Evidence for Electroweak Production of $W^{\pm}W^{\pm}jj$ in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector

EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)

CERN-PH-EP-2014-079

Submitted to: Phys. Rev. Lett.

Evidence for Electroweak Production of

W

±

W

±

jj

in

pp

Collisions at

√

s = 8

TeV with the ATLAS Detector

The ATLAS Collaboration

Abstract

This Letter presents the first study of W

W

jj, same-electric-charge diboson production in

as-sociation with two jets, using 20.3 fb

of proton–proton collision data at

√

s = 8

TeV recorded by

the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge

lep-tons (e

e

, e

µ

, and µ

µ

) and two or more jets are analyzed. Production cross sections are

measured in two fiducial regions, with different sensitivities to the electroweak and strong production

mechanisms. First evidence for W

W

jj

production and electroweak-only W

W

jj

production is

observed with a significance of 4.5 and 3.6 standard deviations respectively. The measured production

cross sections are in agreement with Standard Model predictions. Limits at 95% confidence level are

set on anomalous quartic gauge couplings.

c

2014 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.

Evidence for Electroweak Production of W

W

jj in pp Collisions at

√

s = 8 TeV

with the ATLAS Detector

The ATLAS Collaboration

(Dated: October 22, 2014)

This Letter presents the first study of W±W±jj, same-electric-charge diboson production in as-sociation with two jets, using 20.3 fb−1 of proton–proton collision data at√s = 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±µ±, and µ±µ±) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W±W±jj production and electroweak-only W±W±jj production is observed with a significance of 4.5 and 3.6 standard deviations respectively. The measured pro-duction cross sections are in agreement with Standard Model predictions. Limits at 95% confidence level are set on anomalous quartic gauge couplings.

PACS numbers: 14.70.Fm, 12.60.Cn, 13.85.Fb, 13.38.Be

The scattering of two massive vector bosons (VBS), V V → V V with V = W or Z, is a key process to probe the nature of electroweak symmetry breaking [1, 2]. In the absence of a Standard Model (SM) Higgs boson, the longitudinally polarized VBS amplitude increases as a function of the center-of-mass energy √s and violates unitarity at energies around 1 TeV [3–5]. The recent dis-covery of a 125 GeV SM-like Higgs boson at the Large Hadron Collider (LHC) [6, 7] provides a plausible ex-plaination for the mechanism that unitarizes this process. However, many physics scenarios predict enhancements in VBS either from additional resonances or if the ob-served SM-like Higgs boson only partially unitarizes this amplitude [8, 9]. There is no previous evidence for a process involving a V V V V vertex.

At hadron colliders VBS can be idealized as an inter-action of gauge bosons radiated from initial state quarks yielding a final state with two bosons and two jets (V V jj) in a purely electroweak process [10]. VBS diagrams are not separately gauge invariant and must be studied in conjunction with additional Feynman graphs leading to the same V V jj final state [11]. Two classes of physi-cal processes give rise to V V jj final states. The first process, which includes VBS contributions, involves ex-clusively weak interactions at Born level (of order α4

EW

without considering the boson decay, where αEW is the

electroweak force coupling constant) and is referred to as electroweak production. The second process involves both the strong and electroweak interactions at Born level (of order α2

sα2EW, where αs is the strong force

coupling constant) and is referred to as strong produc-tion. In the case of same-electric-charge W W production (W±W±jj), the strong production cross section does not dominate the electroweak cross section, making this channel an ideal choice for initial studies on VBS.

This Letter presents the first evidence for electroweak W±W±jj production, where both W bosons decay lep-tonically (W± → `±<sub>ν, ` = e, µ), using pp collision data</sub>

at √s = 8 TeV collected by the ATLAS detector at the

LHC. This process has a distinct experimental signature of two same-electric-charge leptons and two jets.

Two fiducial regions are defined. The first region or “inclusive region” is defined to study the combination of electroweak and strong production mechanisms, and in this region both processes are referred to as signal. It is defined at particle level as follows. Exactly two prompt charged leptons (τ leptons and leptons originating from τ decays are excluded) are required with the same elec-tric charge, transverse momentum pT > 25 GeV, |η| <

2.5 [12], invariant mass m``> 20 GeV, and angular

sep-aration ∆R`` ≡ p(∆φ)2+ (∆η)2 > 0.3. At least two

jets reconstructed with the anti-ktalgorithm [13] with jet

size R = 0.4 and with pT> 30 GeV, |η| < 4.5, and

sepa-rated from the leptons by ∆R`j > 0.3 are also required.

The invariant mass of the two jets with the largest pT

(mjj) must be larger than 500 GeV, and the magnitude

of the missing transverse momentum (Emiss

T ) calculated

using all neutrinos in the final state must be greater than 40 GeV. To reduce the dependence on QED radia-tion, lepton momenta include contributions from photons within ∆R = 0.1 of the lepton direction. The second re-gion or “VBS rere-gion” is a subset of the inclusive rere-gion that also requires the two jets with largest pTto be

sep-arated in rapidity [14] by |∆yjj| > 2.4. This enhances

the purity of electroweak W±W±jj by removing most of the strong W±W±jj events, which are considered as a background in this region.

The expected production cross sections for the pp → W±_W±_{jj process in the two fiducial regions}

(“fiducial cross sections”) are calculated using Powheg-box [15, 16], with CT10 parton distribution functions (PDFs) [17], interfaced with Pythia8 [18, 19] for par-ton showering, hadronization, and underlying event mod-eling. The contribution from non-resonant production of the same leptonic final state is also considered, but is strongly suppressed [16]. The cross section for the electroweak W±W±jj process is predicted to be 1.00 ± 0.06 fb in the inclusive region and 0.88 ± 0.05 fb in the

VBS region. The cross section for the strong W±W±jj process is 0.35 ± 0.05 fb in the inclusive region and 0.098 ± 0.018 fb for the VBS region. The uncertainty on these predictions include 68% confidence level PDF uncertainties [20], parton shower and hadronization mod-eling uncertainties estimated by comparing Pythia8 and Herwig++/Jimmy [21, 22], the independent variation of renormalization and factorization scales by a fac-tor of two, the difference between the predictions from Powhegbox and VBFNLO [23], and the integration er-ror. The parton shower and generator uncertainties are dominant for electroweak production, while scale varia-tions are dominant for strong production. Interference between electroweak and strong production is studied at leading-order accuracy using Sherpa [24] and is found to increase the combined strong and electroweak W±W±jj cross section by (12 ± 6)% in the inclusive region and (7 ± 4)% in the VBS region. The total SM signal cross-section prediction in the inclusive region is 1.52 ± 0.11 fb, while the sum of electroweak and interference contribu-tions in the VBS region is 0.95 ± 0.06 fb.

The ATLAS detector described in Ref. [25] is a multi-purpose particle physics detector. It consists of an inner tracking detector (ID) surrounded by a calorimeter and a muon spectrometer (MS). Events for this analysis are selected with single-lepton (e or µ) triggers. After ap-plying data quality requirements, the remaining data set has a total integrated luminosity of 20.3 ± 0.6 fb−1 [26]. Electron candidates are reconstructed from a combina-tion of a cluster of energy deposits in the electromagnetic calorimeter and a track in the ID. They are required to have pT > 25 GeV and |η| < 2.47, excluding the

transi-tion region between the barrel and endcap calorimeters (1.37 < |η| < 1.52). Candidate electrons must satisfy the tight quality definition described in Ref. [27] and optimized for 2012 data taking. Muon candidates are re-constructed by combining tracks in the ID and MS [28]. The combined track is required to have pT > 25 GeV

and |η| < 2.4. Leptons are required to originate from the same interaction vertex and, to reduce non-prompt pro-duction, calorimeter and tracker isolation requirements are applied within a cone of size ∆R = 0.3.

Jets are reconstructed from clusters of energy in the calorimeter using the anti-kt algorithm with jet-size

pa-rameter R = 0.4 and calibrated using techniques from Ref. [29]. Only jets with pT> 30 GeV and |η| < 4.5

are considered. Jets containing b-hadrons (“b-jet”) with |η| < 2.5 are identified by combining information on the impact parameter significances of their tracks and ex-plicit secondary vertex reconstruction [30]. The mea-surement of Emiss

T [31] is based on the energy collected

by the electromagnetic and hadronic calorimeters, and muon tracks reconstructed by the ID and MS.

Candidate W±W±jj events are required to have ex-actly two leptons (electrons or muons) with the same electric charge and at least two jets satisfying the above

selection criteria. Three different final states (“chan-nels”) are considered based on the lepton flavor, namely e±_e±_{, e}±_µ±_{, and µ}±_µ±_{. To reduce the contributions}

from W Z/γ∗+jets and ZZ+jets production, events are removed if they contain additional leptons reconstructed with looser isolation requirements, pT> 7 GeV (6 GeV)

for electrons (muons) and loose quality definition for elec-trons [27]. The two leptons must have m``> 20 GeV.

