Search for Scalar Charm Quark Pair Production in $pp$ Collisions at $\sqrt{s}=$ 8  TeV with the ATLAS Detector

EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)

CERN-PH-EP-2014-292

Submitted to: Phys. Rev. Lett.

Search for Scalar Charm Quark Pair Production in

pp

Collisions

at

√

s =

8 TeV with the ATLAS Detector

The ATLAS Collaboration

Abstract

The results of a dedicated search for pair production of scalar partners of charm quarks are

re-ported. The search is based on an integrated luminosity of 20.3 fb

−1

of pp collisions at

√

s = 8

TeV

recorded with the ATLAS detector at the LHC. The search is performed using events with large missing

transverse momentum and at least two jets, where the two leading jets are each tagged as originating

from c quarks. Events containing isolated electrons or muons are vetoed. In an R-parity-conserving

minimal supersymmetric scenario in which a single scalar-charm state is kinematically accessible,

and where it decays exclusively into a charm quark and a neutralino, 95% confidence-level upper

limits are obtained in the scalar-charm–neutralino mass plane such that, for neutralino masses below

200 GeV, scalar-charm masses up to 490 GeV are excluded.

c

2015 CERN for the benefit of the ATLAS Collaboration.

Reproduction of this article or parts of it is allowed as specified in the CC-BY-3.0 license.

Search for Scalar Charm Quark Pair Production in pp Collisions at

√

s = 8 TeV with

the ATLAS Detector

The ATLAS Collaboration

The results of a dedicated search for pair production of scalar partners of charm quarks are reported. The search is based on an integrated luminosity of 20.3 fb−1of pp collisions at√s = 8 TeV recorded with the ATLAS detector at the LHC. The search is performed using events with large missing transverse momentum and at least two jets, where the two leading jets are each tagged as originating from c quarks. Events containing isolated electrons or muons are vetoed. In an R-parity-conserving minimal supersymmetric scenario in which a single scalar-charm state is kinematically accessible, and where it decays exclusively into a charm quark and a neutralino, 95% confidence-level upper limits are obtained in the scalar-charm–neutralino mass plane such that, for neutralino masses below 200 GeV, scalar-charm masses up to 490 GeV are excluded.

PACS numbers: 14.80.Ly,13.85.Rm

Supersymmetry (SUSY) [1–9] is a theory that extends the Standard Model (SM) and naturally resolves the hi-erarchy problem by introducing supersymmetric partners of the known bosons and fermions. In the framework of a generic R-parity-conserving minimal supersymmetric ex-tension of the SM, the MSSM [10–14], SUSY particles are produced in pairs and the lightest supersymmetric particle (LSP) is stable, providing a possible candidate for dark matter. In a large variety of models, the LSP is the lightest neutralino, ˜χ01.

The scalar partners (squarks) of various flavors of quarks may, rather generally, have different masses de-spite constraints on quark flavor mixing [15]. Recent searches disfavor low-mass top squarks (stops), sbottoms, and gluinos, so direct scalar-charm (˜c) pair production could be the only squark production process accessible at the LHC. Searches for ˜c states provide not only a possible supersymmetry discovery mode but also the potential to probe the flavor structure of the underlying theory.

Since no dedicated search for ˜c has previously been performed, the best existing lower limits on ˜c masses are obtained from searches for generic squark and gluino pro-duction at the LHC [16, 17], and from the reinterpreta-tion of LHC searches [18] for direct pair production of the scalar partner of the top quark followed by decays ˜

t1 → c + ˜χ 0

1. The top squark searches have a final state

similar to that expected for scalar charm quarks, but are optimized for small mt˜− mχ˜0₁ mass differences, and

so have good sensitivity to the scalar charm quark only when m˜c− mχ˜0₁ < m_∼ W.

In this Letter, a dedicated search for direct ˜c pair pro-duction is presented. The scalar charm quark is assumed to decay dominantly or exclusively via ˜c → c + ˜χ0₁. The expected signal is therefore characterized by the pres-ence of two jets originating from the hadronization of the c quarks, accompanied by missing transverse momentum (Emiss

T ) resulting from the undetected neutralinos.

The ATLAS detector is described in detail else-where [19]. This search uses pp collision data at a

center-of-mass energy of 8 TeV recorded during 2012 at the LHC. After the application of beam, detector and data quality requirements, the data set corresponds to a total inte-grated luminosity of 20.3 fb−1 with a 2.8% uncertainty, using the methods of Ref. [20].

The data are selected with a three-level trigger sys-tem that required a high transverse momentum (pT) jet

and Emiss

T [21]. While events containing charged

lep-tons (electrons or muons) in the search region are ve-toed, single-lepton triggers are used for control regions. Events are required to have a reconstructed primary ver-tex consistent with the beam positions, and to meet basic quality criteria that suppress detector noise and noncolli-sion backgrounds [22]. Jets are reconstructed from three-dimensional topological calorimeter energy clusters by using the anti-kt jet algorithm [23,24] with a radius

pa-rameter of 0.4. The measured jet energy is corrected for inhomogeneities and for the noncompensating response of the calorimeter by using pT- and η-dependent [25]

cor-rection factors [26]. The impact of multiple overlapping pp interactions (pileup) is accounted for using a tech-nique, based on jet areas, that provides an event-by-event and jet-by-jet correction [27]. Only jet candidates with pT> 20 GeV within |η| < 2.8 are retained.

Electron candidates are required to have pT> 7 GeV,

|η| < 2.47 and to satisfy “medium” selection criteria [28]. Muon candidates are required to have pT > 6 GeV,

|η| < 2.4 and are identified by matching an extrapo-lated inner-detector track to one or more track segments in the muon spectrometer [29]. When defining lepton control regions, muons and electrons must meet addi-tional “tight” selection criteria [29,30], and must satisfy track and calorimeter isolation criteria similar to those in Ref. [31].

Following this object reconstruction, overlaps between jet candidates and electrons or muons are resolved. Any jet within a distance ∆R = 0.2 of a medium quality electron candidate is discarded. Any remaining lepton within ∆R = 0.4 of a jet is discarded. Remaining muons

must have longitudinal and transverse impact parame-ters within 1 mm and 0.2 mm of the primary vertex, respectively.

The calculation of Emiss

T is based on the vector sum

of the calibrated pT of reconstructed jets (with pT >

20 GeV and |η| < 4.5), electrons, muons and photons, and the calorimeter energy clusters not belonging to these reconstructed objects [32].

Jets containing c-flavored hadrons without b-flavored parent hadrons are identified using an algorithm, op-timized for charm tagging, based on a neural network that exploits both impact parameter and secondary ver-tex information and with a B to D decay chain verver-tex fitter [33]. This algorithm achieves a tagging efficiency of 19% (13%, 0.5%) for c-jets (b-jets, light-flavor or gluon jets) in t¯t events. The efficiency for tagging b-jets is de-termined from measurements of dileptonic t¯t events [34]. The c-jet tagging efficiency and its uncertainty have been calibrated in inclusive jet events over a range of pTusing

jets from collision data containing D∗ mesons [35]. Jets can be c-tagged only within the acceptance of the inner detector (|η| < 2.5), so only such central jets are retained after the above selection.

Events are then required to have Emiss

T > 150 GeV and

one jet with pT > 130 GeV to ensure full trigger

effi-ciency, as well as a second jet with pT> 100 GeV. The

two highest-pTjets are required to be c tagged. The

mul-tijet background contribution with large Emiss

T , caused by

mismeasurement of jet energies in the calorimeters or by neutrino production in heavy-quark decays, is suppressed by requiring a minimum azimuthal separation (∆φmin) of

0.4 between the E_Tmissdirection and any of the three lead-ing jets. To reduce the effect of pileup, the third jet is exempted from this requirement if it has pT < 50 GeV,

|η| < 2.4 and less than half of the sum of its track pT

is associated with tracks matched to the primary vertex. In addition, the ratio of Emiss

T to the scalar sum of the

transverse momenta of the two leading jets is required to be above one-third. Events containing residual elec-tron or muon candidates are vetoed in order to reduce electroweak backgrounds.

