Measurement of the ttbar production cross section in the tau+jets channel using the ATLAS detector

arXiv:1211.7205v2 [hep-ex] 22 Mar 2013

EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)

CERN-PH-EP-2012-328

Submitted to: EPJC

Measurement of the

t¯

t

_{production cross section in the tau+jets}

channel using the ATLAS detector

The ATLAS Collaboration

Abstract

A measurement of the top quark pair production cross section in the final state with a hadronically

decaying tau lepton and jets is presented. The analysis is based on proton–proton collision data

recorded by the ATLAS experiment at the LHC, with a centre-of-mass energy of 7 TeV. The data

sample corresponds to an integrated luminosity of 1.67 fb

_{. The cross section is measured to be}

σ

= 194

±

18 (stat.)

±

46 (syst.) pb and is in agreement with other measurements and with the

(will be inserted by the editor)

Measurement of the t¯

t

_{production cross section in the tau+jets}

channel using the ATLAS detector

The ATLAS Collaboration

1

CERN, 1211 Geneva 23, Switzerland

September 19, 2018

Abstract A measurement of the top quark pair pro-duction cross section in the final state with a hadron-ically decaying tau lepton and jets is presented. The analysis is based on proton–proton collision data re-corded by the ATLAS experiment at the LHC, with a centre-of-mass energy of 7 TeV. The data sample cor-responds to an integrated luminosity of 1.67 fb−1_{. The}

cross section is measured to be σt¯t= 194 ± 18 (stat.) ±

46 (syst.) pb and is in agreement with other measure-ments and with the Standard Model prediction.

1 Introduction

Top quark pairs (t¯t) are produced in abundance at the Large Hadron Collider (LHC) due to the high centre-of-mass energy of 7 TeV. The large sample of t¯t events collected with the ATLAS detector makes it possible to study experimentally challenging decay channels and topologies. This letter describes a measurement of the t¯t production cross section. The final state studied here consists of a hadronically decaying tau lepton (τhad)

and jets, corresponding to the t¯t → [bτhadντ][bqq] decay,

where b and q are used to denote b-quarks and lighter quarks, respectively. Such an event topology with a hadronically decaying tau lepton corresponds to ap-proximately 10% of all t¯t decays [1].

A t¯t cross-section measurement in the final state with tau leptons makes it possible to probe flavour-dependent effects in top quark decays. It is also rel-evant to searches for processes beyond the Standard Model, where t¯t events with tau leptons in the final state are a dominant background. This measurement is particularly important for hypothetical charged Higgs boson production [2–5] in top quark decays, where the existence of a charged Higgs boson would lead to an

enhancement in the cross section for the considered t¯t final state. The measurement presented here is com-plementary to the previously published tau + lepton (electron or muon) channel measurement [6]. The most recent cross-section measurements of the tau + jets de-cay channel have been performed by the CDF and D0 collaborations in proton–antiproton collisions at√s = 1.96 TeV [7, 8]. This is the first measurement reported in this specific channel at the LHC.

In this analysis, events with at least five jets are selected, where two of the jets are identified as hav-ing originated from b-quarks. After identifyhav-ing the two jets likely to come from the hadronic decay of one of the top quarks, one of the remaining jets is selected as the τhad candidate from the other top quark. The

τhad contribution is separated from quark- or

gluon-initiated jets with a one-dimensional fit to the distribu-tion of the number of tracks associated with the τhad

candidate. Since the τhaddecays preferentially to one or

three charged particles (and other neutral decay prod-ucts), this variable provides good separation between hadronically decaying tau leptons and jets, as the latter typically produce a large number of charged particles. The main backgrounds to the t¯t signal are multijet ev-ents, t¯t events with a different final state or signal events where the wrong jet is chosen as the τhadcandidate. A

small contribution from single-top and W +jets events is also present. The distributions for the backgrounds used in the fit are obtained with data-driven methods.

2 The ATLAS detector

The ATLAS detector [9] is a multipurpose particle phy-sics detector with a forward-backward symmetric

cylin-drical geometry and a near-4π coverage in solid angle1_.

The inner tracking system covers the pseudorapidity range | η | < 2.5, and consists of a silicon pixel detec-tor, a silicon microstrip detector (SCT), and, for | η | < 2.0, a transition radiation tracker. The inner detec-tor is surrounded by a thin superconducting solenoid providing a 2 T magnetic field along the beam direc-tion. A high-granularity liquid-argon sampling electro-magnetic calorimeter covers the region | η | < 3.2. An iron/scintillator tile hadronic calorimeter provides cov-erage in the range | η | < 1.7. The end-cap and forward regions, spanning 1.5 < | η | < 4.9, are instrumented with liquid-argon calorimeters for both electromagnetic and hadronic measurements. The muon spectrometer surrounds the calorimeters. It consists of three large air-core superconducting toroid systems and separate trigger and high-precision tracking chambers providing accurate muon tracking for | η | < 2.7.

3 Data and simulation samples

The data used in this analysis were collected during the first half of the 2011 data-taking period and correspond to a total integrated luminosity of L = 1.67 fb−1_{. The}

data sample was selected with a b-jet trigger that re-quired at least four jets identified with | η | < 3.2 and a transverse energy (ET) above 10 GeV. Two of these jets

were required to be identified as b-jets using a dedicated high-level-trigger b-tagging algorithm [10]. This trigger was enabled for only part of the 2011 data-taking pe-riod and is therefore the limiting factor in determining the integrated luminosity of the dataset used.

The selection efficiency for the t¯t → τhad + jets

signal is derived from Monte Carlo (MC) simulations. The MC@NLO v4.01 [11] generator, with the parton distribution function (PDF) set CT10 [12], is used for the t¯t signal. The theoretical prediction of the t¯t cross section for proton–proton collisions at a centre-of-mass energy of√s = 7 TeV is σt¯t= 167+17₋₁₈pb for a top quark

mass of 172.5 GeV. It has been calculated at approx-imate next-to-next-to-leading order (NNLO) in QCD with Hathor 1.2 [13] using the MSTW2008 90% con-fidence level NNLO PDF sets [14], incorporating PDF

1

ATLAS uses a right-handed coordinate system with its ori-gin at the nominal interaction point (IP) in the centre of the detector and the z-axis along the beam pipe. The x-axis points from the IP to the centre of the LHC ring, and the y-axis points upward. Cylindrical coordinates (r, φ) are used in the transverse (x, y) plane, φ being the azimuthal angle around the beam pipe. The pseudorapidity is defined in terms of the polar angle θ as η = − ln tan(θ/2). The variable ∆R is used to evaluate the distance between objects, and is defined as ∆R =p(∆φ)2_{+ (∆η)}2_.

and αS uncertainties according to the MSTW

prescrip-tion [15], and cross-checked with the next-to-leading-order + next-to-next-to-leading-log calculation of Cac-ciari et al. [16] as implemented in Top++ 1.0 [17]. Tau lepton decays are modelled with Tauola [18]. Samples of simulated events are also used to estimate the small contributions from W +jets, Z+jets, single-top-quark and diboson events, as described in Ref. [19]. The gen-erated events were processed through the full ATLAS detector simulation using Geant4 [20, 21], followed by the trigger and offline reconstruction. The distribution of the number of pile-up events (i.e. collisions in the same, or nearby, bunch crossing as the hard-scattering event) is adjusted to match the scattering multiplicity measured in the data.

4 Event selection

Jets are reconstructed from clusters of calorimeter cells [22] using the anti-kt algorithm [23, 24] with a

radius parameter R = 0.4. The jets are calibrated us-ing transverse momentum- and η-dependent corrections obtained from simulation and validated with collision data [25]. Candidate events are required to contain at least five jets with a transverse momentum (pT) larger

than 20 GeV and | η | < 2.5.

The identification of jets originating from b-quarks is performed using algorithms that combine secondary vertex properties and track impact parameters [26]. The algorithm identifies b-jets with an average efficiency of 60% and provides a light-quark jet rejection factor of about 340 in t¯t topologies. The likelihood of misidenti-fying a τhadas a b-jet in a t¯t event is approximately 5%.

The two jets with the highest b-tag probability are cho-sen as the event b-candidates; events with fewer than two b-jets are rejected.

The magnitude of the missing transverse energy (Emiss

T ) is reconstructed from energy clusters in the

calorimeters. The calibration of each cluster depends on the type of physical object associated with the clus-ter. The transverse momentum of muons in the event is also taken into account. The Emiss

T significance (SEmiss T ) is defined as Emiss T /(0.5 [ √ GeV] ·√Σ ET), where Σ ET

is the scalar sum of the transverse momentum of all objects. Using a SEmiss

T requirement instead of a direct Emiss

T requirement allows the rejection of multijet events

where the Emiss

T arises from energy resolution effects,

while still retaining high efficiency for signal events with Emiss

T coming from particles which do not interact with

the detector [27]. Candidate events are required to have SEmiss

Events containing a reconstructed electron or muon [28, 29] with pT > 15 GeV and | η | < 2.5 are

vetoed to reduce the background due to events contain-ing W bosons that decay to electrons or muons and to avoid overlap with other t¯t cross-section measurements. In each event, a single τhad candidate is selected

from the reconstructed jets using the following proce-dure. First, the reconstruction of the hadronically de-caying top quark is attempted by selecting the three jets (including exactly one of the two b-candidates) which, when their four-momenta are added vectorially, give the highest pTsum. The remaining jet with the highest pT,

excluding the remaining b-candidate, is selected as the τhad candidate. Events where the τhad candidate pT is

below 40 GeV are rejected.