The dielectron invariant mass must not be within 10 GeV of the Z boson mass to reduce Z+jets background from electron charge misidentification. Events are also re-quired to have Emiss

T > 40 GeV, and in order to reject

backgrounds from non-prompt leptons, mainly t¯t → `νjjb¯b, events must not contain a b-jet. To further reduce t¯t and W Z/γ∗+jets backgrounds, events in the inclusive region are required to have mjj > 500 GeV. In addition,

in the VBS region |∆yjj| > 2.4 is required.

Monte Carlo (MC) simulation is used to estimate the expected signal events. The W±W±jj processes are gen-erated with Sherpa, using up to three jets in the matrix-element and parton shower model [24], and normalized using the expected cross section in each fiducial region (see above). Generated events are processed with the full detector simulation [32] based on GEANT4 [33], and the standard ATLAS reconstruction software.

Several SM processes enter the W±W±jj signal re-gions as irreducible physics processes or through instru-mental effects. About 90% of the expected “prompt lep-ton background” originates from W Z/γ∗→ `±<sub>`</sub>∓_`±_ν

pro-duction that passes signal region selections when one lep-ton is outside of the experimental acceptance or does not satisfy the lepton identification criteria. Up to 20% of the expected W Z/γ∗ _{contribution comes from electroweak}

production. Smaller contributions from ZZ+jets and t¯t + W/Z are also considered. These “prompt lepton backgrounds” are estimated using MC simulation. In the VBS region strong W±W±jj is estimated using simula-tion and normalized to the SM predicsimula-tion for the fiducial cross section described above. Correction factors for lep-ton and jet efficiencies, additional pp interactions (pile-up), and beam-spot location are applied to the simula-tion to account for differences with data. Furthermore, the simulation is tuned to reproduce the calorimeter re-sponse and the muon momentum scale and resolution observed in data. Systematic uncertainties on the signal yield and backgrounds estimated from MC simulation are derived from uncertainties on the correction factors, en-ergy smearing parameters, the Emiss

T modeling, and the

b-tagging efficiency/mistag rate [30].

Sherpa is used to produce W Z/γ∗+jets events, tak-ing into account both the strong and electroweak produc-tion mechanisms. This sample is normalized to the next-to-leading-order calculation in QCD from VBFNLO in each fiducial region [34, 35], with an accuracy of 14% in the inclusive region and 11% in the VBS region. The Sherpa extrapolation from the inclusive region to the

VBS region differs from the VBFNLO calculation by 3%. The main sources of uncertainties on the VBFNLO normalization are from the PDF, from factorization and renormalization scale dependence, and from the parton shower model. The small tZj component in this sample is estimated using the Sherpa prediction.

The production of ZZ+jets is modeled with Sherpa, while for t¯_{t + W/Z processes Madgraph [36]+Pythia8} is used. The theoretical uncertainties on the production cross sections of these processes are ±19% and ±30% respectively, dominated by the jet multiplicity modeling and the scale uncertainties.

Contributions from W γ production, including elec-troweak production of W γjj, where the photon converts to an electron–positron pair inside the detector is in-cluded in “conversion background”. It is estimated us-ing Alpgen[37]+Herwig/Jimmy and Sherpa (for elec-troweak W γjj) MC samples with a total theory uncer-tainty of ±17%.

The remaining conversion background originates from processes that produce oppositely charged prompt lep-tons where one lepton’s charge is misidentified, primarily because one electron has undergone hard bremsstrahlung and subsequent photon conversion. This background is estimated from data. The dominant origins of this back-ground are tt → `ν`νbb and Drell–Yan production. The electron charge misidentification rate is measured using Z/γ∗ → ee events. The muon charge misidentification rate is found to be negligible. The background is es-timated by applying the electron charge misidentifica-tion rate to data selected using all signal selecmisidentifica-tion crite-ria except for the electric charges of the leptons, which are instead required to be opposite sign. The dominant systematic uncertainties arise from possible method bias (studied in simulation) and the statistical uncertainty in the charge misidentification rate. The total uncertainty is between 15% and 32% depending on signal region and channel.

Contributions from SM processes that produce at least one non-prompt lepton from hadron decays in jets (W +jets, t¯t, single top or multijet production, denoted by “other non-prompt background”) are estimated from data events that contain one lepton passing all selec-tions and one non-isolated or loose-quality lepton. These events, which are dominated by the non-prompt back-ground, are scaled by a “fake rate” to predict the non-prompt background. The fake rate is the efficiency for non-prompt leptons to pass the nominal lepton selections with respect to the looser isolation and quality require-ments. The fake rate for non-prompt leptons is measured in a dijet sample. The uncertainty on the non-prompt background estimate is between 39% and 52% depend-ing on region and channel, dominated by prompt-lepton contamination in the dijet sample and the uncertainty on the extrapolation of fake rates into the signal region.

Contributions from double parton scattering [38] arise

TABLE I: Expected numbers of events (exp.) and measured data counts are shown by channel for each control region de-scribed in the text. The uncertainty shown is the systematic uncertainty on the expected yield.

Control Region Trilepton ≤ 1 jet b-tagged Low mjj

e±e± exp. 36 ± 6 278 ± 28 40 ± 6 76 ± 9 data 40 288 46 78 e±µ± exp. 110 ± 18 288 ± 42 75 ± 13 127 ± 16 data 104 328 82 120 µ±µ± exp. 60 ± 10 88 ± 14 25 ± 7 40 ± 6 data 48 101 36 30

mainly in W Z/γ∗ and dijet production. However, simu-lation shows they are negligible after the requirement of mjj > 500 GeV.

Background predictions are tested in several same-electric-charge dilepton control regions summarized in Table I. The MC modeling of prompt backgrounds is tested in a trilepton control region defined by inverting the third-lepton veto and removing the |∆yjj| and mjj

se-lections. Conversion and prompt backgrounds are tested in a region with at most one jet (“≤ 1 jet” in Table I). In this sample the e±e± channel is dominated by Z → ee events, the µ±µ± channel is dominated by prompt pro-cesses, and the e±µ± channel has a mixture of prompt, non-prompt, and conversion backgrounds. Backgrounds from non-prompt leptons originating from tt → `νjjbb are tested in a control region that requires at least one of the jets to be identified as a b-jet. Finally, the com-bined background model is tested by inverting the mjj

selection.

The observed number of events is compared in Table II to the expected background and signal yield with system-atic uncertainties for the three channels in both the in-clusive and VBS signal regions. In the VBS region strong W±W±jj is considered as background using the SM pre-diction and its experimental and theoretical uncertain-ties. The systematic uncertainty on the background pre-diction is about 20%, dominated by the jet reconstruc-tion uncertainties (11–15%) and theory uncertainties (4– 11%). An excess of events over the background expec-tation is observed in both signal regions and in all three channels; the combined significance over the background-only hypothesis is 4.5 standard deviations in the inclusive region and 3.6 standard deviations in the VBS region. The expected significance for a SM W±W±jj signal is 3.4 standard deviations in the inclusive region and 2.8 in the VBS region.

Figure 1 shows the expected and observed mjj

dis-tribution after all inclusive region selection criteria are applied, except mjj > 500 GeV. Figure 2 shows the

|∆yjj| distribution after the inclusive region selections.

All three dilepton channels are summed in both figures. The observed excess is consistent with the expected event topology for W±W±jj production.

Inclusive Region VBS Region e±e± e±µ± µ±µ± e±e± e±µ± µ±µ± Prompt 3.0 ± 0.7 6.1 ± 1.3 2.6 ± 0.6 2.2 ± 0.5 4.2 ± 1.0 1.9 ± 0.5 Conversions 3.2 ± 0.7 2.4 ± 0.8 – 2.1 ± 0.5 1.9 ± 0.7 – Other non-prompt 0.61 ± 0.30 1.9 ± 0.8 0.41 ± 0.22 0.50 ± 0.26 1.5 ± 0.6 0.34 ± 0.19 W±W±jj Strong 0.89 ± 0.15 2.5 ± 0.4 1.42 ± 0.23 0.25 ± 0.06 0.71 ± 0.14 0.38 ± 0.08 W±W±jj Electroweak 3.07 ± 0.30 9.0 ± 0.8 4.9 ± 0.5 2.55 ± 0.25 7.3 ± 0.6 4.0 ± 0.4 Total background 6.8 ± 1.2 10.3 ± 2.0 3.0 ± 0.6 5.0 ± 0.9 8.3 ± 1.6 2.6 ± 0.5 Total predicted 10.7 ± 1.4 21.7 ± 2.6 9.3 ± 1.0 7.6 ± 1.0 15.6 ± 2.0 6.6 ± 0.8 Data 12 26 12 6 18 10

TABLE II: Estimated background yields, observed number of data events, and predicted signal yields for the three channels are shown with their systematic uncertainty. Contributions due to interference are included in the W±W±jj electroweak prediction. [GeV] jj m Events/50 GeV -1 10 1 10 2

10 Data 2012 Syst. Uncertainty jj Electroweak ± W ± W jj Strong ± W ± W Prompt Conversions Other non-prompt ATLAS = 8 TeV s , -1 20.3 fb [GeV] jj m 200 400 600 800 1000 1200 1400 1600 1800 2000 Data/Background 0 5 Data/Bkg Bkg Uncertainty (Sig+Bkg)/Bkg

FIG. 1: The mjj distribution for events passing the

inclu-sive region selections except for the mjj selection indicated

by the dashed line. The black hatched band in the upper plot represents the systematic uncertainty on the total prediction. On the lower plot the shaded band represents the fractional uncertainty of the total background while the solid line and hatched band represents the ratio of the total prediction to background only and its uncertainty. The W±W±jj predic-tion is normalized to the SM expectapredic-tion.

production, and the fiducial cross sections in the two re-gions (σfid_{) are measured by combining the three decay}

channels in a likelihood function. Systematic uncertain-ties are taken into account with nuisance parameters.