After these requirements, the main SM processes con-tributing to the background are top quark pair and single top production, together referred to as top production, as well as associated production of W/Z bosons with light-and heavy-flavor jets, referred to as W +jets light-and Z+jets. A selection based on the boost-corrected contransverse mass mCT[36] is employed to further discriminate

scalar-charm pair from top production. For two identical decays of heavy particles into two visible particles v1and v2, and

into invisible particles, the contransverse mass [37] is de-fined as {[ET(v1) + ET(v2)]2− [pT(v1) − pT(v2)]2}1/2.

The boost correction preserves the expected endpoint in the distribution against boosts caused by initial-state ra-diation. In the case of scalar-charm pair production with ˜

c → c + ˜χ0

1, mCT is expected to have an endpoint at

(m2_c˜− m2 ˜

χ0

1)/m˜c. For t¯t production, if both b-jets are mistagged as c-jets, the mCT built using those two jets

is expected to have a kinematic endpoint at 135 GeV. To maximize the sensitivity across the ˜c– ˜χ0

1 mass

plane, three overlapping signal regions (SR) are de-fined: mCT > 150, 200, and 250 GeV. The remaining

t¯t background after the mCT requirement mostly

com-prises events with one true c-jet from a W decay and a mistagged b-jet from a top quark decay. Events in which a Z boson is produced in association with heavy-flavor jets where the Z boson decays into ν ¯ν also enter the high-mCT regions. The heavy-flavor jets often originate from

a gluon splitting, g → c¯c, which can lead to a small angu-lar separation between the resulting c-jets and therefore a small invariant mass mcc. The remaining t¯t background

is also concentrated at low mcc. Consequently, a final

requirement selects events for which the invariant mass of the two c-tagged jets is larger than 200 GeV.

Simulated-event samples are used to aid the descrip-tion of the background and to model the SUSY signal. Top quark pair and single top production in the s and W t channels are simulated with powheg-1.0 (r2092) [38], while the t channel single top production is simulated us-ing AcerMC 3.8 [39]. A top quark mass of 172.5 GeV is used. The parton shower, fragmentation, and hadroniza-tion are performed with pythia-6.426 [40]. Samples of W +jets, Z+jets, and dibosons (W W , W Z, ZZ) with light and heavy flavor jets are generated with sherpa 1.4 [41], assuming massive b/c quarks. Samples of Zt¯t and W t¯_{t are generated with MadGraph-5.1.3.33 [}42] interfaced to pythia-6.426. The signal samples are gen-erated for a simplified SUSY model with only a sin-gle ˜c state kinematically accessible, and with BR(˜c → c + ˜χ0

1)=100%, using MadGraph-5.1.5.11 interfaced

to pythia-6.427 for the parton shower, fragmentation, and hadronization. Signal cross sections are calculated to next-to-leading order in the strong coupling constant, adding the resummation of soft gluon emission at next-to-leading-logarithm accuracy (NLO+NLL) [43–45]. The uncertainty on each nominal cross section is defined by an envelope of predictions using different PDF sets and factorization and renormalization scales, as described in Ref. [46]. The Monte Carlo (MC) samples are processed through a detector simulation [47_{] based on geant4 [}48]. The effects of pileup are included in the simulation. Ef-ficiency corrections derived from the data are applied to the simulation to correct for lepton efficiency as well as the tagging and mistagging rates.

The main SM process contributing to the background after all signal region selections is Z+jets, followed by W +jets, top quark pair, and single top production. Most t¯t events contributing are t¯t → bb`νqq events, in which either a τ lepton decays hadronically, or an e or µ is out of the geometric acceptance or not reconstructed or identified. Contributions from multijet, diboson, and as-sociated production of t¯t with W, Z are subdominant.

Noncollision backgrounds are found to be negligible. The estimation of the main background processes is carried out by defining a set of three data control regions (CR) that do not overlap with each other or with the sig-nal regions. The CRs are kinematically close to the SRs and each of them is enhanced in one or two of the back-grounds that is dominant in the SRs, while having low expected signal contamination (less than 1%). A statisti-cal model is set up in which the background expectation in the CRs and SRs depends on several parameters of in-terest: the normalizations of the dominant backgrounds, top (t¯t + single top), Z+jets and W +jets, as well as on nuisance parameters including the effect of uncertainties on the jet energy scale (JES) and resolution, calorime-ter resolution for energy cluscalorime-ters not associated with any physics objects, energy scale and resolution of electrons and muons, c-tagging and mistagging rates, pileup, and luminosity. A profile likelihood fit of the background ex-pectation to the data is performed simultaneously in all CRs [49], and from it the background normalizations are extracted. The normalization factors, which are consis-tent with unity within uncertainties, are then applied to the MC expectation in the signal regions.

The first control region is populated largely by t¯t and W +jets. It contains events with exactly one isolated electron or muon with pT above 50 GeV. The leading

two jets, with pT > 130 and 50 GeV respectively, must

be c-tagged. To select events containing W → `ν, the transverse mass of the (`, E_Tmiss) system is required to be between 40 and 100 GeV. The upper bound reduces possible signal contamination from SUSY models that produce leptons in cascade decays. Finally, it is required that Emiss

T > 100 GeV and mCT> 150 GeV. The second

control region is populated by Z → `+<sub>`</sub>− _{events with}

two opposite-sign, same-flavor leptons, where the min-imum pT requirement is 70 GeV for the leading lepton

and 7(6) GeV for the subleading electron (muon). The transverse momenta of the leptons are added vectorially to the ~Emiss

T to mimic the Z → ν ¯ν decay, and the

mod-ulus of the resulting two-vector is required to be larger than 100 GeV. The leading two jets are required to be c-tagged and their pT must each be above 50 GeV. The

invariant mass m`` of the two leptons is required to be

between 75 and 105 GeV (Z-mass interval). A third con-trol region, populated almost exclusively by dileptonic t¯t events, contains events with two opposite-sign, different-flavor leptons, where the leading lepton has pT> 25 GeV

and the subleading lepton pTis above 7(6) GeV for

elec-trons (muons). It is required that Emiss

T > 50 GeV and

m`` > 50 GeV. The leading two jets are required to be

c-tagged and have pT> 50 GeV. In all CRs, events with

additional lepton candidates beyond the required num-ber of signal leptons are vetoed using the same lepton requirements used to veto events in the SRs.

The subdominant background contributions from di-bosons, Zt¯t and W t¯t are estimated by MC simulation.

Finally, the residual multijet background is estimated using a data-driven technique based on the smearing of jets in a low-Emiss

T data sample with jet response

func-tions [50].

The experimental and theoretical uncertainties affect-ing the main backgrounds are correlated between trol and signal regions, and the data observed in con-trol regions constrain the uncertainties on the expected yields in the signal regions. The residual uncertainty due to the theoretical modeling of the top-production back-ground is about 7%. It is evaluated using additional MC samples generated with AcerMC (where initiand finstate radiation parameters are varied) an al-ternative fragmentation model (herwig), an alal-ternative generator (mc@nlo), and by using diagram subtraction rather than diagram removal to account for the inter-ference between t¯t and single top W t-channel produc-tion [51]. After the fit, the residual uncertainties on the W +jets and Z+jets theoretical modeling account for less than 20% of the total uncertainty. The dominant contri-butions to the residual uncertainty on the total back-ground are from c-tagging (∼20%), normalization un-certainties related to the numbers of events in the CRs (10%–20%), and JES (∼10%).

For the SUSY signal processes, theoretical uncertain-ties on the cross section due to the choice of renormaliza-tion and factorizarenormaliza-tion scales and from PDFs are found to be between 14% and 16% for ˜c masses between 100 and 550 GeV. Prior to the fit, the detector-related uncer-tainties with largest impact on the signal event yields are those for c-tagging (typically 15%–30%) and JES (typi-cally 10%–30%).

TableIreports the observed number of events and the SM predictions for each SR. The data are found to be be-low the SM background expectations, but consistent with them given the uncertainties. Figure1 shows the mea-sured mCT and mccdistributions in the mCT> 150 GeV

region compared to the SM predictions. Monte Carlo estimates are shown after the normalizations extracted from the profile likelihood fit are applied. For illustra-tive purposes, the distributions expected for the simpli-fied model with (˜c, ˜χ0

1) masses of (400, 200) GeV and

(550, 50) GeV are also shown.

