Search for Scalar Diphoton Resonances in the Mass Range $65-600$ GeV with the ATLAS Detector in $pp$ Collision Data at $\sqrt{s}$ = 8 $TeV$

arXiv:1407.6583v2 [hep-ex] 8 Sep 2014

EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)

CERN-PH-EP-2014-142

Submitted to: Physical Review Letters

Search for Scalar Diphoton Resonances in the Mass Range

65–600 GeV with the ATLAS Detector in pp Collision Data at

√s

= 8 TeV

The ATLAS Collaboration

Abstract

A search for scalar particles decaying via narrow resonances into two photons in the mass range

65–600 GeV is performed using 20.3 fb

−₁

of

√

s

= 8 TeV pp collision data collected with the ATLAS

de-tector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background.

No significant evidence for an additional signal is observed. The results are presented as limits at

the 95% confidence level on the production cross-section of a scalar boson times branching ratio into

two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of

the event topology. The upper limits set extend over a considerably wider mass range than previous

searches.

c

2014 CERN for the benefit of the ATLAS Collaboration.

Search for Scalar Diphoton Resonances in the Mass Range 65–600 GeV with the

ATLAS Detector in pp Collision Data at

√s = 8 TeV

ATLAS Collaboration

A search for scalar particles decaying via narrow resonances into two photons in the mass range 65–600 GeV is performed using 20.3 fb−1 _of√_{s = 8 TeV pp collision data collected with the ATLAS}

detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a back-ground. No significant evidence for an additional signal is observed. The results are presented as limits at the 95% confidence level on the production cross-section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches.

PACS numbers: 13.85.Qk,14.70.Bh,14.80.Da,14.80.Ec

In July 2012, the ATLAS and CMS collaborations re-ported the discovery of a new particle [1,2] whose mea-sured couplings and properties are compatible with the Standard Model Higgs boson (H) [3–6]. However, several extensions to the Standard Model, in particular models featuring an extended Higgs sector [7–13], predict new scalar resonances below or above the H mass which may be narrow when their branching ratio to two photons is non-negligible.

This Letter presents a search for a scalar particle X of mass mX decaying via narrow resonances into two

pho-tons. It extends the method developed for the measure-ment of the H couplings in the H → γγ channel [3] to the range 65 < mX< 600 GeV. Analytical descriptions

of the signal and background distributions are fitted to the measured diphoton invariant mass spectrum mγγ to

determine the signal and background yields. The result is presented as a limit on the production cross-section times the branching ratio BR(X → γγ), restricted to a fiducial volume where the reconstruction efficiency is ap-proximately independent of the event topology. The res-onance with mass mX is considered narrow when its

in-trinsic width is smaller than 0.09 GeV + 0.01 · mX. This

upper limit is defined such that the bias in the number of fitted signal events is kept below 10%, and ensures that the diphoton invariant mass width is dominated by the experimental resolution in the ATLAS detector. Model-dependent interference effects between the resonance and the continuum diphoton background are not considered. The ATLAS detector [14] at the LHC [15] covers the pseudorapidity [16] range |η| < 4.9 and the full azimuthal angle φ. It consists of an inner tracking detector covering the pseudorapidity range |η| < 2.5, surrounded by elec-tromagnetic and hadronic calorimeters and an external muon spectrometer.

The search is carried out using the √s = 8 TeV pp collision dataset collected in 2012, with stable beam conditions and all ATLAS subsystems opera-tional, which corresponds to an integrated luminosity of L = 20.3 ± 0.6 fb−1_{[17]. The data were recorded using a}

diphoton trigger that required two electromagnetic clus-ters with transverse energies ETabove 20 GeV, both

ful-filling identification criteria based on shower shapes in the electromagnetic calorimeter. The efficiency of the diphoton trigger [18] is (98.7 ± 0.5)% for signal events passing the analysis selection.

The event selection requires at least one reconstructed primary vertex with two or more tracks with transverse momenta pT > 0.4 GeV, and at least two photon

can-didates with ET > 22 GeV and |η| < 2.37, excluding

the barrel/endcap transition region of the calorimeter, 1.37 < |η| < 1.56.

Photon reconstruction is seeded by clusters of electro-magnetic calorimeter cells. Clusters without matching tracks are classified as unconverted photons. Clusters with matched tracks are considered as electron candi-dates, but are classified as converted photons if they are associated with two tracks consistent with a γ → e+_e−

conversion process, or a single track leaving no hit in the innermost layer of the inner tracking detector. The photon energy calibration procedure is the same as in Ref. [3].

Photon candidates are required to fulfill identification criteria based on shower shapes in the electromagnetic calorimeter, and on energy leakage into the hadronic calorimeter [19]. Identification efficiencies, averaged over η, range from 70% to above 99% for the ETrange under

consideration. To further reduce the background from jets, the calorimeter isolation transverse energy Eiso

T is

required to be smaller than 6 GeV, where Eiso T is

de-fined as the sum of transverse energies of the positive-energy topological clusters [20] within a cone of size ∆R =p(∆φ)2_{+ (∆η)}2_{= 0.4 around the photon}

candi-date. The core of the photon shower is excluded, and Eiso

T is corrected for the leakage of the photon shower into

the isolation cone. The contributions from the underly-ing event and pile-up are subtracted usunderly-ing the technique proposed in Ref. [21] and implemented as described in Ref. [22]. In addition, the track isolation, defined as the scalar sum of the pT of the primary vertex tracks with

pT> 1 GeV in a ∆R = 0.2 cone around the photon

can-didate, excluding the conversion tracks, is required to be smaller than 2.6 GeV.

The mγγ invariant mass is evaluated using the leading

photon (γ1) and subleading photon (γ2) energies

mea-sured in the calorimeter, the azimuthal angle ∆φ and the pseudorapidity ∆η separations between the photons determined from their positions in the calorimeter and the position of the reconstructed diphoton vertex [3].

After selection, the data sample consists of a con-tinuum background with dominantly γγ, γ–jet, jet–jet events and Drell–Yan (DY) production of electron pairs where both electrons are misidentified as photons. Two peaking backgrounds arise from the Z boson component of the DY and from H → γγ.

To increase the sensitivity, the search is split into two analyses: a categorized low-mass analysis covering the range 65 < mX < 110 GeV, and an inclusive high-mass

analysis covering 110 < mX < 600 GeV. To provide

sidebands on both sides of the tested mass point mX,

the mγγ ranges are wider than the mX ranges probed

and overlap at the transition between the two analyses. The low-mass analysis requires a precise modeling of the DY background, dominated by the Z boson reso-nance, where both electrons are misidentified as photons, mostly classified as converted photons. The loss of sig-nal sensitivity is mitigated by separating the events into three categories with different signal-to-background ra-tios, according to the conversion status of the photon pair: two unconverted (UU), one converted and one un-converted (CU) or two un-converted photons (CC). TableI

shows the fractions of signal and DY events expected in each category.

TABLE I. Number of diphoton events in data (Ndata), number

of expected Drell–Yan events (NDY), fractions of expected

signal (fX) and Drell–Yan (fDY) in each conversion category

for the low-mass analysis. The signal fraction is given for mX= 90 GeV but the mass-dependence is negligible.

γγcategory UU CU CC

Ndata 272184 253804 63224

NDY 1080 ± 260 3400 ± 600 2700 ± 250

fDY 15.0% 47.3% 37.7%

fX 48.7% 42.5% 8.8%

In each category, the Z resonance shape is described by a double-sided Crystal Ball function [23]. Due to the limited size of the fully simulated Z → ee sample [24,25] where both electrons are misidentified as photons, the shape parameters are determined by a fit to a dielectron data sample, where both electrons are required to ful-fill shower shape identification criteria and the same ET

thresholds as the photons.

Since most of the electrons misidentified as photons underwent large bremsstrahlung, the invariant mass dis-tribution of the Z boson reconstructed as a photon pair

Invariant Mass [GeV] 70 75 80 85 90 95 100 105 110 Arbitrary Units 0 0.2 0.4 0.6 0.8 1 1.2 ee POWHEG → Z ee γ γ ) γ γ → transf. ee (ee CC category ATLAS Simulation

FIG. 1. Invariant mass distributions in the CC category for fully simulated Z → ee events reconstructed as ee (dotted-lines), reconstructed as γγ (squares), and reconstructed as ee after transforming the electrons to match the kinematics of the electrons misidentified as converted photons (circles).

is wider and shifted to lower masses by up to 2 GeV with respect to the Z boson mass reconstructed as an electron pair. The Z → ee invariant mass distributions extracted from data in each category are transformed by applying ET-dependent shifts and smearing factors to

the electron ET and φ, to match the kinematics of the

electrons misidentified as photons. Two sets of trans-formations are derived for γ1 and γ2depending on their

conversion status, using a Z → ee sample generated with powheg_{[26,27] interfaced with pythia8 [28] for} show-ering and hadronization. Figure 1 illustrates the effect of the electrons’ transformations on the invariant mass shapes in the fully simulated Z → ee sample. System-atic uncertainties on the template shapes and the Z peak position are evaluated by varying the parameters of the electrons’ transformations by ±1σ.