The signal efficiency in each fiducial region is defined as the number of expected signal events after selections divided by the number of events passing the respective fiducial region selections at particle level. The efficiency accounts for the detector reconstruction, migration into and out of the fiducial volume, identification, and trigger efficiency; it is 56%, 72%, 77% for the inclusive region and 57%, 73%, 83% for the VBS region in the e±e±, e±µ±,

| jj y ∆ | 0 1 2 3 4 5 6 7 8 9 Events 5 10 15 20 25 30 Data 2012 Syst. Uncertainty jj Electroweak ± W ± W jj Strong ± W ± W Prompt Conversions Other non-prompt ATLAS = 8 TeV s , -1 20.3 fb > 500 GeV jj m

FIG. 2: The |∆yjj| distribution for events passing all

inclu-sive region selections. The |∆yjj| selection is indicated by a

dashed line. The W±W±jj prediction is normalized to the SM expectation.

µ±µ±channels respectively. The efficiency also accounts for the contribution of leptonic τ decays, which are not included in the fiducial cross-section definition: 10% of signal candidates are expected to originate from leptonic τ decays. The uncertainty on the signal efficiency is dom-inated by the jet reconstruction uncertainty of 6%.

The measured fiducial cross section for strong and elec-troweak W±W±jj production in the inclusive region is σfid= 2.1 ± 0.5(stat) ± 0.3(syst) fb. The measured fidu-cial cross section for electroweak W±W±jj production, including interference with strong production in the VBS region, is σfid _{= 1.3 ± 0.4(stat) ± 0.2(syst) fb. The}

mea-sured cross sections are in agreement with the respective SM expectations of 1.52 ± 0.11 fb and 0.95 ± 0.06 fb.

Additional contributions to W±W±jj production can be expressed in a model-independent way using higher-dimensional operators leading to anomalous quartic gauge boson couplings (aQGCs). The measured cross section in the VBS fiducial region is used to set lim-its on aQGCs affecting vertices with four interacting W bosons. The Whizard event-generator [39] is used

4 α -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 5 α -0.6 -0.4 -0.2 0 0.2 0.4 0.6 ATLAS_{20.3 fb}-1_{, s = 8 TeV} pp → W± _W± _jj K-matrix unitarization 68% CL 95% CL expected 95% CL Standard Model confidence intervals

FIG. 3: Limits on (α4,α5). Points outside of the solid light

ellipse are excluded by the data at 95% confidence level (CL). Points outside the inner dark ellipse are excluded at the 68% confidence level. The expected exclusion is given by the solid line.

to generate W±W±jj events with aQGCs using a K-matrix unitarization method [40]. Following existing no-tations [40, 41], deviations from the SM (which includes a SM Higgs with mH=126 GeV) are parameterized in

terms of two parameters (α4, α5). The reconstruction

efficiency is derived using simulated Whizard samples combined with Pythia8. The difference with respect to Sherpa for the SM case is taken as additional system-atic uncertainty. The reconstruction efficiency increases with increasing α4,5 values, but the effect is small

com-pared to the increase in the fiducial cross sections in the same parameter space. The expected and observed 95% confidence intervals derived from the profile likelihood function are shown in Fig. 3. The one-dimensional pro-jection at α5,4 = 0 is respectively −0.14 < α4 < 0.16

and −0.23 < α5 < 0.24 compared to an expected

−0.10 < α4< 0.12 and −0.18 < α5< 0.20.

In conclusion, a significant excess of events over back-ground predictions is found using 20.3 fb−1of pp collision data at√s = 8 TeV recorded by the ATLAS detector at the LHC. This excess is consistent with SM W±_W±_jj

production. Two fiducial cross sections are measured in regions with different sensitivities to the electroweak and strong W±W±jj processes. The measured cross sections are in good agreement with SM predictions. In addition, the first limits on the α4,5 aQGC parameters are set.

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, Ar-gentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Be-larus; 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 and ERC, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Rus-sia and ROSATOM, RusRus-sian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Can-tons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Lever-hulme 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.

[1] J. Bagger, V. Barger, K. Cheung, J. Gunion, T. Han, G. A. Ladinsky, R. Rosenfeld, and C. -P. Yuan, Phys. Rev. D 49, 1246 (1994).

[2] J. Bagger, V. Barger, K. Cheung, J. Gunion, T. Han, G. A. Ladinsky, R. Rosenfeld, and C. -P. Yuan, Phys. Rev. D 52, 3878 (1995).

[3] M. J. G. Veltman, Acta Phys. Polon. B 8, 475 (1977). [4] B. W. Lee, C. Quigg, and H. B. Thacker, Phys. Rev.

Lett. 38, 883 (1977).

[5] B. W. Lee, C. Quigg, and H. B. Thacker, Phys. Rev. D 16, 1519 (1977).

[6] ATLAS Collaboration, Phys. Lett. B 716, 1 (2012). [7] CMS Collaboration, Phys. Lett. B 716, 30 (2012). [8] D. Espriu and B. Yencho, Phys. Rev. D 87, 055017

(2013).

[9] J. Chang, K. Cheung, C. T. Lu, and Y. Tzu-Chiang, Phys. Rev. D 87, 093005 (2013).

[10] R. N. Cahn, S. D. Ellis, R. Kleiss, and W. J. Stirling, Phys. Rev. D 35, 1626 (1987).

[11] E. Accomando, A. Ballestrero, A. Belhouari, and E. Maina, Phys. Rev. D 74, 073010 (2006).

[12] ATLAS uses a right-handed coordinate system with its origin at the nominal interaction point (IP) in the centre of the detector and the z-axis along the beam pipe. The x-axis points from the IP to the centre of the LHC ring, and the y-axis points upward. Cylindrical coordinates (r, φ) are used in the transverse plane, φ being the azimuthal

angle around the beam pipe. The pseudorapidity is de-fined in terms of the polar angle θ as η = − ln tan(θ/2). Transverse projections are defined relative to the beam axis.

[13] M. Cacciari, G. P. Salam, and G. Soyez, J. High Energy Phys. 04 (2008) 063.

[14] Rapidity is defined as y = (1/2) ln[(E + pz)/(E − pz)]

[15] P. Nason, J. High Energy Phys. 0411 (2004) 040; S. Frix-ione, P. Nason, and C. Oleari, J. High Energy Phys. 11 (2007) 070; S. Alioli, P. Nason, C. Oleari, and E. Re, J. High Energy Phys. 06 (2010) 043.

[16] B. Jager, C. Oleari, and D. Zeppenfeld, Phys. Rev. D 80, 034022 (2009); B. Jager, G. Zanderighi, J. High Energy Phys. 11 (2011) 055; T. Melia, K. Melnikov, R. Rontsch, and G. Zanderighi, J. High Energy Phys. 12 (2010) 053; T. Melia, P. Nason, R. Rontsch, and G. Zanderighi, Eur. Phys. J. C 71, 1670 (2011).

[17] H.-L. Lai, M. Guzzi, J. Huston, Z. Li, P. M. Nadolsky, and C.-P. Yuan, Phys. Rev. D 82, 074024 (2010). [18] T. Sj¨ostrand, S. Mrenna, and P. Skands, J. High

En-ergy Phys. 05 (2006) 026; T. Sj¨ostrand, S. Mrenna, and P. Skands, Comput. Phys. Comm. 178, 852 (2008). [19] ATLAS Collaboration, ATL-PHYS-PUB-2012-003

(2012), available at https://cds.cern.ch/record/1474107. [20] J. M. Campbell, J. W. Huston, and W. J. Stirling, Rep.

Prog. Phys. 70, 89 (2007).