Since no significant excesses are observed, the results are translated into 95% confidence-level (C.L.) upper lim-its on contributions from non-SM processes using the CL_s prescription [52]. Figure 2 shows the observed and expected exclusion limits at 95% C.L. on the ˜c– ˜χ0 1

mass plane, assuming a single accessible ˜c particle with BR(˜c → c + ˜χ0

1) = 100%. The SR with the best

ex-pected sensitivity at each point in the plot is adopted as the nominal result. In the region where the c-tagged analysis of the ATLAS ˜t → c + ˜χ0

1 search [18] provides a

stronger expected limit, i.e. for m˜c−mχ˜0

1 < m∼ W, that re-sult is used. The region excluded by the ATLAS monojet search described in Ref. [18] is shown separately as a grey

mCT(GeV) >150 >200 >250 Top 7.4 ± 2.7 (7.1) 3.9 ± 1.6 (3.7) 1.6 ± 0.7 (1.5) Z+jets 14 ± 3 (13) 7.7 ± 1.7 (7.0) 4.3 ± 1.2 (3.9) W +jets 7.2 ± 4.5 (7.4) 4.1 ± 2.6 (4.2) 1.9 ± 1.2 (1.9) Multijets 0.3 ± 0.3 0.2 ± 0.2 0.05 ± 0.05 Others 0.5 ± 0.3 0.4 ± 0.3 0.4 ± 0.3 Total 30 ± 6 16 ± 3 8.2 ± 1.9 Data 19 11 4

TABLE I. Expected and observed number of events for an integrated luminosity of 20.3 fb−1 at √s = 8 TeV. Top, Z+jets and W +jets contributions are estimated using the fit described in the text. For comparison, the numbers obtained using MC simulations only are shown in parentheses. The row labeled “Others” reports subdominant electroweak backgrounds estimated from MC simulations. The total uncertainties are also reported.

10-1 1 10 102 Events / 25 GeV ATLAS_p s =8 TeV, 20.3 fb−1 m˜c,˜χ0 1= 400, 200 GeV m˜c,˜χ0 1= 550, 50 GeV Data Z + jets W + jets Top Other 0 100 200 300 400 500

m

CT [GeV] 0.0 0.51.0 1.5 Data / SM 10-1 1 10 Events / 40 GeV ATLAS p s =8 TeV, 20.3 fb−1 Region: mCT>150 m˜c,˜χ0 1= 400, 200 GeV m˜c,˜χ0 1= 550, 50 GeV Data Z + jets W + jets Top Other 0 200 400 600 800 1000

m

cc [GeV] 0.0 0.51.0 1.5 Data / SM

FIG. 1. Distributions of mCT (top) and mcc (bottom), and

their corresponding SM predictions. Signal region selections (mCT> 150 GeV for the mccdistribution) are applied, other

than for the variable plotted. Arrows indicate the SR require-ments on mCT and mcc. In the ratio plots, the grey bands

correspond to the combined MC statistical and experimental systematic uncertainty.

shaded area. Systematic uncertainties, other than in the ˜

c pair-production cross section, are treated as nuisance parameters and correlated when appropriate. For the SUSY scenario considered, the upper limit at 95% C.L. on the scalar-charm mass obtained in the most conserva-tive cross-section hypothesis is 540 GeV for m_χ˜0

1

= 0 (in-creasing to 555 GeV for the central estimate of the signal cross section). Neutralino masses up to 200 GeV are sim-ilarly excluded for m˜c < 490 GeV. This significantly

ex-0 100 200 300 400 500 600

m

˜c

[GeV]

0 100 200 300 400 500

m

˜χ 0 1

[G

eV

]

p s = 8 TeV, 20.3 fb−1

ATLAS

m˜c< m˜χ01 (˜ c→c˜χ 0₁ forb idden )

Direct ˜

c

˜

c

∗

_{, ˜}

_c

_→

_c

_χ

_˜

0 1

, single ˜

c

state

Observed Limit (±1σtheorySUSY)

Expected Limit (±1σexpSM)

Monojet

FIG. 2. Exclusion limits at 95% C.L. in the ˜c– ˜χ01mass plane.

The observed (solid red line) and expected (dashed blue line) limits include all uncertainties except for the theoretical sig-nal cross-section uncertainty (PDF and scale). The band around the expected limits show ±1σ uncertainties. The dot-ted lines around the observed limits represent the results ob-tained when moving the nominal signal cross section up or down by the ±1σ theoretical uncertainty.

tends the results of previous flavor-blind analyses [16,17], which provide no exclusion for mχ˜0

1 > 160 GeV, nor for single light squarks with masses above 440 GeV. The sig-nal regions are used to set limits on the effective cross sections σ_vis of any non-SM processes, including the ef-fects of branching ratios, experimental acceptance, and efficiency, neglecting any possible contamination in the control regions. Values of σ_vislarger than 0.44 fb, 0.36 fb, and 0.23 fb are excluded at 95% C.L. for mCT greater

than 150, 200, and 250 GeV respectively.

In summary, this Letter reports results of a search for scalar-charm pair production in 8 TeV pp collisions at the LHC, based on 20.3 fb−1 of ATLAS data. The selected events have large Emiss

T and two c-tagged jets. The results

and translate into 95% C.L. upper limits on scalar-charm and neutralino masses in a simplified model with a single accessible ˜c state for which the exclusive decay ˜c → c+ ˜χ0 1

is assumed. For neutralino masses below 200 GeV, scalar-charm masses up to 490 GeV are excluded, significantly extending previous limits.

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; BMWFW 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, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZˇS, Slove-nia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Tai-wan; TAEK, Turkey; STFC, the Royal Society and Lev-erhulme Trust, United Kingdom; DOE and NSF, United States of America.

The crucial computing support from all WLCG part-ners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Tai-wan), RAL (UK) and BNL (USA) and in the Tier-2 fa-cilities worldwide.

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The ATLAS Collaboration

G. Aad85_{, B. Abbott}113_{, J. Abdallah}152_{, S. Abdel Khalek}117_{, O. Abdinov}11_{, R. Aben}107_{, B. Abi}114_{, M. Abolins}90_,

O.S. AbouZeid159_{, H. Abramowicz}154_{, H. Abreu}153_{, R. Abreu}30_{, Y. Abulaiti}147a,147b_{, B.S. Acharya}165a,165b,a_,

L. Adamczyk38a_{, D.L. Adams}25_{, J. Adelman}108_{, S. Adomeit}100_{, T. Adye}131_{, T. Agatonovic-Jovin}13_,

J.A. Aguilar-Saavedra126a,126f_{, M. Agustoni}17_{, S.P. Ahlen}22_{, F. Ahmadov}65,b_{, G. Aielli}134a,134b_,

H. Akerstedt147a,147b_{, T.P.A. ˚Akesson}81_{, G. Akimoto}156_{, A.V. Akimov}96_{, G.L. Alberghi}20a,20b_{, J. Albert}170_,

S. Albrand55_{, M.J. Alconada Verzini}71_{, M. Aleksa}30_{, I.N. Aleksandrov}65_{, C. Alexa}26a_{, G. Alexander}154_,

G. Alexandre49_{, T. Alexopoulos}10_{, M. Alhroob}113_{, G. Alimonti}91a_{, L. Alio}85_{, J. Alison}31_{, B.M.M. Allbrooke}18_,

L.J. Allison72_{, P.P. Allport}74_{, A. Aloisio}104a,104b_{, A. Alonso}36_{, F. Alonso}71_{, C. Alpigiani}76_{, A. Altheimer}35_,

B. Alvarez Gonzalez90_{, M.G. Alviggi}104a,104b_{, K. Amako}66_{, Y. Amaral Coutinho}24a_{, C. Amelung}23_{, D. Amidei}89_,

S.P. Amor Dos Santos126a,126c_{, A. Amorim}126a,126b_{, S. Amoroso}48_{, N. Amram}154_{, G. Amundsen}23_,

C. Anastopoulos140, L.S. Ancu49, N. Andari30, T. Andeen35, C.F. Anders58b, G. Anders30, K.J. Anderson31, A. Andreazza91a,91b, V. Andrei58a, X.S. Anduaga71, S. Angelidakis9, I. Angelozzi107, P. Anger44, A. Angerami35, F. Anghinolfi30, A.V. Anisenkov109,c, N. Anjos12, A. Annovi124a,124b, M. Antonelli47, A. Antonov98, J. Antos145b, F. Anulli133a, M. Aoki66, L. Aperio Bella18, G. Arabidze90, Y. Arai66, J.P. Araque126a, A.T.H. Arce45,