The DY normalization is computed from the e → γ fake rates, defined as the ratios of eγ to ee pairs mea-sured in Z → ee data, separately for γ1and γ2 and each

conversion status. A correction factor obtained from fully simulated Z → ee events is applied to account for addi-tional effects, mainly the differences in isolation efficien-cies and vertex reconstruction efficiency between γγ and ee events. The associated uncertainties (9 to 25%) are dominated by the subtraction of the continuum back-ground and the detector material description.

The determination of the analytical form of the contin-uum background and the corresponding uncertainties fol-low the method detailed in Ref. [1]. The sum of a Landau distribution and an exponential distribution is used over the full mγγ range. The bias on the signal yield induced

by the analytical shape function is required to be lower than 20% of the statistical uncertainty on the fitted

sig-nal yield for the background-only spectrum. This bias is measured from a large sample generated from a parame-terized detector response, and is accounted for by a mass-dependent uncertainty. Figure2shows background-only fits to the data in the low-mass analysis for the three conversion categories. 60 70 80 90 100 110 120 Events / 2 GeV 5000 10000 15000 20000 UU category Data Continuum+DY fit

Continuum component of the fit

60 70 80 90 100 110 120 5000 10000 15000 CU category Data Continuum+DY fit

Continuum component of the fit

[GeV] γ γ m 60 70 80 90 100 110 120 1000 2000 3000 4000 CC category Data Continuum+DY fit

Continuum component of the fit

ATLAS

-1 Ldt = 20.3 fb ∫ = 8 TeV, s

FIG. 2. Background-only fits to the data (black dots) as func-tions of the diphoton invariant mass mγγ for the three

con-version categories in the low-mass range. The solid lines show the sum of the Drell–Yan and the continuum background com-ponents. The dashed lines show the continuum background component only.

In the high-mass analysis, relative cuts Eγ1

T/mγγ > 0.4

and Eγ2

T/mγγ > 0.3 are added to the selection

require-ments to reduce the continuum backgrounds and thereby increase the signal sensitivity. In total, 108654 events with 100 < mγγ < 800 GeV are selected.

To determine the continuum background shape over this large mass range, an exponential of a second-order polynomial is fitted inside a sliding mγγ window of

width 80 · (mX− 110 GeV)/110 + 20 GeV, centered on

the mass point mX. The analytical shape and the fit

window width are chosen to fulfill the signal yield bias criterion, as defined for the low-mass analysis, to mini-mize the statistical uncertainty on the background.

The H background shape is modeled by a double-sided Crystal Ball function, and normalized for mH= 125.9 GeV [29][30] using the most up-to-date

Stan-dard Model cross-section calculations and corrections [31] of the five main production modes: gluon fusion (ggF), vector-boson fusion (VBF), Higgs-strahlung (W H, ZH), and associated production with a top quark pair (t¯tH). The ggF and VBF samples [3] are simulated with the powheg_{generator interfaced with pythia8. The W H,}

ZH and t¯tH samples [3] are simulated with pythia8. Figure 3 shows background-only fits to the data in the high-mass analysis. [GeV] γ γ m 100 200 300 400 500 600 700 ] -1 [GeV γγ dN / dm -1 10 1 10 2 10 3 10 Data = 125 GeV) X m Continuum+H fit ( = 250 GeV) X m Continuum+H fit ( = 500 GeV) X m Continuum+H fit ( -1 Ldt = 20.3 fb

∫

= 8 TeV, s ATLAS 115 120 125 130 135 600 800 1000 1200 1400 1600 1800 2000 2200 Data = 125 GeV) X m Continuum+H fit ( Continuum component of the fit

FIG. 3. Background-only fits to the data (black dots) as functions of the diphoton invariant mass mγγ for the

inclu-sive high-mass analysis. The solid line shows the sum of the Higgs boson and the continuum background components. The dashed line shows the continuum background component only.

The expected invariant mass distribution of the narrow resonance signal X is also modeled with a double-sided Crystal Ball function in the mass range 65 ≤ mX ≤ 600 GeV, using fully simulated ggF(X)

samples generated as for H, where H is replaced by a scalar boson with a constant width of 4 MeV. Polyno-mial parameterizations of the signal shape parameters as a function of mX are obtained from a simultaneous

fit to all the generated mass points mX, separately for

the high-mass analysis and the three low-mass analysis categories. The signal shape parameters extracted from ggF(X) are compared to the other production modes VBF(X), W X, ZX and t¯tX; the bias on the signal yield due to the choice of ggF(X) shape is negligible. The systematic uncertainty on the signal shape due to the photon energy resolution uncertainty ranges from 10% to 40% as a function of mX [3]. The systematic

uncer-tainty on the X peak position due to the photon energy scale uncertainty is 0.6% [3].

The fiducial cross-section σfid· BR(X → γγ) includes

an efficiency correction factor CX through

σfid· BR(X → γγ) = Ndata CX· L with CX = Nreco MC Nfid MC , where Ndatais the number of fitted signal events in data,

Nreco

MC the number of simulated signal events passing the

selection criteria and Nfid

MCthe number of simulated signal

events generated within the fiducial volume. The fidu-cial volume, defined from geometrical and kinematical constraints at the generated particle level, is optimized to reduce the model-dependence of CX using fully

[GeV] X m 100 200 300 400 500 600 BR [fb] ⋅ fid σ 95% CL limit on -1 10 1 10 2 10 3 10 ATLAS -1 Ldt = 20.3 fb

∫

= 8 TeV, s Observed Expected σ 1 ± σ 2 ± 60 80 100 120 140 160 50 100

FIG. 4. Observed and expected 95% CL limit on the fiducial cross-section times branching ratio BR(X → γγ) as a function of mX in the range 65 < mX < 600 GeV. The discontinuity in the limit at mX = 110 GeV (vertical dashed line) is due to the

transition between the low-mass and high-mass analyses. The green and yellow bands show the ±1σ and ±2σ uncertainties on the expected limit. The inset shows a zoom around the transition point.

a large variety of topologies. The photon selection at generation level is similar to the selection applied to the data: two photons with ET> 22 GeV and |η| < 2.37 are

required; for mX greater than 110 GeV, the relative cuts

Eγ1

T/mγγ > 0.4 and EγT2/mγγ > 0.3 are imposed. The

particle isolation, defined as the scalar sum of pT of all

the stable particles (except neutrinos) found within a ∆R = 0.4 cone around the photon direction, is required to be less than 12 GeV. The CX factor is parameterized

from the ggF(X) samples, and ranges from 0.56 to 0.71 as a function of mX. Systematic uncertainties include

the maximum difference between the CX of the five

pro-duction modes, the effect of the underlying event (U.E.) and pile-up.

The statistical analysis of the data uses unbinned max-imum likelihood fits. The DY and H shapes and normal-izations are allowed to float within the uncertainties. In the low-mass analysis, a simultaneous fit to the three conversion categories is performed. Only two excesses with 2.1σ and 2.2σ local significances above the back-ground are observed over the full mass range 65–600 GeV, for mX=201 GeV and mX=530 GeV respectivelly. This

corresponds to a deviation of less than 0.5σ from the background-only hypothesis. Consequently, a 95% limit on σfid· BR(X → γγ) is computed using the procedure

of Ref. [1]. The systematic uncertainties listed in Table

II are accounted for by nuisance parameters in the like-lihood function. In the low-mass analysis, the dominant uncertainties are the DY normalization and the residual topology dependence of CX. In the high-mass analysis,

the largest uncertainties arise from the energy resolution and the theoretical uncertainty on the production rate of the Standard Model Higgs boson around 126 GeV.

TABLE II. Summary of the systematic uncertainties

Signal and Higgs boson yield Z component of Drell–Yan

Luminosity 2.8% Normalizationb

9–25%

Trigger 0.5% Peak positionb

1.5–3.5% γidentificationa

1.6–2.7% Template shapeb

1.5–3% γisolationa

1–6% Higgs boson background

Energy resolutiona b

10–40% Cross-sectionc

9.6%

Signal and Higgs boson peak position Branching ratio 4.8%

Energy scale 0.6% CX factor

Continuum γγ, γj, jj, DY Topologya

3–15% Signal biasa

1–67 events Pile-up & U. E.a

1.4–3.2% a mass-dependent. b category-dependent. c

factorization scale + PDF uncertainties [31].

The observed and expected limits, shown in Fig.4, are in good agreement, consistent with the absence of a sig-nal. The limits on σfid· BR(X → γγ) for an additional

scalar resonance range from 90 fb for mX= 65 GeV to

1 fb for mX= 600 GeV. These results extend over a

con-siderably wider mass range than the previous searches by the ATLAS and CMS collaborations [1,35], are comple-mentary to spin-2 particles searches [36,37], and are the first such limits independent of the event topology.