[21] G. Corcella, I. G. Knowles, G. Marchesini, S. Moretti, K. Odagiri, P. Richardson, M. H. Seymour, and B. R. Webber, J. High Energy Phys. 01 (2001) 010. [22] J.M. Butterworth, J.R. Forshaw, and M.H. Seymour,

Z. Phys. C 72, 637 (1996).

[23] K. Arnold, M. Bahr, G. Bozzi, F. Campanario, C. En-glert, T. Figy, N. Greiner, C. Hackstein, V. Hankele, B. Jager, et al., Comput. Phys. Commun. 180, 1661 (2009); J. Baglio, J. Bellm, G. Bozzi, M. Brieg, F. Cam-panario, C. Englert, B. Feigl, J. Frank, T. Figy, F. Geyer, et al., arXiv:1107.4038 [hep-ph]; K. Arnold, J. Bellm, G. Bozzi, F. Campanario, C. Englert, B. Feigl, J. Frank, T. Figy, B. Jager, M. Kerner, et al., arXiv:1207.4975 [hep-ph]; B. Jager, C. Oleari, and D. Zeppenfeld, Phys. Rev. D 80, 034022 (2009).

[24] T. Gleisberg, S. Hoeche, F. Krauss, M. Schoenherr, S. Schumann, F. Siegert, and J. Winter, J. High En-ergy Phys. 02 (2009) 007; T. Gleisberg and S. Hoeche, J. High Energy Phys. 12 (2008) 039; S. Schumann and F. Krauss, J. High Energy Phys. 03 (2008) 038; S. Hoeche, F. Krauss, S. Schumann, and F. Siegert, J. High Energy Phys. 05 (2009) 053.

[25] ATLAS Collaboration, JINST 3, S08003 (2008). [26] ATLAS Collaboration, Eur. Phys. J. C 73, 2518 (2013). [27] ATLAS Collaboration, arXiv:1404.2240 [hep-ex]; ATLAS

Collaboration, Eur. Phys. J. C 72, 1909 (2012). [28] ATLAS Collaboration, Phys. Lett. B 707, 438 (2012). [29] ATLAS Collaboration, Eur. Phys. J. C 73, 2304 (2013). [30] ATLAS Collaboration, ATLAS-CONF-2011-102,

avail-able at http://cdsweb.cern.ch/record/1369219.

[31] ATLAS Collaboration, Eur. Phys. J. C 72, 1844 (2012). [32] ATLAS Collaboration, Eur. Phys. J. C 70, 823 (2010). [33] S. Agostinelli, J. Allison, K. Amako, J. Apostolakis,

H. Araujo, P. Arce, M. Asai, D. Axen, S. Banerjee, G. Barrand, et al., Nucl. Instrum. Methods Phys. Res. Sect. A 506, 250 (2003).

[34] G. Bozzi, B. Jager, C. Oleari, and D. Zeppenfeld, Phys. Rev. D 75, 073004 (2007).

[35] F. Campanario, M. Kerner, L. D. Ninh, and D. Zeppen-feld, Phys. Rev. Lett. 111, 052003 (2013).

[36] J. Alwall, P. Demin, S. Visscher, R. Frederix, M. Herquet, F. Maltoni, T. Plehn, D.L. Rainwater, and T. Stelzer, J. High Energy Phys. 09 (2007) 028.

[37] M. L. Mangano, M. Moretti, F. Piccinini, R. Pittau, and A. Polosa, J. High Energy Phys. 07 (2003) 001.

[38] A. Del Fabro and D. Treleani, Phys. Rev. D 63, 057901 (2001).

[39] W. Kilian, T. Ohl, and J. Reuter, Eur. Phys. J. C 71, 1742 (2011); M. Moretti, T. Ohl, and J. Reuter, arXiv:hep-ph/0102195.

[40] A. Alboteanu, W. Kilian, and J. Reuter, J. High Energy Phys. 11 (2008) 010.

[41] T. Appelquist and C. Bernard, Phys. Rev. D 22, 200 (1980); A. C. Longhitano, Phys. Rev. D 22, 1166 (1980); Nucl. Phys. B188, 118 (1981).

The ATLAS Collaboration

G. Aad84_{, B. Abbott}112_{, J. Abdallah}152_{, S. Abdel Khalek}116_{, O. Abdinov}11_{, R. Aben}106_{, B. Abi}113_{, M. Abolins}89_,

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}177_{, S. Adomeit}99_{, T. Adye}130_{, T. Agatonovic-Jovin}13a_,

J.A. Aguilar-Saavedra125a,125f_{, M. Agustoni}17_{, S.P. Ahlen}22_{, F. Ahmadov}64,b_{, G. Aielli}134a,134b_,

H. Akerstedt147a,147b_{, T.P.A. ˚Akesson}80_{, G. Akimoto}156_{, A.V. Akimov}95_{, G.L. Alberghi}20a,20b_{, J. Albert}170_,

S. Albrand55_{, M.J. Alconada Verzini}70_{, M. Aleksa}30_{, I.N. Aleksandrov}64_{, C. Alexa}26a_{, G. Alexander}154_,

G. Alexandre49_{, T. Alexopoulos}10_{, M. Alhroob}165a,165c_{, G. Alimonti}90a_{, L. Alio}84_{, J. Alison}31_{, B.M.M. Allbrooke}18_,

L.J. Allison71_{, P.P. Allport}73_{, J. Almond}83_{, A. Aloisio}103a,103b_{, A. Alonso}36_{, F. Alonso}70_{, C. Alpigiani}75_,

A. Altheimer35_{, B. Alvarez Gonzalez}89_{, M.G. Alviggi}103a,103b_{, K. Amako}65_{, Y. Amaral Coutinho}24a_{, C. Amelung}23_,

D. Amidei88_{, S.P. Amor Dos Santos}125a,125c_{, A. Amorim}125a,125b_{, 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. Andreazza90a,90b, V. Andrei58a, X.S. Anduaga70, S. Angelidakis9, I. Angelozzi106, P. Anger44, A. Angerami35, F. Anghinolfi30, A.V. Anisenkov108, N. Anjos125a, A. Annovi47, A. Antonaki9, M. Antonelli47, A. Antonov97, J. Antos145b, F. Anulli133a, M. Aoki65, L. Aperio Bella18, R. Apolle119,c, G. Arabidze89, I. Aracena144, Y. Arai65, J.P. Araque125a_{, A.T.H. Arce}45_{, J-F. Arguin}94_{, S. Argyropoulos}42_{, M. Arik}19a_{, A.J. Armbruster}30_{, O. Arnaez}30_,

V. Arnal81_{, H. Arnold}48_{, M. Arratia}28_{, O. Arslan}21_{, A. Artamonov}96_{, G. Artoni}23_{, S. Asai}156_{, N. Asbah}42_,

A. Ashkenazi154_{, B. ˚Asman}147a,147b_{, L. Asquith}6_{, K. Assamagan}25_{, R. Astalos}145a_{, M. Atkinson}166_{, N.B. Atlay}142_,

B. Auerbach6_{, K. Augsten}127_{, M. Aurousseau}146b_{, G. Avolio}30_{, G. Azuelos}94,d_{, Y. Azuma}156_{, M.A. Baak}30_,

C. Bacci135a,135b_{, H. Bachacou}137_{, K. Bachas}155_{, M. Backes}30_{, M. Backhaus}30_{, J. Backus Mayes}144_{, E. Badescu}26a_,

P. Bagiacchi133a,133b_{, P. Bagnaia}133a,133b_{, Y. Bai}33a_{, T. Bain}35_{, J.T. Baines}130_{, O.K. Baker}177_{, S. Baker}77_,

P. Balek128_{, F. Balli}137_{, E. Banas}39_{, Sw. Banerjee}174_{, A.A.E. Bannoura}176_{, V. Bansal}170_{, H.S. Bansil}18_{, L. Barak}173_,

S.P. Baranov95_{, E.L. Barberio}87_{, D. Barberis}50a,50b_{, M. Barbero}84_{, T. Barillari}100_{, M. Barisonzi}176_{, T. Barklow}144_,

N. Barlow28_{, B.M. Barnett}130_{, R.M. Barnett}15_{, Z. Barnovska}5_{, A. Baroncelli}135a_{, G. Barone}49_{, A.J. Barr}119_,

F. Barreiro81_{, J. Barreiro Guimar˜aes da Costa}57_{, R. Bartoldus}144_{, A.E. Barton}71_{, P. Bartos}145a_{, V. Bartsch}150_,

A. Bassalat116_{, A. Basye}166_{, R.L. Bates}53_{, L. Batkova}145a_{, J.R. Batley}28_{, M. Battaglia}138_{, M. Battistin}30_,

F. Bauer137, H.S. Bawa144,e, T. Beau79, P.H. Beauchemin162, R. Beccherle123a,123b, P. Bechtle21, H.P. Beck17, K. Becker176, S. Becker99, M. Beckingham139, C. Becot116, A.J. Beddall19c, A. Beddall19c, S. Bedikian177, V.A. Bednyakov64, C.P. Bee149, L.J. Beemster106, T.A. Beermann176, M. Begel25, K. Behr119,