The main contributions to the selected τhad

candi-dates in the signal region come from the signal (τhad

from t¯t events), electrons from t¯t events and misidenti-fied jets from t¯t, single-top-quark production, W +jets and multijet events. The contributions from Z/γ⋆_+jets

and diboson processes are negligible. 5 Data analysis

The majority of τhad decays are characterised by the

presence of one or three charged hadrons in the fi-nal state, which can be reconstructed as charged parti-cle tracks in the inner detector. The number of tracks (ntrack) originating from the interaction point

associ-ated with a τhad candidate is used to separate the τhad

contribution from the misidentified jet background.

track n 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Arbitrary Units 0 0.1 0.2 0.3 0.4 0.5 0.6 MC t Component, t had τ MC t Electron Component, t Multijets, Data 2011 ATLAS = 7 TeV s -1 L dt = 1.67 fb

∫

Fig. 1 Distribution of ntrack for τhad from MC t¯t events

(solid black line), electrons from MC t¯t events (dashed red line), and for jets from multijet events from data (blue tri-angles). The multijet event selection uses a SEmiss

T sideband region as described in Sect. 5. All distributions are normalised to unity.

All selected tracks with pT > 1 GeV located in a

core region spanning ∆R < 0.2 around the jet axis are

counted. To increase the discriminating power, tracks in the outer cone 0.2 < ∆R < 0.6 are also counted, using a variable pT requirement that is dependent on both the

∆R of the outer track and the pT of the core tracks.

This variable pTrequirement is designed to reduce the

contribution from pile-up and underlying event tracks, and is explained in Ref. [30]. The separation power of the ntrack variable is illustrated in Fig. 1 where a

com-parison of the ntrackdistribution is shown for τhad,

elec-trons and misidentified jets from multijet events. To extract the signal from the ntrack distribution,

the data sample is fitted with three probability density functions (templates): a tau/electron template, a gluon-jet template and a quark-gluon-jet template. The τhad

com-ponent from t¯t events constitutes the signal in the event sample. Real electrons from t¯t events (either prompt or from leptonic tau decays) which failed to be rejected by the electron veto also contribute significantly to the event sample. The electron and τhadtemplates are

com-bined into a single tau/electron template to ensure a stable fit, using MC predictions to determine their rel-ative contributions. The tau/electron template is ob-tained from simulated t¯t events. The small expected contributions to the real tau/electron component of the fit from single-top-quark and W +jets events do not change the shape of the template.

The remaining significant contributions come from misidentified jets, and are separated into two templates. The gluon-jet template describes the QCD multijet pro-cesses which are dominated by gluon-initiated jets, and the quark-jet template describes the remaining processes (t¯t, single-top quark and W +jets) that are enriched in quark-initiated jets.

The gluon-jet template is determined using a side-band region where the SEmiss

T requirement is changed to 3 < SEmiss

T < 4. This selection greatly enhances the contribution from multijet events, reducing other con-tributions (e.g. from t¯t events) to less than 1%. The regions defined by the selection 2 < SEmiss

T < 3 and 4 < SEmiss

T < 5 are also used to study any correlations between the SEmiss

T criteria and the ntrackdistribution. The quark-jet template is obtained from a t¯t control sample where the τhadcandidate is replaced by a muon

candidate. The reconstructed muon [29] is required to have pT > 20 GeV, | η | < 2.5 and no jet within a

dis-tance ∆R = 0.4. The requirement on the number of non-b-tagged jets is changed from three to two as the jet corresponding to the τhad is now replaced by a muon.

The other selection requirements are the same as for the signal region. This isolates t¯t events with very high purity; the contribution from backgrounds is estimated from MC predictions to be at the 5% level, and consists mainly of single-top-quark and W +jets events. The two

highest-pT jets that are not identified as b-jet

candi-dates are selected as τhad candidates. The template is

corrected using MC simulations for differences in the transverse momentum distribution between the signal region and the control sample, and for the expected con-tribution to the control sample from t¯t dilepton events (t¯t → µ + τhad+ X, t¯t → µ + e + X).

6 Results

An extended binned-likelihood fit is used to extract the different contributions from the ntrackdistribution. To

improve the fit stability, a soft constraint is applied to the ratio of quark-jet events to tau/electron events, which are dominated by the same process (t¯t events). The constraint, based on MC predictions, is a Gaussian with a width of 19% of its central value. This width was estimated based on studies of the associated systematic uncertainties using the same methodology as described in Sect. 7. The statistical uncertainties on the fit param-eters are calculated using the shape of the fit likelihood. The systematic uncertainties on the shapes of the tem-plates are propagated using a pseudo-experiment ap-proach, taking into account the bin-by-bin correlations. This yields a final number of tau/electron events of 270 ± 24 (stat.) ± 11 (syst.). track n 0 2 4 6 8 10 12 14 16 18 Events 0 20 40 60 80 100 120 140 160 180 200 Data 2011 Fit [All] Fit [Tau/Electron] Fit [Quark-jets] Fit [Gluon-jets] ATLAS = 7 TeV s -1 L dt = 1.67 fb

∫

Fig. 2 The ntrack distribution for τhadcandidates after all

selection cuts. The black points correspond to data, while the solid black line is the result of the fit. The red (dashed), blue (dotted) and magenta (dash-dotted) histograms show the fitted contributions from the tau/electron signal, and the gluon-jet and quark-jet backgrounds, respectively.

The fit results are shown in Fig. 2. A comparison between the fit results, and the expected event yields from the MC predictions is presented in Table 1. The numbers are in good agreement.

To extract the number of signal events, predictions from simulation are used to subtract the backgrounds

Source Number of events tau/electron t¯t (τhad) 170 ± 40 t¯t (electrons) 47 ± 11 Single top 12 ± 2 W +jets 9 ± 5 Total expected 240 ± 50

Fit result 270 ± 24 (stat.) ± 11 (syst.) quark-jet

t¯t (jets) 540 ± 160

Single top 24 ± 4

W +jets 21 ± 12

Total expected 580 ± 160

Fit result 520 ± 97 (stat.) ± 78 (syst.) gluon-jet

Fit result 960 ± 77 (stat.) ± 74 (syst.) Table 1 Comparison of the numbers of events from MC ex-pectations and from the results of the fit to the data for the three templates. The uncertainties on the MC expectations include the systematic uncertainties of the selection efficiency described in Sect. 7. No MC predictions are available for the gluon-jet contribution.

from W +jets and single-top events (9 ± 5 and 12 ± 2, respectively) from the fitted number of tau/electron ev-ents. The number is then scaled by the expected ratio, Nτ/(Nτ+ Ne), of τhad and electrons passing the

selec-tion in the t¯t sample. This ratio is estimated from MC simulation to be 0.78 ± 0.03 (stat.) ± 0.03 (syst.). This yields a final number of observed signal events of Nτ =

194 ± 18 (stat.) ± 11 (syst.).

The cross section is obtained using σt¯t= Nτ/(L · ε).

The efficiency (ε) is estimated from MC simulation to be (6.0 ± 1.4) ×10−4_{. It includes the branching}

frac-tions for the various t¯t decays and the acceptance, and assumes Br(t¯t →τhad + jets) to be 0.098 ± 0.002 [1].

The efficiency is corrected for a 13% difference between MC simulation and data in the trigger and b-tagging efficiencies [26]. The method used for obtaining the un-certainty on the cross section is detailed in Sect. 7.

The cross section is measured to be σt¯t = 194 ±

18 (stat.) ± 46 (syst.) pb.

7 Systematic uncertainties

A summary of all systematic uncertainties on the cross section is given in Table 2.

The uncertainty on the selection efficiency due to the choice of the configuration for the MC simulation is estimated by using alternative MC samples and reweight-ing procedures. The difference in the efficiency obtained from various configurations is taken as the uncertainty.

Source of uncertainty Relative uncertainty ISR/FSR 15% Event generator 11% Hadronisation model 6% PDFs 2% Pile-up 1%

b-jet tagging efficiency 9%

Jet energy scale 5%

Emiss

T significance mismodelling 5%

b-jet trigger efficiency 3%

Jet energy resolution 2%

Fit systematic uncertainties 4%

Luminosity 4%

Total uncertainty 24%

Table 2 Systematic uncertainties on the t¯t cross section.

The uncertainty on the modeling of the ISR/FSR is taken into account by using AcerMC [31] samples with specific tunes aimed at conservatively varying the amount of parton showering [32]. The uncertainty due to the choice of the matrix element event generator is estimated by comparing t¯t samples generated using MC@NLO_{, Powheg [33–35], and Alpgen [36]. To} study the impact of different hadronization models, ev-ents generated using Powheg are processed with two different hadronization programs: Herwig and Pythia. The uncertainty of the choice of PDFs is estimated us-ing a number of current PDF sets [37].