We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC,

China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, 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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M. Arratia28, O. Arslan21, A. Artamonov96, G. Artoni23, S. Asai154, N. Asbah42, A. Ashkenazi152,

B. ˚Asman145a,145b, L. Asquith6, K. Assamagan25, R. Astalos143a, M. Atkinson164, N.B. Atlay140, B. Auerbach6, K. Augsten127, M. Aurousseau144b, G. Avolio30, G. Azuelos94,e, Y. Azuma154, M.A. Baak30, A.E. Baas57a, H. Bachacou135_{, K. Bachas}153_{, M. Backes}30_{, M. Backhaus}30_{, J. Backus Mayes}142_{, E. Badescu}26a_,

P. Bagiacchi131a,131b_{, P. Bagnaia}131a,131b_{, Y. Bai}33a_{, T. Bain}35_{, J.T. Baines}130_{, O.K. Baker}175_{, P. Balek}128_,

F. Balli135_{, E. Banas}39_{, Sw. Banerjee}172_{, A.A.E. Bannoura}174_{, H.S. Bansil}18_{, L. Barak}171_{, E.L. Barberio}87_,

D. Barberis50a,50b_{, M. Barbero}84_{, T. Barillari}100_{, M. Barisonzi}174_{, T. Barklow}142_{, N. Barlow}28_{, S.L. Barnes}83_,

B.M. Barnett130_{, R.M. Barnett}15_{, Z. Barnovska}5_{, A. Baroncelli}133a_{, G. Barone}49_{, A.J. Barr}119_{, F. Barreiro}81_,

J. Barreiro Guimar˜aes da Costa56_{, R. Bartoldus}142_{, A.E. Barton}71_{, P. Bartos}143a_{, V. Bartsch}148_{, A. Bassalat}116_,

A. Basye164_{, R.L. Bates}53_{, J.R. Batley}28_{, M. Battaglia}136_{, M. Battistin}30_{, F. Bauer}135_{, H.S. Bawa}142,f_,

M.D. Beattie71_{, T. Beau}79_{, P.H. Beauchemin}160_{, P. Bechtle}21_{, H.P. Beck}17_{, K. Becker}174_{, S. Becker}99_,

M. Beckingham169_{, C. Becot}116_{, A.J. Beddall}19c_{, A. Beddall}19c_{, S. Bedikian}175_{, V.A. Bednyakov}64_{, C.P. Bee}147_,

L.J. Beemster106_{, T.A. Beermann}174_{, M. Begel}25_{, K. Behr}119_{, C. Belanger-Champagne}86_{, P.J. Bell}49_{, W.H. Bell}49_,

G. Bella152_{, L. Bellagamba}20a_{, A. Bellerive}29_{, M. Bellomo}85_{, K. Belotskiy}97_{, O. Beltramello}30_{, O. Benary}152_,

D. Benchekroun134a_{, K. Bendtz}145a,145b_{, N. Benekos}164_{, Y. Benhammou}152_{, E. Benhar Noccioli}49_,

J.A. Benitez Garcia158b_{, D.P. Benjamin}45_{, J.R. Bensinger}23_{, S. Bentvelsen}106_{, D. Berge}106_,

E. Bergeaas Kuutmann16_{, N. Berger}5_{, F. Berghaus}168_{, J. Beringer}15_{, C. Bernard}22_{, P. Bernat}77_{, C. Bernius}78_,

F.U. Bernlochner168_{, T. Berry}76_{, P. Berta}128_{, C. Bertella}82_{, G. Bertoli}145a,145b_{, F. Bertolucci}123a,123b_,

C. Bertsche112_{, D. Bertsche}112_{, M.I. Besana}90a_{, G.J. Besjes}105_{, O. Bessidskaia}145a,145b_{, M. Bessner}42_{, N. Besson}135_,

C. Betancourt48_{, S. Bethke}100_{, W. Bhimji}46_{, R.M. Bianchi}124_{, L. Bianchini}23_{, M. Bianco}30_{, O. Biebel}99_,

S.P. Bieniek77_{, K. Bierwagen}54_{, J. Biesiada}15_{, M. Biglietti}133a_{, J. Bilbao De Mendizabal}49_{, H. Bilokon}47_{, M. Bindi}54_,

S. Binet116_{, A. Bingul}19c_{, C. Bini}131a,131b_{, C.W. Black}149_{, J.E. Black}142_{, K.M. Black}22_{, D. Blackburn}137_,

R.E. Blair6_{, J.-B. Blanchard}135_{, T. Blazek}143a_{, I. Bloch}42_{, C. Blocker}23_{, U. Blumenschein}54_{, G.J. Bobbink}106_,

V.S. Bobrovnikov108,c_{, S.S. Bocchetta}80_{, A. Bocci}45_{, C. Bock}99_{, C.R. Boddy}119_{, M. Boehler}48_{, T.T. Boek}174_,

A.G. Bogdanchikov108_{, C. Bohm}145a_{, V. Boisvert}76_{, T. Bold}38a_{, A.S. Boldyrev}98_{, M. Bomben}79_{, M. Bona}75_,

M. Boonekamp135_{, A. Borisov}129_{, G. Borissov}71_{, M. Borri}83_{, S. Borroni}42_{, J. Bortfeldt}99_{, V. Bortolotto}59a_,

D. Boscherini20a_{, M. Bosman}12_{, H. Boterenbrood}106_{, J. Boudreau}124_{, J. Bouffard}2_{, E.V. Bouhova-Thacker}71_,

D. Boumediene34_{, C. Bourdarios}116_{, N. Bousson}113_{, S. Boutouil}134d_{, A. Boveia}31_{, J. Boyd}30_{, I.R. Boyko}64_,

I. Bozic13a_{, J. Bracinik}18_{, A. Brandt}8_{, G. Brandt}15_{, O. Brandt}57a_{, U. Bratzler}155_{, B. Brau}85_{, J.E. Brau}115_,

S.F. Brazzale163a,163c, B. Brelier157, K. Brendlinger121, A.J. Brennan87, R. Brenner165, S. Bressler171, K. Bristow144c, T.M. Bristow46, D. Britton53, F.M. Brochu28, I. Brock21, R. Brock89, J. Bronner100, G. Brooijmans35, T. Brooks76, W.K. Brooks32b, J. Brosamer15, E. Brost115, J. Brown55, P.A. Bruckman de Renstrom39, D. Bruncko143b,

R. Bruneliere48_{, S. Brunet}60_{, A. Bruni}20a_{, G. Bruni}20a_{, M. Bruschi}20a_{, L. Bryngemark}80_{, T. Buanes}14_{, Q. Buat}141_,

F. Bucci49_{, P. Buchholz}140_{, A.G. Buckley}53_{, S.I. Buda}26a_{, I.A. Budagov}64_{, F. Buehrer}48_{, L. Bugge}118_,

M.K. Bugge118_{, O. Bulekov}97_{, A.C. Bundock}73_{, S. Burdin}73_{, B. Burghgrave}107_{, S. Burke}130_{, I. Burmeister}43_,

E. Busato34_{, D. B¨uscher}48_{, V. B¨uscher}82_{, P. Bussey}53_{, C.P. Buszello}165_{, B. Butler}56_{, J.M. Butler}22_{, A.I. Butt}3_,

C.M. Buttar53_{, J.M. Butterworth}77_{, P. Butti}106_{, W. Buttinger}28_{, A. Buzatu}53_{, M. Byszewski}10_,

S. Cabrera Urb´an166_{, D. Caforio}20a,20b_{, O. Cakir}4a_{, P. Calafiura}15_{, A. Calandri}135_{, G. Calderini}79_{, P. Calfayan}99_,

L.M. Caminada15_{, R. Caminal Armadans}12_{, S. Campana}30_{, M. Campanelli}77_{, A. Campoverde}147_{, V. Canale}103a,103b_,

A. Canepa158a_{, M. Cano Bret}75_{, J. Cantero}81_{, R. Cantrill}125a_{, T. Cao}40_{, M.D.M. Capeans Garrido}30_{, I. Caprini}26a_,

M. Caprini26a, M. Capua37a,37b, R. Caputo82, R. Cardarelli132a, T. Carli30, G. Carlino103a, L. Carminati90a,90b, S. Caron105, E. Carquin32a, G.D. Carrillo-Montoya144c, J.R. Carter28, D. Casadei77, M.P. Casado12, M. Casolino12, E. Castaneda-Miranda144b, A. Castelli106, V. Castillo Gimenez166, N.F. Castro125a, P. Catastini56, A. Catinaccio30, J.R. Catmore118_{, A. Cattai}30_{, G. Cattani}132a,132b_{, J. Caudron}82_{, V. Cavaliere}164_{, D. Cavalli}90a_{, M. Cavalli-Sforza}12_,

V. Cavasinni123a,123b_{, F. Ceradini}133a,133b_{, B.C. Cerio}45_{, K. Cerny}128_{, A.S. Cerqueira}24b_{, A. Cerri}148_{, L. Cerrito}75_,

F. Cerutti15_{, M. Cerv}30_{, A. Cervelli}17_{, S.A. Cetin}19b_{, A. Chafaq}134a_{, D. Chakraborty}107_{, I. Chalupkova}128_,