C. Belanger-Champagne86, P.J. Bell49, W.H. Bell49, G. Bella154, L. Bellagamba20a, A. Bellerive29, M. Bellomo85, K. Belotskiy97_{, O. Beltramello}30_{, O. Benary}154_{, D. Benchekroun}136a_{, K. Bendtz}147a,147b_{, N. Benekos}166_,

Y. Benhammou154_{, E. Benhar Noccioli}49_{, J.A. Benitez Garcia}160b_{, D.P. Benjamin}45_{, J.R. Bensinger}23_,

K. Benslama131_{, S. Bentvelsen}106_{, D. Berge}106_{, E. Bergeaas Kuutmann}16_{, N. Berger}5_{, F. Berghaus}170_,

E. Berglund106_{, J. Beringer}15_{, C. Bernard}22_{, P. Bernat}77_{, C. Bernius}78_{, F.U. Bernlochner}170_{, T. Berry}76_,

P. Berta128_{, C. Bertella}84_{, G. Bertoli}147a,147b_{, F. Bertolucci}123a,123b_{, D. Bertsche}112_{, M.I. Besana}90a_{, G.J. Besjes}105_,

O. Bessidskaia147a,147b_{, M.F. Bessner}42_{, N. Besson}137_{, C. Betancourt}48_{, S. Bethke}100_{, W. Bhimji}46_{, R.M. Bianchi}124_,

L. Bianchini23_{, M. Bianco}30_{, O. Biebel}99_{, S.P. Bieniek}77_{, K. Bierwagen}54_{, J. Biesiada}15_{, M. Biglietti}135a_,

J. Bilbao De Mendizabal49_{, H. Bilokon}47_{, M. Bindi}54_{, S. Binet}116_{, A. Bingul}19c_{, C. Bini}133a,133b_{, C.W. Black}151_,

J.E. Black144_{, K.M. Black}22_{, D. Blackburn}139_{, R.E. Blair}6_{, J.-B. Blanchard}137_{, T. Blazek}145a_{, I. Bloch}42_,

C. Blocker23_{, W. Blum}82,∗_{, U. Blumenschein}54_{, G.J. Bobbink}106_{, V.S. Bobrovnikov}108_{, S.S. Bocchetta}80_{, A. Bocci}45_,

C. Bock99, C.R. Boddy119, M. Boehler48, J. Boek176, T.T. Boek176, J.A. Bogaerts30, A.G. Bogdanchikov108, A. Bogouch91,∗, C. Bohm147a, J. Bohm126, V. Boisvert76, T. Bold38a, V. Boldea26a, A.S. Boldyrev98, M. Bomben79, M. Bona75, M. Boonekamp137, A. Borisov129, G. Borissov71, M. Borri83, S. Borroni42, J. Bortfeldt99,

V. Bortolotto135a,135b, K. Bos106, D. Boscherini20a, M. Bosman12, H. Boterenbrood106, J. Boudreau124, J. Bouffard2, E.V. Bouhova-Thacker71, D. Boumediene34, C. Bourdarios116, N. Bousson113, S. Boutouil136d, A. Boveia31,

J. Boyd30_{, I.R. Boyko}64_{, I. Bozovic-Jelisavcic}13b_{, J. Bracinik}18_{, A. Brandt}8_{, G. Brandt}15_{, O. Brandt}58a_,

U. Bratzler157_{, B. Brau}85_{, J.E. Brau}115_{, H.M. Braun}176,∗_{, S.F. Brazzale}165a,165c_{, B. Brelier}159_{, K. Brendlinger}121_,

A.J. Brennan87_{, R. Brenner}167_{, S. Bressler}173_{, K. Bristow}146c_{, T.M. Bristow}46_{, D. Britton}53_{, F.M. Brochu}28_,

I. Brock21_{, R. Brock}89_{, C. Bromberg}89_{, J. Bronner}100_{, G. Brooijmans}35_{, T. Brooks}76_{, W.K. Brooks}32b_,

J. Brosamer15_{, E. Brost}115_{, G. Brown}83_{, J. Brown}55_{, P.A. Bruckman de Renstrom}39_{, D. Bruncko}145b_,

R. Bruneliere48_{, S. Brunet}60_{, A. Bruni}20a_{, G. Bruni}20a_{, M. Bruschi}20a_{, L. Bryngemark}80_{, T. Buanes}14_{, Q. Buat}143_,

F. Bucci49_{, P. Buchholz}142_{, R.M. Buckingham}119_{, A.G. Buckley}53_{, S.I. Buda}26a_{, I.A. Budagov}64_{, F. Buehrer}48_,

L. Bugge118_{, M.K. Bugge}118_{, O. Bulekov}97_{, A.C. Bundock}73_{, H. Burckhart}30_{, S. Burdin}73_{, B. Burghgrave}107_,

S. Burke130_{, I. Burmeister}43_{, E. Busato}34_{, D. B¨uscher}48_{, V. B¨uscher}82_{, P. Bussey}53_{, C.P. Buszello}167_{, B. Butler}57_,

M. Byszewski10, S. Cabrera Urb´an168, D. Caforio20a,20b, O. Cakir4a, P. Calafiura15, A. Calandri137, G. Calderini79, P. Calfayan99, R. Calkins107, L.P. Caloba24a, D. Calvet34, S. Calvet34, R. Camacho Toro49, S. Camarda42,

D. Cameron118_{, L.M. Caminada}15_{, R. Caminal Armadans}12_{, S. Campana}30_{, M. Campanelli}77_{, A. Campoverde}149_,

V. Canale103a,103b_{, A. Canepa}160a_{, M. Cano Bret}75_{, J. Cantero}81_{, R. Cantrill}76_{, T. Cao}40_,

M.D.M. Capeans Garrido30_{, I. Caprini}26a_{, M. Caprini}26a_{, M. Capua}37a,37b_{, R. Caputo}82_{, R. Cardarelli}134a_,

T. Carli30_{, G. Carlino}103a_{, L. Carminati}90a,90b_{, S. Caron}105_{, E. Carquin}32a_{, G.D. Carrillo-Montoya}146c_{, J.R. Carter}28_,

J. Carvalho125a,125c_{, D. Casadei}77_{, M.P. Casado}12_{, M. Casolino}12_{, E. Castaneda-Miranda}146b_{, A. Castelli}106_,

V. Castillo Gimenez168_{, N.F. Castro}125a_{, P. Catastini}57_{, A. Catinaccio}30_{, J.R. Catmore}118_{, A. Cattai}30_,

G. Cattani134a,134b_{, S. Caughron}89_{, V. Cavaliere}166_{, D. Cavalli}90a_{, M. Cavalli-Sforza}12_{, V. Cavasinni}123a,123b_,

F. Ceradini135a,135b_{, B. Cerio}45_{, K. Cerny}128_{, A.S. Cerqueira}24b_{, A. Cerri}150_{, L. Cerrito}75_{, F. Cerutti}15_{, M. Cerv}30_,

A. Cervelli17_{, S.A. Cetin}19b_{, A. Chafaq}136a_{, D. Chakraborty}107_{, I. Chalupkova}128_{, K. Chan}3_{, P. Chang}166_,

B. Chapleau86_{, J.D. Chapman}28_{, D. Charfeddine}116_{, D.G. Charlton}18_{, C.C. Chau}159_{, C.A. Chavez Barajas}150_,

S. Cheatham86, A. Chegwidden89, S. Chekanov6, S.V. Chekulaev160a, G.A. Chelkov64, M.A. Chelstowska88, C. Chen63, H. Chen25, K. Chen149, L. Chen33d,f, S. Chen33c, X. Chen146c, Y. Chen35, H.C. Cheng88, Y. Cheng31, A. Cheplakov64, R. Cherkaoui El Moursli136e, V. Chernyatin25,∗, E. Cheu7, L. Chevalier137, V. Chiarella47, G. Chiefari103a,103b, J.T. Childers6, A. Chilingarov71, G. Chiodini72a, A.S. Chisholm18, R.T. Chislett77, A. Chitan26a, M.V. Chizhov64, S. Chouridou9, B.K.B. Chow99, D. Chromek-Burckhart30, M.L. Chu152, J. Chudoba126_{, J.J. Chwastowski}39_{, L. Chytka}114_{, G. Ciapetti}133a,133b_{, A.K. Ciftci}4a_{, R. Ciftci}4a_{, D. Cinca}62_,

V. Cindro74_{, A. Ciocio}15_{, P. Cirkovic}13b_{, Z.H. Citron}173_{, M. Citterio}90a_{, M. Ciubancan}26a_{, A. Clark}49_{, P.J. Clark}46_,

R.N. Clarke15_{, W. Cleland}124_{, J.C. Clemens}84_{, C. Clement}147a,147b_{, Y. Coadou}84_{, M. Cobal}165a,165c_{, A. Coccaro}139_,

J. Cochran63_{, L. Coffey}23_{, J.G. Cogan}144_{, J. Coggeshall}166_{, B. Cole}35_{, S. Cole}107_{, A.P. Colijn}106_{, J. Collot}55_,

