vectorial sum of all energy deposits in the
calorimeters, and then corrected for the momenta of the reconstructed muons.
The details of the final event selection depend on the W decay channels. This measurement uses five different channels, containing either one or two electrons or muons in the final state, including the ones coming from decays. The requirements for the single-lepton channels (‘ þ jets) include (i) exactly one electron or muon; (ii) at least four jets, at least one of which is b tagged; (iii) EmissT > 30 GeV for the electron channel and EmissT >
20 GeV for the muon channel; and (iv) the transverse mass of the W boson to be greater than 30 GeV for the electron channel, while mTþ EmissT > 60 GeV is required
for the muon channel. The transverse mass is computed from the lepton pTand angle (p‘T, ‘) and the direction
of the EmissT as mT¼
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 2p‘
TEmissT ½1 cosð‘ ðEmissT ÞÞ
q
. The selection of the dilepton channels (ee, e, ) requires (i) exactly two oppositely charged electrons or muons; (ii) at least two jets; (iii) a dilepton invariant mass larger than 15 GeV for all the channels, and more than 10 GeV away from the Z boson mass for the ee and channels; (iv) EmissT > 60 GeV for the ee and channels;
and (v) the scalar sum of the pTof all selected leptons and
jets to be larger than 130 GeV for the e channel. The major backgrounds are due to vector boson produc-tion with addiproduc-tional jets, single top quark producproduc-tion, and to misidentified leptons. Their contributions are estimated using data-driven methods and MC simulation. In particu-lar, the normalization of the dominant background in the ‘ þ jets channels, W þ jets production, is estimated using a measurement of the lepton charge asymmetry in data [38], while the shape of the distribution ofcos‘ is taken from simulation. In the ee () channel, the normalization of the Z= þ jets background with Z= decaying into ee () is determined from data. A Z= þ jets enriched control region is defined, where a correction factor for the simulation normalization is derived as a function of the EmissT in the event, and applied to the signal region in
order to account for possible EmissT mismodeling.
The contributions of nonprompt leptons from semilep-tonic hadron decays and of jets misidentified as leptons (fakes) are determined from data using matrix methods [29,39]. For ‘ þ jets channels this contribution comes primarily from multijet events, while for dilepton channels it originates primarily from W þ jets events where one charged lepton comes from W decay and the other lepton is a nonprompt or fake lepton.
After selection, the expected yields for signal and back-ground compared to data are shown in TableI.
The selected events are reconstructed under the tt event hypothesis: jets are associated with particular quarks, and the longitudinal momenta of the neutrinos in the event are determined. From the fully reconstructed decay chain we calculate the momentum of the top quark in the tt frame and from itcos‘.
In the ‘ þ jets channels, a kinematic likelihood fit is performed. The likelihood for the event to correspond to a tt decay topology is calculated for each possible assign-ment of four jets selected from the up to five jets of highest pT in the event, to the two b quark jets and the two jets
from the W boson decay [40]. The energies of the jets and the charged lepton, as well as the EmissT , are allowed to vary
within their respective resolutions to best meet the W boson and top quark mass constraints to form the kinematic likelihood. For each assignment, the combined probability is calculated as the product of the maximum kinematic likelihood, the b tagging efficiencies and light-parton rejection probabilities. The highest probability assignment is chosen as the best reconstruction and used to calculate the charged leptoncos‘.
In the dilepton channels, the neutrino weighting method is used [41]. Because of the presence of two neutrinos from W boson decays, the final system is underconstrained and assumptions must be made to calculate all particle momenta. Making a hypothesis for the pseudorapidities of the two neutrinos (1, 2), a weight is assigned for each
permutation of jets, based on the compatibility of the total neutrino transverse momentum vector and the measured EmissT , accounting for EmissT resolution [37]. For each event,
10 000 different hypotheses for ð1; 2Þ are scanned,
drawn from the observed probability distribution in the signal MC sample. The configuration with the maximal weight is selected and used to reconstruct the values of cos‘for both charged leptons. Events for which no
physi-cal solution can be found with this method are discarded, corresponding to 15% of the selected events in the simu-lated dilepton tt sample. The assumed distributions of the neutrinos are insensitive to top quark polarization.
To extract the value of ‘P from the data, a fit using
templates for partially polarized top quarks is performed. The signal templates are obtained by reweighting the top and antitop quark decay products in the simulated tt sam-ple according to Eq. (1) using the helicity basis and setting C to the SM value of tt spin correlation, C ¼ 0:31 [6]. Two different assumptions about the top quark polarization are made to produce two template fits. In one case, the polar-ization is assumed to be induced by a charge-parity (CP)
conserving process, labeled CPC, which leads to top and antitop quarks having equal values of ‘P and therefore
the same angular distribution for the daughter particles. In the other, maximal CP violation, labeled CPV, is assumed, leading to opposite values of ‘P for the top and antitop
quarks. In this case, when a value of ‘P is quoted its sign
refers to the sign of the coefficient for positively charged leptons. The positive and negative templates used in the fit are built assuming a value of ‘P ¼ 0:3, to guarantee
that the differential decay distribution is positive for all values of cos‘ given the degree of spin correlation. The fraction, f, of the positive template component and the tt production cross section are fitted simultaneously, in order to reduce the influence of normalization uncertainties on the measured polarization. The polarization is computed as ‘P ¼ 0:6f 0:3.
For all the considered channels, a template fit is per-formed with a binned maximum likelihood method on the positive lepton and on the negative lepton distributions. Channels are combined by multiplying their respective likelihood functions. The fitting method is unbiased, which was shown using pseudoexperiments.
For each source of systematic uncertainty, new tem-plates corresponding to the respective 1 standard deviation up and down variation are considered. When an uncertainty is evaluated as the difference between two points, it is symmetrized around the central value. The mean of the distribution of the respective differences between the cen-tral fit values and the up and down results from 1000 pseudodata sets is taken as the systematic uncertainty on that source. Systematic uncertainties arising from the same source are treated as being correlated between the different lepton charge and flavor samples.
Detector systematic uncertainties, related to the deter-mination of the energy or momentum scales, resolutions, and efficiencies for jets, electrons, and muons, as well as the EmissT , are considered [32,37,42–46]. Simulated samples
are corrected in order to match the reconstructed object properties observed in data, and the correction factors are varied depending on the uncertainties of their values, in order to estimate the uncertainty on the final measurement. The largest uncertainty in this measurement comes from the jet energy scale.
Systematic uncertainties from the modeling of tt pro-duction are accounted for using alternative signal tem-plates. These templates are produced by varying the MC event generator, initial- and final- state radiation, color reconnection, fragmentation modeling, and the PDF sets, as detailed in Ref. [47]. The estimation of the uncertainty due to the top quark mass is performed by repeating the fitting procedure using seven samples with different mass settings in the simulation, and interpolating the change in the parameter f corresponding to a variation of the top quark mass of 1:4 GeV [48] around the nominal value. Because an assumption on the degree of spin correlation is
TABLE I. Expected signal and background rounded yields compared to data for each of the five lepton flavor channels considered. The approximate NNLO SM prediction [25] is assumed for tt production, and the total systematic and statistical uncertainties are reported.
Source e þ jets þ jets ee e
tt 16 200 26 500 570 4400 1660
Background 5100 9400 110 700 320
Total 21 300 35 900 690 5000 1980
Uncertainty 1300 1700 80 500 180
made when constructing the template, an additional uncer-tainty is applied based on the difference in the parton-level spin correlation in simulated tt events between the MC@NLOandPOWHEG[49] generators.
For the W þ jets background in the ‘ þ jets final state, the overall normalization is varied according to the residual uncertainty after the rescaling based on the measured charge asymmetry [38]. In addition, the W þ jets template is varied in shape and normalization by reweighting events according to both the uncertainty in the associated heavy quark production flavor fractions and the parameters of the simulation of extra jets [39]. For the estimate of the sys-tematic uncertainty due to events with nonprompt or fake leptons, the templates are varied according to the uncer-tainties in the matrix method inputs [29,39]. The MC statistical uncertainty is taken into account by performing pseudoexperiments, where the bin content of each template is varied independently according to the uncertainty. TableIIsummarizes the sources of systematic uncertainty and their effect on ‘P for the combined fit. The two
largest uncertainties come from jet reconstruction and MC modeling, both affecting the shape of the cos‘ distribution. For sources of systematic uncertainty that do not depend on the lepton charge in the event, the uncer-tainty in the CP violating scenario is greatly reduced. These uncertainties push the fit parameters in opposite directions for the samples with different lepton charge, leading to a smaller total uncertainty in the combination.
The results of the fit to the data in the single-lepton and dilepton channels are summarized in Table III. Figure 1 shows the fitted observable in the single-lepton and dilep-ton final states with the CP conserving hypothesis, and Fig. 2 shows the same observable in the CP violating hypothesis. The deviation from the expected linear behav-ior of the cos‘ distributions is primarily a result of the detector acceptance.
The combined results are
‘PCPC¼ 0:035 0:014ðstatÞ 0:037ðsystÞ (2)
in the CP conserving scenario, and
‘PCPV¼ 0:020 0:016ðstatÞþ0:0130:017ðsystÞ (3)
in the CP violating scenario. The polarization in both scenarios agrees with the SM prediction of negligible polarization. The fitted ttis in good agreement with the
SM prediction as obtained from NNLO QCD calculations [50,51].
In conclusion, the first measurement of top quark polar-ization in tt events has been performed for two different scenarios with 4:7 fb1of proton-proton collision data at 7 TeV center-of-mass energy with the ATLAS detector at
TABLE II. Summary of the systematic uncertainties on ‘P
for the CP conserving and CP violating fits in the combined channels. The systematic uncertainties have been added in quadrature to obtain the total uncertainty.
Source ‘PCPC ‘PCPV Jet reconstruction þ0:031 0:031 þ0:009 0:005 Lepton reconstruction þ0:006 0:007 þ0:002 0:001 EmissT reconstruction þ0:008 0:007 þ0:004 0:001 tt modeling þ0:015 0:016 þ0:005 0:013 Background modeling þ0:011 0:010 þ0:005 0:007 Template statistics þ0:005 0:005 þ0:006 0:006 Total systematic uncertainty þ0:037 0:037 þ0:013 0:017
TABLE III. Summary of fitted ‘P in the individual channels
for the CP conserving and CP violating fits. The uncertainties quoted are first statistical and then systematic.
Channel ‘PCPC ‘PCPV ee 0:12 0:10þ0:090:12 0:04 0:12þ0:180:12 e 0:07 0:04þ0:050:06 0:00 0:04þ0:050:04 0:04 0:06þ0:070:07 0:04 0:07þ0:060:06 Dilepton 0:04 0:03þ0:050:05 0:01 0:03þ0:040:04 e þ jets 0:031 0:028þ0:0430:040 0:001 0:031þ0:0190:019 þ jets 0:033 0:021þ0:0390:039 0:036 0:023þ0:0180:017 ‘ þ jets 0:034 0:017þ0:0380:037 0:023 0:019þ0:0120:011 Combined 0:035 0:014þ0:0370:037 0:020 0:016þ0:0130:017 (a) (b)
FIG. 1 (color online). The result of the full combined fit to the data with the CP conserving polarization hypothesis in (a) the single-lepton channel and (b) the dilepton channel, adding together electrons and muons. It is compared to the polarization templates used and the SM prediction of zero polarization. Positively charged leptons are on the left, and negatively charged leptons are on the right.
the LHC. Single-lepton and dilepton final states have been analyzed and no deviation from the SM prediction of negligible polarization is observed for either the CP conserving or maximally CP violating scenario.