Uncertainties on the simulation of the detector re-sponse are taken into account using dedicated studies of the reconstructed physics objects (electrons, muons, jets, Emiss

T ). The uncertainties considered are

associ-ated with the jet energy scale, jet energy resolution, b-tagging efficiency, trigger efficiency and the Emiss

T

cal-culation [25, 26]. The uncertainty due to mismodelling of the lepton veto is estimated using the uncertainties on the muon and electron reconstruction efficiencies de-termined from independent data samples, and is found to be negligible.

To obtain the uncertainty on the fit results, varia-tions are applied to the templates to describe various systematic effects. As the tau/electron template is taken directly from MC-simulated t¯t events, the systematic uncertainties on this template are taken from estimates of the mismodelling of the simulation. The dominant contributions come from variations in the amount of ISR/FSR in the simulation (1%), the modelling of the pile-up (1%), and the statistical uncertainties (1%). Un-certainties on the track reconstruction efficiency, jet en-ergy scale, and the ratio of τhadto electrons are found to

be negligible. The quark-jet template is obtained from a µ + jets control sample of t¯t events in data. The

dom-inant contributions to the uncertainty come from the statistical uncertainties (4%), the difference in shape between the µ + jets template and the expected quark-jet distribution, estimated from MC samples (2%), and the MC-based subtraction of the dilepton contribution (1%). The uncertainty on the MC-based kinematic cor-rection is found to be negligible. The gluon-jet template is derived from a background-dominated sideband re-gion with small values of SEmiss

T . The two sources of uncertainties are the dependence of the template on the SEmiss

T criterion of the control region, obtained by varying the SEmiss

T requirement (1%), and the statisti-cal uncertainty of the control region (1%). The total systematic uncertainty on the fit is found to be 4%.

The uncertainty on the luminosity is calculated to be 3.7% as described in Ref. [38]. The total systematic uncertainty on the cross section is 24%.

8 Conclusions

This letter presents a measurement of the top quark pair production cross section in the final state corre-sponding to the t¯t → [bτhadντ][bqq] decay. The

mea-surement uses a dataset corresponding to an integrated luminosity of 1.67 fb−1 _{of proton–proton collision data}

at a centre-of-mass energy of 7 TeV recorded by the AT-LAS experiment at the LHC. The signal has been ex-tracted by fitting the number of tracks associated with tau lepton candidates using templates derived from sim-ulation for the t¯t signal and from the data for the back-grounds.

The t¯t production cross section is measured to be σt¯t = 194 ± 18 (stat.) ± 46 (syst.) pb. This result is

compatible with the highest precision ATLAS measure-ments [39, 40], and with the result of 186 ± 13 (stat.) ± 20 (syst.) ± 7 (lum.) pb obtained in the complemen-tary tau + lepton (electron or muon) channel [6]. It is also in good agreement with the theoretical prediction of 167+17₋₁₈ pb.

9 Acknowledgements

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; COL-CIENCIAS, 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 Fed-eration; 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 Soci-ety and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.

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A. Ahmad148_{, M. Ahsan}41_{, G. Aielli}133a,133b_{, T.P.A. ˚Akesson}79_{, G. Akimoto}155_{, A.V. Akimov}94_{, M.A. Alam}76_,

J. Albert169_{, S. Albrand}55_{, M. Aleksa}30_{, I.N. Aleksandrov}64_{, F. Alessandria}89a_{, C. Alexa}26a_{, G. Alexander}153_,

G. Alexandre49_{, T. Alexopoulos}10_{, M. Alhroob}164a,164c_{, M. Aliev}16_{, G. Alimonti}89a_{, J. Alison}120_,

B.M.M. Allbrooke18, L.J. Allison71, P.P. Allport73, S.E. Allwood-Spiers53, J. Almond82, A. Aloisio102a,102b, R. Alon172_{, A. Alonso}79_{, F. Alonso}70_{, A. Altheimer}35_{, B. Alvarez Gonzalez}88_{, M.G. Alviggi}102a,102b_{, K. Amako}65_,

C. Amelung23_{, V.V. Ammosov}128,∗_{, S.P. Amor Dos Santos}124a_{, A. Amorim}124a,c_{, N. Amram}153_,

C. Anastopoulos30_{, L.S. Ancu}17_{, N. Andari}115_{, T. Andeen}35_{, C.F. Anders}58b_{, G. Anders}58a_{, K.J. Anderson}31_,

A. Andreazza89a,89b_{, V. Andrei}58a_{, M-L. Andrieux}55_{, X.S. Anduaga}70_{, S. Angelidakis}9_{, P. Anger}44_,

A. Angerami35_{, F. Anghinolfi}30_{, A. Anisenkov}107_{, N. Anjos}124a_{, A. Annovi}47_{, A. Antonaki}9_{, M. Antonelli}47_,

A. Antonov96_{, J. Antos}144b_{, F. Anulli}132a_{, M. Aoki}101_{, S. Aoun}83_{, L. Aperio Bella}5_{, R. Apolle}118,d_,

G. Arabidze88_{, I. Aracena}143_{, Y. Arai}65_{, A.T.H. Arce}45_{, S. Arfaoui}148_{, J-F. Arguin}93_{, S. Argyropoulos}42_,

E. Arik19a,∗_{, M. Arik}19a_{, A.J. Armbruster}87_{, O. Arnaez}81_{, V. Arnal}80_{, A. Artamonov}95_{, G. Artoni}132a,132b_,

D. Arutinov21_{, S. Asai}155_{, S. Ask}28_{, B. ˚Asman}146a,146b_{, L. Asquith}6_{, K. Assamagan}25,e_{, A. Astbury}169_,

M. Atkinson165_{, B. Aubert}5_{, E. Auge}115_{, K. Augsten}126_{, M. Aurousseau}145a_{, G. Avolio}30_{, D. Axen}168_,

G. Azuelos93,f_{, Y. Azuma}155_{, M.A. Baak}30_{, G. Baccaglioni}89a_{, C. Bacci}134a,134b_{, A.M. Bach}15_{, H. Bachacou}136_,

K. Bachas154_{, M. Backes}49_{, M. Backhaus}21_{, J. Backus Mayes}143_{, E. Badescu}26a_{, P. Bagnaia}132a,132b_,

S. Bahinipati3_{, Y. Bai}33a_{, D.C. Bailey}158_{, T. Bain}35_{, J.T. Baines}129_{, O.K. Baker}176_{, M.D. Baker}25_{, S. Baker}77_,

P. Balek127_{, E. Banas}39_{, P. Banerjee}93_{, Sw. Banerjee}173_{, D. Banfi}30_{, A. Bangert}150_{, V. Bansal}169_{, H.S. Bansil}18_,

L. Barak172_{, S.P. Baranov}94_{, T. Barber}48_{, E.L. Barberio}86_{, D. Barberis}50a,50b_{, M. Barbero}21_{, D.Y. Bardin}64_,

T. Barillari99_{, M. Barisonzi}175_{, T. Barklow}143_{, N. Barlow}28_{, B.M. Barnett}129_{, R.M. Barnett}15_{, A. Baroncelli}134a_,

G. Barone49_{, A.J. Barr}118_{, F. Barreiro}80_{, J. Barreiro Guimar˜aes da Costa}57_{, R. Bartoldus}143_{, A.E. Barton}71_,

V. Bartsch149_{, A. Basye}165_{, R.L. Bates}53_{, L. Batkova}144a_{, J.R. Batley}28_{, A. Battaglia}17_{, M. Battistin}30_,

F. Bauer136_{, H.S. Bawa}143,g_{, S. Beale}98_{, T. Beau}78_{, P.H. Beauchemin}161_{, R. Beccherle}50a_{, P. Bechtle}21_,

H.P. Beck17_{, K. Becker}175_{, S. Becker}98_{, M. Beckingham}138_{, K.H. Becks}175_{, A.J. Beddall}19c_{, A. Beddall}19c_,

S. Bedikian176_{, V.A. Bednyakov}64_{, C.P. Bee}83_{, L.J. Beemster}105_{, M. Begel}25_{, S. Behar Harpaz}152_{, P.K. Behera}62_,

M. Beimforde99_{, C. Belanger-Champagne}85_{, P.J. Bell}49_{, W.H. Bell}49_{, G. Bella}153_{, L. Bellagamba}20a_,

M. Bellomo30_{, A. Belloni}57_{, O. Beloborodova}107,h_{, K. Belotskiy}96_{, O. Beltramello}30_{, O. Benary}153_,

D. Benchekroun135a_{, K. Bendtz}146a,146b_{, N. Benekos}165_{, Y. Benhammou}153_{, E. Benhar Noccioli}49_,

J.A. Benitez Garcia159b_{, D.P. Benjamin}45_{, M. Benoit}115_{, J.R. Bensinger}23_{, K. Benslama}130_{, S. Bentvelsen}105_,

D. Berge30_{, E. Bergeaas Kuutmann}42_{, N. Berger}5_{, F. Berghaus}169_{, E. Berglund}105_{, J. Beringer}15_{, P. Bernat}77_,