P. Chang164_{, B. Chapleau}86_{, J.D. Chapman}28_{, D. Charfeddine}116_{, D.G. Charlton}18_{, C.C. Chau}157_,

C.A. Chavez Barajas148_{, S. Cheatham}86_{, A. Chegwidden}89_{, S. Chekanov}6_{, S.V. Chekulaev}158a_{, G.A. Chelkov}64,g_,

M.A. Chelstowska88_{, C. Chen}63_{, H. Chen}25_{, K. Chen}147_{, L. Chen}33d,h_{, S. Chen}33c_{, X. Chen}33f_{, Y. Chen}66_,

H.C. Cheng88_{, Y. Cheng}31_{, A. Cheplakov}64_{, R. Cherkaoui El Moursli}134e_{, E. Cheu}7_{, L. Chevalier}135_{, V. Chiarella}47_,

G. Chiefari103a,103b_{, J.T. Childers}6_{, A. Chilingarov}71_{, G. Chiodini}72a_{, A.S. Chisholm}18_{, R.T. Chislett}77_,

A. Chitan26a_{, M.V. Chizhov}64_{, S. Chouridou}9_{, B.K.B. Chow}99_{, J. Chudoba}126_{, J.J. Chwastowski}39_{, L. Chytka}114_,

A.K. Ciftci4a_{, R. Ciftci}4a_{, D. Cinca}53_{, V. Cindro}74_{, A. Ciocio}15_{, Z.H. Citron}171_{, M. Ciubancan}26a_{, A. Clark}49_,

P.J. Clark46_{, R.N. Clarke}15_{, J.C. Clemens}84_{, C. Clement}145a,145b_{, Y. Coadou}84_{, M. Cobal}163a,163c_{, A. Coccaro}137_,

J. Cochran63_{, L. Coffey}23_{, J.G. Cogan}142_{, B. Cole}35_{, S. Cole}107_{, A.P. Colijn}106_{, J. Collot}55_{, T. Colombo}57c_,

G. Compostella100_{, P. Conde Mui˜no}125a,125b_{, E. Coniavitis}48_{, S.H. Connell}144b_{, I.A. Connelly}76_,

S.M. Consonni90a,90b_{, V. Consorti}48_{, S. Constantinescu}26a_{, G. Conti}56_{, F. Conventi}103a,i_{, M. Cooke}15_,

B.D. Cooper77_{, A.M. Cooper-Sarkar}119_{, N.J. Cooper-Smith}76_{, K. Copic}15_{, T. Cornelissen}174_{, M. Corradi}20a_,

F. Corriveau86,j_{, A. Cortes-Gonzalez}12_{, G. Cortiana}100_{, G. Costa}90a_{, M.J. Costa}166_{, D. Costanzo}138_{, D. Cˆot´e}8_,

G. Cottin28_{, G. Cowan}76_{, B.E. Cox}83_{, K. Cranmer}109_{, G. Cree}29_{, S. Cr´ep´e-Renaudin}55_{, F. Crescioli}79_,

W.A. Cribbs145a,145b_{, M. Crispin Ortuzar}119_{, M. Cristinziani}21_{, V. Croft}105_{, G. Crosetti}37a,37b_{, C.-M. Cuciuc}26a_,

T. Cuhadar Donszelmann138_{, J. Cummings}175_{, M. Curatolo}47_{, C. Cuthbert}149_{, H. Czirr}140_{, P. Czodrowski}3_,

S. D’Auria53_{, M. D’Onofrio}73_{, M.J. Da Cunha Sargedas De Sousa}125a,125b_{, C. Da Via}83_{, W. Dabrowski}38a_,

A. Dafinca119_{, T. Dai}88_{, O. Dale}14_{, F. Dallaire}94_{, C. Dallapiccola}85_{, M. Dam}36_{, A.C. Daniells}18_,

M. Dano Hoffmann135_{, V. Dao}48_{, G. Darbo}50a_{, S. Darmora}8_{, J.A. Dassoulas}42_{, A. Dattagupta}60_{, W. Davey}21_,

C. David168_{, T. Davidek}128_{, E. Davies}119,d_{, M. Davies}152_{, O. Davignon}79_{, A.R. Davison}77_{, P. Davison}77_,

Y. Davygora57a_{, E. Dawe}141_{, I. Dawson}138_{, R.K. Daya-Ishmukhametova}85_{, K. De}8_{, R. de Asmundis}103a_,

S. De Castro20a,20b_{, S. De Cecco}79_{, N. De Groot}105_{, P. de Jong}106_{, H. De la Torre}81_{, F. De Lorenzi}63_,

L. De Nooij106_{, D. De Pedis}131a_{, A. De Salvo}131a_{, U. De Sanctis}148_{, A. De Santo}148_{, J.B. De Vivie De Regie}116_,

W.J. Dearnaley71_{, R. Debbe}25_{, C. Debenedetti}136_{, B. Dechenaux}55_{, D.V. Dedovich}64_{, I. Deigaard}106_{, J. Del Peso}81_,

F. Deliot135_{, C.M. Delitzsch}49_{, M. Deliyergiyev}74_{, A. Dell’Acqua}30_{, L. Dell’Asta}22_{, M. Dell’Orso}123a,123b_,

M. Della Pietra103a,i_{, D. della Volpe}49_{, M. Delmastro}5_{, P.A. Delsart}55_{, C. Deluca}106_{, S. Demers}175_{, M. Demichev}64_,

A. Demilly79_{, S.P. Denisov}129_{, D. Derendarz}39_{, J.E. Derkaoui}134d_{, F. Derue}79_{, P. Dervan}73_{, K. Desch}21_,

C. Deterre42_{, P.O. Deviveiros}30_{, A. Dewhurst}130_{, S. Dhaliwal}106_{, A. Di Ciaccio}132a,132b_{, L. Di Ciaccio}5_,

A. Di Domenico131a,131b_{, C. Di Donato}103a,103b_{, A. Di Girolamo}30_{, B. Di Girolamo}30_{, A. Di Mattia}151_,

B. Di Micco133a,133b_{, R. Di Nardo}47_{, A. Di Simone}48_{, R. Di Sipio}20a,20b_{, D. Di Valentino}29_{, F.A. Dias}46_,

M.A. Diaz32a_{, E.B. Diehl}88_{, J. Dietrich}16_{, T.A. Dietzsch}57a_{, S. Diglio}84_{, A. Dimitrievska}13a_{, J. Dingfelder}21_,

P. Dita26a_{, S. Dita}26a_{, F. Dittus}30_{, F. Djama}84_{, T. Djobava}51b_{, M.A.B. do Vale}24c_{, D. Dobos}30_{, C. Doglioni}49_,

T. Doherty53_{, T. Dohmae}154_{, J. Dolejsi}128_{, Z. Dolezal}128_{, M. Donadelli}24d_{, S. Donati}123a,123b_{, P. Dondero}120a,120b_,

J. Donini34_{, J. Dopke}130_{, A. Doria}103a_{, M.T. Dova}70_{, A.T. Doyle}53_{, M. Dris}10_{, J. Dubbert}88_{, S. Dube}15_,

E. Dubreuil34_{, E. Duchovni}171_{, G. Duckeck}99_{, O.A. Ducu}26a_{, D. Duda}174_{, A. Dudarev}30_{, F. Dudziak}63_{, L. Duflot}116_,

L. Duguid76_{, M. D¨uhrssen}30_{, M. Dunford}57a_{, H. Duran Yildiz}4a_{, M. D¨uren}52_{, A. Durglishvili}51b_{, M. Dwuznik}38a_,

M. Dyndal38a_{, J. Ebke}99_{, W. Edson}2_{, N.C. Edwards}46_{, W. Ehrenfeld}21_{, T. Eifert}142_{, G. Eigen}14_{, K. Einsweiler}15_,

T. Ekelof165_{, M. El Kacimi}134c_{, M. Ellert}165_{, S. Elles}5_{, F. Ellinghaus}82_{, N. Ellis}30_{, J. Elmsheuser}99_{, M. Elsing}30_,

D. Emeliyanov130_{, Y. Enari}154_{, O.C. Endner}82_{, M. Endo}117_{, J. Erdmann}175_{, A. Ereditato}17_{, G. Ernis}174_{, J. Ernst}2_,

M. Ernst25, J. Ernwein135, D. Errede164, S. Errede164, E. Ertel82, M. Escalier116, H. Esch43, C. Escobar124, B. Esposito47_{, A.I. Etienvre}135_{, E. Etzion}152_{, H. Evans}60_{, A. Ezhilov}122_{, L. Fabbri}20a,20b_{, G. Facini}31_,

R.M. Fakhrutdinov129_{, S. Falciano}131a_{, R.J. Falla}77_{, J. Faltova}128_{, Y. Fang}33a_{, M. Fanti}90a,90b_{, A. Farbin}8_,