T. Colombo58c_{, G. Colon}85_{, G. Compostella}100_{, P. Conde Mui˜no}125a,125b_{, E. Coniavitis}167_{, M.C. Conidi}12_,

S.H. Connell146b_{, I.A. Connelly}76_{, S.M. Consonni}90a,90b_{, V. Consorti}48_{, S. Constantinescu}26a_{, C. Conta}120a,120b_,

G. Conti57_{, F. Conventi}103a,g_{, M. Cooke}15_{, B.D. Cooper}77_{, A.M. Cooper-Sarkar}119_{, N.J. Cooper-Smith}76_,

K. Copic15_{, T. Cornelissen}176_{, M. Corradi}20a_{, F. Corriveau}86,h_{, A. Corso-Radu}164_{, A. Cortes-Gonzalez}12_,

G. Cortiana100_{, G. Costa}90a_{, M.J. Costa}168_{, D. Costanzo}140_{, D. Cˆot´e}8_{, G. Cottin}28_{, G. Cowan}76_{, B.E. Cox}83_,

K. Cranmer109_{, G. Cree}29_{, S. Cr´ep´e-Renaudin}55_{, F. Crescioli}79_{, W.A. Cribbs}147a,147b_{, M. Crispin Ortuzar}119_,

M. Cristinziani21, V. Croft105, G. Crosetti37a,37b, C.-M. Cuciuc26a, T. Cuhadar Donszelmann140, J. Cummings177, M. Curatolo47, C. Cuthbert151, H. Czirr142, P. Czodrowski3, Z. Czyczula177, S. D’Auria53, M. D’Onofrio73, M.J. Da Cunha Sargedas De Sousa125a,125b, C. Da Via83, W. Dabrowski38a, A. Dafinca119, T. Dai88, O. Dale14, F. Dallaire94, C. Dallapiccola85, M. Dam36, A.C. Daniells18, M. Dano Hoffmann137, V. Dao105, G. Darbo50a, S. Darmora8_{, J.A. Dassoulas}42_{, A. Dattagupta}60_{, W. Davey}21_{, C. David}170_{, T. Davidek}128_{, E. Davies}119,c_,

M. Davies154_{, O. Davignon}79_{, A.R. Davison}77_{, P. Davison}77_{, Y. Davygora}58a_{, E. Dawe}143_{, I. Dawson}140_,

R.K. Daya-Ishmukhametova85_{, K. De}8_{, R. de Asmundis}103a_{, S. De Castro}20a,20b_{, S. De Cecco}79_{, N. De Groot}105_,

P. de Jong106_{, H. De la Torre}81_{, F. De Lorenzi}63_{, L. De Nooij}106_{, D. De Pedis}133a_{, A. De Salvo}133a_,

U. De Sanctis165a,165b_{, A. De Santo}150_{, J.B. De Vivie De Regie}116_{, W.J. Dearnaley}71_{, R. Debbe}25_{, C. Debenedetti}46_,

B. Dechenaux55_{, D.V. Dedovich}64_{, I. Deigaard}106_{, J. Del Peso}81_{, T. Del Prete}123a,123b_{, F. Deliot}137_,

C.M. Delitzsch49_{, M. Deliyergiyev}74_{, A. Dell’Acqua}30_{, L. Dell’Asta}22_{, M. Dell’Orso}123a,123b_{, M. Della Pietra}103a,g_,

D. della Volpe49_{, M. Delmastro}5_{, P.A. Delsart}55_{, C. Deluca}106_{, S. Demers}177_{, M. Demichev}64_{, A. Demilly}79_,

S.P. Denisov129_{, D. Derendarz}39_{, J.E. Derkaoui}136d_{, F. Derue}79_{, P. Dervan}73_{, K. Desch}21_{, C. Deterre}42_,

P.O. Deviveiros106_{, A. Dewhurst}130_{, S. Dhaliwal}106_{, A. Di Ciaccio}134a,134b_{, L. Di Ciaccio}5_{, A. Di Domenico}133a,133b_,

C. Di Donato103a,103b_{, A. Di Girolamo}30_{, B. Di Girolamo}30_{, A. Di Mattia}153_{, B. Di Micco}135a,135b_{, R. Di Nardo}47_,

A. Di Simone48, R. Di Sipio20a,20b, D. Di Valentino29, M.A. Diaz32a, E.B. Diehl88, J. Dietrich42, T.A. Dietzsch58a, S. Diglio84, A. Dimitrievska13a, J. Dingfelder21, C. Dionisi133a,133b, P. Dita26a, S. Dita26a, F. Dittus30, F. Djama84, T. Djobava51b, M.A.B. do Vale24c, A. Do Valle Wemans125a,125g, T.K.O. Doan5, D. Dobos30, C. Doglioni49, T. Doherty53, T. Dohmae156, J. Dolejsi128, Z. Dolezal128, B.A. Dolgoshein97,∗, M. Donadelli24d, S. Donati123a,123b, P. Dondero120a,120b_{, J. Donini}34_{, J. Dopke}30_{, A. Doria}103a_{, M.T. Dova}70_{, A.T. Doyle}53_{, M. Dris}10_{, J. Dubbert}88_,

S. Dube15_{, E. Dubreuil}34_{, E. Duchovni}173_{, G. Duckeck}99_{, O.A. Ducu}26a_{, D. Duda}176_{, A. Dudarev}30_{, F. Dudziak}63_,

L. Duflot116_{, L. Duguid}76_{, M. D¨uhrssen}30_{, M. Dunford}58a_{, H. Duran Yildiz}4a_{, M. D¨uren}52_{, A. Durglishvili}51b_,

M. Dwuznik38a_{, M. Dyndal}38a_{, J. Ebke}99_{, W. Edson}2_{, N.C. Edwards}46_{, W. Ehrenfeld}21_{, T. Eifert}144_{, G. Eigen}14_,

K. Einsweiler15_{, T. Ekelof}167_{, M. El Kacimi}136c_{, M. Ellert}167_{, S. Elles}5_{, F. Ellinghaus}82_{, N. Ellis}30_{, J. Elmsheuser}99_,

M. Elsing30_{, D. Emeliyanov}130_{, Y. Enari}156_{, O.C. Endner}82_{, M. Endo}117_{, R. Engelmann}149_{, J. Erdmann}177_,

A. Ereditato17_{, D. Eriksson}147a_{, G. Ernis}176_{, J. Ernst}2_{, M. Ernst}25_{, J. Ernwein}137_{, D. Errede}166_{, S. Errede}166_,

E. Ertel82_{, M. Escalier}116_{, H. Esch}43_{, C. Escobar}124_{, B. Esposito}47_{, A.I. Etienvre}137_{, E. Etzion}154_{, H. Evans}60_,

A. Ezhilov122_{, L. Fabbri}20a,20b_{, G. Facini}31_{, R.M. Fakhrutdinov}129_{, S. Falciano}133a_{, R.J. Falla}77_{, J. Faltova}128_,

P. Farthouat30, F. Fassi168, P. Fassnacht30, D. Fassouliotis9, A. Favareto50a,50b, L. Fayard116, P. Federic145a, O.L. Fedin122,i, W. Fedorko169, M. Fehling-Kaschek48, S. Feigl30, L. Feligioni84, C. Feng33d, E.J. Feng6, H. Feng88, A.B. Fenyuk129_{, S. Fernandez Perez}30_{, S. Ferrag}53_{, J. Ferrando}53_{, A. Ferrari}167_{, P. Ferrari}106_{, R. Ferrari}120a_,

D.E. Ferreira de Lima53_{, A. Ferrer}168_{, D. Ferrere}49_{, C. Ferretti}88_{, A. Ferretto Parodi}50a,50b_{, M. Fiascaris}31_,

F. Fiedler82_{, A. Filipˇciˇc}74_{, M. Filipuzzi}42_{, F. Filthaut}105_{, M. Fincke-Keeler}170_{, K.D. Finelli}151_,

M.C.N. Fiolhais125a,125c_{, L. Fiorini}168_{, A. Firan}40_{, J. Fischer}176_{, W.C. Fisher}89_{, E.A. Fitzgerald}23_{, M. Flechl}48_,

I. Fleck142_{, P. Fleischmann}88_{, S. Fleischmann}176_{, G.T. Fletcher}140_{, G. Fletcher}75_{, T. Flick}176_{, A. Floderus}80_,

L.R. Flores Castillo174,j_{, A.C. Florez Bustos}160b_{, M.J. Flowerdew}100_{, A. Formica}137_{, A. Forti}83_{, D. Fortin}160a_,

D. Fournier116_{, H. Fox}71_{, S. Fracchia}12_{, P. Francavilla}79_{, M. Franchini}20a,20b_{, S. Franchino}30_{, D. Francis}30_,

M. Franklin57_{, S. Franz}61_{, M. Fraternali}120a,120b_{, S.T. French}28_{, C. Friedrich}42_{, F. Friedrich}44_{, D. Froidevaux}30_,