R. Bernhard48_{, C. Bernius}25_{, T. Berry}76_{, C. Bertella}83_{, A. Bertin}20a,20b_{, F. Bertolucci}122a,122b_,

M.I. Besana89a,89b, G.J. Besjes104, N. Besson136, S. Bethke99, W. Bhimji46, R.M. Bianchi30, L. Bianchini23, M. Bianco72a,72b_{, O. Biebel}98_{, S.P. Bieniek}77_{, K. Bierwagen}54_{, J. Biesiada}15_{, M. Biglietti}134a_{, H. Bilokon}47_,

M. Bindi20a,20b_{, S. Binet}115_{, A. Bingul}19c_{, C. Bini}132a,132b_{, C. Biscarat}178_{, B. Bittner}99_{, C.W. Black}150_,

K.M. Black22_{, R.E. Blair}6_{, J.-B. Blanchard}136_{, T. Blazek}144a_{, I. Bloch}42_{, C. Blocker}23_{, J. Blocki}39_{, A. Blondel}49_,

W. Blum81_{, U. Blumenschein}54_{, G.J. Bobbink}105_{, V.S. Bobrovnikov}107_{, S.S. Bocchetta}79_{, A. Bocci}45_,

C.R. Boddy118_{, M. Boehler}48_{, J. Boek}175_{, T.T. Boek}175_{, N. Boelaert}36_{, J.A. Bogaerts}30_{, A. Bogdanchikov}107_,

A. Bogouch90,∗_{, C. Bohm}146a_{, J. Bohm}125_{, V. Boisvert}76_{, T. Bold}38_{, V. Boldea}26a_{, N.M. Bolnet}136_,

M. Bomben78_{, M. Bona}75_{, M. Boonekamp}136_{, S. Bordoni}78_{, C. Borer}17_{, A. Borisov}128_{, G. Borissov}71_,

I. Borjanovic13a_{, M. Borri}82_{, S. Borroni}87_{, J. Bortfeldt}98_{, V. Bortolotto}134a,134b_{, K. Bos}105_{, D. Boscherini}20a_,

M. Bosman12, H. Boterenbrood105, J. Bouchami93, J. Boudreau123, E.V. Bouhova-Thacker71, D. Boumediene34, C. Bourdarios115_{, N. Bousson}83_{, A. Boveia}31_{, J. Boyd}30_{, I.R. Boyko}64_{, I. Bozovic-Jelisavcic}13b_{, J. Bracinik}18_,

P. Branchini134a_{, A. Brandt}8_{, G. Brandt}118_{, O. Brandt}54_{, U. Bratzler}156_{, B. Brau}84_{, J.E. Brau}114_,

H.M. Braun175,∗_{, S.F. Brazzale}164a,164c_{, B. Brelier}158_{, J. Bremer}30_{, K. Brendlinger}120_{, R. Brenner}166_,

S. Bressler172_{, T.M. Bristow}145b_{, D. Britton}53_{, F.M. Brochu}28_{, I. Brock}21_{, R. Brock}88_{, F. Broggi}89a_,

C. Bromberg88_{, J. Bronner}99_{, G. Brooijmans}35_{, T. Brooks}76_{, W.K. Brooks}32b_{, G. Brown}82_,

M. Bruschi20a_{, L. Bryngemark}79_{, T. Buanes}14_{, Q. Buat}55_{, F. Bucci}49_{, J. Buchanan}118_{, P. Buchholz}141_,

R.M. Buckingham118_{, A.G. Buckley}46_{, S.I. Buda}26a_{, I.A. Budagov}64_{, B. Budick}108_{, V. B¨uscher}81_{, L. Bugge}117_,

O. Bulekov96_{, A.C. Bundock}73_{, M. Bunse}43_{, T. Buran}117_{, H. Burckhart}30_{, S. Burdin}73_{, T. Burgess}14_{, S. Burke}129_,

E. Busato34_{, P. Bussey}53_{, C.P. Buszello}166_{, B. Butler}143_{, J.M. Butler}22_{, C.M. Buttar}53_{, J.M. Butterworth}77_,

W. Buttinger28_{, M. Byszewski}30_{, S. Cabrera Urb´an}167_{, D. Caforio}20a,20b_{, O. Cakir}4a_{, P. Calafiura}15_,

G. Calderini78_{, P. Calfayan}98_{, R. Calkins}106_{, L.P. Caloba}24a_{, R. Caloi}132a,132b_{, D. Calvet}34_{, S. Calvet}34_,

R. Camacho Toro34_{, P. Camarri}133a,133b_{, D. Cameron}117_{, L.M. Caminada}15_{, R. Caminal Armadans}12_,

S. Campana30_{, M. Campanelli}77_{, V. Canale}102a,102b_{, F. Canelli}31_{, A. Canepa}159a_{, J. Cantero}80_{, R. Cantrill}76_,

M.D.M. Capeans Garrido30_{, I. Caprini}26a_{, M. Caprini}26a_{, D. Capriotti}99_{, M. Capua}37a,37b_{, R. Caputo}81_,

R. Cardarelli133a_{, T. Carli}30_{, G. Carlino}102a_{, L. Carminati}89a,89b_{, B. Caron}85_{, S. Caron}104_{, E. Carquin}32b_,

G.D. Carrillo-Montoya145b_{, A.A. Carter}75_{, J.R. Carter}28_{, J. Carvalho}124a,i_{, D. Casadei}108_{, M.P. Casado}12_,

M. Cascella122a,122b_{, C. Caso}50a,50b,∗_{, A.M. Castaneda Hernandez}173,j_{, E. Castaneda-Miranda}173_,

V. Castillo Gimenez167_{, N.F. Castro}124a_{, G. Cataldi}72a_{, P. Catastini}57_{, A. Catinaccio}30_{, J.R. Catmore}30_,

A. Cattai30_{, G. Cattani}133a,133b_{, S. Caughron}88_{, V. Cavaliere}165_{, P. Cavalleri}78_{, D. Cavalli}89a_,

M. Cavalli-Sforza12_{, V. Cavasinni}122a,122b_{, F. Ceradini}134a,134b_{, A.S. Cerqueira}24b_{, A. Cerri}15_{, L. Cerrito}75_,

F. Cerutti15_{, S.A. Cetin}19b_{, A. Chafaq}135a_{, D. Chakraborty}106_{, I. Chalupkova}127_{, K. Chan}3_{, P. Chang}165_,

B. Chapleau85_{, J.D. Chapman}28_{, J.W. Chapman}87_{, D.G. Charlton}18_{, V. Chavda}82_{, C.A. Chavez Barajas}30_,

S. Cheatham85_{, S. Chekanov}6_{, S.V. Chekulaev}159a_{, G.A. Chelkov}64_{, M.A. Chelstowska}104_{, C. Chen}63_{, H. Chen}25_,

S. Chen33c_{, X. Chen}173_{, Y. Chen}35_{, Y. Cheng}31_{, A. Cheplakov}64_{, R. Cherkaoui El Moursli}135e_{, V. Chernyatin}25_,

E. Cheu7, S.L. Cheung158, L. Chevalier136, G. Chiefari102a,102b, L. Chikovani51a,∗, J.T. Childers30, A. Chilingarov71_{, G. Chiodini}72a_{, A.S. Chisholm}18_{, R.T. Chislett}77_{, A. Chitan}26a_{, M.V. Chizhov}64_,

G. Choudalakis31_{, S. Chouridou}137_{, I.A. Christidi}77_{, A. Christov}48_{, D. Chromek-Burckhart}30_{, M.L. Chu}151_,

J. Chudoba125_{, G. Ciapetti}132a,132b_{, A.K. Ciftci}4a_{, R. Ciftci}4a_{, D. Cinca}34_{, V. Cindro}74_{, A. Ciocio}15_{, M. Cirilli}87_,

P. Cirkovic13b_{, Z.H. Citron}172_{, M. Citterio}89a_{, M. Ciubancan}26a_{, A. Clark}49_{, P.J. Clark}46_{, R.N. Clarke}15_,

W. Cleland123_{, J.C. Clemens}83_{, B. Clement}55_{, C. Clement}146a,146b_{, Y. Coadou}83_{, M. Cobal}164a,164c_,

A. Coccaro138_{, J. Cochran}63_{, L. Coffey}23_{, J.G. Cogan}143_{, J. Coggeshall}165_{, J. Colas}5_{, S. Cole}106_{, A.P. Colijn}105_,

N.J. Collins18_{, C. Collins-Tooth}53_{, J. Collot}55_{, T. Colombo}119a,119b_{, G. Colon}84_{, G. Compostella}99_,

P. Conde Mui˜no124a_{, E. Coniavitis}166_{, M.C. Conidi}12_{, S.M. Consonni}89a,89b_{, V. Consorti}48_{, S. Constantinescu}26a_,