A. Farilla133a_{, T. Farooque}12_{, S. Farrell}15_{, S.M. Farrington}169_{, P. Farthouat}30_{, F. Fassi}134e_{, P. Fassnacht}30_,

D. Fassouliotis9_{, A. Favareto}50a,50b_{, L. Fayard}116_{, P. Federic}143a_{, O.L. Fedin}122,k_{, W. Fedorko}167_{, S. Feigl}30_,

L. Feligioni84_{, C. Feng}33d_{, E.J. Feng}6_{, H. Feng}88_{, A.B. Fenyuk}129_{, S. Fernandez Perez}30_{, S. Ferrag}53_{, J. Ferrando}53_,

A. Ferrari165_{, P. Ferrari}106_{, R. Ferrari}120a_{, D.E. Ferreira de Lima}53_{, A. Ferrer}166_{, D. Ferrere}49_{, C. Ferretti}88_,

A. Ferretto Parodi50a,50b_{, M. Fiascaris}31_{, F. Fiedler}82_{, A. Filipˇciˇc}74_{, M. Filipuzzi}42_{, F. Filthaut}105_,

W.C. Fisher89_{, E.A. Fitzgerald}23_{, M. Flechl}48_{, I. Fleck}140_{, P. Fleischmann}88_{, S. Fleischmann}174_{, G.T. Fletcher}138_,

G. Fletcher75_{, T. Flick}174_{, A. Floderus}80_{, L.R. Flores Castillo}172,l_{, M.J. Flowerdew}100_{, A. Formica}135_{, A. Forti}83_,

D. Fortin158a, D. Fournier116, H. Fox71, S. Fracchia12, P. Francavilla79, M. Franchini20a,20b, S. Franchino30, D. Francis30, L. Franconi118, M. Franklin56, M. Fraternali120a,120b, S.T. French28, C. Friedrich42, F. Friedrich44, D. Froidevaux30, J.A. Frost28, C. Fukunaga155, E. Fullana Torregrosa82, B.G. Fulsom142, J. Fuster166,

C. Gabaldon55_{, O. Gabizon}171_{, A. Gabrielli}20a,20b_{, A. Gabrielli}131a,131b_{, S. Gadatsch}106_{, S. Gadomski}49_,

G. Gagliardi50a,50b_{, P. Gagnon}60_{, C. Galea}105_{, B. Galhardo}125a,125c_{, E.J. Gallas}119_{, B.J. Gallop}130_{, P. Gallus}127_,

G. Galster36_{, K.K. Gan}110_{, J. Gao}33b,h_{, Y.S. Gao}142,f_{, F.M. Garay Walls}46_{, F. Garberson}175_{, C. Garc´ıa}166_,

J.E. Garc´ıa Navarro166_{, M. Garcia-Sciveres}15_{, R.W. Gardner}31_{, N. Garelli}142_{, V. Garonne}30_{, C. Gatti}47_,

G. Gaudio120a_{, B. Gaur}140_{, L. Gauthier}94_{, I.L. Gavrilenko}95_{, C. Gay}167_{, G. Gaycken}21_{, E.N. Gazis}10_{, P. Ge}33d_,

Z. Gecse167_{, C.N.P. Gee}130_{, D.A.A. Geerts}106_{, Ch. Geich-Gimbel}21_{, C. Gemme}50a_{, A. Gemmell}53_{, M.H. Genest}55_,

S. Gentile131a,131b_{, M. George}54_{, S. George}76_{, D. Gerbaudo}162_{, A. Gershon}152_{, N. Ghodbane}34_{, B. Giacobbe}20a_,

S. Giagu131a,131b_{, V. Giangiobbe}12_{, P. Giannetti}123a,123b_{, F. Gianotti}30_{, S.M. Gibson}76_{, T.P.S. Gillam}28_,

D. Gillberg30_{, G. Gilles}34_{, D.M. Gingrich}3,e_{, N. Giokaris}9_{, M.P. Giordani}163a,163c_{, R. Giordano}103a,103b_,

F.M. Giorgi20a_{, F.M. Giorgi}16_{, P.F. Giraud}135_{, D. Giugni}90a_{, C. Giuliani}48_{, M. Giulini}57b_{, B.K. Gjelsten}118_,

S. Gkaitatzis153_{, I. Gkialas}153,m_{, E.L. Gkougkousis}116_{, L.K. Gladilin}98_{, C. Glasman}81_{, J. Glatzer}30_,

P.C.F. Glaysher46_{, A. Glazov}42_{, G.L. Glonti}61_{, M. Goblirsch-Kolb}100_{, J.R. Goddard}75_{, J. Godlewski}30_,

C. Goeringer82_{, S. Goldfarb}88_{, T. Golling}175_{, D. Golubkov}129_{, A. Gomes}125a,125b,125d_{, L.S. Gomez Fajardo}42_,

R. Gon¸calo125a_{, J. Goncalves Pinto Firmino Da Costa}135_{, L. Gonella}21_{, S. Gonz´alez de la Hoz}166_,

G. Gonzalez Parra12_{, S. Gonzalez-Sevilla}49_{, L. Goossens}30_{, P.A. Gorbounov}96_{, H.A. Gordon}25_{, I. Gorelov}104_,

B. Gorini30_{, E. Gorini}72a,72b_{, A. Goriˇsek}74_{, E. Gornicki}39_{, A.T. Goshaw}45_{, C. G¨ossling}43_{, M.I. Gostkin}64_,

M. Gouighri134a_{, D. Goujdami}134c_{, M.P. Goulette}49_{, A.G. Goussiou}137_{, C. Goy}5_{, H.M.X. Grabas}136_{, L. Graber}54_,

I. Grabowska-Bold38a_{, P. Grafstr¨om}20a,20b_{, K-J. Grahn}42_{, J. Gramling}49_{, E. Gramstad}118_{, S. Grancagnolo}16_,

V. Grassi147_{, V. Gratchev}122_{, H.M. Gray}30_{, E. Graziani}133a_{, O.G. Grebenyuk}122_{, Z.D. Greenwood}78,n_,

K. Gregersen77_{, I.M. Gregor}42_{, P. Grenier}142_{, J. Griffiths}8_{, A.A. Grillo}136_{, K. Grimm}71_{, S. Grinstein}12,o_{, Ph. Gris}34_,

Y.V. Grishkevich98_{, J.-F. Grivaz}116_{, J.P. Grohs}44_{, A. Grohsjean}42_{, E. Gross}171_{, J. Grosse-Knetter}54_,

G.C. Grossi132a,132b_{, J. Groth-Jensen}171_{, Z.J. Grout}148_{, L. Guan}33b_{, F. Guescini}49_{, D. Guest}175_{, O. Gueta}152_,

C. Guicheney34_{, E. Guido}50a,50b_{, T. Guillemin}116_{, S. Guindon}2_{, U. Gul}53_{, C. Gumpert}44_{, J. Gunther}127_{, J. Guo}35_,

S. Gupta119_{, P. Gutierrez}112_{, N.G. Gutierrez Ortiz}53_{, C. Gutschow}77_{, N. Guttman}152_{, C. Guyot}135_{, C. Gwenlan}119_,

C.B. Gwilliam73_{, A. Haas}109_{, C. Haber}15_{, H.K. Hadavand}8_{, N. Haddad}134e_{, P. Haefner}21_{, S. Hageb¨ock}21_,

H. Hakobyan176_{, M. Haleem}42_{, D. Hall}119_{, G. Halladjian}89_{, G.D. Hallewell}84_{, K. Hamacher}174_{, P. Hamal}114_,

K. Hamano168_{, M. Hamer}54_{, A. Hamilton}144a_{, S. Hamilton}160_{, G.N. Hamity}144c_{, P.G. Hamnett}42_{, L. Han}33b_,

K. Hanagaki117_{, K. Hanawa}154_{, M. Hance}15_{, P. Hanke}57a_{, R. Hanna}135_{, J.B. Hansen}36_{, J.D. Hansen}36_,

P.H. Hansen36_{, K. Hara}159_{, A.S. Hard}172_{, T. Harenberg}174_{, F. Hariri}116_{, S. Harkusha}91_{, D. Harper}88_,

R.D. Harrington46_{, O.M. Harris}137_{, P.F. Harrison}169_{, M. Hasegawa}66_{, S. Hasegawa}102_{, Y. Hasegawa}139_{, A. Hasib}112_,

S. Hassani135_{, S. Haug}17_{, M. Hauschild}30_{, R. Hauser}89_{, M. Havranek}126_{, C.M. Hawkes}18_{, R.J. Hawkings}30_,

A.D. Hawkins80_{, T. Hayashi}159_{, D. Hayden}89_{, C.P. Hays}119_{, H.S. Hayward}73_{, S.J. Haywood}130_{, S.J. Head}18_,

T. Heck82_{, V. Hedberg}80_{, L. Heelan}8_{, S. Heim}121_{, T. Heim}174_{, B. Heinemann}15_{, L. Heinrich}109_{, J. Hejbal}126_,