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 and FWF, 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; EPLANET, ERC, and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG, and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP, and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and 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 MIZSˇ, 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 acknowl-edged 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] T. Aaltonen et al. (CDF Collaboration),Phys. Rev. Lett. 105, 232003 (2010).
[2] T. Aaltonen et al. (CDF Collaboration),Phys. Rev. Lett. 102, 042001 (2009).
[3] V. M. Abazov et al. (D0 Collaboration),Phys. Rev. Lett. 106, 022001 (2011).
[4] V. M. Abazov et al. (D0 Collaboration),Phys. Rev. D 85, 091104 (2012).
[5] M. Jezˇabek and J. H. Ku¨hn, Phys. Rev. D 48, R1910 (1993); [49, 4970 (1994)].
[6] W. Bernreuther and Z.-G. Si, Phys. Lett. B 725, 115 (2013).
[7] V. M. Abazov et al. (D0 Collaboration),Phys. Rev. D 84, 112005 (2011).
[8] V. M. Abazov et al. (D0 Collaboration),Phys. Rev. D 87, 011103 (2013).
[9] T. Aaltonen et al. (CDF Collaboration),Phys. Rev. D 87, 092002 (2013).
[10] D. Krohn, T. Liu, J. Shelton, and L.-T. Wang,Phys. Rev. D 84, 074034 (2011).
[11] S. Fajfer, J. F. Kamenik, and B. Melic´, J. High Energy Phys. 08 (2012) 114.
[12] J. Aguilar-Saavedra and M. Perez-Victoria,J. Phys. Conf. Ser. 447, 012015 (2013).
[13] W. Bernreuther and Z. G. Si,Nucl. Phys. B837, 90 (2010). [14] A. Brandenburg, Z. Si, and P. Uwer,Phys. Lett. B 539, 235
(2002).
[15] G. Mahlon and S. J. Parke,Phys. Rev. D 53, 4886 (1996). [16] ATLAS Collaboration,JINST 3, S08003 (2008).
[17] ATLAS Collaboration,Eur. Phys. J. C 73, 2518 (2013). [18] ATLAS uses a right-handed coordinate system with its
origin at the nominal interaction point (IP) in the center of the detector and the z axis along the beam pipe. The x axis points from the IP to the center of the LHC ring, and the y 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 ln½tanð=2Þ. The transverse energy ET is defined as E sin, where E
is the energy associated with the calorimeter cell or energy cluster. Similarly, pTis the momentum component
transverse to the beam line.
[19] S. Agostinelli et al. (GEANT4 Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A 506, 250 (2003). [20] ATLAS Collaboration,Eur. Phys. J. C 70, 823 (2010).
(a)
(b)
FIG. 2 (color online). The result of the full combined fit to the data with the CP violating polarization hypothesis in (a) the single-lepton channel and (b) the dilepton channel, adding together electrons and muons. It is compared to the polarization templates used and the SM prediction of no polarization. Positively charged leptons are on the left, and negatively charged leptons are on the right.
[21] S. Frixione and B. R. Webber, J. High Energy Phys. 06 (2002) 029.
[22] H.-L. Lai, M. Guzzi, J. Huston, Z. Li, P. M. Nadolsky, J. Pumplin, and C.-P. Yuan,Phys. Rev. D 82, 074024 (2010). [23] G. Corcella, I. G Knowles, G. Marchesini, S. Moretti, K. Odagiri, P. Richardson, M. H. Seymour, and B. R. Webber,
J. High Energy Phys. 01 (2001) 010.
[24] J. Butterworth, J. R. Forshaw, and M. Seymour,Z. Phys. C 72, 637 (1996).
[25] M. Aliev, H. Lacker, U. Langenfeld, S. Moch, P. Uwer, and M. Wiedermann,Comput. Phys. Commun. 182, 1034 (2011).
[26] B. P. Kersevan and E. Richter-Was, Comput. Phys. Commun. 184, 919 (2013).
[27] M. L. Mangano, M. Moretti, F. Piccinini, R. Pittau, and A. D. Polosa,J. High Energy Phys. 07 (2003) 001. [28] ATLAS Collaboration,Phys. Rev. D. 88, 012004 (2013). [29] ATLAS Collaboration,Eur. Phys. J. C 71, 1577 (2011). [30] M. Cacciari, G. P. Salam, and G. Soyez,J. High Energy
Phys. 04 (2008) 063.
[31] ATLAS Collaboration,Eur. Phys. J. C 71, 1512 (2011). [32] ATLAS Collaboration, Report No.
ATLAS-CONF-2013-004 (2013) [http://cds.cern.ch/record/1509552].
[33] ATLAS Collaboration, Report No. ATLAS-CONF-2011-102 (2011) [http://cds.cern.ch/record/1369219].
[34] ATLAS Collaboration, Report No. ATLAS-CONF-2012-043 (2012) [http://cdsweb.cern.ch/record/1435197].
[35] ATLAS Collaboration, Report No. ATLAS-CONF-2012-040 (2012) [http://cdsweb.cern.ch/record/1435194]. [36] ATLAS Collaboration,Phys. Lett. B 721, 171 (2013). [37] ATLAS Collaboration, Eur. Phys. J. C 72, 1844
(2012).
[38] ATLAS Collaboration,Eur. Phys. J. C 72, 2039 (2012). [39] ATLAS Collaboration,Eur. Phys. J. C 73, 2261 (2013). [40] ATLAS Collaboration,Eur. Phys. J. C 72, 2046 (2012). [41] B. Abbott et al. (D0 Collaboration),Phys. Rev. Lett. 80,
2063 (1998).
[42] ATLAS Collaboration,Eur. Phys. J. C 73, 2304 (2013). [43] ATLAS Collaboration,Eur. Phys. J. C 73, 2306 (2013). [44] ATLAS Collaboration,Eur. Phys. J. C 72, 1909 (2012). [45] ATLAS Collaboration, Report No.
ATLAS-CONF-2011-063 (2011) [http://cds.cern.ch/record/1345743].
[46] ATLAS Collaboration, Report No. ATLAS-CONF-2011-046 (2011) [http://cds.cern.ch/record/1338575].
[47] ATLAS Collaboration, J. High Energy Phys. 01 (2013) 116.
[48] ATLAS Collaboration, Report No. ATLAS-CONF-2012-095 (2012) [http://cds.cern.ch/record/1460441].
[49] S. Frixione, P. Nason, and C. Oleari,J. High Energy Phys. 11 (2007) 070.
[50] M. Czakon, P. Fiedler, and A. Mitov,Phys. Rev. Lett. 110, 252004 (2013).
[51] M. Czakon and A. Mitov, arXiv:1112.5675 [http://www .alexandermitov.com/software].
G. Aad,48T. Abajyan,21B. Abbott,112J. Abdallah,12S. Abdel Khalek,116O. Abdinov,11R. Aben,106B. Abi,113 M. Abolins,89O. S. AbouZeid,159H. Abramowicz,154H. Abreu,137Y. Abulaiti,147a,147bB. S. Acharya,165a,165b,b
L. Adamczyk,38aD. L. Adams,25T. N. Addy,56J. Adelman,177S. Adomeit,99T. Adye,130S. Aefsky,23 T. Agatonovic-Jovin,13bJ. A. Aguilar-Saavedra,125b,cM. Agustoni,17S. P. Ahlen,22A. Ahmad,149M. Ahsan,41 G. Aielli,134a,134bT. P. A. A˚ kesson,80G. Akimoto,156A. V. Akimov,95M. A. Alam,76J. Albert,170S. Albrand,55
M. J. Alconada Verzini,70M. Aleksa,30I. N. Aleksandrov,64F. Alessandria,90aC. Alexa,26aG. Alexander,154 G. Alexandre,49T. Alexopoulos,10M. Alhroob,165a,165cM. Aliev,16G. Alimonti,90aL. Alio,84J. Alison,31 B. M. M. Allbrooke,18L. J. Allison,71P. P. Allport,73S. E. Allwood-Spiers,53J. Almond,83A. Aloisio,103a,103b R. Alon,173A. Alonso,36F. Alonso,70A. Altheimer,35B. Alvarez Gonzalez,89M. G. Alviggi,103a,103bK. Amako,65
Y. Amaral Coutinho,24aC. Amelung,23V. V. Ammosov,129,aS. P. Amor Dos Santos,125aA. Amorim,125a,d S. Amoroso,48N. Amram,154C. Anastopoulos,30L. S. Ancu,17N. Andari,30T. Andeen,35C. F. Anders,58b G. Anders,58aK. J. Anderson,31A. Andreazza,90a,90bV. Andrei,58aX. S. Anduaga,70S. Angelidakis,9P. Anger,44
A. Angerami,35F. Anghinolfi,30A. V. Anisenkov,108N. Anjos,125aA. Annovi,47A. Antonaki,9M. Antonelli,47 A. Antonov,97J. Antos,145bF. Anulli,133aM. Aoki,102L. Aperio Bella,18R. Apolle,119,eG. Arabidze,89I. Aracena,144
Y. Arai,65A. T. H. Arce,45S. Arfaoui,149J-F. Arguin,94S. Argyropoulos,42E. Arik,19a,aM. Arik,19a A. J. Armbruster,88O. Arnaez,82V. Arnal,81O. Arslan,21A. Artamonov,96G. Artoni,133a,133bS. Asai,156N. Asbah,94