C. Conta119a,119b_{, G. Conti}57_{, F. Conventi}102a,k_{, M. Cooke}15_{, B.D. Cooper}77_{, A.M. Cooper-Sarkar}118_,

K. Copic15_{, T. Cornelissen}175_{, M. Corradi}20a_{, F. Corriveau}85,l_{, A. Cortes-Gonzalez}165_{, G. Cortiana}99_,

G. Costa89a_{, M.J. Costa}167_{, D. Costanzo}139_{, D. Cˆot´e}30_{, L. Courneyea}169_{, G. Cowan}76_{, B.E. Cox}82_,

K. Cranmer108_{, F. Crescioli}78_{, M. Cristinziani}21_{, G. Crosetti}37a,37b_{, S. Cr´ep´e-Renaudin}55_{, C.-M. Cuciuc}26a_,

C. Cuenca Almenar176, T. Cuhadar Donszelmann139, J. Cummings176, M. Curatolo47, C.J. Curtis18,

C. Cuthbert150_{, P. Cwetanski}60_{, H. Czirr}141_{, P. Czodrowski}44_{, Z. Czyczula}176_{, S. D’Auria}53_{, M. D’Onofrio}73_,

A. D’Orazio132a,132b_{, M.J. Da Cunha Sargedas De Sousa}124a_{, C. Da Via}82_{, W. Dabrowski}38_{, A. Dafinca}118_,

T. Dai87, F. Dallaire93, C. Dallapiccola84, M. Dam36, M. Dameri50a,50b, D.S. Damiani137, H.O. Danielsson30, V. Dao49_{, G. Darbo}50a_{, G.L. Darlea}26b_{, J.A. Dassoulas}42_{, W. Davey}21_{, T. Davidek}127_{, N. Davidson}86_,

R. Davidson71_{, E. Davies}118,d_{, M. Davies}93_{, O. Davignon}78_{, A.R. Davison}77_{, Y. Davygora}58a_{, E. Dawe}142_,

I. Dawson139_{, R.K. Daya-Ishmukhametova}23_{, K. De}8_{, R. de Asmundis}102a_{, S. De Castro}20a,20b_{, S. De Cecco}78_,

J. de Graat98_{, N. De Groot}104_{, P. de Jong}105_{, C. De La Taille}115_{, H. De la Torre}80_{, F. De Lorenzi}63_,

L. de Mora71_{, L. De Nooij}105_{, D. De Pedis}132a_{, A. De Salvo}132a_{, U. De Sanctis}164a,164c_{, A. De Santo}149_,

J.B. De Vivie De Regie115, G. De Zorzi132a,132b, W.J. Dearnaley71, R. Debbe25, C. Debenedetti46,

B. Dechenaux55_{, D.V. Dedovich}64_{, J. Degenhardt}120_{, J. Del Peso}80_{, T. Del Prete}122a,122b_{, T. Delemontex}55_,

M. Deliyergiyev74_{, A. Dell’Acqua}30_{, L. Dell’Asta}22_{, M. Della Pietra}102a,k_{, D. della Volpe}102a,102b_{, M. Delmastro}5_,

P.A. Delsart55_{, C. Deluca}105_{, S. Demers}176_{, M. Demichev}64_{, B. Demirkoz}12,m_{, S.P. Denisov}128_{, D. Derendarz}39_,

J.E. Derkaoui135d_{, F. Derue}78_{, P. Dervan}73_{, K. Desch}21_{, E. Devetak}148_{, P.O. Deviveiros}105_{, A. Dewhurst}129_,

B. DeWilde148_{, S. Dhaliwal}158_{, R. Dhullipudi}25,n_{, A. Di Ciaccio}133a,133b_{, L. Di Ciaccio}5_{, C. Di Donato}102a,102b_,

A. Di Girolamo30_{, B. Di Girolamo}30_{, S. Di Luise}134a,134b_{, A. Di Mattia}152_{, B. Di Micco}30_{, R. Di Nardo}47_,

A. Di Simone133a,133b_{, R. Di Sipio}20a,20b_{, M.A. Diaz}32a_{, E.B. Diehl}87_{, J. Dietrich}42_{, T.A. Dietzsch}58a_{, S. Diglio}86_,

K. Dindar Yagci40_{, J. Dingfelder}21_{, F. Dinut}26a_{, C. Dionisi}132a,132b_{, P. Dita}26a_{, S. Dita}26a_{, F. Dittus}30_,

F. Djama83_{, T. Djobava}51b_{, M.A.B. do Vale}24c_{, A. Do Valle Wemans}124a,o_{, T.K.O. Doan}5_{, M. Dobbs}85_,

D. Dobos30_{, E. Dobson}30,p_{, J. Dodd}35_{, C. Doglioni}49_{, T. Doherty}53_{, Y. Doi}65,∗_{, J. Dolejsi}127_{, Z. Dolezal}127_,

A. Dotti122a,122b_{, M.T. Dova}70_{, A.D. Doxiadis}105_{, A.T. Doyle}53_{, N. Dressnandt}120_{, M. Dris}10_{, J. Dubbert}99_,

S. Dube15_{, E. Duchovni}172_{, G. Duckeck}98_{, D. Duda}175_{, A. Dudarev}30_{, F. Dudziak}63_{, M. D¨uhrssen}30_,

I.P. Duerdoth82_{, L. Duflot}115_{, M-A. Dufour}85_{, L. Duguid}76_{, M. Dunford}58a_{, H. Duran Yildiz}4a_{, R. Duxfield}139_,

M. Dwuznik38_{, M. D¨uren}52_{, W.L. Ebenstein}45_{, J. Ebke}98_{, S. Eckweiler}81_{, W. Edson}2_{, C.A. Edwards}76_,

N.C. Edwards53_{, W. Ehrenfeld}42_{, T. Eifert}143_{, G. Eigen}14_{, K. Einsweiler}15_{, E. Eisenhandler}75_{, T. Ekelof}166_,

M. El Kacimi135c_{, M. Ellert}166_{, S. Elles}5_{, F. Ellinghaus}81_{, K. Ellis}75_{, N. Ellis}30_{, J. Elmsheuser}98_{, M. Elsing}30_,

D. Emeliyanov129_{, R. Engelmann}148_{, A. Engl}98_{, B. Epp}61_{, J. Erdmann}176_{, A. Ereditato}17_{, D. Eriksson}146a_,

J. Ernst2_{, M. Ernst}25_{, J. Ernwein}136_{, D. Errede}165_{, S. Errede}165_{, E. Ertel}81_{, M. Escalier}115_{, H. Esch}43_,

C. Escobar123_{, X. Espinal Curull}12_{, B. Esposito}47_{, F. Etienne}83_{, A.I. Etienvre}136_{, E. Etzion}153_,

D. Evangelakou54_{, H. Evans}60_{, L. Fabbri}20a,20b_{, C. Fabre}30_{, R.M. Fakhrutdinov}128_{, S. Falciano}132a_{, Y. Fang}33a_,

M. Fanti89a,89b_{, A. Farbin}8_{, A. Farilla}134a_{, J. Farley}148_{, T. Farooque}158_{, S. Farrell}163_{, S.M. Farrington}170_,

P. Farthouat30_{, F. Fassi}167_{, P. Fassnacht}30_{, D. Fassouliotis}9_{, B. Fatholahzadeh}158_{, A. Favareto}89a,89b_,

L. Fayard115_{, P. Federic}144a_{, O.L. Fedin}121_{, W. Fedorko}88_{, M. Fehling-Kaschek}48_{, L. Feligioni}83_{, C. Feng}33d_,

E.J. Feng6_{, A.B. Fenyuk}128_{, J. Ferencei}144b_{, W. Fernando}6_{, S. Ferrag}53_{, J. Ferrando}53_{, V. Ferrara}42_,

A. Ferrari166_{, P. Ferrari}105_{, R. Ferrari}119a_{, D.E. Ferreira de Lima}53_{, A. Ferrer}167_{, D. Ferrere}49_{, C. Ferretti}87_,

A. Ferretto Parodi50a,50b_{, M. Fiascaris}31_{, F. Fiedler}81_{, A. Filipˇciˇc}74_{, F. Filthaut}104_{, M. Fincke-Keeler}169_,

M.C.N. Fiolhais124a,i_{, L. Fiorini}167_{, A. Firan}40_{, G. Fischer}42_{, M.J. Fisher}109_{, M. Flechl}48_{, I. Fleck}141_,

J. Fleckner81_{, P. Fleischmann}174_{, S. Fleischmann}175_{, T. Flick}175_{, A. Floderus}79_{, L.R. Flores Castillo}173_,

A.C. Florez Bustos159b_{, M.J. Flowerdew}99_{, T. Fonseca Martin}17_{, A. Formica}136_{, A. Forti}82_{, D. Fortin}159a_,

D. Fournier115, A.J. Fowler45, H. Fox71, P. Francavilla12, M. Franchini20a,20b, S. Franchino119a,119b, D. Francis30, T. Frank172_{, M. Franklin}57_{, S. Franz}30_{, M. Fraternali}119a,119b_{, S. Fratina}120_{, S.T. French}28_{, C. Friedrich}42_,

F. Friedrich44_{, D. Froidevaux}30_{, J.A. Frost}28_{, C. Fukunaga}156_{, E. Fullana Torregrosa}127_{, B.G. Fulsom}143_,

J. Fuster167_{, C. Gabaldon}30_{, O. Gabizon}172_{, T. Gadfort}25_{, S. Gadomski}49_{, G. Gagliardi}50a,50b_{, P. Gagnon}60_,