J.A. Frost28_{, C. Fukunaga}157_{, E. Fullana Torregrosa}82_{, B.G. Fulsom}144_{, J. Fuster}168_{, C. Gabaldon}55_{, O. Gabizon}173_,

A. Gabrielli20a,20b_{, A. Gabrielli}133a,133b_{, S. Gadatsch}106_{, S. Gadomski}49_{, G. Gagliardi}50a,50b_{, P. Gagnon}60_,

C. Galea105, B. Galhardo125a,125c, E.J. Gallas119, V. Gallo17, B.J. Gallop130, P. Gallus127, G. Galster36,

K.K. Gan110, R.P. Gandrajula62, J. Gao33b,f, Y.S. Gao144,e, F.M. Garay Walls46, F. Garberson177, C. Garc´ıa168, J.E. Garc´ıa Navarro168, M. Garcia-Sciveres15, R.W. Gardner31, N. Garelli144, V. Garonne30, C. Gatti47,

G. Gaudio120a, B. Gaur142, L. Gauthier94, P. Gauzzi133a,133b, I.L. Gavrilenko95, C. Gay169, G. Gaycken21,

E.N. Gazis10, P. Ge33d, Z. Gecse169, C.N.P. Gee130, D.A.A. Geerts106, Ch. Geich-Gimbel21, K. Gellerstedt147a,147b, C. Gemme50a_{, A. Gemmell}53_{, M.H. Genest}55_{, S. Gentile}133a,133b_{, M. George}54_{, S. George}76_{, D. Gerbaudo}164_,

A. Gershon154_{, H. Ghazlane}136b_{, N. Ghodbane}34_{, B. Giacobbe}20a_{, S. Giagu}133a,133b_{, V. Giangiobbe}12_,

P. Giannetti123a,123b_{, F. Gianotti}30_{, B. Gibbard}25_{, S.M. Gibson}76_{, M. Gilchriese}15_{, T.P.S. Gillam}28_{, D. Gillberg}30_,

G. Gilles34_{, D.M. Gingrich}3,d_{, N. Giokaris}9_{, M.P. Giordani}165a,165c_{, R. Giordano}103a,103b_{, F.M. Giorgi}20a_,

F.M. Giorgi16_{, P.F. Giraud}137_{, D. Giugni}90a_{, C. Giuliani}48_{, M. Giulini}58b_{, B.K. Gjelsten}118_{, S. Gkaitatzis}155_,

I. Gkialas155,k_{, L.K. Gladilin}98_{, C. Glasman}81_{, J. Glatzer}30_{, P.C.F. Glaysher}46_{, A. Glazov}42_{, G.L. Glonti}64_,

M. Goblirsch-Kolb100_{, J.R. Goddard}75_{, J. Godfrey}143_{, J. Godlewski}30_{, C. Goeringer}82_{, S. Goldfarb}88_{, T. Golling}177_,

D. Golubkov129_{, A. Gomes}125a,125b,125d_{, L.S. Gomez Fajardo}42_{, R. Gon¸calo}125a_,

J. Goncalves Pinto Firmino Da Costa137_{, L. Gonella}21_{, S. Gonz´alez de la Hoz}168_{, G. Gonzalez Parra}12_,

M.L. Gonzalez Silva27_{, S. Gonzalez-Sevilla}49_{, L. Goossens}30_{, P.A. Gorbounov}96_{, H.A. Gordon}25_{, I. Gorelov}104_,

B. Gorini30, E. Gorini72a,72b, A. Goriˇsek74, E. Gornicki39, A.T. Goshaw6, C. G¨ossling43, M.I. Gostkin64,

M. Gouighri136a, D. Goujdami136c, M.P. Goulette49, A.G. Goussiou139, C. Goy5, S. Gozpinar23, H.M.X. Grabas137, L. Graber54, I. Grabowska-Bold38a, P. Grafstr¨om20a,20b, K-J. Grahn42, J. Gramling49, E. Gramstad118,

S. Grancagnolo16, V. Grassi149, V. Gratchev122, H.M. Gray30, E. Graziani135a, O.G. Grebenyuk122,

Z.D. Greenwood78,l_{, K. Gregersen}77_{, I.M. Gregor}42_{, P. Grenier}144_{, J. Griffiths}8_{, A.A. Grillo}138_{, K. Grimm}71_,

S. Grinstein12,m_{, Ph. Gris}34_{, Y.V. Grishkevich}98_{, J.-F. Grivaz}116_{, J.P. Grohs}44_{, A. Grohsjean}42_{, E. Gross}173_,

J. Grosse-Knetter54_{, G.C. Grossi}134a,134b_{, J. Groth-Jensen}173_{, Z.J. Grout}150_{, L. Guan}33b_{, F. Guescini}49_,

D. Guest177_{, O. Gueta}154_{, C. Guicheney}34_{, E. Guido}50a,50b_{, T. Guillemin}116_{, S. Guindon}2_{, U. Gul}53_{, C. Gumpert}44_,

J. Gunther127_{, J. Guo}35_{, S. Gupta}119_{, P. Gutierrez}112_{, N.G. Gutierrez Ortiz}53_{, C. Gutschow}77_{, N. Guttman}154_,

C. Guyot137_{, C. Gwenlan}119_{, C.B. Gwilliam}73_{, A. Haas}109_{, C. Haber}15_{, H.K. Hadavand}8_{, N. Haddad}136e_,

P. Haefner21_{, S. Hageb¨ock}21_{, Z. Hajduk}39_{, H. Hakobyan}178_{, M. Haleem}42_{, D. Hall}119_{, G. Halladjian}89_,

K. Hamacher176_{, P. Hamal}114_{, K. Hamano}170_{, M. Hamer}54_{, A. Hamilton}146a_{, S. Hamilton}162_{, P.G. Hamnett}42_,

L. Han33b_{, K. Hanagaki}117_{, K. Hanawa}156_{, M. Hance}15_{, P. Hanke}58a_{, R. Hanna}137_{, J.B. Hansen}36_{, J.D. Hansen}36_,

P.H. Hansen36_{, K. Hara}161_{, A.S. Hard}174_{, T. Harenberg}176_{, F. Hariri}116_{, S. Harkusha}91_{, D. Harper}88_,

R.D. Harrington46_{, O.M. Harris}139_{, P.F. Harrison}171_{, F. Hartjes}106_{, S. Hasegawa}102_{, Y. Hasegawa}141_{, A. Hasib}112_,

S. Hassani137, S. Haug17, M. Hauschild30, R. Hauser89, M. Havranek126, C.M. Hawkes18, R.J. Hawkings30, A.D. Hawkins80, T. Hayashi161, D. Hayden89, C.P. Hays119, H.S. Hayward73, S.J. Haywood130, S.J. Head18, T. Heck82, V. Hedberg80, L. Heelan8, S. Heim121, T. Heim176, B. Heinemann15, L. Heinrich109, S. Heisterkamp36, J. Hejbal126, L. Helary22, C. Heller99, M. Heller30, S. Hellman147a,147b, D. Hellmich21, C. Helsens30, J. Henderson119, R.C.W. Henderson71_{, C. Hengler}42_{, A. Henrichs}177_{, A.M. Henriques Correia}30_{, S. Henrot-Versille}116_{, C. Hensel}54_,

G.H. Herbert16_{, Y. Hern´andez Jim´enez}168_{, 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}168_{, E. Hill}170_{, J.C. Hill}28_{, K.H. Hiller}42_,

S. Hillert21_{, S.J. Hillier}18_{, I. Hinchliffe}15_{, E. Hines}121_{, M. Hirose}158_{, D. Hirschbuehl}176_{, J. Hobbs}149_{, N. Hod}106_,

M.C. Hodgkinson140_{, P. Hodgson}140_{, A. Hoecker}30_{, M.R. Hoeferkamp}104_{, J. Hoffman}40_{, D. Hoffmann}84_,

J.I. Hofmann58a_{, M. Hohlfeld}82_{, T.R. Holmes}15_{, T.M. Hong}121_{, L. Hooft van Huysduynen}109_{, J-Y. Hostachy}55_,

S. Hou152_{, A. Hoummada}136a_{, J. Howard}119_{, J. Howarth}42_{, M. Hrabovsky}114_{, I. Hristova}16_{, J. Hrivnac}116_,

T. Hryn’ova5_{, P.J. Hsu}82_{, S.-C. Hsu}139_{, D. Hu}35_{, X. Hu}25_{, Y. Huang}42_{, Z. Hubacek}30_{, F. Hubaut}84_{, F. Huegging}21_,

T.B. Huffman119_{, E.W. Hughes}35_{, G. Hughes}71_{, M. Huhtinen}30_{, T.A. H¨ulsing}82_{, M. Hurwitz}15_{, N. Huseynov}64,b_,