S. Ask,28B. A˚ sman,147a,147bL. Asquith,6K. Assamagan,25R. Astalos,145aA. Astbury,170M. Atkinson,166 N. B. Atlay,142B. Auerbach,6E. Auge,116K. Augsten,127M. Aurousseau,146bG. Avolio,30D. Axen,169 G. Azuelos,94,fY. Azuma,156M. A. Baak,30C. Bacci,135a,135bA. M. Bach,15H. Bachacou,137K. Bachas,155 M. Backes,30M. Backhaus,21J. Backus Mayes,144E. Badescu,26aP. Bagiacchi,133a,133bP. Bagnaia,133a,133bY. Bai,33a
D. C. Bailey,159T. Bain,35J. T. Baines,130O. K. Baker,177S. Baker,77P. Balek,128F. Balli,137E. Banas,39 Sw. Banerjee,174D. Banfi,30A. Bangert,151V. Bansal,170H. S. Bansil,18L. Barak,173S. P. Baranov,95T. Barber,48
E. L. Barberio,87D. Barberis,50a,50bM. Barbero,84D. Y. Bardin,64T. Barillari,100M. Barisonzi,176T. Barklow,144 N. Barlow,28B. M. Barnett,130R. M. Barnett,15A. Baroncelli,135aG. Barone,49A. J. Barr,119F. Barreiro,81 J. Barreiro Guimara˜es da Costa,57R. Bartoldus,144A. E. Barton,71V. Bartsch,150A. Bassalat,116A. Basye,166 R. L. Bates,53L. Batkova,145aJ. R. Batley,28M. Battistin,30F. Bauer,137H. S. Bawa,144,gS. Beale,99T. Beau,79
P. H. Beauchemin,162R. Beccherle,50aP. Bechtle,21H. P. Beck,17K. Becker,176S. Becker,99M. Beckingham,139 K. H. Becks,176A. J. Beddall,19cA. Beddall,19cS. Bedikian,177V. A. Bednyakov,64C. P. Bee,84L. J. Beemster,106 T. A. Beermann,176M. Begel,25C. Belanger-Champagne,86P. J. Bell,49W. H. Bell,49G. Bella,154L. Bellagamba,20a A. Bellerive,29M. Bellomo,30A. Belloni,57O. L. Beloborodova,108,hK. Belotskiy,97O. Beltramello,30O. Benary,154
D. Benchekroun,136aK. Bendtz,147a,147bN. Benekos,166Y. Benhammou,154E. Benhar Noccioli,49 J. A. Benitez Garcia,160bD. P. Benjamin,45J. R. Bensinger,23K. Benslama,131S. Bentvelsen,106D. Berge,30 E. Bergeaas Kuutmann,16N. Berger,5F. Berghaus,170E. Berglund,106J. Beringer,15C. Bernard,22P. Bernat,77 R. Bernhard,48C. Bernius,78F. U. Bernlochner,170T. Berry,76C. Bertella,84F. Bertolucci,123a,123bM. I. Besana,90a G. J. Besjes,105O. Bessidskaia,147a,147bN. Besson,137S. Bethke,100W. Bhimji,46R. M. Bianchi,124L. Bianchini,23 M. Bianco,30O. Biebel,99S. P. Bieniek,77K. Bierwagen,54J. Biesiada,15M. Biglietti,135aJ. Bilbao De Mendizabal,49 H. Bilokon,47M. Bindi,20a,20bS. Binet,116A. Bingul,19cC. Bini,133a,133bB. Bittner,100C. W. Black,151J. E. Black,144 K. M. Black,22D. Blackburn,139R. E. Blair,6J.-B. Blanchard,137T. Blazek,145aI. Bloch,42C. Blocker,23J. Blocki,39
W. Blum,82,aU. Blumenschein,54G. J. Bobbink,106V. S. Bobrovnikov,108S. S. Bocchetta,80A. Bocci,45 C. R. Boddy,119M. Boehler,48J. Boek,176T. T. Boek,176N. Boelaert,36J. A. Bogaerts,30A. G. Bogdanchikov,108 A. Bogouch,91,aC. Bohm,147aJ. Bohm,126V. Boisvert,76T. Bold,38aV. Boldea,26aN. M. Bolnet,137M. Bomben,79
M. Bona,75M. Boonekamp,137S. Bordoni,79C. Borer,17A. Borisov,129G. Borissov,71M. Borri,83S. Borroni,42 J. Bortfeldt,99V. Bortolotto,135a,135bK. Bos,106D. Boscherini,20aM. Bosman,12H. Boterenbrood,106J. Bouchami,94
J. Boudreau,124E. V. Bouhova-Thacker,71D. Boumediene,34C. Bourdarios,116N. Bousson,84S. Boutouil,136d A. Boveia,31J. Boyd,30I. R. Boyko,64I. Bozovic-Jelisavcic,13bJ. Bracinik,18P. Branchini,135aA. Brandt,8
G. Brandt,15O. Brandt,54U. Bratzler,157B. Brau,85J. E. Brau,115H. M. Braun,176,aS. F. Brazzale,165a,165c B. Brelier,159J. Bremer,30K. Brendlinger,121R. Brenner,167S. Bressler,173T. M. Bristow,46D. Britton,53 F. M. Brochu,28I. Brock,21R. Brock,89F. Broggi,90aC. Bromberg,89J. Bronner,100G. Brooijmans,35T. Brooks,76
W. K. Brooks,32bE. Brost,115G. Brown,83J. Brown,55P. A. Bruckman de Renstrom,39D. Bruncko,145b R. Bruneliere,48S. Brunet,60A. Bruni,20aG. Bruni,20aM. Bruschi,20aL. Bryngemark,80T. Buanes,14Q. Buat,55 F. Bucci,49J. Buchanan,119P. Buchholz,142R. M. Buckingham,119A. G. Buckley,46S. I. Buda,26aI. A. Budagov,64 B. Budick,109F. Buehrer,48L. Bugge,118O. Bulekov,97A. C. Bundock,73M. Bunse,43H. Burckhart,30S. Burdin,73 T. Burgess,14S. Burke,130E. Busato,34V. Bu¨scher,82P. Bussey,53C. P. Buszello,167B. Butler,57J. M. Butler,22
C. M. Buttar,53J. M. Butterworth,77W. Buttinger,28A. Buzatu,53M. Byszewski,10S. Cabrera Urba´n,168 D. Caforio,20a,20bO. Cakir,4aP. Calafiura,15G. Calderini,79P. Calfayan,99R. Calkins,107L. P. Caloba,24a
R. Caloi,133a,133bD. Calvet,34S. Calvet,34R. Camacho Toro,49P. Camarri,134a,134bD. Cameron,118 L. M. Caminada,15R. Caminal Armadans,12S. Campana,30M. Campanelli,77V. Canale,103a,103bF. Canelli,31 A. Canepa,160aJ. Cantero,81R. Cantrill,76T. Cao,40M. D. M. Capeans Garrido,30I. Caprini,26aM. Caprini,26a D. Capriotti,100M. Capua,37a,37bR. Caputo,82R. Cardarelli,134aT. Carli,30G. Carlino,103aL. Carminati,90a,90b S. Caron,105E. Carquin,32bG. D. Carrillo-Montoya,146cA. A. Carter,75J. R. Carter,28J. Carvalho,125a,iD. Casadei,77 M. P. Casado,12C. Caso,50a,50b,aE. Castaneda-Miranda,146bA. Castelli,106V. Castillo Gimenez,168N. F. Castro,125a
G. Cataldi,72aP. Catastini,57A. Catinaccio,30J. R. Catmore,30A. Cattai,30G. Cattani,134a,134bS. Caughron,89 V. Cavaliere,166D. Cavalli,90aM. Cavalli-Sforza,12V. Cavasinni,123a,123bF. Ceradini,135a,135bB. Cerio,45
A. S. Cerqueira,24bA. Cerri,15L. Cerrito,75F. Cerutti,15A. Cervelli,17S. A. Cetin,19bA. Chafaq,136a D. Chakraborty,107I. Chalupkova,128K. Chan,3P. Chang,166B. Chapleau,86J. D. Chapman,28J. W. Chapman,88
D. G. Charlton,18V. Chavda,83C. A. Chavez Barajas,30S. Cheatham,86S. Chekanov,6S. V. Chekulaev,160a G. A. Chelkov,64M. A. Chelstowska,88C. Chen,63H. Chen,25S. Chen,33cX. Chen,174Y. Chen,35Y. Cheng,31
A. Cheplakov,64R. Cherkaoui El Moursli,136eV. Chernyatin,25,aE. Cheu,7L. Chevalier,137V. Chiarella,47 G. Chiefari,103a,103bJ. T. Childers,30A. Chilingarov,71G. Chiodini,72aA. S. Chisholm,18R. T. Chislett,77 A. Chitan,26aM. V. Chizhov,64G. Choudalakis,31S. Chouridou,9B. K. B. Chow,99I. A. Christidi,77A. Christov,48 D. Chromek-Burckhart,30M. L. Chu,152J. Chudoba,126G. Ciapetti,133a,133bA. K. Ciftci,4aR. Ciftci,4aD. Cinca,62 V. Cindro,74A. Ciocio,15M. Cirilli,88P. Cirkovic,13bZ. H. Citron,173M. Citterio,90aM. Ciubancan,26aA. Clark,49 P. J. Clark,46R. N. Clarke,15J. C. Clemens,84B. Clement,55C. Clement,147a,147bY. Coadou,84M. Cobal,165a,165c
A. Coccaro,139J. Cochran,63S. Coelli,90aL. Coffey,23J. G. Cogan,144J. Coggeshall,166J. Colas,5B. Cole,35 S. Cole,107A. P. Colijn,106C. Collins-Tooth,53J. Collot,55T. Colombo,58cG. Colon,85G. Compostella,100 P. Conde Muin˜o,125aE. Coniavitis,167M. C. Conidi,12S. M. Consonni,90a,90bV. Consorti,48S. Constantinescu,26a
N. J. Cooper-Smith,76K. Copic,15T. Cornelissen,176M. Corradi,20aF. Corriveau,86,kA. Corso-Radu,164 A. Cortes-Gonzalez,12G. Cortiana,100G. Costa,90aM. J. Costa,168D. Costanzo,140D. Coˆte´,8G. Cottin,32a L. Courneyea,170G. Cowan,76B. E. Cox,83K. Cranmer,109S. Cre´pe´-Renaudin,55F. Crescioli,79M. Cristinziani,21
G. Crosetti,37a,37bC.-M. Cuciuc,26aC. Cuenca Almenar,177T. Cuhadar Donszelmann,140J. Cummings,177 M. Curatolo,47C. Cuthbert,151H. Czirr,142P. Czodrowski,44Z. Czyczula,177S. D’Auria,53M. D’Onofrio,73 A. D’Orazio,133a,133bM. J. Da Cunha Sargedas De Sousa,125aC. Da Via,83W. Dabrowski,38aA. Dafinca,119T. Dai,88
F. Dallaire,94C. Dallapiccola,85M. Dam,36D. S. Damiani,138A. C. Daniells,18V. Dao,105G. Darbo,50a G. L. Darlea,26cS. Darmora,8J. A. Dassoulas,42W. Davey,21C. David,170T. Davidek,128E. Davies,119,eM. Davies,94 O. Davignon,79A. R. Davison,77Y. Davygora,58aE. Dawe,143I. Dawson,140R. K. Daya-Ishmukhametova,23K. De,8