F.A. Arduh71_{, J-F. Arguin}95_{, S. Argyropoulos}42_{, M. Arik}19a_{, A.J. Armbruster}30_{, O. Arnaez}30_{, V. Arnal}82_,

H. Arnold48_{, M. Arratia}28_{, O. Arslan}21_{, A. Artamonov}97_{, G. Artoni}23_{, S. Asai}156_{, N. Asbah}42_{, A. Ashkenazi}154_,

B. ˚Asman147a,147b_{, L. Asquith}150_{, K. Assamagan}25_{, R. Astalos}145a_{, M. Atkinson}166_{, N.B. Atlay}142_{, B. Auerbach}6_,

K. Augsten128_{, M. Aurousseau}146b_{, G. Avolio}30_{, B. Axen}15_{, M.K. Ayoub}117_{, G. Azuelos}95,d_{, M.A. Baak}30_,

A.E. Baas58a_{, C. Bacci}135a,135b_{, H. Bachacou}137_{, K. Bachas}155_{, M. Backes}30_{, M. Backhaus}30_{, P. Bagiacchi}133a,133b_,

P. Bagnaia133a,133b_{, Y. Bai}33a_{, T. Bain}35_{, J.T. Baines}131_{, O.K. Baker}177_{, P. Balek}129_{, T. Balestri}149_{, F. Balli}84_,

E. Banas39_{, Sw. Banerjee}174_{, A.A.E. Bannoura}176_{, H.S. Bansil}18_{, L. Barak}173_{, S.P. Baranov}96_{, E.L. Barberio}88_,

D. Barberis50a,50b_{, M. Barbero}85_{, T. Barillari}101_{, M. Barisonzi}165a,165b_{, T. Barklow}144_{, N. Barlow}28_{, S.L. Barnes}84_,

B.M. Barnett131_{, R.M. Barnett}15_{, Z. Barnovska}5_{, A. Baroncelli}135a_{, G. Barone}49_{, A.J. Barr}120_{, F. Barreiro}82_,

J. Barreiro Guimar˜aes da Costa57_{, R. Bartoldus}144_{, A.E. Barton}72_{, P. Bartos}145a_{, A. Bassalat}117_{, A. Basye}166_,

R.L. Bates53_{, S.J. Batista}159_{, J.R. Batley}28_{, M. Battaglia}138_{, M. Bauce}133a,133b_{, F. Bauer}137_{, H.S. Bawa}144,e_,

J.B. Beacham111, M.D. Beattie72, T. Beau80, P.H. Beauchemin162, R. Beccherle124a,124b, P. Bechtle21, H.P. Beck17,f, K. Becker120, S. Becker100, M. Beckingham171, C. Becot117, A.J. Beddall19c, A. Beddall19c, V.A. Bednyakov65, C.P. Bee149, L.J. Beemster107, T.A. Beermann176, M. Begel25, K. Behr120, C. Belanger-Champagne87, P.J. Bell49, W.H. Bell49, G. Bella154, L. Bellagamba20a, A. Bellerive29, M. Bellomo86, K. Belotskiy98, O. Beltramello30, O. Benary154_{, D. Benchekroun}136a_{, M. Bender}100_{, K. Bendtz}147a,147b_{, N. Benekos}10_{, Y. Benhammou}154_,

E. Benhar Noccioli49_{, J.A. Benitez Garcia}160b_{, D.P. Benjamin}45_{, J.R. Bensinger}23_{, S. Bentvelsen}107_{, L. Beresford}120_,

M. Beretta47_{, D. Berge}107_{, E. Bergeaas Kuutmann}167_{, N. Berger}5_{, F. Berghaus}170_{, J. Beringer}15_{, C. Bernard}22_,

N.R. Bernard86_{, C. Bernius}110_{, F.U. Bernlochner}21_{, T. Berry}77_{, P. Berta}129_{, C. Bertella}83_{, G. Bertoli}147a,147b_,

F. Bertolucci124a,124b_{, C. Bertsche}113_{, D. Bertsche}113_{, M.I. Besana}91a_{, G.J. Besjes}106_{, O. Bessidskaia Bylund}147a,147b_,

M. Bessner42_{, N. Besson}137_{, C. Betancourt}48_{, S. Bethke}101_{, A.J. Bevan}76_{, W. Bhimji}46_{, R.M. Bianchi}125_,

L. Bianchini23_{, M. Bianco}30_{, O. Biebel}100_{, S.P. Bieniek}78_{, M. Biglietti}135a_{, J. Bilbao De Mendizabal}49_{, H. Bilokon}47_,

M. Bindi54_{, S. Binet}117_{, A. Bingul}19c_{, C. Bini}133a,133b_{, C.W. Black}151_{, J.E. Black}144_{, K.M. Black}22_{, D. Blackburn}139_,

R.E. Blair6_{, J.-B. Blanchard}137_{, J.E. Blanco}77_{, T. Blazek}145a_{, I. Bloch}42_{, C. Blocker}23_{, W. Blum}83,∗_,

U. Blumenschein54_{, G.J. Bobbink}107_{, V.S. Bobrovnikov}109,c_{, S.S. Bocchetta}81_{, A. Bocci}45_{, C. Bock}100_,

C.R. Boddy120, M. Boehler48, J.A. Bogaerts30, A.G. Bogdanchikov109, C. Bohm147a, V. Boisvert77, T. Bold38a, V. Boldea26a, A.S. Boldyrev99, M. Bomben80, M. Bona76, M. Boonekamp137, A. Borisov130, G. Borissov72, S. Borroni42, J. Bortfeldt100, V. Bortolotto60a, K. Bos107, D. Boscherini20a, M. Bosman12, J. Boudreau125, J. Bouffard2, E.V. Bouhova-Thacker72, D. Boumediene34, C. Bourdarios117, N. Bousson114, S. Boutouil136d, A. Boveia30, J. Boyd30, I.R. Boyko65, I. Bozic13, J. Bracinik18, A. Brandt8, G. Brandt15, O. Brandt58a,

U. Bratzler157_{, B. Brau}86_{, J.E. Brau}116_{, H.M. Braun}176,∗_{, S.F. Brazzale}165a,165c_{, K. Brendlinger}122_{, A.J. Brennan}88_,

L. Brenner107_{, R. Brenner}167_{, S. Bressler}173_{, K. Bristow}146c_{, T.M. Bristow}46_{, D. Britton}53_{, F.M. Brochu}28_,

I. Brock21_{, R. Brock}90_{, J. Bronner}101_{, G. Brooijmans}35_{, T. Brooks}77_{, W.K. Brooks}32b_{, J. Brosamer}15_{, E. Brost}116_,

J. Brown55_{, P.A. Bruckman de Renstrom}39_{, D. Bruncko}145b_{, R. Bruneliere}48_{, A. Bruni}20a_{, G. Bruni}20a_,

M. Bruschi20a_{, L. Bryngemark}81_{, T. Buanes}14_{, Q. Buat}143_{, F. Bucci}49_{, P. Buchholz}142_{, A.G. Buckley}53_,

S.I. Buda26a_{, I.A. Budagov}65_{, F. Buehrer}48_{, L. Bugge}119_{, M.K. Bugge}119_{, O. Bulekov}98_{, H. Burckhart}30_,

S. Burdin74_{, B. Burghgrave}108_{, S. Burke}131_{, I. Burmeister}43_{, E. Busato}34_{, D. B¨uscher}48_{, V. B¨uscher}83_{, P. Bussey}53_,

C.P. Buszello167_{, J.M. Butler}22_{, A.I. Butt}3_{, C.M. Buttar}53_{, J.M. Butterworth}78_{, P. Butti}107_{, W. Buttinger}25_,

A. Buzatu53_{, S. Cabrera Urb´an}168_{, D. Caforio}128_{, O. Cakir}4a_{, P. Calafiura}15_{, A. Calandri}137_{, G. Calderini}80_,