C. Galea98_{, B. Galhardo}124a_{, E.J. Gallas}118_{, V. Gallo}17_{, B.J. Gallop}129_{, P. Gallus}125_{, K.K. Gan}109_,

Y.S. Gao143,g_{, A. Gaponenko}15_{, F. Garberson}176_{, M. Garcia-Sciveres}15_{, C. Garc´ıa}167_{, J.E. Garc´ıa Navarro}167_,

R.W. Gardner31_{, N. Garelli}30_{, V. Garonne}30_{, C. Gatti}47_{, G. Gaudio}119a_{, B. Gaur}141_{, L. Gauthier}136_,

P. Gauzzi132a,132b_{, I.L. Gavrilenko}94_{, C. Gay}168_{, G. Gaycken}21_{, E.N. Gazis}10_{, P. Ge}33d_{, Z. Gecse}168_,

C.N.P. Gee129_{, D.A.A. Geerts}105_{, Ch. Geich-Gimbel}21_{, K. Gellerstedt}146a,146b_{, C. Gemme}50a_{, A. Gemmell}53_,

M.H. Genest55_{, S. Gentile}132a,132b_{, M. George}54_{, S. George}76_{, D. Gerbaudo}12_{, P. Gerlach}175_{, A. Gershon}153_,

C. Geweniger58a_{, H. Ghazlane}135b_{, N. Ghodbane}34_{, B. Giacobbe}20a_{, S. Giagu}132a,132b_{, V. Giangiobbe}12_,

F. Gianotti30_{, B. Gibbard}25_{, A. Gibson}158_{, S.M. Gibson}30_{, M. Gilchriese}15_{, D. Gillberg}29_{, A.R. Gillman}129_,

D.M. Gingrich3,f_{, J. Ginzburg}153_{, N. Giokaris}9_{, M.P. Giordani}164c_{, R. Giordano}102a,102b_{, F.M. Giorgi}16_,

P. Giovannini99, P.F. Giraud136, D. Giugni89a, M. Giunta93, B.K. Gjelsten117, L.K. Gladilin97, C. Glasman80, J. Glatzer21_{, A. Glazov}42_{, K.W. Glitza}175_{, G.L. Glonti}64_{, J.R. Goddard}75_{, J. Godfrey}142_{, J. Godlewski}30_,

M. Goebel42_{, T. G¨opfert}44_{, C. Goeringer}81_{, C. G¨ossling}43_{, S. Goldfarb}87_{, T. Golling}176_{, D. Golubkov}128_,

A. Gomes124a,c, L.S. Gomez Fajardo42, R. Gon¸calo76, J. Goncalves Pinto Firmino Da Costa42, L. Gonella21, S. Gonz´alez de la Hoz167_{, G. Gonzalez Parra}12_{, M.L. Gonzalez Silva}27_{, S. Gonzalez-Sevilla}49_{, J.J. Goodson}148_,

L. Goossens30_{, P.A. Gorbounov}95_{, H.A. Gordon}25_{, I. Gorelov}103_{, G. Gorfine}175_{, B. Gorini}30_{, E. Gorini}72a,72b_,

A. Goriˇsek74_{, E. Gornicki}39_{, A.T. Goshaw}6_{, M. Gosselink}105_{, M.I. Gostkin}64_{, I. Gough Eschrich}163_,

M. Gouighri135a_{, D. Goujdami}135c_{, M.P. Goulette}49_{, A.G. Goussiou}138_{, C. Goy}5_{, S. Gozpinar}23_,

I. Grabowska-Bold38_{, P. Grafstr¨om}20a,20b_{, K-J. Grahn}42_{, E. Gramstad}117_{, F. Grancagnolo}72a_{, S. Grancagnolo}16_,

V. Grassi148, V. Gratchev121, H.M. Gray30, J.A. Gray148, E. Graziani134a, O.G. Grebenyuk121, T. Greenshaw73, Z.D. Greenwood25,n_{, K. Gregersen}36_{, I.M. Gregor}42_{, P. Grenier}143_{, J. Griffiths}8_{, N. Grigalashvili}64_,

A.A. Grillo137_{, K. Grimm}71_{, S. Grinstein}12_{, Ph. Gris}34_{, Y.V. Grishkevich}97_{, J.-F. Grivaz}115_{, A. Grohsjean}42_,

E. Gross172_{, J. Grosse-Knetter}54_{, J. Groth-Jensen}172_{, K. Grybel}141_{, D. Guest}176_{, C. Guicheney}34_,

E. Guido50a,50b_{, S. Guindon}54_{, U. Gul}53_{, J. Gunther}125_{, B. Guo}158_{, J. Guo}35_{, P. Gutierrez}111_{, N. Guttman}153_,

O. Gutzwiller173_{, C. Guyot}136_{, C. Gwenlan}118_{, C.B. Gwilliam}73_{, A. Haas}108_{, S. Haas}30_{, C. Haber}15_,

H.K. Hadavand8_{, D.R. Hadley}18_{, P. Haefner}21_{, F. Hahn}30_{, Z. Hajduk}39_{, H. Hakobyan}177_{, D. Hall}118_,

K. Hamacher175_{, P. Hamal}113_{, K. Hamano}86_{, M. Hamer}54_{, A. Hamilton}145b,q_{, S. Hamilton}161_{, L. Han}33b_,

K. Hanagaki116_{, K. Hanawa}160_{, M. Hance}15_{, C. Handel}81_{, P. Hanke}58a_{, J.R. Hansen}36_{, J.B. Hansen}36_,

J.D. Hansen36_{, P.H. Hansen}36_{, P. Hansson}143_{, K. Hara}160_{, T. Harenberg}175_{, S. Harkusha}90_{, D. Harper}87_,

R.D. Harrington46_{, O.M. Harris}138_{, J. Hartert}48_{, F. Hartjes}105_{, T. Haruyama}65_{, A. Harvey}56_{, S. Hasegawa}101_,

R.J. Hawkings30_{, A.D. Hawkins}79_{, T. Hayakawa}66_{, T. Hayashi}160_{, D. Hayden}76_{, C.P. Hays}118_{, H.S. Hayward}73_,

S.J. Haywood129_{, S.J. Head}18_{, V. Hedberg}79_{, L. Heelan}8_{, S. Heim}120_{, B. Heinemann}15_{, S. Heisterkamp}36_,

L. Helary22_{, C. Heller}98_{, M. Heller}30_{, S. Hellman}146a,146b_{, D. Hellmich}21_{, C. Helsens}12_{, R.C.W. Henderson}71_,

M. Henke58a_{, A. Henrichs}176_{, A.M. Henriques Correia}30_{, S. Henrot-Versille}115_{, C. Hensel}54_{, C.M. Hernandez}8_,

Y. Hern´andez Jim´enez167_{, R. Herrberg}16_{, G. Herten}48_{, R. Hertenberger}98_{, L. Hervas}30_{, G.G. Hesketh}77_,

N.P. Hessey105_{, E. Hig´on-Rodriguez}167_{, J.C. Hill}28_{, K.H. Hiller}42_{, S. Hillert}21_{, S.J. Hillier}18_{, I. Hinchliffe}15_,

E. Hines120_{, M. Hirose}116_{, F. Hirsch}43_{, D. Hirschbuehl}175_{, J. Hobbs}148_{, N. Hod}153_{, M.C. Hodgkinson}139_,

P. Hodgson139_{, A. Hoecker}30_{, M.R. Hoeferkamp}103_{, J. Hoffman}40_{, D. Hoffmann}83_{, M. Hohlfeld}81_{, M. Holder}141_,

S.O. Holmgren146a_{, T. Holy}126_{, J.L. Holzbauer}88_{, T.M. Hong}120_{, L. Hooft van Huysduynen}108_{, S. Horner}48_,

J-Y. Hostachy55_{, S. Hou}151_{, A. Hoummada}135a_{, J. Howard}118_{, J. Howarth}82_{, I. Hristova}16_{, J. Hrivnac}115_,

T. Hryn’ova5_{, P.J. Hsu}81_{, S.-C. Hsu}138_{, D. Hu}35_{, Z. Hubacek}30_{, F. Hubaut}83_{, F. Huegging}21_{, A. Huettmann}42_,

T.B. Huffman118_{, E.W. Hughes}35_{, G. Hughes}71_{, M. Huhtinen}30_{, M. Hurwitz}15_{, N. Huseynov}64,r_{, J. Huston}88_,

J. Huth57_{, G. Iacobucci}49_{, G. Iakovidis}10_{, M. Ibbotson}82_{, I. Ibragimov}141_{, L. Iconomidou-Fayard}115_,

J. Idarraga115_{, P. Iengo}102a_{, O. Igonkina}105_{, Y. Ikegami}65_{, M. Ikeno}65_{, D. Iliadis}154_{, N. Ilic}158_{, T. Ince}99_,

P. Ioannou9_{, M. Iodice}134a_{, K. Iordanidou}9_{, V. Ippolito}132a,132b_{, A. Irles Quiles}167_{, C. Isaksson}166_{, M. Ishino}67_,