R. de Asmundis,103aS. De Castro,20a,20bS. De Cecco,79J. de Graat,99N. De Groot,105P. de Jong,106 C. De La Taille,116H. De la Torre,81F. De Lorenzi,63L. De Nooij,106D. De Pedis,133aA. De Salvo,133a U. De Sanctis,165a,165cA. De Santo,150J. B. De Vivie De Regie,116G. De Zorzi,133a,133bW. J. Dearnaley,71
R. Debbe,25C. Debenedetti,46B. Dechenaux,55D. V. Dedovich,64J. Degenhardt,121J. Del Peso,81 T. Del Prete,123a,123bT. Delemontex,55F. Deliot,137M. Deliyergiyev,74A. Dell’Acqua,30L. Dell’Asta,22 M. Della Pietra,103a,jD. della Volpe,103a,103bM. Delmastro,5P. A. Delsart,55C. Deluca,106S. Demers,177 M. Demichev,64A. Demilly,79B. Demirkoz,12,lS. P. Denisov,129D. Derendarz,39J. E. Derkaoui,136dF. Derue,79
P. Dervan,73K. Desch,21C. Deterre,42P. O. Deviveiros,106A. Dewhurst,130B. DeWilde,149S. Dhaliwal,106 R. Dhullipudi,78,mA. Di Ciaccio,134a,134bL. Di Ciaccio,5C. Di Donato,103a,103bA. Di Girolamo,30B. Di Girolamo,30
S. Di Luise,135a,135bA. Di Mattia,153B. Di Micco,135a,135bR. Di Nardo,47A. Di Simone,48R. Di Sipio,20a,20b M. A. Diaz,32aE. B. Diehl,88J. Dietrich,42T. A. Dietzsch,58aS. Diglio,87K. Dindar Yagci,40J. Dingfelder,21 F. Dinut,26aC. Dionisi,133a,133bP. Dita,26aS. Dita,26aF. Dittus,30F. Djama,84T. Djobava,51bM. A. B. do Vale,24c
A. Do Valle Wemans,125a,nT. K. O. Doan,5D. Dobos,30E. Dobson,77J. Dodd,35C. Doglioni,49T. Doherty,53 T. Dohmae,156Y. Doi,65,aJ. Dolejsi,128Z. Dolezal,128B. A. Dolgoshein,97,aM. Donadelli,24dJ. Donini,34J. Dopke,30
A. Doria,103aA. Dos Anjos,174A. Dotti,123a,123bM. T. Dova,70A. T. Doyle,53M. Dris,10J. Dubbert,88S. Dube,15 E. Dubreuil,34E. Duchovni,173G. Duckeck,99D. Duda,176A. Dudarev,30F. Dudziak,63L. Duflot,116M-A. Dufour,86 L. Duguid,76M. Du¨hrssen,30M. Dunford,58aH. Duran Yildiz,4aM. Du¨ren,52M. Dwuznik,38aJ. Ebke,99W. Edson,2 C. A. Edwards,76N. C. Edwards,46W. Ehrenfeld,21T. Eifert,144G. Eigen,14K. Einsweiler,15E. Eisenhandler,75
T. Ekelof,167M. El Kacimi,136cM. Ellert,167S. Elles,5F. Ellinghaus,82K. Ellis,75N. Ellis,30J. Elmsheuser,99 M. Elsing,30D. Emeliyanov,130Y. Enari,156O. C. Endner,82R. Engelmann,149A. Engl,99J. Erdmann,177 A. Ereditato,17D. Eriksson,147aG. Ernis,176J. Ernst,2M. Ernst,25J. Ernwein,137D. Errede,166S. Errede,166 E. Ertel,82M. Escalier,116H. Esch,43C. Escobar,124X. Espinal Curull,12B. Esposito,47F. Etienne,84A. I. Etienvre,137
E. Etzion,154D. Evangelakou,54H. Evans,60L. Fabbri,20a,20bC. Fabre,30G. Facini,30R. M. Fakhrutdinov,129 S. Falciano,133aY. Fang,33aM. Fanti,90a,90bA. Farbin,8A. Farilla,135aT. Farooque,159S. Farrell,164 S. M. Farrington,171P. Farthouat,30F. Fassi,168P. Fassnacht,30D. Fassouliotis,9B. Fatholahzadeh,159 A. Favareto,90a,90bL. Fayard,116P. Federic,145aO. L. Fedin,122W. Fedorko,169M. Fehling-Kaschek,48L. Feligioni,84
C. Feng,33dE. J. Feng,6H. Feng,88A. B. Fenyuk,129J. Ferencei,145bW. Fernando,6S. Ferrag,53J. Ferrando,53 V. Ferrara,42A. Ferrari,167P. Ferrari,106R. Ferrari,120aD. E. Ferreira de Lima,53A. Ferrer,168D. Ferrere,49 C. Ferretti,88A. Ferretto Parodi,50a,50bM. Fiascaris,31F. Fiedler,82A. Filipcˇicˇ,74M. Filipuzzi,42F. Filthaut,105 M. Fincke-Keeler,170K. D. Finelli,45M. C. N. Fiolhais,125a,iL. Fiorini,168A. Firan,40J. Fischer,176M. J. Fisher,110
E. A. Fitzgerald,23M. Flechl,48I. Fleck,142P. Fleischmann,175S. Fleischmann,176G. T. Fletcher,140G. Fletcher,75 T. Flick,176A. Floderus,80L. R. Flores Castillo,174A. C. Florez Bustos,160bM. J. Flowerdew,100T. Fonseca Martin,17
A. Formica,137A. Forti,83D. Fortin,160aD. Fournier,116H. Fox,71P. Francavilla,12M. Franchini,20a,20b S. Franchino,30D. Francis,30M. Franklin,57S. Franz,61M. Fraternali,120a,120bS. Fratina,121S. T. French,28
C. Friedrich,42F. Friedrich,44D. Froidevaux,30J. A. Frost,28C. Fukunaga,157E. Fullana Torregrosa,128 B. G. Fulsom,144J. Fuster,168C. Gabaldon,55O. Gabizon,173A. Gabrielli,20a,20bA. Gabrielli,133a,133bS. Gadatsch,106 T. Gadfort,25S. Gadomski,49G. Gagliardi,50a,50bP. Gagnon,60C. Galea,99B. Galhardo,125aE. J. Gallas,119V. Gallo,17 B. J. Gallop,130P. Gallus,127G. Galster,36K. K. Gan,110R. P. Gandrajula,62Y. S. Gao,144,gF. M. Garay Walls,46
F. Garberson,177C. Garcı´a,168J. E. Garcı´a Navarro,168M. Garcia-Sciveres,15R. W. Gardner,31N. Garelli,144 V. Garonne,30C. Gatti,47G. Gaudio,120aB. Gaur,142L. Gauthier,94P. Gauzzi,133a,133bI. L. Gavrilenko,95C. Gay,169
G. Gaycken,21E. N. Gazis,10P. Ge,33d,oZ. Gecse,169C. N. P. Gee,130D. A. A. Geerts,106Ch. Geich-Gimbel,21 K. Gellerstedt,147a,147bC. Gemme,50aA. Gemmell,53M. H. Genest,55S. Gentile,133a,133bM. George,54S. George,76
D. Gerbaudo,164A. Gershon,154H. Ghazlane,136bN. Ghodbane,34B. Giacobbe,20aS. Giagu,133a,133b V. Giangiobbe,12P. Giannetti,123a,123bF. Gianotti,30B. Gibbard,25S. M. Gibson,76M. Gilchriese,15T. P. S. Gillam,28
D. Gillberg,30A. R. Gillman,130D. M. Gingrich,3,fN. Giokaris,9M. P. Giordani,165a,165cR. Giordano,103a,103b F. M. Giorgi,16P. Giovannini,100P. F. Giraud,137D. Giugni,90aC. Giuliani,48M. Giunta,94B. K. Gjelsten,118 I. Gkialas,155,pL. K. Gladilin,98C. Glasman,81J. Glatzer,21A. Glazov,42G. L. Glonti,64M. Goblirsch-Kolb,100
J. R. Goddard,75J. Godfrey,143J. Godlewski,30M. Goebel,42C. Goeringer,82S. Goldfarb,88T. Golling,177 D. Golubkov,129A. Gomes,125a,dL. S. Gomez Fajardo,42R. Gonc¸alo,76J. Goncalves Pinto Firmino Da Costa,42
L. Gonella,21S. Gonza´lez de la Hoz,168G. Gonzalez Parra,12M. L. Gonzalez Silva,27S. Gonzalez-Sevilla,49 J. J. Goodson,149L. Goossens,30P. A. Gorbounov,96H. A. Gordon,25I. Gorelov,104G. Gorfine,176B. Gorini,30 E. Gorini,72a,72bA. Gorisˇek,74E. Gornicki,39A. T. Goshaw,6C. Go¨ssling,43M. I. Gostkin,64I. Gough Eschrich,164 M. Gouighri,136aD. Goujdami,136cM. P. Goulette,49A. G. Goussiou,139C. Goy,5S. Gozpinar,23H. M. X. Grabas,137
L. Graber,54I. Grabowska-Bold,38aP. Grafstro¨m,20a,20bK-J. Grahn,42E. Gramstad,118F. Grancagnolo,72a S. Grancagnolo,16V. Grassi,149V. Gratchev,122H. M. Gray,30J. A. Gray,149E. Graziani,135aO. G. Grebenyuk,122 Z. D. Greenwood,78,mK. Gregersen,36I. M. Gregor,42P. Grenier,144J. Griffiths,8N. Grigalashvili,64A. A. Grillo,138
K. Grimm,71S. Grinstein,12,qPh. Gris,34Y. V. Grishkevich,98J.-F. Grivaz,116J. P. Grohs,44A. Grohsjean,42 E. Gross,173J. Grosse-Knetter,54J. Groth-Jensen,173K. Grybel,142F. Guescini,49D. Guest,177O. Gueta,154 C. Guicheney,34E. Guido,50a,50bT. Guillemin,116S. Guindon,2U. Gul,53J. Gunther,127J. Guo,35S. Gupta,119
P. Gutierrez,112N. G. Gutierrez Ortiz,53N. Guttman,154O. Gutzwiller,174C. Guyot,137C. Gwenlan,119 C. B. Gwilliam,73A. Haas,109C. Haber,15H. K. Hadavand,8P. Haefner,21S. Hageboeck,21Z. Hajduk,39 H. Hakobyan,178D. Hall,119G. Halladjian,62K. Hamacher,176P. Hamal,114K. Hamano,87M. Hamer,54 A. Hamilton,146a,rS. Hamilton,162L. Han,33bK. Hanagaki,117K. Hanawa,156M. Hance,15C. Handel,82P. Hanke,58a
J. R. Hansen,36J. B. Hansen,36J. D. Hansen,36P. H. Hansen,36P. Hansson,144K. Hara,161A. S. Hard,174 T. Harenberg,176S. Harkusha,91D. Harper,88R. D. Harrington,46O. M. Harris,139J. Hartert,48F. Hartjes,106
A. Harvey,56S. Hasegawa,102Y. Hasegawa,141S. Hassani,137S. Haug,17M. Hauschild,30R. Hauser,89 M. Havranek,21C. M. Hawkes,18R. J. Hawkings,30A. D. Hawkins,80T. Hayashi,161D. Hayden,89C. P. Hays,119 H. S. Hayward,73S. J. Haywood,130S. J. Head,18T. Heck,82V. Hedberg,80L. Heelan,8S. Heim,121B. Heinemann,15