L.M. Caminada15, R. Caminal Armadans12, S. Campana30, M. Campanelli78, A. Campoverde149, V. Canale104a,104b, A. Canepa160a, M. Cano Bret76, J. Cantero82, R. Cantrill126a, T. Cao40, M.D.M. Capeans Garrido30, I. Caprini26a, M. Caprini26a_{, M. Capua}37a,37b_{, R. Caputo}83_{, R. Cardarelli}134a_{, T. Carli}30_{, G. Carlino}104a_{, L. Carminati}91a,91b_,

S. Caron106_{, E. Carquin}32a_{, G.D. Carrillo-Montoya}146c_{, J.R. Carter}28_{, J. Carvalho}126a,126c_{, D. Casadei}78_,

M.P. Casado12_{, M. Casolino}12_{, E. Castaneda-Miranda}146b_{, A. Castelli}107_{, V. Castillo Gimenez}168_{, N.F. Castro}126a_,

P. Catastini57_{, A. Catinaccio}30_{, J.R. Catmore}119_{, A. Cattai}30_{, G. Cattani}134a,134b_{, J. Caudron}83_{, V. Cavaliere}166_,

D. Cavalli91a_{, M. Cavalli-Sforza}12_{, V. Cavasinni}124a,124b_{, F. Ceradini}135a,135b_{, B.C. Cerio}45_{, K. Cerny}129_,

A.S. Cerqueira24b_{, A. Cerri}150_{, L. Cerrito}76_{, F. Cerutti}15_{, M. Cerv}30_{, A. Cervelli}17_{, S.A. Cetin}19b_{, A. Chafaq}136a_,

D. Chakraborty108_{, I. Chalupkova}129_{, P. Chang}166_{, B. Chapleau}87_{, J.D. Chapman}28_{, D. Charfeddine}117_,

D.G. Charlton18_{, C.C. Chau}159_{, C.A. Chavez Barajas}150_{, S. Cheatham}153_{, A. Chegwidden}90_{, S. Chekanov}6_,

S.V. Chekulaev160a_{, G.A. Chelkov}65,g_{, M.A. Chelstowska}89_{, C. Chen}64_{, H. Chen}25_{, K. Chen}149_{, L. Chen}33d,h_,

S. Chen33c_{, X. Chen}33f_{, Y. Chen}67_{, H.C. Cheng}89_{, Y. Cheng}31_{, A. Cheplakov}65_{, E. Cheremushkina}130_,

R. Cherkaoui El Moursli136e, V. Chernyatin25,∗, E. Cheu7, L. Chevalier137, V. Chiarella47, J.T. Childers6,

A. Chilingarov72, G. Chiodini73a, A.S. Chisholm18, R.T. Chislett78, A. Chitan26a, M.V. Chizhov65, S. Chouridou9, B.K.B. Chow100, D. Chromek-Burckhart30, M.L. Chu152, J. Chudoba127, J.J. Chwastowski39, L. Chytka115, G. Ciapetti133a,133b, A.K. Ciftci4a, D. Cinca53, V. Cindro75, A. Ciocio15, Z.H. Citron173, M. Citterio91a, M. Ciubancan26a, A. Clark49, P.J. Clark46, R.N. Clarke15, W. Cleland125, C. Clement147a,147b, Y. Coadou85, M. Cobal165a,165c_{, A. Coccaro}139_{, J. Cochran}64_{, L. Coffey}23_{, J.G. Cogan}144_{, B. Cole}35_{, S. Cole}108_{, A.P. Colijn}107_,

J. Collot55_{, T. Colombo}58c_{, G. Compostella}101_{, P. Conde Mui˜no}126a,126b_{, E. Coniavitis}48_{, S.H. Connell}146b_,

I.A. Connelly77_{, S.M. Consonni}91a,91b_{, V. Consorti}48_{, S. Constantinescu}26a_{, C. Conta}121a,121b_{, G. Conti}30_,

F. Conventi104a,i_{, M. Cooke}15_{, B.D. Cooper}78_{, A.M. Cooper-Sarkar}120_{, K. Copic}15_{, T. Cornelissen}176_,

M. Corradi20a_{, F. Corriveau}87,j_{, A. Corso-Radu}164_{, A. Cortes-Gonzalez}12_{, G. Cortiana}101_{, M.J. Costa}168_,

D. Costanzo140_{, D. Cˆot´e}8_{, G. Cottin}28_{, G. Cowan}77_{, B.E. Cox}84_{, K. Cranmer}110_{, G. Cree}29_{, S. Cr´ep´e-Renaudin}55_,

F. Crescioli80_{, W.A. Cribbs}147a,147b_{, M. Crispin Ortuzar}120_{, M. Cristinziani}21_{, V. Croft}106_{, G. Crosetti}37a,37b_,

T. Cuhadar Donszelmann140_{, J. Cummings}177_{, M. Curatolo}47_{, C. Cuthbert}151_{, H. Czirr}142_{, P. Czodrowski}3_,

S. D’Auria53_{, M. D’Onofrio}74_{, M.J. Da Cunha Sargedas De Sousa}126a,126b_{, C. Da Via}84_{, W. Dabrowski}38a_,

A. Dafinca120_{, T. Dai}89_{, O. Dale}14_{, F. Dallaire}95_{, C. Dallapiccola}86_{, M. Dam}36_{, J.R. Dandoy}31_{, A.C. Daniells}18_,

M. Danninger169, M. Dano Hoffmann137, V. Dao48, G. Darbo50a, S. Darmora8, J. Dassoulas3, A. Dattagupta61, W. Davey21, C. David170, T. Davidek129, E. Davies120,k, M. Davies154, O. Davignon80, P. Davison78,

Y. Davygora58a, E. Dawe143, I. Dawson140, R.K. Daya-Ishmukhametova86, K. De8, R. de Asmundis104a,

S. De Castro20a,20b, S. De Cecco80, N. De Groot106, P. de Jong107, H. De la Torre82, F. De Lorenzi64, L. De Nooij107, D. De Pedis133a_{, A. De Salvo}133a_{, U. De Sanctis}150_{, A. De Santo}150_{, J.B. De Vivie De Regie}117_{, W.J. Dearnaley}72_,

R. Debbe25_{, C. Debenedetti}138_{, D.V. Dedovich}65_{, I. Deigaard}107_{, J. Del Peso}82_{, T. Del Prete}124a,124b_{, D. Delgove}117_,

F. Deliot137_{, C.M. Delitzsch}49_{, M. Deliyergiyev}75_{, A. Dell’Acqua}30_{, L. Dell’Asta}22_{, M. Dell’Orso}124a,124b_,

M. Della Pietra104a,i_{, D. della Volpe}49_{, M. Delmastro}5_{, P.A. Delsart}55_{, C. Deluca}107_{, D.A. DeMarco}159_,

S. Demers177_{, M. Demichev}65_{, A. Demilly}80_{, S.P. Denisov}130_{, D. Derendarz}39_{, J.E. Derkaoui}136d_{, F. Derue}80_,

P. Dervan74_{, K. Desch}21_{, C. Deterre}42_{, P.O. Deviveiros}30_{, A. Dewhurst}131_{, S. Dhaliwal}107_{, A. Di Ciaccio}134a,134b_,

L. Di Ciaccio5_{, A. Di Domenico}133a,133b_{, C. Di Donato}104a,104b_{, A. Di Girolamo}30_{, B. Di Girolamo}30_,

A. Di Mattia153_{, B. Di Micco}135a,135b_{, R. Di Nardo}47_{, A. Di Simone}48_{, R. Di Sipio}20a,20b_{, D. Di Valentino}29_,

C. Diaconu85_{, M. Diamond}159_{, F.A. Dias}46_{, M.A. Diaz}32a_{, E.B. Diehl}89_{, J. Dietrich}16_{, T.A. Dietzsch}58a_{, S. Diglio}85_,

A. Dimitrievska13_{, J. Dingfelder}21_{, F. Dittus}30_{, F. Djama}85_{, T. Djobava}51b_{, J.I. Djuvsland}58a_{, M.A.B. do Vale}24c_,

D. Dobos30_{, M. Dobre}26a_{, C. Doglioni}49_{, T. Doherty}53_{, T. Dohmae}156_{, J. Dolejsi}129_{, Z. Dolezal}129_,

B.A. Dolgoshein98,∗, M. Donadelli24d, S. Donati124a,124b, P. Dondero121a,121b, J. Donini34, J. Dopke131, A. Doria104a, M.T. Dova71, A.T. Doyle53, M. Dris10, E. Dubreuil34, E. Duchovni173, G. Duckeck100, O.A. Ducu26a, D. Duda176, A. Dudarev30, L. Duflot117, L. Duguid77, M. D¨uhrssen30, M. Dunford58a, H. Duran Yildiz4a, M. D¨uren52,