L. Helary22_{, C. Heller}99_{, M. Heller}30_{, S. Hellman}145a,145b_{, D. Hellmich}21_{, C. Helsens}30_{, J. Henderson}119_,

R.C.W. Henderson71_{, Y. Heng}172_{, C. Hengler}42_{, A. Henrichs}175_{, A.M. Henriques Correia}30_{, S. Henrot-Versille}116_,

G.H. Herbert16_{, Y. Hern´andez Jim´enez}166_{, R. Herrberg-Schubert}16_{, G. Herten}48_{, R. Hertenberger}99_{, L. Hervas}30_,

G.G. Hesketh77_{, N.P. Hessey}106_{, R. Hickling}75_{, E. Hig´on-Rodriguez}166_{, E. Hill}168_{, J.C. Hill}28_{, K.H. Hiller}42_,

S.J. Hillier18_{, I. Hinchliffe}15_{, E. Hines}121_{, M. Hirose}156_{, D. Hirschbuehl}174_{, J. Hobbs}147_{, N. Hod}106_,

M.C. Hodgkinson138_{, P. Hodgson}138_{, A. Hoecker}30_{, M.R. Hoeferkamp}104_{, F. Hoenig}99_{, D. Hoffmann}84_,

J.I. Hofmann57a_{, M. Hohlfeld}82_{, T.R. Holmes}15_{, T.M. Hong}121_{, L. Hooft van Huysduynen}109_{, W.H. Hopkins}115_,

Y. Horii102_{, J-Y. Hostachy}55_{, S. Hou}150_{, A. Hoummada}134a_{, J. Howard}119_{, J. Howarth}42_{, M. Hrabovsky}114_,

I. Hristova16_{, J. Hrivnac}116_{, T. Hryn’ova}5_{, C. Hsu}144c_{, P.J. Hsu}82_{, S.-C. Hsu}137_{, D. Hu}35_{, X. Hu}25_{, Y. Huang}42_,

Z. Hubacek30, F. Hubaut84, F. Huegging21, T.B. Huffman119, E.W. Hughes35, G. Hughes71, M. Huhtinen30, T.A. H¨ulsing82_{, M. Hurwitz}15_{, N. Huseynov}64,b_{, J. Huston}89_{, J. Huth}56_{, G. Iacobucci}49_{, G. Iakovidis}10_,

I. Ibragimov140_{, L. Iconomidou-Fayard}116_{, E. Ideal}175_{, Z. Idrissi}134e_{, P. Iengo}103a_{, O. Igonkina}106_{, T. Iizawa}170_,

Y. Ikegami65_{, K. Ikematsu}140_{, M. Ikeno}65_{, Y. Ilchenko}31_{, D. Iliadis}153_{, N. Ilic}157_{, Y. Inamaru}66_{, T. Ince}100_,

P. Ioannou9_{, M. Iodice}133a_{, K. Iordanidou}9_{, V. Ippolito}56_{, A. Irles Quiles}166_{, C. Isaksson}165_{, M. Ishino}67_,

M. Ishitsuka156_{, R. Ishmukhametov}110_{, C. Issever}119_{, S. Istin}19a_{, J.M. Iturbe Ponce}83_{, R. Iuppa}132a,132b_,

J. Ivarsson80_{, W. Iwanski}39_{, H. Iwasaki}65_{, J.M. Izen}41_{, V. Izzo}103a_{, B. Jackson}121_{, M. Jackson}73_{, P. Jackson}1_,

M.R. Jaekel30_{, V. Jain}2_{, K. Jakobs}48_{, S. Jakobsen}30_{, T. Jakoubek}126_{, J. Jakubek}127_{, D.O. Jamin}150_{, D.K. Jana}78_,

J. Jejelava51a,p_{, G.-Y. Jeng}149_{, D. Jennens}87_{, P. Jenni}48,q_{, J. Jentzsch}43_{, C. Jeske}169_{, S. J´ez´equel}5_{, H. Ji}172_,

J. Jia147_{, Y. Jiang}33b_{, M. Jimenez Belenguer}42_{, S. Jin}33a_{, A. Jinaru}26a_{, O. Jinnouchi}156_{, M.D. Joergensen}36_,

K.E. Johansson145a,145b, P. Johansson138, K.A. Johns7, K. Jon-And145a,145b, G. Jones169, R.W.L. Jones71, T.J. Jones73, J. Jongmanns57a, P.M. Jorge125a,125b, K.D. Joshi83, J. Jovicevic146, X. Ju172, C.A. Jung43, R.M. Jungst30, P. Jussel61, A. Juste Rozas12,o, M. Kaci166, A. Kaczmarska39, M. Kado116, H. Kagan110,

M. Kagan142_{, E. Kajomovitz}45_{, C.W. Kalderon}119_{, S. Kama}40_{, A. Kamenshchikov}129_{, N. Kanaya}154_{, M. Kaneda}30_,

S. Kaneti28_{, V.A. Kantserov}97_{, J. Kanzaki}65_{, B. Kaplan}109_{, A. Kapliy}31_{, D. Kar}53_{, K. Karakostas}10_,

N. Karastathis10_{, M.J. Kareem}54_{, M. Karnevskiy}82_{, S.N. Karpov}64_{, Z.M. Karpova}64_{, K. Karthik}109_,

V. Kartvelishvili71_{, A.N. Karyukhin}129_{, L. Kashif}172_{, G. Kasieczka}57b_{, R.D. Kass}110_{, A. Kastanas}14_{, Y. Kataoka}154_,

A. Katre49_{, J. Katzy}42_{, V. Kaushik}7_{, K. Kawagoe}69_{, T. Kawamoto}154_{, G. Kawamura}54_{, S. Kazama}154_,

V.F. Kazanin108_{, M.Y. Kazarinov}64_{, R. Keeler}168_{, R. Kehoe}40_{, J.S. Keller}42_{, J.J. Kempster}76_{, H. Keoshkerian}5_,

O. Kepka126_{, B.P. Kerˇsevan}74_{, S. Kersten}174_{, K. Kessoku}154_{, J. Keung}157_{, R.A. Keyes}86_{, F. Khalil-zada}11_,

H. Khandanyan145a,145b_{, A. Khanov}113_{, A. Khodinov}97_{, T.J. Khoo}28_{, G. Khoriauli}21_{, V. Khovanskiy}96_,

E. Khramov64_{, J. Khubua}51b_{, H.Y. Kim}8_{, H. Kim}145a,145b_{, S.H. Kim}159_{, N. Kimura}170_{, O. Kind}16_{, B.T. King}73_,

M. King166_{, R.S.B. King}119_{, S.B. King}167_{, J. Kirk}130_{, A.E. Kiryunin}100_{, T. Kishimoto}66_{, D. Kisielewska}38a_,

F. Kiss48_{, K. Kiuchi}159_{, E. Kladiva}143b_{, M. Klein}73_{, U. Klein}73_{, K. Kleinknecht}82_{, P. Klimek}145a,145b_,

A. Klimentov25_{, R. Klingenberg}43_{, J.A. Klinger}83_{, T. Klioutchnikova}30_{, E.-E. Kluge}57a_{, P. Kluit}106_{, S. Kluth}100_,

E. Kneringer61_{, E.B.F.G. Knoops}84_{, A. Knue}53_{, D. Kobayashi}156_{, T. Kobayashi}154_{, M. Kobel}44_{, M. Kocian}142_,

P. Kodys128_{, T. Koffas}29_{, E. Koffeman}106_{, L.A. Kogan}119_{, S. Kohlmann}174_{, Z. Kohout}127_{, T. Kohriki}65_{, T. Koi}142_,

H. Kolanoski16_{, I. Koletsou}5_{, J. Koll}89_{, Y. Komori}154_{, T. Kondo}65_{, N. Kondrashova}42_{, K. K¨oneke}48_{, A.C. K¨onig}105_,

S. K¨onig82_{, T. Kono}65,r_{, R. Konoplich}109,s_{, N. Konstantinidis}77_{, R. Kopeliansky}151_{, S. Koperny}38a_{, L. K¨opke}82_,

A.K. Kopp48_{, K. Korcyl}39_{, K. Kordas}153_{, A. Korn}77_{, A.A. Korol}108,c_{, I. Korolkov}12_{, E.V. Korolkova}138_,

V.A. Korotkov129_{, O. Kortner}100_{, S. Kortner}100_{, V.V. Kostyukhin}21_{, V.M. Kotov}64_{, A. Kotwal}45_,

A. Kourkoumeli-Charalampidi153_{, C. Kourkoumelis}9_{, V. Kouskoura}153_{, A. Koutsman}158a_{, R. Kowalewski}168_,

T.Z. Kowalski38a_{, W. Kozanecki}135_{, A.S. Kozhin}129_{, V.A. Kramarenko}98_{, G. Kramberger}74_{, D. Krasnopevtsev}97_,

M.W. Krasny79_{, A. Krasznahorkay}30_{, J.K. Kraus}21_{, A. Kravchenko}25_{, S. Kreiss}109_{, M. Kretz}57c_{, J. Kretzschmar}73_,