M. Ishitsuka157_{, R. Ishmukhametov}109_{, C. Issever}118_{, S. Istin}19a_{, A.V. Ivashin}128_{, W. Iwanski}39_{, H. Iwasaki}65_,

J.M. Izen41_{, V. Izzo}102a_{, B. Jackson}120_{, J.N. Jackson}73_{, P. Jackson}1_{, M.R. Jaekel}30_{, V. Jain}2_{, K. Jakobs}48_,

S. Jakobsen36_{, T. Jakoubek}125_{, J. Jakubek}126_{, D.O. Jamin}151_{, D.K. Jana}111_{, E. Jansen}77_{, H. Jansen}30_,

J. Janssen21_{, A. Jantsch}99_{, M. Janus}48_{, R.C. Jared}173_{, G. Jarlskog}79_{, L. Jeanty}57_{, I. Jen-La Plante}31_,

G.-Y. Jeng150, D. Jennens86, P. Jenni30, A.E. Loevschall-Jensen36, P. Jeˇz36, S. J´ez´equel5, M.K. Jha20a, H. Ji173, W. Ji81_{, J. Jia}148_{, Y. Jiang}33b_{, M. Jimenez Belenguer}42_{, S. Jin}33a_{, O. Jinnouchi}157_{, M.D. Joergensen}36_,

D. Joffe40_{, M. Johansen}146a,146b_{, K.E. Johansson}146a_{, P. Johansson}139_{, S. Johnert}42_{, K.A. Johns}7_,

K. Jon-And146a,146b_{, G. Jones}170_{, R.W.L. Jones}71_{, T.J. Jones}73_{, C. Joram}30_{, P.M. Jorge}124a_{, K.D. Joshi}82_,

J. Jovicevic147_{, T. Jovin}13b_{, X. Ju}173_{, C.A. Jung}43_{, R.M. Jungst}30_{, V. Juranek}125_{, P. Jussel}61_{, A. Juste Rozas}12_,

S. Kabana17_{, M. Kaci}167_{, A. Kaczmarska}39_{, P. Kadlecik}36_{, M. Kado}115_{, H. Kagan}109_{, M. Kagan}57_,

E. Kajomovitz152_{, S. Kalinin}175_{, L.V. Kalinovskaya}64_{, S. Kama}40_{, N. Kanaya}155_{, M. Kaneda}30_{, S. Kaneti}28_,

T. Kanno157_{, V.A. Kantserov}96_{, J. Kanzaki}65_{, B. Kaplan}108_{, A. Kapliy}31_{, D. Kar}53_{, M. Karagounis}21_,

K. Karakostas10_{, M. Karnevskiy}58b_{, V. Kartvelishvili}71_{, A.N. Karyukhin}128_{, L. Kashif}173_{, G. Kasieczka}58b_,

R.D. Kass109_{, A. Kastanas}14_{, M. Kataoka}5_{, Y. Kataoka}155_{, J. Katzy}42_{, V. Kaushik}7_{, K. Kawagoe}69_,

T. Kawamoto155_{, G. Kawamura}81_{, M.S. Kayl}105_{, S. Kazama}155_{, V.F. Kazanin}107_{, M.Y. Kazarinov}64_,

R. Keeler169_{, P.T. Keener}120_{, R. Kehoe}40_{, M. Keil}54_{, G.D. Kekelidze}64_{, J.S. Keller}138_{, M. Kenyon}53_,

O. Kepka125_{, N. Kerschen}30_{, B.P. Kerˇsevan}74_{, S. Kersten}175_{, K. Kessoku}155_{, J. Keung}158_{, F. Khalil-zada}11_,

H. Khandanyan146a,146b, A. Khanov112, D. Kharchenko64, A. Khodinov96, A. Khomich58a, T.J. Khoo28,

G. Khoriauli21_{, A. Khoroshilov}175_{, V. Khovanskiy}95_{, E. Khramov}64_{, J. Khubua}51b_{, H. Kim}146a,146b_{, S.H. Kim}160_,

N. Kimura171_{, O. Kind}16_{, B.T. King}73_{, M. King}66_{, R.S.B. King}118_{, J. Kirk}129_{, A.E. Kiryunin}99_{, T. Kishimoto}66_,

D. Kisielewska38, T. Kitamura66, T. Kittelmann123, K. Kiuchi160, E. Kladiva144b, M. Klein73, U. Klein73, K. Kleinknecht81_{, M. Klemetti}85_{, A. Klier}172_{, P. Klimek}146a,146b_{, A. Klimentov}25_{, R. Klingenberg}43_,

J.A. Klinger82_{, E.B. Klinkby}36_{, T. Klioutchnikova}30_{, P.F. Klok}104_{, S. Klous}105_{, E.-E. Kluge}58a_{, T. Kluge}73_,

P. Kluit105_{, S. Kluth}99_{, E. Kneringer}61_{, E.B.F.G. Knoops}83_{, A. Knue}54_{, B.R. Ko}45_{, T. Kobayashi}155_,

M. Kobel44_{, M. Kocian}143_{, P. Kodys}127_{, K. K¨oneke}30_{, A.C. K¨onig}104_{, S. Koenig}81_{, L. K¨opke}81_{, F. Koetsveld}104_,

P. Koevesarki21_{, T. Koffas}29_{, E. Koffeman}105_{, L.A. Kogan}118_{, S. Kohlmann}175_{, F. Kohn}54_{, Z. Kohout}126_,

T. Kohriki65, T. Koi143, G.M. Kolachev107,∗, H. Kolanoski16, V. Kolesnikov64, I. Koletsou89a, J. Koll88,

A.A. Komar94_{, Y. Komori}155_{, T. Kondo}65_{, T. Kono}42,s_{, A.I. Kononov}48_{, R. Konoplich}108,t_{, N. Konstantinidis}77_,

R. Kopeliansky152_{, S. Koperny}38_{, K. Korcyl}39_{, K. Kordas}154_{, A. Korn}118_{, A. Korol}107_{, I. Korolkov}12_,

E.V. Korolkova139_{, V.A. Korotkov}128_{, O. Kortner}99_{, S. Kortner}99_{, V.V. Kostyukhin}21_{, S. Kotov}99_,

V.M. Kotov64_{, A. Kotwal}45_{, C. Kourkoumelis}9_{, V. Kouskoura}154_{, A. Koutsman}159a_{, R. Kowalewski}169_,

T.Z. Kowalski38_{, W. Kozanecki}136_{, A.S. Kozhin}128_{, V. Kral}126_{, V.A. Kramarenko}97_{, G. Kramberger}74_,

M.W. Krasny78_{, A. Krasznahorkay}108_{, J.K. Kraus}21_{, A. Kravchenko}25_{, S. Kreiss}108_{, F. Krejci}126_,

J. Kretzschmar73_{, K. Kreutzfeldt}52_{, N. Krieger}54_{, P. Krieger}158_{, K. Kroeninger}54_{, H. Kroha}99_{, J. Kroll}120_,

J. Kroseberg21_{, J. Krstic}13a_{, U. Kruchonak}64_{, H. Kr¨uger}21_{, T. Kruker}17_{, N. Krumnack}63_{, Z.V. Krumshteyn}64_,

M.K. Kruse45_{, T. Kubota}86_{, S. Kuday}4a_{, S. Kuehn}48_{, A. Kugel}58c_{, T. Kuhl}42_{, D. Kuhn}61_{, V. Kukhtin}64_,

Y. Kulchitsky90_{, S. Kuleshov}32b_{, C. Kummer}98_{, M. Kuna}78_{, J. Kunkle}120_{, A. Kupco}125_{, H. Kurashige}66_,

A. La Rosa49_{, L. La Rotonda}37a,37b_{, L. Labarga}80_{, S. Lablak}135a_{, C. Lacasta}167_{, F. Lacava}132a,132b_{, J. Lacey}29_,

H. Lacker16_{, D. Lacour}78_{, V.R. Lacuesta}167_{, E. Ladygin}64_{, R. Lafaye}5_{, B. Laforge}78_{, T. Lagouri}176_{, S. Lai}48_,

E. Laisne55_{, L. Lambourne}77_{, C.L. Lampen}7_{, W. Lampl}7_{, E. Lancon}136_{, U. Landgraf}48_{, M.P.J. Landon}75_,

V.S. Lang58a_{, C. Lange}42_{, A.J. Lankford}163_{, F. Lanni}25_{, K. Lantzsch}30_{, A. Lanza}119a_{, S. Laplace}78_{, C. Lapoire}21_,

J.F. Laporte136_{, T. Lari}89a_{, A. Larner}118_{, M. Lassnig}30_{, P. Laurelli}47_{, V. Lavorini}37a,37b_{, W. Lavrijsen}15_,

P. Laycock73_{, O. Le Dortz}78_{, E. Le Guirriec}83_{, E. Le Menedeu}12_{, T. LeCompte}6_{, F. Ledroit-Guillon}55_{, H. Lee}105_,

J.S.H. Lee116_{, S.C. Lee}151_{, L. Lee}176_{, M. Lefebvre}169_{, M. Legendre}136_{, F. Legger}98_{, C. Leggett}15_,