A. Durglishvili51b, D. Duschinger44, M. Dwuznik38a, M. Dyndal38a, W. Edson2, N.C. Edwards46, W. Ehrenfeld21, T. Eifert30_{, G. Eigen}14_{, K. Einsweiler}15_{, T. Ekelof}167_{, M. El Kacimi}136c_{, M. Ellert}167_{, S. Elles}5_{, F. Ellinghaus}83_,

A.A. Elliot170_{, N. Ellis}30_{, J. Elmsheuser}100_{, M. Elsing}30_{, D. Emeliyanov}131_{, Y. Enari}156_{, O.C. Endner}83_,

M. Endo118_{, R. Engelmann}149_{, J. Erdmann}43_{, A. Ereditato}17_{, D. Eriksson}147a_{, G. Ernis}176_{, J. Ernst}2_{, M. Ernst}25_,

S. Errede166_{, E. Ertel}83_{, M. Escalier}117_{, H. Esch}43_{, C. Escobar}125_{, B. Esposito}47_{, A.I. Etienvre}137_{, E. Etzion}154_,

H. Evans61_{, A. Ezhilov}123_{, L. Fabbri}20a,20b_{, G. Facini}31_{, R.M. Fakhrutdinov}130_{, S. Falciano}133a_{, R.J. Falla}78_,

J. Faltova129_{, Y. Fang}33a_{, M. Fanti}91a,91b_{, A. Farbin}8_{, A. Farilla}135a_{, T. Farooque}12_{, S. Farrell}15_{, S.M. Farrington}171_,

P. Farthouat30_{, F. Fassi}136e_{, P. Fassnacht}30_{, D. Fassouliotis}9_{, A. Favareto}50a,50b_{, L. Fayard}117_{, P. Federic}145a_,

O.L. Fedin123,l_{, W. Fedorko}169_{, S. Feigl}30_{, L. Feligioni}85_{, C. Feng}33d_{, E.J. Feng}6_{, H. Feng}89_{, A.B. Fenyuk}130_,

P. Fernandez Martinez168_{, S. Fernandez Perez}30_{, S. Ferrag}53_{, J. Ferrando}53_{, A. Ferrari}167_{, P. Ferrari}107_,

M. Fiascaris31, F. Fiedler83, A. Filipˇciˇc75, M. Filipuzzi42, F. Filthaut106, M. Fincke-Keeler170, K.D. Finelli151, M.C.N. Fiolhais126a,126c, L. Fiorini168, A. Firan40, A. Fischer2, C. Fischer12, J. Fischer176, W.C. Fisher90, E.A. Fitzgerald23_{, M. Flechl}48_{, I. Fleck}142_{, P. Fleischmann}89_{, S. Fleischmann}176_{, G.T. Fletcher}140_{, G. Fletcher}76_,

T. Flick176_{, A. Floderus}81_{, L.R. Flores Castillo}60a_{, M.J. Flowerdew}101_{, A. Formica}137_{, A. Forti}84_{, D. Fournier}117_,

H. Fox72_{, S. Fracchia}12_{, P. Francavilla}80_{, M. Franchini}20a,20b_{, D. Francis}30_{, L. Franconi}119_{, M. Franklin}57_,

M. Fraternali121a,121b_{, D. Freeborn}78_{, S.T. French}28_{, F. Friedrich}44_{, D. Froidevaux}30_{, J.A. Frost}120_{, C. Fukunaga}157_,

E. Fullana Torregrosa83_{, B.G. Fulsom}144_{, J. Fuster}168_{, C. Gabaldon}55_{, O. Gabizon}176_{, A. Gabrielli}20a,20b_,

A. Gabrielli133a,133b_{, S. Gadatsch}107_{, S. Gadomski}49_{, G. Gagliardi}50a,50b_{, P. Gagnon}61_{, C. Galea}106_,

B. Galhardo126a,126c_{, E.J. Gallas}120_{, B.J. Gallop}131_{, P. Gallus}128_{, G. Galster}36_{, K.K. Gan}111_{, J. Gao}33b_,

Y.S. Gao144,e_{, F.M. Garay Walls}46_{, F. Garberson}177_{, C. Garc´ıa}168_{, J.E. Garc´ıa Navarro}168_{, M. Garcia-Sciveres}15_,

R.W. Gardner31_{, N. Garelli}144_{, V. Garonne}30_{, C. Gatti}47_{, G. Gaudio}121a_{, B. Gaur}142_{, L. Gauthier}95_,

P. Gauzzi133a,133b_{, I.L. Gavrilenko}96_{, C. Gay}169_{, G. Gaycken}21_{, E.N. Gazis}10_{, P. Ge}33d_{, Z. Gecse}169_{, C.N.P. Gee}131_,

D.A.A. Geerts107, Ch. Geich-Gimbel21, C. Gemme50a, M.H. Genest55, S. Gentile133a,133b, M. George54, S. George77, D. Gerbaudo164, A. Gershon154, H. Ghazlane136b, N. Ghodbane34, B. Giacobbe20a, S. Giagu133a,133b,

V. Giangiobbe12, P. Giannetti124a,124b, F. Gianotti30, B. Gibbard25, S.M. Gibson77, M. Gilchriese15,

T.P.S. Gillam28, D. Gillberg30, G. Gilles34, D.M. Gingrich3,d, N. Giokaris9, M.P. Giordani165a,165c, F.M. Giorgi20a, F.M. Giorgi16, P.F. Giraud137, D. Giugni91a, C. Giuliani48, M. Giulini58b, B.K. Gjelsten119, S. Gkaitatzis155, I. Gkialas155_{, E.L. Gkougkousis}117_{, L.K. Gladilin}99_{, C. Glasman}82_{, J. Glatzer}30_{, P.C.F. Glaysher}46_{, A. Glazov}42_,

M. Goblirsch-Kolb101_{, J.R. Goddard}76_{, J. Godlewski}39_{, S. Goldfarb}89_{, T. Golling}49_{, D. Golubkov}130_,

A. Gomes126a,126b,126d_{, R. Gon¸calo}126a_{, J. Goncalves Pinto Firmino Da Costa}137_{, L. Gonella}21_,

S. Gonz´alez de la Hoz168_{, G. Gonzalez Parra}12_{, S. Gonzalez-Sevilla}49_{, L. Goossens}30_{, P.A. Gorbounov}97_,

H.A. Gordon25_{, I. Gorelov}105_{, B. Gorini}30_{, E. Gorini}73a,73b_{, A. Goriˇsek}75_{, E. Gornicki}39_{, A.T. Goshaw}45_,

C. G¨ossling43_{, M.I. Gostkin}65_{, M. Gouighri}136a_{, D. Goujdami}136c_{, A.G. Goussiou}139_{, H.M.X. Grabas}138_{, L. Graber}54_,

I. Grabowska-Bold38a_{, P. Grafstr¨om}20a,20b_{, K-J. Grahn}42_{, J. Gramling}49_{, E. Gramstad}119_{, S. Grancagnolo}16_,

V. Grassi149_{, V. Gratchev}123_{, H.M. Gray}30_{, E. Graziani}135a_{, Z.D. Greenwood}79,m_{, K. Gregersen}78_{, I.M. Gregor}42_,

P. Grenier144_{, J. Griffiths}8_{, A.A. Grillo}138_{, K. Grimm}72_{, S. Grinstein}12,n_{, Ph. Gris}34_{, Y.V. Grishkevich}99_,

J.-F. Grivaz117_{, J.P. Grohs}44_{, A. Grohsjean}42_{, E. Gross}173_{, J. Grosse-Knetter}54_{, G.C. Grossi}134a,134b_{, Z.J. Grout}150_,

L. Guan33b, J. Guenther128, F. Guescini49, D. Guest177, O. Gueta154, E. Guido50a,50b, T. Guillemin117, S. Guindon2, U. Gul53, C. Gumpert44, J. Guo33e, S. Gupta120, P. Gutierrez113, N.G. Gutierrez Ortiz53, C. Gutschow44,