S. Heisterkamp,36J. Hejbal,126L. Helary,22C. Heller,99M. Heller,30S. Hellman,147a,147bD. Hellmich,21 C. Helsens,30J. Henderson,119R. C. W. Henderson,71A. Henrichs,177A. M. Henriques Correia,30 S. Henrot-Versille,116C. Hensel,54G. H. Herbert,16C. M. Hernandez,8Y. Herna´ndez Jime´nez,168
R. Herrberg-Schubert,16G. Herten,48R. Hertenberger,99L. Hervas,30G. G. Hesketh,77N. P. Hessey,106R. Hickling,75 E. Higo´n-Rodriguez,168J. C. Hill,28K. H. Hiller,42S. Hillert,21S. J. Hillier,18I. Hinchliffe,15E. Hines,121 M. Hirose,117D. Hirschbuehl,176J. Hobbs,149N. Hod,106M. C. Hodgkinson,140P. Hodgson,140A. Hoecker,30
M. R. Hoeferkamp,104J. Hoffman,40D. Hoffmann,84J. I. Hofmann,58aM. Hohlfeld,82S. O. Holmgren,147a J. L. Holzbauer,89T. M. Hong,121L. Hooft van Huysduynen,109J-Y. Hostachy,55S. Hou,152A. Hoummada,136a J. Howard,119J. Howarth,83M. Hrabovsky,114I. Hristova,16J. Hrivnac,116T. Hryn’ova,5P. J. Hsu,82S.-C. Hsu,139
D. Hu,35X. Hu,25Y. Huang,33aZ. Hubacek,30F. Hubaut,84F. Huegging,21A. Huettmann,42T. B. Huffman,119 E. W. Hughes,35G. Hughes,71M. Huhtinen,30T. A. Hu¨lsing,82M. Hurwitz,15N. Huseynov,64,sJ. Huston,89J. Huth,57 G. Iacobucci,49G. Iakovidis,10I. Ibragimov,142L. Iconomidou-Fayard,116J. Idarraga,116P. Iengo,103aO. Igonkina,106
Y. Ikegami,65K. Ikematsu,142M. Ikeno,65D. Iliadis,155N. Ilic,159Y. Inamaru,66T. Ince,100P. Ioannou,9 M. Iodice,135aK. Iordanidou,9V. Ippolito,133a,133bA. Irles Quiles,168C. Isaksson,167M. Ishino,67M. Ishitsuka,158 R. Ishmukhametov,110C. Issever,119S. Istin,19aA. V. Ivashin,129W. Iwanski,39H. Iwasaki,65J. M. Izen,41V. Izzo,103a B. Jackson,121J. N. Jackson,73M. Jackson,73P. Jackson,1M. R. Jaekel,30V. Jain,2K. Jakobs,48S. Jakobsen,36 T. Jakoubek,126J. Jakubek,127D. O. Jamin,152D. K. Jana,112E. Jansen,77H. Jansen,30J. Janssen,21M. Janus,171 R. C. Jared,174G. Jarlskog,80L. Jeanty,57G.-Y. Jeng,151I. Jen-La Plante,31D. Jennens,87P. Jenni,48,tJ. Jentzsch,43
C. Jeske,171S. Je´ze´quel,5M. K. Jha,20aH. Ji,174W. Ji,82J. Jia,149Y. Jiang,33bM. Jimenez Belenguer,42S. Jin,33a O. Jinnouchi,158M. D. Joergensen,36D. Joffe,40K. E. Johansson,147aP. Johansson,140S. Johnert,42K. A. Johns,7 K. Jon-And,147a,147bG. Jones,171R. W. L. Jones,71T. J. Jones,73P. M. Jorge,125aK. D. Joshi,83J. Jovicevic,148 X. Ju,174C. A. Jung,43R. M. Jungst,30P. Jussel,61A. Juste Rozas,12,qM. Kaci,168A. Kaczmarska,39P. Kadlecik,36
M. Kado,116H. Kagan,110M. Kagan,144E. Kajomovitz,153S. Kalinin,176S. Kama,40N. Kanaya,156M. Kaneda,30 S. Kaneti,28T. Kanno,158V. A. Kantserov,97J. Kanzaki,65B. Kaplan,109A. Kapliy,31D. Kar,53K. Karakostas,10
G. Kasieczka,58bR. D. Kass,110A. Kastanas,14Y. Kataoka,156A. Katre,49J. Katzy,42V. Kaushik,7K. Kawagoe,69 T. Kawamoto,156G. Kawamura,54S. Kazama,156V. F. Kazanin,108M. Y. Kazarinov,64R. Keeler,170P. T. Keener,121 R. Kehoe,40M. Keil,54J. S. Keller,139H. Keoshkerian,5O. Kepka,126B. P. Kersˇevan,74S. Kersten,176K. Kessoku,156
J. Keung,159F. Khalil-zada,11H. Khandanyan,147a,147bA. Khanov,113D. Kharchenko,64A. Khodinov,97 A. Khomich,58aT. J. Khoo,28G. Khoriauli,21A. Khoroshilov,176V. Khovanskiy,96E. Khramov,64J. Khubua,51b H. Kim,147a,147bS. H. Kim,161N. Kimura,172O. Kind,16B. T. King,73M. King,66R. S. B. King,119S. B. King,169
J. Kirk,130A. E. Kiryunin,100T. Kishimoto,66D. Kisielewska,38aT. Kitamura,66T. Kittelmann,124K. Kiuchi,161 E. Kladiva,145bM. Klein,73U. Klein,73K. Kleinknecht,82M. Klemetti,86P. Klimek,147a,147bA. Klimentov,25 R. Klingenberg,43J. A. Klinger,83E. B. Klinkby,36T. Klioutchnikova,30P. F. Klok,105E.-E. Kluge,58aP. Kluit,106 S. Kluth,100E. Kneringer,61E. B. F. G. Knoops,84A. Knue,54B. R. Ko,45T. Kobayashi,156M. Kobel,44M. Kocian,144 P. Kodys,128S. Koenig,82P. Koevesarki,21T. Koffas,29E. Koffeman,106L. A. Kogan,119S. Kohlmann,176F. Kohn,54
Z. Kohout,127T. Kohriki,65T. Koi,144H. Kolanoski,16I. Koletsou,90aJ. Koll,89A. A. Komar,95,aY. Komori,156 T. Kondo,65K. Ko¨neke,48A. C. Ko¨nig,105T. Kono,42,uR. Konoplich,109,vN. Konstantinidis,77R. Kopeliansky,153
S. Koperny,38aL. Ko¨pke,82A. K. Kopp,48K. Korcyl,39K. Kordas,155A. Korn,46A. A. Korol,108I. Korolkov,12 E. V. Korolkova,140V. A. Korotkov,129O. Kortner,100S. Kortner,100V. V. Kostyukhin,21S. Kotov,100V. M. Kotov,64
A. Kotwal,45C. Kourkoumelis,9V. Kouskoura,155A. Koutsman,160aR. Kowalewski,170T. Z. Kowalski,38a W. Kozanecki,137A. S. Kozhin,129V. Kral,127V. A. Kramarenko,98G. Kramberger,74M. W. Krasny,79 A. Krasznahorkay,109J. K. Kraus,21A. Kravchenko,25S. Kreiss,109J. Kretzschmar,73K. Kreutzfeldt,52N. Krieger,54 P. Krieger,159K. Kroeninger,54H. Kroha,100J. Kroll,121J. Kroseberg,21J. Krstic,13aU. Kruchonak,64H. Kru¨ger,21 T. Kruker,17N. Krumnack,63Z. V. Krumshteyn,64A. Kruse,174M. K. Kruse,45M. Kruskal,22T. Kubota,87S. Kuday,4a
S. Kuehn,48A. Kugel,58cT. Kuhl,42V. Kukhtin,64Y. Kulchitsky,91S. Kuleshov,32bM. Kuna,79J. Kunkle,121 A. Kupco,126H. Kurashige,66M. Kurata,161Y. A. Kurochkin,91R. Kurumida,66V. Kus,126E. S. Kuwertz,148 M. Kuze,158J. Kvita,143R. Kwee,16A. La Rosa,49L. La Rotonda,37a,37bL. Labarga,81S. Lablak,136aC. Lacasta,168 F. Lacava,133a,133bJ. Lacey,29H. Lacker,16D. Lacour,79V. R. Lacuesta,168E. Ladygin,64R. Lafaye,5B. Laforge,79
T. Lagouri,177S. Lai,48H. Laier,58aE. Laisne,55L. Lambourne,77C. L. Lampen,7W. Lampl,7E. Lanc¸on,137 U. Landgraf,48M. P. J. Landon,75V. S. Lang,58aC. Lange,42A. J. Lankford,164F. Lanni,25K. Lantzsch,30 A. Lanza,120aS. Laplace,79C. Lapoire,21J. F. Laporte,137T. Lari,90aA. Larner,119M. Lassnig,30P. Laurelli,47 V. Lavorini,37a,37bW. Lavrijsen,15P. Laycock,73B. T. Le,55O. Le Dortz,79E. Le Guirriec,84E. Le Menedeu,12 T. LeCompte,6F. Ledroit-Guillon,55C. A. Lee,152H. Lee,106J. S. H. Lee,117S. C. Lee,152L. Lee,177G. Lefebvre,79
M. Lefebvre,170M. Legendre,137F. Legger,99C. Leggett,15A. Lehan,73M. Lehmacher,21G. Lehmann Miotto,30 A. G. Leister,177M. A. L. Leite,24dR. Leitner,128D. Lellouch,173B. Lemmer,54V. Lendermann,58aK. J. C. Leney,146c
T. Lenz,106G. Lenzen,176B. Lenzi,30R. Leone,7K. Leonhardt,44S. Leontsinis,10C. Leroy,94J-R. Lessard,170 C. G. Lester,28C. M. Lester,121J. Leveˆque,5D. Levin,88L. J. Levinson,173A. Lewis,119G. H. Lewis,109 A. M. Leyko,21M. Leyton,16B. Li,33b,wB. Li,84H. Li,149H. L. Li,31S. Li,45X. Li,88Z. Liang,119,xH. Liao,34
B. Liberti,134aP. Lichard,30K. Lie,166J. Liebal,21W. Liebig,14C. Limbach,21A. Limosani,87M. Limper,62 S. C. Lin,152,yF. Linde,106B. E. Lindquist,149J. T. Linnemann,89E. Lipeles,121A. Lipniacka,14M. Lisovyi,42 T. M. Liss,166D. Lissauer,25A. Lister,169A. M. Litke,138B. Liu,152D. Liu,152J. B. Liu,33bK. Liu,33b,zL. Liu,88
M. Liu,45M. Liu,33bY. Liu,33bM. Livan,120a,120bS. S. A. Livermore,119A. Lleres,55J. Llorente Merino,81 S. L. Lloyd,75F. Lo Sterzo,133a,133bE. Lobodzinska,42P. Loch,7W. S. Lockman,138T. Loddenkoetter,21 F. K. Loebinger,83A. E. Loevschall-Jensen,36A. Loginov,177C. W. Loh,169T. Lohse,16K. Lohwasser,48 M. Lokajicek,126V. P. Lombardo,5R. E. Long,71L. Lopes,125aD. Lopez Mateos,57B. Lopez Paredes,140J. Lorenz,99
N. Lorenzo Martinez,116M. Losada,163P. Loscutoff,15M. J. Losty,160a,aX. Lou,41A. Lounis,116J. Love,6 P. A. Love,71A. J. Lowe,144,gF. Lu,33aH. J. Lubatti,139C. Luci,133a,133bA. Lucotte,55D. Ludwig,42I. Ludwig,48 J. Ludwig,48F. Luehring,60W. Lukas,61L. Luminari,133aE. Lund,118J. Lundberg,147a,147bO. Lundberg,147a,147b B. Lund-Jensen,148M. Lungwitz,82D. Lynn,25R. Lysak,126E. Lytken,80H. Ma,25L. L. Ma,33dG. Maccarrone,47 A. Macchiolo,100B. Macˇek,74J. Machado Miguens,125aD. Macina,30R. Mackeprang,36R. Madar,48R. J. Madaras,15