K. Kreutzfeldt52_{, P. Krieger}157_{, K. Kroeninger}54_{, H. Kroha}100_{, J. Kroll}121_{, J. Kroseberg}21_{, J. Krstic}13a_,

U. Kruchonak64_{, H. Kr¨uger}21_{, T. Kruker}17_{, N. Krumnack}63_{, Z.V. Krumshteyn}64_{, A. Kruse}172_{, M.C. Kruse}45_,

M. Kruskal22_{, T. Kubota}87_{, S. Kuday}4c_{, S. Kuehn}48_{, A. Kugel}57c_{, A. Kuhl}136_{, T. Kuhl}42_{, V. Kukhtin}64_,

Y. Kulchitsky91_{, S. Kuleshov}32b_{, M. Kuna}131a,131b_{, T. Kunigo}67_{, A. Kupco}126_{, H. Kurashige}66_{, Y.A. Kurochkin}91_,

R. Kurumida66_{, V. Kus}126_{, E.S. Kuwertz}146_{, M. Kuze}156_{, J. Kvita}114_{, A. La Rosa}49_{, L. La Rotonda}37a,37b_,

C. Lacasta166_{, F. Lacava}131a,131b_{, J. Lacey}29_{, H. Lacker}16_{, D. Lacour}79_{, V.R. Lacuesta}166_{, E. Ladygin}64_{, R. Lafaye}5_,

B. Laforge79_{, T. Lagouri}175_{, S. Lai}48_{, H. Laier}57a_{, L. Lambourne}77_{, S. Lammers}60_{, C.L. Lampen}7_{, W. Lampl}7_,

E. Lan¸con135_{, U. Landgraf}48_{, M.P.J. Landon}75_{, V.S. Lang}57a_{, A.J. Lankford}162_{, F. Lanni}25_{, K. Lantzsch}30_,

S. Laplace79_{, C. Lapoire}21_{, J.F. Laporte}135_{, T. Lari}90a_{, F. Lasagni Manghi}20a,20b_{, M. Lassnig}30_{, P. Laurelli}47_,

W. Lavrijsen15_{, A.T. Law}136_{, P. Laycock}73_{, O. Le Dortz}79_{, E. Le Guirriec}84_{, E. Le Menedeu}12_{, T. LeCompte}6_,

F. Ledroit-Guillon55_{, C.A. Lee}144b_{, H. Lee}106_{, J.S.H. Lee}117_{, S.C. Lee}150_{, L. Lee}1_{, G. Lefebvre}79_{, M. Lefebvre}168_,

F. Legger99_{, C. Leggett}15_{, A. Lehan}73_{, G. Lehmann Miotto}30_{, X. Lei}7_{, W.A. Leight}29_{, A. Leisos}153_{, A.G. Leister}175_,

M.A.L. Leite24d_{, R. Leitner}128_{, D. Lellouch}171_{, B. Lemmer}54_{, K.J.C. Leney}77_{, T. Lenz}21_{, B. Lenzi}30_{, R. Leone}7_,

S. Leone123a,123b_{, C. Leonidopoulos}46_{, S. Leontsinis}10_{, C. Leroy}94_{, C.G. Lester}28_{, C.M. Lester}121_{, M. Levchenko}122_,

J. Levˆeque5_{, D. Levin}88_{, L.J. Levinson}171_{, M. Levy}18_{, A. Lewis}119_{, G.H. Lewis}109_{, A.M. Leyko}21_{, M. Leyton}41_,

B. Li33b,t_{, B. Li}84_{, H. Li}147_{, H.L. Li}31_{, L. Li}45_{, L. Li}33e_{, S. Li}45_{, Y. Li}33c,u_{, Z. Liang}136_{, H. Liao}34_{, B. Liberti}132a_,

K. Lie164_{, J. Liebal}21_{, W. Liebig}14_{, C. Limbach}21_{, A. Limosani}149_{, S.C. Lin}150,v_{, T.H. Lin}82_{, B.E. Lindquist}147_,

J.T. Linnemann89_{, E. Lipeles}121_{, A. Lipniacka}14_{, M. Lisovyi}42_{, T.M. Liss}164_{, A. Lister}167_{, A.M. Litke}136_{, B. Liu}150_,

D. Liu150_{, J.B. Liu}33b_{, K. Liu}33b,w_{, L. Liu}88_{, M. Liu}45_{, M. Liu}33b_{, Y. Liu}33b_{, M. Livan}120a,120b_{, A. Lleres}55_,

J. Llorente Merino81_{, S.L. Lloyd}75_{, F. Lo Sterzo}150_{, E. Lobodzinska}42_{, P. Loch}7_{, W.S. Lockman}136_,

T. Loddenkoetter21_{, F.K. Loebinger}83_{, A.E. Loevschall-Jensen}36_{, A. Loginov}175_{, T. Lohse}16_{, K. Lohwasser}42_,

M. Lokajicek126, V.P. Lombardo5, B.A. Long22, J.D. Long88, R.E. Long71, L. Lopes125a, D. Lopez Mateos56, B. Lopez Paredes138_{, I. Lopez Paz}12_{, J. Lorenz}99_{, N. Lorenzo Martinez}60_{, M. Losada}161_{, P. Loscutoff}15_{, X. Lou}41_,

A. Lounis116_{, J. Love}6_{, P.A. Love}71_{, F. Lu}33a_{, N. Lu}88_{, H.J. Lubatti}137_{, C. Luci}131a,131b_{, A. Lucotte}55_,

F. Luehring60_{, W. Lukas}61_{, L. Luminari}131a_{, O. Lundberg}145a,145b_{, B. Lund-Jensen}146_{, M. Lungwitz}82_{, D. Lynn}25_,

R. Lysak126_{, E. Lytken}80_{, H. Ma}25_{, L.L. Ma}33d_{, G. Maccarrone}47_{, A. Macchiolo}100_{, J. Machado Miguens}125a,125b_,

D. Macina30_{, D. Madaffari}84_{, R. Madar}48_{, H.J. Maddocks}71_{, W.F. Mader}44_{, A. Madsen}165_{, M. Maeno}8_{, T. Maeno}25_,

A. Maevskiy98_{, E. Magradze}54_{, K. Mahboubi}48_{, J. Mahlstedt}106_{, S. Mahmoud}73_{, C. Maiani}135_{, C. Maidantchik}24a_,

A.A. Maier100_{, A. Maio}125a,125b,125d_{, S. Majewski}115_{, Y. Makida}65_{, N. Makovec}116_{, P. Mal}135,x_{, B. Malaescu}79_,

S. Malyukov30_{, J. Mamuzic}13b_{, B. Mandelli}30_{, I. Mandi´c}74_{, R. Mandrysch}62_{, J. Maneira}125a,125b_{, A. Manfredini}100_,

L. Manhaes de Andrade Filho24b_{, J.A. Manjarres Ramos}158b_{, A. Mann}99_{, P.M. Manning}136_,

A. Manousakis-Katsikakis9, B. Mansoulie135, R. Mantifel86, L. Mapelli30, L. March144c, J.F. Marchand29, G. Marchiori79, M. Marcisovsky126, C.P. Marino168, M. Marjanovic13a, F. Marroquim24a, S.P. Marsden83, Z. Marshall15, L.F. Marti17, S. Marti-Garcia166, B. Martin30, B. Martin89, T.A. Martin169, V.J. Martin46, B. Martin dit Latour14_{, H. Martinez}135_{, M. Martinez}12,o_{, S. Martin-Haugh}130_{, A.C. Martyniuk}77_{, M. Marx}137_,

A. Marzin30_{, L. Masetti}82_{, T. Mashimo}154_{, R. Mashinistov}95_{, J. Masik}83_{, A.L. Maslennikov}108,c_{, I. Massa}20a,20b_,

L. Massa20a,20b_{, N. Massol}5_{, P. Mastrandrea}147_{, A. Mastroberardino}37a,37b_{, T. Masubuchi}154_{, P. M¨attig}174_,

J. Mattmann82_{, J. Maurer}26a_{, S.J. Maxfield}73_{, D.A. Maximov}108,c_{, R. Mazini}150_{, L. Mazzaferro}132a,132b_,

G. Mc Goldrick157_{, S.P. Mc Kee}88_{, A. McCarn}88_{, R.L. McCarthy}147_{, T.G. McCarthy}29_{, J.A. Mcfayden}77_,

G. Mchedlidze54_{, S.J. McMahon}130_{, R.A. McPherson}168,j_{, J. Mechnich}106_{, M. Medinnis}42_{, S. Meehan}31_,

S. Mehlhase99_{, A. Mehta}73_{, K. Meier}57a_{, C. Meineck}99_{, B. Meirose}80_{, C. Melachrinos}31_{, B.R. Mellado Garcia}144c_,

F. Meloni17_{, A. Mengarelli}20a,20b_{, S. Menke}100_{, E. Meoni}160_{, K.M. Mercurio}56_{, S. Mergelmeyer}21_{, N. Meric}135_,