N. Guttman154, C. Guyot137, C. Gwenlan120, C.B. Gwilliam74, A. Haas110, C. Haber15, H.K. Hadavand8,

N. Haddad136e, P. Haefner21, S. Hageb¨ock21, Z. Hajduk39, H. Hakobyan178, M. Haleem42, J. Haley114, D. Hall120, G. Halladjian90_{, G.D. Hallewell}85_{, K. Hamacher}176_{, P. Hamal}115_{, K. Hamano}170_{, M. Hamer}54_{, A. Hamilton}146a_,

S. Hamilton162_{, G.N. Hamity}146c_{, P.G. Hamnett}42_{, L. Han}33b_{, K. Hanagaki}118_{, K. Hanawa}156_{, M. Hance}15_,

P. Hanke58a_{, R. Hanna}137_{, J.B. Hansen}36_{, J.D. Hansen}36_{, P.H. Hansen}36_{, K. Hara}161_{, A.S. Hard}174_,

T. Harenberg176_{, F. Hariri}117_{, S. Harkusha}92_{, R.D. Harrington}46_{, P.F. Harrison}171_{, F. Hartjes}107_{, M. Hasegawa}67_,

S. Hasegawa103_{, Y. Hasegawa}141_{, A. Hasib}113_{, S. Hassani}137_{, S. Haug}17_{, R. Hauser}90_{, L. Hauswald}44_,

M. Havranek127_{, C.M. Hawkes}18_{, R.J. Hawkings}30_{, A.D. Hawkins}81_{, T. Hayashi}161_{, D. Hayden}90_{, C.P. Hays}120_,

J.M. Hays76_{, H.S. Hayward}74_{, S.J. Haywood}131_{, S.J. Head}18_{, T. Heck}83_{, V. Hedberg}81_{, L. Heelan}8_{, S. Heim}122_,

T. Heim176_{, B. Heinemann}15_{, L. Heinrich}110_{, J. Hejbal}127_{, L. Helary}22_{, M. Heller}30_{, S. Hellman}147a,147b_,

D. Hellmich21_{, C. Helsens}30_{, J. Henderson}120_{, R.C.W. Henderson}72_{, Y. Heng}174_{, C. Hengler}42_{, A. Henrichs}177_,

A.M. Henriques Correia30_{, S. Henrot-Versille}117_{, G.H. Herbert}16_{, Y. Hern´andez Jim´enez}168_{, R. Herrberg-Schubert}16_,

G. Herten48_{, R. Hertenberger}100_{, L. Hervas}30_{, G.G. Hesketh}78_{, N.P. Hessey}107_{, R. Hickling}76_,

E. Hig´on-Rodriguez168, E. Hill170, J.C. Hill28, K.H. Hiller42, S.J. Hillier18, I. Hinchliffe15, E. Hines122,

R.R. Hinman15, M. Hirose158, D. Hirschbuehl176, J. Hobbs149, N. Hod107, M.C. Hodgkinson140, P. Hodgson140, A. Hoecker30, M.R. Hoeferkamp105, F. Hoenig100, M. Hohlfeld83, T.R. Holmes15, T.M. Hong122,

L. Hooft van Huysduynen110, W.H. Hopkins116, Y. Horii103, A.J. Horton143, J-Y. Hostachy55, S. Hou152, A. Hoummada136a_{, J. Howard}120_{, J. Howarth}42_{, M. Hrabovsky}115_{, I. Hristova}16_{, J. Hrivnac}117_{, T. Hryn’ova}5_,

A. Hrynevich93_{, C. Hsu}146c_{, P.J. Hsu}152,o_{, S.-C. Hsu}139_{, D. Hu}35_{, Q. Hu}33b_{, X. Hu}89_{, Y. Huang}42_{, Z. Hubacek}30_,

F. Hubaut85_{, F. Huegging}21_{, T.B. Huffman}120_{, E.W. Hughes}35_{, G. Hughes}72_{, M. Huhtinen}30_{, T.A. H¨ulsing}83_,

N. Huseynov65,b_{, J. Huston}90_{, J. Huth}57_{, G. Iacobucci}49_{, G. Iakovidis}25_{, I. Ibragimov}142_{, L. Iconomidou-Fayard}117_,

E. Ideal177_{, Z. Idrissi}136e_{, P. Iengo}104a_{, O. Igonkina}107_{, T. Iizawa}172_{, Y. Ikegami}66_{, K. Ikematsu}142_{, M. Ikeno}66_,

Y. Ilchenko31,p_{, D. Iliadis}155_{, N. Ilic}159_{, Y. Inamaru}67_{, T. Ince}101_{, P. Ioannou}9_{, M. Iodice}135a_{, K. Iordanidou}9_,

V. Ippolito57_{, A. Irles Quiles}168_{, C. Isaksson}167_{, M. Ishino}68_{, M. Ishitsuka}158_{, R. Ishmukhametov}111_{, C. Issever}120_,

S. Istin19a_{, J.M. Iturbe Ponce}84_{, R. Iuppa}134a,134b_{, J. Ivarsson}81_{, W. Iwanski}39_{, H. Iwasaki}66_{, J.M. Izen}41_,

V. Izzo104a_{, B. Jackson}122_{, M. Jackson}74_{, P. Jackson}1_{, M.R. Jaekel}30_{, V. Jain}2_{, K. Jakobs}48_{, S. Jakobsen}30_,

G. Jarlskog81, N. Javadov65,b, T. Jav˚urek48, L. Jeanty15, J. Jejelava51a,q, G.-Y. Jeng151, D. Jennens88, P. Jenni48,r, J. Jentzsch43, C. Jeske171, S. J´ez´equel5, H. Ji174, J. Jia149, Y. Jiang33b, J. Jimenez Pena168, S. Jin33a, A. Jinaru26a, O. Jinnouchi158_{, M.D. Joergensen}36_{, P. Johansson}140_{, K.A. Johns}7_{, K. Jon-And}147a,147b_{, G. Jones}171_,

R.W.L. Jones72_{, T.J. Jones}74_{, J. Jongmanns}58a_{, P.M. Jorge}126a,126b_{, K.D. Joshi}84_{, J. Jovicevic}148_{, X. Ju}174_,

C.A. Jung43_{, P. Jussel}62_{, A. Juste Rozas}12,n_{, M. Kaci}168_{, A. Kaczmarska}39_{, M. Kado}117_{, H. Kagan}111_{, M. Kagan}144_,

S.J. Kahn85_{, E. Kajomovitz}45_{, C.W. Kalderon}120_{, S. Kama}40_{, A. Kamenshchikov}130_{, N. Kanaya}156_{, M. Kaneda}30_,

S. Kaneti28_{, V.A. Kantserov}98_{, J. Kanzaki}66_{, B. Kaplan}110_{, A. Kapliy}31_{, D. Kar}53_{, K. Karakostas}10_,

A. Karamaoun3_{, N. Karastathis}10,107_{, M.J. Kareem}54_{, M. Karnevskiy}83_{, S.N. Karpov}65_{, Z.M. Karpova}65_,

K. Karthik110_{, V. Kartvelishvili}72_{, A.N. Karyukhin}130_{, L. Kashif}174_{, R.D. Kass}111_{, A. Kastanas}14_{, Y. Kataoka}156_,

A. Katre49_{, J. Katzy}42_{, K. Kawagoe}70_{, T. Kawamoto}156_{, G. Kawamura}54_{, S. Kazama}156_{, V.F. Kazanin}109_,

M.Y. Kazarinov65_{, R. Keeler}170_{, R. Kehoe}40_{, M. Keil}54_{, J.S. Keller}42_{, J.J. Kempster}77_{, H. Keoshkerian}84_,

O. Kepka127_{, B.P. Kerˇsevan}75_{, S. Kersten}176_{, R.A. Keyes}87_{, F. Khalil-zada}11_{, H. Khandanyan}147a,147b_,

A. Khanov114, A. Kharlamov109, A. Khodinov98, A. Khomich58a, T.J. Khoo28, G. Khoriauli21, V. Khovanskiy97, E. Khramov65, J. Khubua51b,s, H.Y. Kim8, H. Kim147a,147b, S.H. Kim161, N. Kimura155, O. Kind16, B.T. King74, M. King168, R.S.B. King120, S.B. King169, J. Kirk131, A.E. Kiryunin101, T. Kishimoto67, D. Kisielewska38a,