H. J. Maddocks,71W. F. Mader,44A. Madsen,167M. Maeno,8T. Maeno,25L. Magnoni,164E. Magradze,54 K. Mahboubi,48J. Mahlstedt,106S. Mahmoud,73G. Mahout,18C. Maiani,137C. Maidantchik,24aA. Maio,125a,d S. Majewski,115Y. Makida,65N. Makovec,116P. Mal,137,aaB. Malaescu,79Pa. Malecki,39V. P. Maleev,122F. Malek,55
U. Mallik,62D. Malon,6C. Malone,144S. Maltezos,10V. M. Malyshev,108S. Malyukov,30J. Mamuzic,13b L. Mandelli,90aI. Mandic´,74R. Mandrysch,62J. Maneira,125aA. Manfredini,100L. Manhaes de Andrade Filho,24b
J. A. Manjarres Ramos,137A. Mann,99P. M. Manning,138A. Manousakis-Katsikakis,9B. Mansoulie,137 R. Mantifel,86L. Mapelli,30L. March,168J. F. Marchand,29F. Marchese,134a,134bG. Marchiori,79M. Marcisovsky,126 C. P. Marino,170C. N. Marques,125aF. Marroquim,24aZ. Marshall,15L. F. Marti,17S. Marti-Garcia,168B. Martin,30 B. Martin,89J. P. Martin,94T. A. Martin,171V. J. Martin,46B. Martin dit Latour,49H. Martinez,137M. Martinez,12,q S. Martin-Haugh,150A. C. Martyniuk,170M. Marx,139F. Marzano,133aA. Marzin,112L. Masetti,82T. Mashimo,156
R. Mashinistov,95J. Masik,83A. L. Maslennikov,108I. Massa,20a,20bN. Massol,5P. Mastrandrea,149 A. Mastroberardino,37a,37bT. Masubuchi,156H. Matsunaga,156T. Matsushita,66P. Ma¨ttig,176S. Ma¨ttig,42
J. Mattmann,82C. Mattravers,119,eJ. Maurer,84S. J. Maxfield,73D. A. Maximov,108,hR. Mazini,152 L. Mazzaferro,134a,134bM. Mazzanti,90aS. P. Mc Kee,88A. McCarn,166R. L. McCarthy,149T. G. McCarthy,29 N. A. McCubbin,130K. W. McFarlane,56,aJ. A. Mcfayden,140G. Mchedlidze,51bT. Mclaughlan,18S. J. McMahon,130
R. A. McPherson,170,kA. Meade,85J. Mechnich,106M. Mechtel,176M. Medinnis,42S. Meehan,31 R. Meera-Lebbai,112S. Mehlhase,36A. Mehta,73K. Meier,58aC. Meineck,99B. Meirose,80C. Melachrinos,31 B. R. Mellado Garcia,146cF. Meloni,90a,90bL. Mendoza Navas,163A. Mengarelli,20a,20bS. Menke,100E. Meoni,162
K. M. Mercurio,57S. Mergelmeyer,21N. Meric,137P. Mermod,49L. Merola,103a,103bC. Meroni,90aF. S. Merritt,31 H. Merritt,110A. Messina,30,bbJ. Metcalfe,25A. S. Mete,164C. Meyer,82C. Meyer,31J-P. Meyer,137J. Meyer,30
J. Meyer,54S. Michal,30R. P. Middleton,130S. Migas,73L. Mijovic´,137G. Mikenberg,173M. Mikestikova,126 M. Mikuzˇ,74D. W. Miller,31W. J. Mills,169C. Mills,57A. Milov,173D. A. Milstead,147a,147bD. Milstein,173 A. A. Minaenko,129M. Min˜ano Moya,168I. A. Minashvili,64A. I. Mincer,109B. Mindur,38aM. Mineev,64Y. Ming,174
L. M. Mir,12G. Mirabelli,133aT. Mitani,172J. Mitrevski,138V. A. Mitsou,168S. Mitsui,65P. S. Miyagawa,140 J. U. Mjo¨rnmark,80T. Moa,147a,147bV. Moeller,28S. Mohapatra,149W. Mohr,48S. Molander,147a,147b R. Moles-Valls,168A. Molfetas,30K. Mo¨nig,42C. Monini,55J. Monk,36E. Monnier,84J. Montejo Berlingen,12
F. Monticelli,70S. Monzani,20a,20bR. W. Moore,3C. Mora Herrera,49A. Moraes,53N. Morange,62J. Morel,54 D. Moreno,82M. Moreno Lla´cer,168P. Morettini,50aM. Morgenstern,44M. Morii,57S. Moritz,82A. K. Morley,148
G. Mornacchi,30J. D. Morris,75L. Morvaj,102H. G. Moser,100M. Mosidze,51bJ. Moss,110R. Mount,144 E. Mountricha,10,ccS. V. Mouraviev,95,aE. J. W. Moyse,85R. D. Mudd,18F. Mueller,58aJ. Mueller,124K. Mueller,21
T. Mueller,28T. Mueller,82D. Muenstermann,49Y. Munwes,154J. A. Murillo Quijada,18W. J. Murray,130 I. Mussche,106E. Musto,153A. G. Myagkov,129,ddM. Myska,126O. Nackenhorst,54J. Nadal,12K. Nagai,61 R. Nagai,158Y. Nagai,84K. Nagano,65A. Nagarkar,110Y. Nagasaka,59M. Nagel,100A. M. Nairz,30Y. Nakahama,30
K. Nakamura,65T. Nakamura,156I. Nakano,111H. Namasivayam,41G. Nanava,21A. Napier,162R. Narayan,58b M. Nash,77,eT. Nattermann,21T. Naumann,42G. Navarro,163H. A. Neal,88P. Yu. Nechaeva,95T. J. Neep,83 A. Negri,120a,120bG. Negri,30M. Negrini,20aS. Nektarijevic,49A. Nelson,164T. K. Nelson,144S. Nemecek,126
P. Nemethy,109A. A. Nepomuceno,24aM. Nessi,30,eeM. S. Neubauer,166M. Neumann,176A. Neusiedl,82 R. M. Neves,109P. Nevski,25F. M. Newcomer,121P. R. Newman,18D. H. Nguyen,6V. Nguyen Thi Hong,137
R. B. Nickerson,119R. Nicolaidou,137B. Nicquevert,30J. Nielsen,138N. Nikiforou,35A. Nikiforov,16 V. Nikolaenko,129,ddI. Nikolic-Audit,79K. Nikolics,49K. Nikolopoulos,18P. Nilsson,8Y. Ninomiya,156A. Nisati,133a
R. Nisius,100T. Nobe,158L. Nodulman,6M. Nomachi,117I. Nomidis,155S. Norberg,112M. Nordberg,30 J. Novakova,128M. Nozaki,65L. Nozka,114K. Ntekas,10A.-E. Nuncio-Quiroz,21G. Nunes Hanninger,87
T. Nunnemann,99E. Nurse,77B. J. O’Brien,46F. O’grady,7D. C. O’Neil,143V. O’Shea,53L. B. Oakes,99 F. G. Oakham,29,fH. Oberlack,100J. Ocariz,79A. Ochi,66M. I. Ochoa,77S. Oda,69S. Odaka,65J. Odier,84H. Ogren,60
A. Oh,83S. H. Oh,45C. C. Ohm,30T. Ohshima,102W. Okamura,117H. Okawa,25Y. Okumura,31T. Okuyama,156 A. Olariu,26aA. G. Olchevski,64S. A. Olivares Pino,46M. Oliveira,125a,iD. Oliveira Damazio,25E. Oliver Garcia,168 D. Olivito,121A. Olszewski,39J. Olszowska,39A. Onofre,125a,ffP. U. E. Onyisi,31,ggC. J. Oram,160aM. J. Oreglia,31
Y. Oren,154D. Orestano,135a,135bN. Orlando,72a,72bC. Oropeza Barrera,53R. S. Orr,159B. Osculati,50a,50b R. Ospanov,121G. Otero y Garzon,27H. Otono,69J. P. Ottersbach,106M. Ouchrif,136dE. A. Ouellette,170 F. Ould-Saada,118A. Ouraou,137K. P. Oussoren,106Q. Ouyang,33aA. Ovcharova,15M. Owen,83S. Owen,140 V. E. Ozcan,19aN. Ozturk,8K. Pachal,119A. Pacheco Pages,12C. Padilla Aranda,12S. Pagan Griso,15E. Paganis,140 C. Pahl,100F. Paige,25P. Pais,85K. Pajchel,118G. Palacino,160bC. P. Paleari,7S. Palestini,30D. Pallin,34A. Palma,125a
J. D. Palmer,18Y. B. Pan,174E. Panagiotopoulou,10J. G. Panduro Vazquez,76P. Pani,106N. Panikashvili,88 S. Panitkin,25D. Pantea,26aA. Papadelis,147aTh. D. Papadopoulou,10K. Papageorgiou,155,pA. Paramonov,6
D. Paredes Hernandez,34M. A. Parker,28F. Parodi,50a,50bJ. A. Parsons,35U. Parzefall,48S. Pashapour,54 E. Pasqualucci,133aS. Passaggio,50aA. Passeri,135aF. Pastore,135a,135b,aFr. Pastore,76G. Pa´sztor,49,hhS. Pataraia,176
N. D. Patel,151J. R. Pater,83S. Patricelli,103a,103bT. Pauly,30J. Pearce,170M. Pedersen,118S. Pedraza Lopez,168 M. I. Pedraza Morales,174S. V. Peleganchuk,108D. Pelikan,167H. Peng,33bB. Penning,31A. Penson,35J. Penwell,60
D. V. Perepelitsa,35T. Perez Cavalcanti,42E. Perez Codina,160aM. T. Pe´rez Garcı´a-Estan˜,168V. Perez Reale,35 L. Perini,90a,90bH. Pernegger,30R. Perrino,72aV. D. Peshekhonov,64K. Peters,30R. F. Y. Peters,54,iiB. A. Petersen,30
J. Petersen,30T. C. Petersen,36E. Petit,5A. Petridis,147a,147bC. Petridou,155E. Petrolo,133aF. Petrucci,135a,135b M. Petteni,143R. Pezoa,32bP. W. Phillips,130G. Piacquadio,144E. Pianori,171A. Picazio,49E. Piccaro,75 M. Piccinini,20a,20bS. M. Piec,42R. Piegaia,27D. T. Pignotti,110J. E. Pilcher,31A. D. Pilkington,77J. Pina,125a,d
M. Pinamonti,165a,165c,jjA. Pinder,119J. L. Pinfold,3A. Pingel,36B. Pinto,125aC. Pizio,90a,90bM.-A. Pleier,25 V. Pleskot,128E. Plotnikova,64P. Plucinski,147a,147bS. Poddar,58aF. Podlyski,34R. Poettgen,82L. Poggioli,116