M. Lehmacher21_{, G. Lehmann Miotto}30_{, A.G. Leister}176_{, M.A.L. Leite}24d_{, R. Leitner}127_{, D. Lellouch}172_,

B. Lemmer54_{, V. Lendermann}58a_{, K.J.C. Leney}145b_{, T. Lenz}105_{, G. Lenzen}175_{, B. Lenzi}30_{, K. Leonhardt}44_,

S. Leontsinis10_{, F. Lepold}58a_{, C. Leroy}93_{, J-R. Lessard}169_{, C.G. Lester}28_{, C.M. Lester}120_{, J. Levˆeque}5_,

D. Levin87_{, L.J. Levinson}172_{, A. Lewis}118_{, G.H. Lewis}108_{, A.M. Leyko}21_{, M. Leyton}16_{, B. Li}33b_{, B. Li}83_{, H. Li}148_,

H.L. Li31_{, S. Li}33b,u_{, X. Li}87_{, Z. Liang}118,v_{, H. Liao}34_{, B. Liberti}133a_{, P. Lichard}30_{, M. Lichtnecker}98_{, K. Lie}165_,

W. Liebig14_{, C. Limbach}21_{, A. Limosani}86_{, M. Limper}62_{, S.C. Lin}151,w_{, F. Linde}105_{, J.T. Linnemann}88_,

E. Lipeles120_{, A. Lipniacka}14_{, T.M. Liss}165_{, D. Lissauer}25_{, A. Lister}49_{, A.M. Litke}137_{, C. Liu}29_{, D. Liu}151_,

J.B. Liu33b_{, L. Liu}87_{, M. Liu}33b_{, Y. Liu}33b_{, M. Livan}119a,119b_{, S.S.A. Livermore}118_{, A. Lleres}55_,

J. Llorente Merino80_{, S.L. Lloyd}75_{, E. Lobodzinska}42_{, P. Loch}7_{, W.S. Lockman}137_{, T. Loddenkoetter}21_,

F.K. Loebinger82_{, A. Loginov}176_{, C.W. Loh}168_{, T. Lohse}16_{, K. Lohwasser}48_{, M. Lokajicek}125_{, V.P. Lombardo}5_,

R.E. Long71_{, L. Lopes}124a_{, D. Lopez Mateos}57_{, J. Lorenz}98_{, N. Lorenzo Martinez}115_{, M. Losada}162_,

P. Loscutoff15_{, F. Lo Sterzo}132a,132b_{, M.J. Losty}159a,∗_{, X. Lou}41_{, A. Lounis}115_{, K.F. Loureiro}162_{, J. Love}6_,

P.A. Love71, A.J. Lowe143,g, F. Lu33a, H.J. Lubatti138, C. Luci132a,132b, A. Lucotte55, D. Ludwig42, I. Ludwig48, J. Ludwig48_{, F. Luehring}60_{, G. Luijckx}105_{, W. Lukas}61_{, L. Luminari}132a_{, E. Lund}117_{, B. Lund-Jensen}147_,

B. Lundberg79_{, J. Lundberg}146a,146b_{, O. Lundberg}146a,146b_{, J. Lundquist}36_{, M. Lungwitz}81_{, D. Lynn}25_,

E. Lytken79_{, H. Ma}25_{, L.L. Ma}173_{, G. Maccarrone}47_{, A. Macchiolo}99_{, B. Maˇcek}74_{, J. Machado Miguens}124a_,

D. Macina30_{, R. Mackeprang}36_{, R.J. Madaras}15_{, H.J. Maddocks}71_{, W.F. Mader}44_{, R. Maenner}58c_{, T. Maeno}25_,

P. M¨attig175_{, S. M¨attig}42_{, L. Magnoni}163_{, E. Magradze}54_{, K. Mahboubi}48_{, J. Mahlstedt}105_{, S. Mahmoud}73_,

G. Mahout18_{, C. Maiani}136_{, C. Maidantchik}24a_{, A. Maio}124a,c_{, S. Majewski}25_{, Y. Makida}65_{, N. Makovec}115_,

P. Mal136_{, B. Malaescu}30_{, Pa. Malecki}39_{, P. Malecki}39_{, V.P. Maleev}121_{, F. Malek}55_{, U. Mallik}62_{, D. Malon}6_,

C. Malone143_{, S. Maltezos}10_{, V. Malyshev}107_{, S. Malyukov}30_{, J. Mamuzic}13b_{, A. Manabe}65_{, L. Mandelli}89a_,

I. Mandi´c74_{, R. Mandrysch}62_{, J. Maneira}124a_{, A. Manfredini}99_{, L. Manhaes de Andrade Filho}24b_,

J.A. Manjarres Ramos136_{, A. Mann}98_{, P.M. Manning}137_{, A. Manousakis-Katsikakis}9_{, B. Mansoulie}136_,

R. Mantifel85_{, A. Mapelli}30_{, L. Mapelli}30_{, L. March}167_{, J.F. Marchand}29_{, F. Marchese}133a,133b_{, G. Marchiori}78_,

M. Marcisovsky125_{, C.P. Marino}169_{, F. Marroquim}24a_{, Z. Marshall}30_{, L.F. Marti}17_{, S. Marti-Garcia}167_,

B. Martin30, B. Martin88, J.P. Martin93, T.A. Martin18, V.J. Martin46, B. Martin dit Latour49,

S. Martin-Haugh149_{, H. Martinez}136_{, M. Martinez}12_{, V. Martinez Outschoorn}57_{, A.C. Martyniuk}169_{, M. Marx}82_,

F. Marzano132a_{, A. Marzin}111_{, L. Masetti}81_{, T. Mashimo}155_{, R. Mashinistov}94_{, J. Masik}82_{, A.L. Maslennikov}107_,

I. Massa20a,20b, G. Massaro105, N. Massol5, P. Mastrandrea148, A. Mastroberardino37a,37b, T. Masubuchi155, H. Matsunaga155_{, T. Matsushita}66_{, C. Mattravers}118,d_{, J. Maurer}83_{, S.J. Maxfield}73_{, D.A. Maximov}107,h_,

A. Mayne139_{, R. Mazini}151_{, M. Mazur}21_{, L. Mazzaferro}133a,133b_{, M. Mazzanti}89a_{, J. Mc Donald}85_{, S.P. Mc Kee}87_,

A. McCarn165_{, R.L. McCarthy}148_{, T.G. McCarthy}29_{, N.A. McCubbin}129_{, K.W. McFarlane}56,∗_{, J.A. Mcfayden}139_,

G. Mchedlidze51b_{, T. Mclaughlan}18_{, S.J. McMahon}129_{, R.A. McPherson}169,l_{, A. Meade}84_{, J. Mechnich}105_,

M. Mechtel175_{, M. Medinnis}42_{, S. Meehan}31_{, R. Meera-Lebbai}111_{, T. Meguro}116_{, S. Mehlhase}36_{, A. Mehta}73_,

K. Meier58a, B. Meirose79, C. Melachrinos31, B.R. Mellado Garcia173, F. Meloni89a,89b, L. Mendoza Navas162, Z. Meng151,x_{, A. Mengarelli}20a,20b_{, S. Menke}99_{, E. Meoni}161_{, K.M. Mercurio}57_{, P. Mermod}49_{, L. Merola}102a,102b_,

C. Meroni89a_{, F.S. Merritt}31_{, H. Merritt}109_{, A. Messina}30,y_{, J. Metcalfe}25_{, A.S. Mete}163_{, C. Meyer}81_{, C. Meyer}31_,

J-P. Meyer136_{, J. Meyer}174_{, J. Meyer}54_{, S. Michal}30_{, L. Micu}26a_{, R.P. Middleton}129_{, S. Migas}73_{, L. Mijovi´c}136_,

G. Mikenberg172_{, M. Mikestikova}125_{, M. Mikuˇz}74_{, D.W. Miller}31_{, R.J. Miller}88_{, W.J. Mills}168_{, C. Mills}57_,

A. Milov172_{, D.A. Milstead}146a,146b_{, D. Milstein}172_{, A.A. Minaenko}128_{, M. Mi˜nano Moya}167_{, I.A. Minashvili}64_,

A.I. Mincer108_{, B. Mindur}38_{, M. Mineev}64_{, Y. Ming}173_{, L.M. Mir}12_{, G. Mirabelli}132a_{, J. Mitrevski}137_,

V.A. Mitsou167_{, S. Mitsui}65_{, P.S. Miyagawa}139_{, J.U. Mj¨ornmark}79_{, T. Moa}146a,146b_{, V. Moeller}28_{, K. M¨onig}42_,

N. M¨oser21_{, S. Mohapatra}148_{, W. Mohr}48_{, R. Moles-Valls}167_{, A. Molfetas}30_{, J. Monk}77_{, E. Monnier}83_,

J. Montejo Berlingen12_{, F. Monticelli}70_{, S. Monzani}20a,20b_{, R.W. Moore}3_{, G.F. Moorhead}86_{, C. Mora Herrera}49_,

A. Moraes53_{, N. Morange}136_{, J. Morel}54_{, G. Morello}37a,37b_{, D. Moreno}81_{, M. Moreno Ll´acer}167_{, P. Morettini}50a_,