F. Kiss48, K. Kiuchi161, E. Kladiva145b, M.H. Klein35, M. Klein74, U. Klein74, K. Kleinknecht83, P. Klimek147a,147b, A. Klimentov25, R. Klingenberg43, J.A. Klinger84, T. Klioutchnikova30, P.F. Klok106, E.-E. Kluge58a, P. Kluit107, S. Kluth101_{, E. Kneringer}62_{, E.B.F.G. Knoops}85_{, A. Knue}53_{, D. Kobayashi}158_{, T. Kobayashi}156_{, M. Kobel}44_,

M. Kocian144_{, P. Kodys}129_{, T. Koffas}29_{, E. Koffeman}107_{, L.A. Kogan}120_{, S. Kohlmann}176_{, Z. Kohout}128_,

T. Kohriki66_{, T. Koi}144_{, H. Kolanoski}16_{, I. Koletsou}5_{, A.A. Komar}96,∗_{, Y. Komori}156_{, T. Kondo}66_,

N. Kondrashova42_{, K. K¨oneke}48_{, A.C. K¨onig}106_{, S. K¨onig}83_{, T. Kono}66,t_{, R. Konoplich}110,u_{, N. Konstantinidis}78_,

R. Kopeliansky153_{, S. Koperny}38a_{, L. K¨opke}83_{, A.K. Kopp}48_{, K. Korcyl}39_{, K. Kordas}155_{, A. Korn}78_,

A.A. Korol109,c_{, I. Korolkov}12_{, E.V. Korolkova}140_{, O. Kortner}101_{, S. Kortner}101_{, T. Kosek}129_{, V.V. Kostyukhin}21_,

V.M. Kotov65_{, A. Kotwal}45_{, A. Kourkoumeli-Charalampidi}155_{, C. Kourkoumelis}9_{, V. Kouskoura}25_,

A. Koutsman160a_{, R. Kowalewski}170_{, T.Z. Kowalski}38a_{, W. Kozanecki}137_{, A.S. Kozhin}130_{, V.A. Kramarenko}99_,

G. Kramberger75_{, D. Krasnopevtsev}98_{, M.W. Krasny}80_{, A. Krasznahorkay}30_{, J.K. Kraus}21_{, A. Kravchenko}25_,

S. Kreiss110_{, M. Kretz}58c_{, J. Kretzschmar}74_{, K. Kreutzfeldt}52_{, P. Krieger}159_{, K. Krizka}31_{, K. Kroeninger}43_,

H. Kroha101, J. Kroll122, J. Kroseberg21, J. Krstic13, U. Kruchonak65, H. Kr¨uger21, N. Krumnack64,

Z.V. Krumshteyn65, A. Kruse174, M.C. Kruse45, M. Kruskal22, T. Kubota88, H. Kucuk78, S. Kuday4c, S. Kuehn48, A. Kugel58c, F. Kuger175, A. Kuhl138, T. Kuhl42, V. Kukhtin65, Y. Kulchitsky92, S. Kuleshov32b, M. Kuna133a,133b, T. Kunigo68, A. Kupco127, H. Kurashige67, Y.A. Kurochkin92, R. Kurumida67, V. Kus127, E.S. Kuwertz148,

M. Kuze158_{, J. Kvita}115_{, T. Kwan}170_{, D. Kyriazopoulos}140_{, A. La Rosa}49_{, J.L. La Rosa Navarro}24d_,

L. La Rotonda37a,37b_{, C. Lacasta}168_{, F. Lacava}133a,133b_{, J. Lacey}29_{, H. Lacker}16_{, D. Lacour}80_{, V.R. Lacuesta}168_,

E. Ladygin65_{, R. Lafaye}5_{, B. Laforge}80_{, T. Lagouri}177_{, S. Lai}48_{, L. Lambourne}78_{, S. Lammers}61_{, C.L. Lampen}7_,

W. Lampl7_{, E. Lan¸con}137_{, U. Landgraf}48_{, M.P.J. Landon}76_{, V.S. Lang}58a_{, A.J. Lankford}164_{, F. Lanni}25_,

K. Lantzsch30_{, S. Laplace}80_{, C. Lapoire}30_{, J.F. Laporte}137_{, T. Lari}91a_{, F. Lasagni Manghi}20a,20b_{, M. Lassnig}30_,

P. Laurelli47_{, W. Lavrijsen}15_{, A.T. Law}138_{, P. Laycock}74_{, O. Le Dortz}80_{, E. Le Guirriec}85_{, E. Le Menedeu}12_,

T. LeCompte6_{, F. Ledroit-Guillon}55_{, C.A. Lee}146b_{, S.C. Lee}152_{, L. Lee}1_{, G. Lefebvre}80_{, M. Lefebvre}170_{, F. Legger}100_,

C. Leggett15_{, A. Lehan}74_{, G. Lehmann Miotto}30_{, X. Lei}7_{, W.A. Leight}29_{, A. Leisos}155_{, A.G. Leister}177_,

M.A.L. Leite24d_{, R. Leitner}129_{, D. Lellouch}173_{, B. Lemmer}54_{, K.J.C. Leney}78_{, T. Lenz}21_{, G. Lenzen}176_{, B. Lenzi}30_,

R. Leone7_{, S. Leone}124a,124b_{, C. Leonidopoulos}46_{, S. Leontsinis}10_{, C. Leroy}95_{, C.G. Lester}28_{, M. Levchenko}123_,

J. Levˆeque5_{, D. Levin}89_{, L.J. Levinson}173_{, M. Levy}18_{, A. Lewis}120_{, A.M. Leyko}21_{, M. Leyton}41_{, B. Li}33b,v_{, B. Li}85_,

H. Li149, H.L. Li31, L. Li45, L. Li33e, S. Li45, Y. Li33c,w, Z. Liang138, H. Liao34, B. Liberti134a, P. Lichard30, K. Lie166, J. Liebal21, W. Liebig14, C. Limbach21, A. Limosani151, S.C. Lin152,x, T.H. Lin83, F. Linde107, B.E. Lindquist149, J.T. Linnemann90, E. Lipeles122, A. Lipniacka14, M. Lisovyi42, T.M. Liss166, D. Lissauer25, A. Lister169, A.M. Litke138, B. Liu152, D. Liu152, J. Liu85, J.B. Liu33b, K. Liu33b,y, L. Liu89, M. Liu45, M. Liu33b, Y. Liu33b_{, M. Livan}121a,121b_{, A. Lleres}55_{, J. Llorente Merino}82_{, S.L. Lloyd}76_{, F. Lo Sterzo}152_{, E. Lobodzinska}42_,

P. Loch7_{, W.S. Lockman}138_{, F.K. Loebinger}84_{, A.E. Loevschall-Jensen}36_{, A. Loginov}177_{, T. Lohse}16_,

K. Lohwasser42_{, M. Lokajicek}127_{, B.A. Long}22_{, J.D. Long}89_{, R.E. Long}72_{, K.A. Looper}111_{, L. Lopes}126a_,

D. Lopez Mateos57_{, B. Lopez Paredes}140_{, I. Lopez Paz}12_{, J. Lorenz}100_{, N. Lorenzo Martinez}61_{, M. Losada}163_,

P. Loscutoff15_{, P.J. L¨osel}100_{, X. Lou}33a_{, A. Lounis}117_{, J. Love}6_{, P.A. Love}72_{, F. Lu}33a_{, N. Lu}89_{, H.J. Lubatti}139_,

C. Luci133a,133b_{, A. Lucotte}55_{, F. Luehring}61_{, W. Lukas}62_{, L. Luminari}133a_{, O. Lundberg}147a,147b_,

B. Lund-Jensen148_{, M. Lungwitz}83_{, D. Lynn}25_{, R. Lysak}127_{, E. Lytken}81_{, H. Ma}25_{, L.L. Ma}33d_{, G. Maccarrone}47_,

A. Macchiolo101_{, J. Machado Miguens}126a,126b_{, D. Macina}30_{, D. Madaffari}85_{, R. Madar}34_{, H.J. Maddocks}72_,

W.F. Mader44_{, A. Madsen}167_{, T. Maeno}25_{, A. Maevskiy}99_{, E. Magradze}54_{, K. Mahboubi}48_{, J. Mahlstedt}107_,