D. Pohl,21M. Pohl,49G. Polesello,120aA. Policicchio,37a,37bR. Polifka,159A. Polini,20aC. S. Pollard,45 V. Polychronakos,25D. Pomeroy,23K. Pomme`s,30L. Pontecorvo,133aB. G. Pope,89G. A. Popeneciu,26b D. S. Popovic,13aA. Poppleton,30X. Portell Bueso,12G. E. Pospelov,100S. Pospisil,127I. N. Potrap,64C. J. Potter,150 C. T. Potter,115G. Poulard,30J. Poveda,60V. Pozdnyakov,64R. Prabhu,77P. Pralavorio,84A. Pranko,15S. Prasad,30
R. Pravahan,25S. Prell,63D. Price,60J. Price,73L. E. Price,6D. Prieur,124M. Primavera,72aM. Proissl,46 K. Prokofiev,109F. Prokoshin,32bE. Protopapadaki,137S. Protopopescu,25J. Proudfoot,6X. Prudent,44 M. Przybycien,38aH. Przysiezniak,5S. Psoroulas,21E. Ptacek,115E. Pueschel,85D. Puldon,149M. Purohit,25,kk P. Puzo,116Y. Pylypchenko,62J. Qian,88A. Quadt,54D. R. Quarrie,15W. B. Quayle,146cD. Quilty,53V. Radeka,25
V. Radescu,42P. Radloff,115F. Ragusa,90a,90bG. Rahal,179S. Rajagopalan,25M. Rammensee,48M. Rammes,142 A. S. Randle-Conde,40C. Rangel-Smith,79K. Rao,164F. Rauscher,99T. C. Rave,48T. Ravenscroft,53M. Raymond,30
A. L. Read,118D. M. Rebuzzi,120a,120bA. Redelbach,175G. Redlinger,25R. Reece,121K. Reeves,41A. Reinsch,115 I. Reisinger,43M. Relich,164C. Rembser,30Z. L. Ren,152A. Renaud,116M. Rescigno,133aS. Resconi,90a
B. Resende,137P. Reznicek,99R. Rezvani,94R. Richter,100E. Richter-Was,38bM. Ridel,79P. Rieck,16 M. Rijssenbeek,149A. Rimoldi,120a,120bL. Rinaldi,20aR. R. Rios,40E. Ritsch,61I. Riu,12G. Rivoltella,90a,90b F. Rizatdinova,113E. Rizvi,75S. H. Robertson,86,kA. Robichaud-Veronneau,119D. Robinson,28J. E. M. Robinson,83 A. Robson,53J. G. Rocha de Lima,107C. Roda,123a,123bD. Roda Dos Santos,126L. Rodrigues,30A. Roe,54S. Roe,30 O. Røhne,118S. Rolli,162A. Romaniouk,97M. Romano,20a,20bG. Romeo,27E. Romero Adam,168N. Rompotis,139
L. Roos,79E. Ros,168S. Rosati,133aK. Rosbach,49A. Rose,150M. Rose,76P. L. Rosendahl,14O. Rosenthal,142 V. Rossetti,12E. Rossi,133a,133bL. P. Rossi,50aR. Rosten,139M. Rotaru,26aI. Roth,173J. Rothberg,139D. Rousseau,116 C. R. Royon,137A. Rozanov,84Y. Rozen,153X. Ruan,146cF. Rubbo,12I. Rubinskiy,42N. Ruckstuhl,106V. I. Rud,98 C. Rudolph,44M. S. Rudolph,159F. Ru¨hr,7A. Ruiz-Martinez,63L. Rumyantsev,64Z. Rurikova,48N. A. Rusakovich,64
A. Ruschke,99J. P. Rutherfoord,7N. Ruthmann,48P. Ruzicka,126Y. F. Ryabov,122M. Rybar,128G. Rybkin,116 N. C. Ryder,119A. F. Saavedra,151A. Saddique,3I. Sadeh,154H. F-W. Sadrozinski,138R. Sadykov,64 F. Safai Tehrani,133aH. Sakamoto,156G. Salamanna,75A. Salamon,134aM. Saleem,112D. Salek,30D. Salihagic,100
A. Salnikov,144J. Salt,168B. M. Salvachua Ferrando,6D. Salvatore,37a,37bF. Salvatore,150A. Salvucci,105 A. Salzburger,30D. Sampsonidis,155A. Sanchez,103a,103bJ. Sa´nchez,168V. Sanchez Martinez,168H. Sandaker,14
H. G. Sander,82M. P. Sanders,99M. Sandhoff,176T. Sandoval,28C. Sandoval,163R. Sandstroem,100 D. P. C. Sankey,130A. Sansoni,47C. Santoni,34R. Santonico,134a,134bH. Santos,125aI. Santoyo Castillo,150 K. Sapp,124A. Sapronov,64J. G. Saraiva,125aT. Sarangi,174E. Sarkisyan-Grinbaum,8B. Sarrazin,21F. Sarri,123a,123b
G. Sartisohn,176O. Sasaki,65Y. Sasaki,156N. Sasao,67I. Satsounkevitch,91G. Sauvage,5,aE. Sauvan,5 J. B. Sauvan,116P. Savard,159,fV. Savinov,124D. O. Savu,30C. Sawyer,119L. Sawyer,78,mD. H. Saxon,53J. Saxon,121
C. Sbarra,20aA. Sbrizzi,3T. Scanlon,30D. A. Scannicchio,164M. Scarcella,151J. Schaarschmidt,116P. Schacht,100 D. Schaefer,121R. Schaefer,42A. Schaelicke,46S. Schaepe,21S. Schaetzel,58bU. Scha¨fer,82A. C. Schaffer,116
D. Schaile,99R. D. Schamberger,149V. Scharf,58aV. A. Schegelsky,122D. Scheirich,88M. Schernau,164 M. I. Scherzer,35C. Schiavi,50a,50bJ. Schieck,99C. Schillo,48M. Schioppa,37a,37bS. Schlenker,30E. Schmidt,48
K. Schmieden,30C. Schmitt,82C. Schmitt,99S. Schmitt,58bB. Schneider,17Y. J. Schnellbach,73U. Schnoor,44 L. Schoeffel,137A. Schoening,58bA. L. S. Schorlemmer,54M. Schott,82D. Schouten,160aJ. Schovancova,126 M. Schram,86C. Schroeder,82N. Schroer,58cN. Schuh,82M. J. Schultens,21H.-C. Schultz-Coulon,58aH. Schulz,16
M. Schumacher,48B. A. Schumm,138Ph. Schune,137A. Schwartzman,144Ph. Schwegler,100Ph. Schwemling,137 R. Schwienhorst,89J. Schwindling,137T. Schwindt,21M. Schwoerer,5F. G. Sciacca,17E. Scifo,116G. Sciolla,23
W. G. Scott,130F. Scutti,21J. Searcy,88G. Sedov,42E. Sedykh,122S. C. Seidel,104A. Seiden,138F. Seifert,44 J. M. Seixas,24aG. Sekhniaidze,103aS. J. Sekula,40K. E. Selbach,46D. M. Seliverstov,122G. Sellers,73M. Seman,145b
N. Semprini-Cesari,20a,20bC. Serfon,30L. Serin,116L. Serkin,54T. Serre,84R. Seuster,160aH. Severini,112 F. Sforza,100A. Sfyrla,30E. Shabalina,54M. Shamim,115L. Y. Shan,33aJ. T. Shank,22Q. T. Shao,87M. Shapiro,15
P. B. Shatalov,96K. Shaw,165a,165cP. Sherwood,77S. Shimizu,66M. Shimojima,101T. Shin,56M. Shiyakova,64 A. Shmeleva,95M. J. Shochet,31D. Short,119S. Shrestha,63E. Shulga,97M. A. Shupe,7S. Shushkevich,42P. Sicho,126
D. Sidorov,113A. Sidoti,133aF. Siegert,48Dj. Sijacki,13aO. Silbert,173J. Silva,125aY. Silver,154D. Silverstein,144 S. B. Silverstein,147aV. Simak,127O. Simard,5Lj. Simic,13aS. Simion,116E. Simioni,82B. Simmons,77 R. Simoniello,90a,90bM. Simonyan,36P. Sinervo,159N. B. Sinev,115V. Sipica,142G. Siragusa,175A. Sircar,78 A. N. Sisakyan,64,aS. Yu. Sivoklokov,98J. Sjo¨lin,147a,147bT. B. Sjursen,14L. A. Skinnari,15H. P. Skottowe,57 K. Yu. Skovpen,108P. Skubic,112M. Slater,18T. Slavicek,127K. Sliwa,162V. Smakhtin,173B. H. Smart,46 L. Smestad,118S. Yu. Smirnov,97Y. Smirnov,97L. N. Smirnova,98,llO. Smirnova,80K. M. Smith,53M. Smizanska,71
K. Smolek,127A. A. Snesarev,95G. Snidero,75J. Snow,112S. Snyder,25R. Sobie,170,kJ. Sodomka,127A. Soffer,154 D. A. Soh,152,xC. A. Solans,30M. Solar,127J. Solc,127E. Yu. Soldatov,97U. Soldevila,168
E. Solfaroli Camillocci,133a,133bA. A. Solodkov,129O. V. Solovyanov,129V. Solovyev,122N. Soni,1A. Sood,15 V. Sopko,127B. Sopko,127M. Sosebee,8R. Soualah,165a,165cP. Soueid,94A. M. Soukharev,108D. South,42 S. Spagnolo,72a,72bF. Spano`,76W. R. Spearman,57R. Spighi,20aG. Spigo,30M. Spousta,128,mmT. Spreitzer,159
B. Spurlock,8R. D. St. Denis,53J. Stahlman,121R. Stamen,58aE. Stanecka,39R. W. Stanek,6C. Stanescu,135a M. Stanescu-Bellu,42M. M. Stanitzki,42S. Stapnes,118E. A. Starchenko,129J. Stark,55P. Staroba,126P. Starovoitov,42
R. Staszewski,39A. Staude,99P. Stavina,145a,aG. Steele,53P. Steinbach,44P. Steinberg,25I. Stekl,127B. Stelzer,143 H. J. Stelzer,89O. Stelzer-Chilton,160aH. Stenzel,52S. Stern,100G. A. Stewart,30J. A. Stillings,21M. C. Stockton,86
M. Stoebe,86K. Stoerig,48G. Stoicea,26aS. Stonjek,100A. R. Stradling,8A. Straessner,44J. Strandberg,148 S. Strandberg,147a,147bA. Strandlie,118E. Strauss,144M. Strauss,112P. Strizenec,145bR. Stro¨hmer,175D. M. Strom,115
R. Stroynowski,40B. Stugu,14I. Stumer,25,aJ. Stupak,149P. Sturm,176N. A. Styles,42D. Su,144HS. Subramania,3 R. Subramaniam,78A. Succurro,12Y. Sugaya,117C. Suhr,107M. Suk,127V. V. Sulin,95S. Sultansoy,4cT. Sumida,67
X. Sun,55J. E. Sundermann,48K. Suruliz,140G. Susinno,37a,37bM. R. Sutton,150Y. Suzuki,65M. Svatos,126 S. Swedish,169M. Swiatlowski,144I. Sykora,145aT. Sykora,128D. Ta,106K. Tackmann,42A. Taffard,164 R. Tafirout,160aN. Taiblum,154Y. Takahashi,102H. Takai,25R. Takashima,68H. Takeda,66T. Takeshita,141 Y. Takubo,65M. Talby,84A. A. Talyshev,108,hJ. Y. C. Tam,175M. C. Tamsett,78,nnK. G. Tan,87J. Tanaka,156 R. Tanaka,116S. Tanaka,132S. Tanaka,65A. J. Tanasijczuk,143K. Tani,66N. Tannoury,84S. Tapprogge,82S. Tarem,153