P. Mermod49_{, L. Merola}103a,103b_{, C. Meroni}90a_{, F.S. Merritt}31_{, H. Merritt}110_{, A. Messina}30,y_{, J. Metcalfe}25_,

A.S. Mete162_{, C. Meyer}82_{, C. Meyer}121_{, J-P. Meyer}135_{, J. Meyer}30_{, R.P. Middleton}130_{, S. Migas}73_{, L. Mijovi´c}21_,

G. Mikenberg171_{, M. Mikestikova}126_{, M. Mikuˇz}74_{, A. Milic}30_{, D.W. Miller}31_{, C. Mills}46_{, A. Milov}171_,

D.A. Milstead145a,145b_{, A.A. Minaenko}129_{, Y. Minami}154_{, I.A. Minashvili}64_{, A.I. Mincer}109_{, B. Mindur}38a_,

M. Mineev64_{, Y. Ming}172_{, L.M. Mir}12_{, T. Mitani}170_{, J. Mitrevski}99_{, V.A. Mitsou}166_{, A. Miucci}49_{, P.S. Miyagawa}138_,

J.U. Mj¨ornmark80_{, T. Moa}145a,145b_{, K. Mochizuki}84_{, S. Mohapatra}35_{, S. Molander}145a,145b_{, R. Moles-Valls}166_,

K. M¨onig42_{, C. Monini}55_{, J. Monk}36_{, E. Monnier}84_{, J. Montejo Berlingen}12_{, F. Monticelli}70_{, S. Monzani}131a,131b_,

R.W. Moore3_{, N. Morange}62_{, D. Moreno}82_{, M. Moreno Ll´acer}54_{, P. Morettini}50a_{, M. Morgenstern}44_{, M. Morii}56_,

V. Morisbak118_{, S. Moritz}82_{, A.K. Morley}146_{, G. Mornacchi}30_{, J.D. Morris}75_{, A. Morton}42_{, L. Morvaj}102_,

H.G. Moser100_{, M. Mosidze}51b_{, J. Moss}110_{, K. Motohashi}156_{, R. Mount}142_{, E. Mountricha}25_{, E.J.W. Moyse}85_,

S. Muanza84_{, R.D. Mudd}18_{, F. Mueller}57a_{, J. Mueller}124_{, K. Mueller}21_{, T. Mueller}28_{, T. Mueller}82_,

D. Muenstermann49_{, Y. Munwes}152_{, J.A. Murillo Quijada}18_{, W.J. Murray}169,130_{, H. Musheghyan}54_{, E. Musto}151_,

A.G. Myagkov129,z_{, M. Myska}127_{, O. Nackenhorst}54_{, J. Nadal}54_{, K. Nagai}119_{, R. Nagai}156_{, Y. Nagai}84_{, K. Nagano}65_,

A. Nagarkar110_{, Y. Nagasaka}58_{, K. Nagata}159_{, M. Nagel}100_{, A.M. Nairz}30_{, Y. Nakahama}30_{, K. Nakamura}65_,

T. Nakamura154_{, I. Nakano}111_{, H. Namasivayam}41_{, G. Nanava}21_{, R.F. Naranjo Garcia}42_{, R. Narayan}57b_,

T. Nattermann21_{, T. Naumann}42_{, G. Navarro}161_{, R. Nayyar}7_{, H.A. Neal}88_{, P.Yu. Nechaeva}95_{, T.J. Neep}83_,

P.D. Nef142_{, A. Negri}120a,120b_{, G. Negri}30_{, M. Negrini}20a_{, S. Nektarijevic}49_{, C. Nellist}116_{, A. Nelson}162_,

T.K. Nelson142_{, S. Nemecek}126_{, P. Nemethy}109_{, A.A. Nepomuceno}24a_{, M. Nessi}30,aa_{, M.S. Neubauer}164_,

M. Neumann174_{, R.M. Neves}109_{, P.R. Newman}18_{, D.H. Nguyen}6_{, R.B. Nickerson}119_{, R. Nicolaidou}135_{, J. Nielsen}136_,

N. Nikiforou35_{, A. Nikiforov}16_{, V. Nikolaenko}129,z_{, I. Nikolic-Audit}79_{, K. Nikolics}49_{, K. Nikolopoulos}18_{, P. Nilsson}8_,

Y. Ninomiya154_{, A. Nisati}131a_{, R. Nisius}100_{, T. Nobe}156_{, L. Nodulman}6_{, M. Nomachi}117_{, I. Nomidis}29_{, S. Norberg}112_,

M. Nordberg30_{, O. Novgorodova}44_{, S. Nowak}100_{, M. Nozaki}65_{, L. Nozka}114_{, K. Ntekas}10_{, G. Nunes Hanninger}87_,

T. Nunnemann99_{, E. Nurse}77_{, F. Nuti}87_{, B.J. O’Brien}46_{, F. O’grady}7_{, D.C. O’Neil}141_{, V. O’Shea}53_,

F.G. Oakham29,e_{, H. Oberlack}100_{, T. Obermann}21_{, J. Ocariz}79_{, A. Ochi}66_{, M.I. Ochoa}77_{, S. Oda}69_{, S. Odaka}65_,

A. Oh83_{, S.H. Oh}45_{, C.C. Ohm}15_{, H. Ohman}165_{, H. Oide}30_{, W. Okamura}117_{, H. Okawa}159_{, Y. Okumura}31_,

T. Okuyama154_{, A. Olariu}26a_{, S.A. Olivares Pino}46_{, D. Oliveira Damazio}25_{, E. Oliver Garcia}166_{, A. Olszewski}39_,

J. Olszowska39_{, A. Onofre}125a,125e_{, P.U.E. Onyisi}31,ab_{, M.J. Oreglia}31_{, Y. Oren}152_{, D. Orestano}133a,133b_,

N. Orlando72a,72b_{, C. Oropeza Barrera}53_{, R.S. Orr}157_{, B. Osculati}50a,50b_{, R. Ospanov}121_{, G. Otero y Garzon}27_,

H. Otono69_{, M. Ouchrif}134d_{, E.A. Ouellette}168_{, F. Ould-Saada}118_{, A. Ouraou}135_{, K.P. Oussoren}106_{, Q. Ouyang}33a_,

A. Ovcharova15_{, M. Owen}83_{, V.E. Ozcan}19a_{, N. Ozturk}8_{, K. Pachal}119_{, A. Pacheco Pages}12_{, C. Padilla Aranda}12_,

M. Pag´aˇcov´a48_{, S. Pagan Griso}15_{, E. Paganis}138_{, C. Pahl}100_{, F. Paige}25_{, P. Pais}85_{, K. Pajchel}118_{, G. Palacino}158b_,

S. Palestini30_{, M. Palka}38b_{, D. Pallin}34_{, A. Palma}125a,125b_{, J.D. Palmer}18_{, Y.B. Pan}172_{, E. Panagiotopoulou}10_,

J.G. Panduro Vazquez76_{, P. Pani}106_{, S. Panitkin}25_{, D. Pantea}26a_{, L. Paolozzi}132a,132b_{, Th.D. Papadopoulou}10_,

K. Papageorgiou153,m_{, A. Paramonov}6_{, D. Paredes Hernandez}34_{, M.A. Parker}28_{, F. Parodi}50a,50b_{, J.A. Parsons}35_,

U. Parzefall48, E. Pasqualucci131a, S. Passaggio50a, Fr. Pastore76, G. P´asztor29, S. Pataraia174, N.D. Patel149, J.R. Pater83_{, S. Patricelli}103a,103b_{, T. Pauly}30_{, J. Pearce}168_{, L.E. Pedersen}36_{, M. Pedersen}118_{, S. Pedraza Lopez}166_,

R. Pedro125a,125b_{, S.V. Peleganchuk}108_{, D. Pelikan}165_{, H. Peng}33b_{, B. Penning}31_{, J. Penwell}60_{, D.V. Perepelitsa}25_,

E. Perez Codina158a_{, M.T. P´erez Garc´ıa-Esta˜n}166_{, L. Perini}90a,90b_{, H. Pernegger}30_{, S. Perrella}103a,103b_{, R. Peschke}42_,

V.D. Peshekhonov64_{, K. Peters}30_{, R.F.Y. Peters}83_{, B.A. Petersen}30_{, T.C. Petersen}36_{, E. Petit}42_{, A. Petridis}145a,145b_,

C. Petridou153_{, E. Petrolo}131a_{, F. Petrucci}133a,133b_{, N.E. Pettersson}156_{, R. Pezoa}32b_{, P.W. Phillips}130_,

G. Piacquadio142_{, E. Pianori}169_{, A. Picazio}49_{, E. Piccaro}75_{, M. Piccinini}20a,20b_{, R. Piegaia}27_{, D.T. Pignotti}110_,

J.E. Pilcher31_{, A.D. Pilkington}77_{, M. Pinamonti}163a,163c,ac_{, A. Pinder}119_{, J.L. Pinfold}3_{, A. Pingel}36_{, B. Pinto}125a_,