F. Tarrade,29G. F. Tartarelli,90aP. Tas,128M. Tasevsky,126T. Tashiro,67E. Tassi,37a,37bA. Tavares Delgado,125a Y. Tayalati,136dC. Taylor,77F. E. Taylor,93G. N. Taylor,87W. Taylor,160bM. Teinturier,116F. A. Teischinger,30 M. Teixeira Dias Castanheira,75P. Teixeira-Dias,76K. K. Temming,48H. Ten Kate,30P. K. Teng,152S. Terada,65
K. Terashi,156J. Terron,81M. Testa,47R. J. Teuscher,159,kJ. Therhaag,21T. Theveneaux-Pelzer,34S. Thoma,48 J. P. Thomas,18E. N. Thompson,35P. D. Thompson,18P. D. Thompson,159A. S. Thompson,53L. A. Thomsen,36
E. Thomson,121M. Thomson,28W. M. Thong,87R. P. Thun,88,aF. Tian,35M. J. Tibbetts,15T. Tic,126 V. O. Tikhomirov,95Yu. A. Tikhonov,108,hS. Timoshenko,97E. Tiouchichine,84P. Tipton,177S. Tisserant,84 T. Todorov,5S. Todorova-Nova,128B. Toggerson,164J. Tojo,69S. Toka´r,145aK. Tokushuku,65K. Tollefson,89
L. Tomlinson,83M. Tomoto,102L. Tompkins,31K. Toms,104A. Tonoyan,14C. Topfel,17N. D. Topilin,64 E. Torrence,115H. Torres,79E. Torro´ Pastor,168J. Toth,84,hhF. Touchard,84D. R. Tovey,140H. L. Tran,116 T. Trefzger,175L. Tremblet,30A. Tricoli,30I. M. Trigger,160aS. Trincaz-Duvoid,79M. F. Tripiana,70N. Triplett,25
W. Trischuk,159B. Trocme´,55C. Troncon,90aM. Trottier-McDonald,143M. Trovatelli,135a,135bP. True,89 M. Trzebinski,39A. Trzupek,39C. Tsarouchas,30J. C-L. Tseng,119P. V. Tsiareshka,91D. Tsionou,137G. Tsipolitis,10 S. Tsiskaridze,12V. Tsiskaridze,48E. G. Tskhadadze,51aI. I. Tsukerman,96V. Tsulaia,15J.-W. Tsung,21S. Tsuno,65 D. Tsybychev,149A. Tua,140A. Tudorache,26aV. Tudorache,26aJ. M. Tuggle,31A. N. Tuna,121S. Turchikhin,98,ll
D. Turecek,127I. Turk Cakir,4dR. Turra,90a,90bP. M. Tuts,35A. Tykhonov,74M. Tylmad,147a,147bM. Tyndel,130 K. Uchida,21I. Ueda,156R. Ueno,29M. Ughetto,84M. Ugland,14M. Uhlenbrock,21F. Ukegawa,161G. Unal,30
A. Undrus,25G. Unel,164F. C. Ungaro,48Y. Unno,65D. Urbaniec,35P. Urquijo,21G. Usai,8A. Usanova,61 L. Vacavant,84V. Vacek,127B. Vachon,86S. Vahsen,15N. Valencic,106S. Valentinetti,20a,20bA. Valero,168L. Valery,34 S. Valkar,128E. Valladolid Gallego,168S. Vallecorsa,49J. A. Valls Ferrer,168R. Van Berg,121P. C. Van Der Deijl,106 R. van der Geer,106H. van der Graaf,106R. Van Der Leeuw,106D. van der Ster,30N. van Eldik,30P. van Gemmeren,6 J. Van Nieuwkoop,143I. van Vulpen,106M. Vanadia,100W. Vandelli,30A. Vaniachine,6P. Vankov,42F. Vannucci,79 R. Vari,133aE. W. Varnes,7T. Varol,85D. Varouchas,15A. Vartapetian,8K. E. Varvell,151V. I. Vassilakopoulos,56
F. Vazeille,34T. Vazquez Schroeder,54J. Veatch,7F. Veloso,125aS. Veneziano,133aA. Ventura,72a,72bD. Ventura,85 M. Venturi,48N. Venturi,159V. Vercesi,120aM. Verducci,139W. Verkerke,106J. C. Vermeulen,106A. Vest,44 M. C. Vetterli,143,fI. Vichou,166T. Vickey,146c,ooO. E. Vickey Boeriu,146cG. H. A. Viehhauser,119S. Viel,169 R. Vigne,30M. Villa,20a,20bM. Villaplana Perez,168E. Vilucchi,47M. G. Vincter,29V. B. Vinogradov,64J. Virzi,15
O. Vitells,173M. Viti,42I. Vivarelli,48F. Vives Vaque,3S. Vlachos,10D. Vladoiu,99M. Vlasak,127A. Vogel,21 P. Vokac,127G. Volpi,47M. Volpi,87G. Volpini,90aH. von der Schmitt,100H. von Radziewski,48E. von Toerne,21
V. Vorobel,128M. Vos,168R. Voss,30J. H. Vossebeld,73N. Vranjes,137M. Vranjes Milosavljevic,106V. Vrba,126 M. Vreeswijk,106T. Vu Anh,48R. Vuillermet,30I. Vukotic,31Z. Vykydal,127W. Wagner,176P. Wagner,21 S. Wahrmund,44J. Wakabayashi,102S. Walch,88J. Walder,71R. Walker,99W. Walkowiak,142R. Wall,177P. Waller,73 B. Walsh,177C. Wang,45H. Wang,174H. Wang,40J. Wang,152J. Wang,33aK. Wang,86R. Wang,104S. M. Wang,152
T. Wang,21X. Wang,177A. Warburton,86C. P. Ward,28D. R. Wardrope,77M. Warsinsky,48A. Washbrook,46 C. Wasicki,42I. Watanabe,66P. M. Watkins,18A. T. Watson,18I. J. Watson,151M. F. Watson,18G. Watts,139S. Watts,83
A. T. Waugh,151B. M. Waugh,77S. Webb,83M. S. Weber,17J. S. Webster,31A. R. Weidberg,119P. Weigell,100 J. Weingarten,54C. Weiser,48H. Weits,106P. S. Wells,30T. Wenaus,25D. Wendland,16Z. Weng,152,xT. Wengler,30
S. Wenig,30N. Wermes,21M. Werner,48P. Werner,30M. Werth,164M. Wessels,58aJ. Wetter,162K. Whalen,29 A. White,8M. J. White,87R. White,32bS. White,123a,123bD. Whiteson,164D. Whittington,60D. Wicke,176 F. J. Wickens,130W. Wiedenmann,174M. Wielers,80,eP. Wienemann,21C. Wiglesworth,36L. A. M. Wiik-Fuchs,21
P. A. Wijeratne,77A. Wildauer,100M. A. Wildt,42,uI. Wilhelm,128H. G. Wilkens,30J. Z. Will,99E. Williams,35 H. H. Williams,121S. Williams,28W. Willis,35,aS. Willocq,85J. A. Wilson,18A. Wilson,88I. Wingerter-Seez,5 S. Winkelmann,48F. Winklmeier,30M. Wittgen,144T. Wittig,43J. Wittkowski,99S. J. Wollstadt,82M. W. Wolter,39 H. Wolters,125a,iW. C. Wong,41G. Wooden,88B. K. Wosiek,39J. Wotschack,30M. J. Woudstra,83K. W. Wozniak,39 K. Wraight,53M. Wright,53B. Wrona,73S. L. Wu,174X. Wu,49Y. Wu,88E. Wulf,35T. R. Wyatt,83B. M. Wynne,46
S. Xella,36M. Xiao,137C. Xu,33b,ccD. Xu,33aL. Xu,33b,ppB. Yabsley,151S. Yacoob,146b,qqM. Yamada,65 H. Yamaguchi,156Y. Yamaguchi,156A. Yamamoto,65K. Yamamoto,63S. Yamamoto,156T. Yamamura,156 T. Yamanaka,156K. Yamauchi,102Y. Yamazaki,66Z. Yan,22H. Yang,33eH. Yang,174U. K. Yang,83Y. Yang,110 Z. Yang,147a,147bS. Yanush,92L. Yao,33aY. Yasu,65E. Yatsenko,42K. H. Yau Wong,21J. Ye,40S. Ye,25A. L. Yen,57
E. Yildirim,42M. Yilmaz,4bR. Yoosoofmiya,124K. Yorita,172R. Yoshida,6K. Yoshihara,156C. Young,144 C. J. S. Young,119S. Youssef,22D. R. Yu,15J. Yu,8J. Yu,113L. Yuan,66A. Yurkewicz,107B. Zabinski,39R. Zaidan,62
A. M. Zaitsev,129,ddS. Zambito,23L. Zanello,133a,133bD. Zanzi,100A. Zaytsev,25C. Zeitnitz,176M. Zeman,127 A. Zemla,39O. Zenin,129T. Zˇ enisˇ,145aD. Zerwas,116G. Zevi della Porta,57D. Zhang,88H. Zhang,89J. Zhang,6
L. Zhang,152X. Zhang,33dZ. Zhang,116Z. Zhao,33bA. Zhemchugov,64J. Zhong,119B. Zhou,88N. Zhou,164 C. G. Zhu,33dH. Zhu,42J. Zhu,88Y. Zhu,33bX. Zhuang,33aA. Zibell,99D. Zieminska,60N. I. Zimin,64 C. Zimmermann,82R. Zimmermann,21S. Zimmermann,21S. Zimmermann,48Z. Zinonos,123a,123bM. Ziolkowski,142 R. Zitoun,5L. Zˇ ivkovic´,35G. Zobernig,174A. Zoccoli,20a,20bM. zur Nedden,16G. Zurzolo,103a,103bV. Zutshi,107and
L. Zwalinski30 (ATLAS Collaboration)
1School of Chemistry and Physics, University of Adelaide, Adelaide, Australia 2Physics Department, SUNY Albany, Albany, New York, USA
3Department of Physics, University of Alberta, Edmonton, Alberta, Canada 4aDepartment of Physics, Ankara University, Ankara, Turkey
4bDepartment of Physics, Gazi University, Ankara, Turkey
4cDivision of Physics, TOBB University of Economics and Technology, Ankara, Turkey 4dTurkish Atomic Energy Authority, Ankara, Turkey
5LAPP, CNRS/IN2P3 and Universite´ de Savoie, Annecy-le-Vieux, France 6High Energy Physics Division, Argonne National Laboratory, Argonne Illinois, USA
7Department of Physics, University of Arizona, Tucson, Arizona, USA 8
Department of Physics, The University of Texas at Arlington, Arlington, Texas, USA
9Physics Department, University of Athens, Athens, Greece
10Physics Department, National Technical University of Athens, Zografou, Greece 11Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan
12Institut de Fı´sica d’Altes Energies and Departament de Fı´sica de la Universitat Auto`noma de Barcelona, Barcelona, Spain 13aInstitute of Physics, University of Belgrade, Belgrade, Serbia