P. Iengo103a, O. Igonkina106, T. Iizawa172, Y. Ikegami65, K. Ikematsu142, M. Ikeno65, Y. Ilchenko31,n, D. Iliadis155, N. Ilic159, Y. Inamaru66, T. Ince100, P. Ioannou9, M. Iodice135a, K. Iordanidou9, V. Ippolito57, A. Irles Quiles168, C. Isaksson167_{, M. Ishino}67_{, M. Ishitsuka}158_{, R. Ishmukhametov}110_{, C. Issever}119_{, S. Istin}19a_{, J.M. Iturbe Ponce}83_,

R. Iuppa134a,134b_{, J. Ivarsson}80_{, W. Iwanski}39_{, H. Iwasaki}65_{, J.M. Izen}41_{, V. Izzo}103a_{, B. Jackson}121_{, M. Jackson}73_,

P. Jackson1_{, M.R. Jaekel}30_{, V. Jain}2_{, K. Jakobs}48_{, S. Jakobsen}30_{, T. Jakoubek}126_{, J. Jakubek}127_{, D.O. Jamin}152_,

D.K. Jana78_{, E. Jansen}77_{, H. Jansen}30_{, J. Janssen}21_{, M. Janus}171_{, G. Jarlskog}80_{, N. Javadov}64,b_{, T. Jav˚urek}48_,

L. Jeanty15_{, J. Jejelava}51a,o_{, G.-Y. Jeng}151_{, D. Jennens}87_{, P. Jenni}48,p_{, J. Jentzsch}43_{, C. Jeske}171_{, S. J´ez´equel}5_,

H. Ji174_{, W. Ji}82_{, J. Jia}149_{, Y. Jiang}33b_{, M. Jimenez Belenguer}42_{, S. Jin}33a_{, A. Jinaru}26a_{, O. Jinnouchi}158_,

M.D. Joergensen36_{, K.E. Johansson}147a_{, P. Johansson}140_{, K.A. Johns}7_{, K. Jon-And}147a,147b_{, G. Jones}171_,

R.W.L. Jones71_{, T.J. Jones}73_{, J. Jongmanns}58a_{, P.M. Jorge}125a,125b_{, K.D. Joshi}83_{, J. Jovicevic}148_{, X. Ju}174_,

C.A. Jung43_{, R.M. Jungst}30_{, P. Jussel}61_{, A. Juste Rozas}12,m_{, M. Kaci}168_{, A. Kaczmarska}39_{, M. Kado}116_,

H. Kagan110_{, M. Kagan}144_{, E. Kajomovitz}45_{, C.W. Kalderon}119_{, S. Kama}40_{, N. Kanaya}156_{, M. Kaneda}30_,

S. Kaneti28, T. Kanno158, V.A. Kantserov97, J. Kanzaki65, B. Kaplan109, A. Kapliy31, D. Kar53, K. Karakostas10, N. Karastathis10, M. Karnevskiy82, S.N. Karpov64, K. Karthik109, V. Kartvelishvili71, A.N. Karyukhin129,

L. Kashif174, G. Kasieczka58b, R.D. Kass110, A. Kastanas14, Y. Kataoka156, A. Katre49, J. Katzy42, V. Kaushik7, K. Kawagoe69, T. Kawamoto156, G. Kawamura54, S. Kazama156, V.F. Kazanin108, M.Y. Kazarinov64, R. Keeler170, R. Kehoe40, M. Keil54, J.S. Keller42, J.J. Kempster76, H. Keoshkerian5, O. Kepka126, B.P. Kerˇsevan74,

S. Kersten176_{, K. Kessoku}156_{, J. Keung}159_{, F. Khalil-zada}11_{, H. Khandanyan}147a,147b_{, A. Khanov}113_{, A. Khodinov}97_,

A. Khomich58a_{, T.J. Khoo}28_{, G. Khoriauli}21_{, A. Khoroshilov}176_{, V. Khovanskiy}96_{, E. Khramov}64_{, J. Khubua}51b_,

H.Y. Kim8_{, H. Kim}147a,147b_{, S.H. Kim}161_{, N. Kimura}172_{, O. Kind}16_{, B.T. King}73_{, M. King}168_{, R.S.B. King}119_,

S.B. King169_{, J. Kirk}130_{, A.E. Kiryunin}100_{, T. Kishimoto}66_{, D. Kisielewska}38a_{, F. Kiss}48_{, T. Kitamura}66_,

T. Kittelmann124_{, K. Kiuchi}161_{, E. Kladiva}145b_{, M. Klein}73_{, U. Klein}73_{, K. Kleinknecht}82_{, P. Klimek}147a,147b_,

A. Klimentov25_{, R. Klingenberg}43_{, J.A. Klinger}83_{, T. Klioutchnikova}30_{, P.F. Klok}105_{, E.-E. Kluge}58a_{, P. Kluit}106_,

S. Kluth100_{, E. Kneringer}61_{, E.B.F.G. Knoops}84_{, A. Knue}53_{, T. Kobayashi}156_{, M. Kobel}44_{, M. Kocian}144_,

P. Kodys128_{, P. Koevesarki}21_{, T. Koffas}29_{, E. Koffeman}106_{, L.A. Kogan}119_{, S. Kohlmann}176_{, Z. Kohout}127_,

T. Kohriki65_{, T. Koi}144_{, H. Kolanoski}16_{, I. Koletsou}5_{, J. Koll}89_{, A.A. Komar}95,∗_{, Y. Komori}156_{, T. Kondo}65_,

N. Kondrashova42_{, K. K¨oneke}48_{, A.C. K¨onig}105_{, S. K¨onig}82_{, T. Kono}65,q_{, R. Konoplich}109,r_{, N. Konstantinidis}77_,

R. Kopeliansky153, S. Koperny38a, L. K¨opke82, A.K. Kopp48, K. Korcyl39, K. Kordas155, A. Korn77, A.A. Korol108,s, I. Korolkov12, E.V. Korolkova140, V.A. Korotkov129, O. Kortner100, S. Kortner100, V.V. Kostyukhin21,

V.M. Kotov64, A. Kotwal45, C. Kourkoumelis9, V. Kouskoura155, A. Koutsman160a, R. Kowalewski170, T.Z. Kowalski38a, W. Kozanecki137, A.S. Kozhin129, V. Kral127, V.A. Kramarenko98, G. Kramberger74, D. Krasnopevtsev97_{, M.W. Krasny}79_{, A. Krasznahorkay}30_{, J.K. Kraus}21_{, A. Kravchenko}25_{, S. Kreiss}109_,

M. Kretz58c_{, J. Kretzschmar}73_{, K. Kreutzfeldt}52_{, P. Krieger}159_{, K. Kroeninger}54_{, H. Kroha}100_{, J. Kroll}121_,

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

A. Kruse174_{, M.C. Kruse}45_{, M. Kruskal}22_{, T. Kubota}87_{, S. Kuday}4a_{, S. Kuehn}48_{, A. Kugel}58c_{, A. Kuhl}138_,

T. Kuhl42_{, V. Kukhtin}64_{, Y. Kulchitsky}91_{, S. Kuleshov}32b_{, M. Kuna}133a,133b_{, J. Kunkle}121_{, A. Kupco}126_,

H. Kurashige66_{, Y.A. Kurochkin}91_{, R. Kurumida}66_{, V. Kus}126_{, E.S. Kuwertz}148_{, M. Kuze}158_{, J. Kvita}114_,

A. La Rosa49_{, L. La Rotonda}37a,37b_{, C. Lacasta}168_{, F. Lacava}133a,133b_{, J. Lacey}29_{, H. Lacker}16_{, D. Lacour}79_,

V.R. Lacuesta168_{, E. Ladygin}64_{, R. Lafaye}5_{, B. Laforge}79_{, T. Lagouri}177_{, S. Lai}48_{, H. Laier}58a_{, L. Lambourne}77_,

S. Lammers60_{, C.L. Lampen}7_{, W. Lampl}7_{, E. Lan¸con}137_{, U. Landgraf}48_{, M.P.J. Landon}75_{, V.S. Lang}58a_,

C. Lange42_{, A.J. Lankford}164_{, F. Lanni}25_{, K. Lantzsch}30_{, S. Laplace}79_{, C. Lapoire}21_{, J.F. Laporte}137_{, T. Lari}90a_,

M. Lassnig30_{, P. Laurelli}47_{, W. Lavrijsen}15_{, A.T. Law}138_{, P. Laycock}73_{, B.T. Le}55_{, O. Le Dortz}79_{, E. Le Guirriec}84_,

E. Le Menedeu12, T. LeCompte6, F. Ledroit-Guillon55, C.A. Lee152, H. Lee106, J.S.H. Lee117, S.C. Lee152, L. Lee177, G. Lefebvre79, M. Lefebvre170, F. Legger99, C. Leggett15, A. Lehan73, M. Lehmacher21, G. Lehmann Miotto30, X. Lei7, W.A. Leight29, A. Leisos155, A.G. Leister177, M.A.L. Leite24d, R. Leitner128, D. Lellouch173, B. Lemmer54, K.J.C. Leney77, T. Lenz106, G. Lenzen176, B. Lenzi30, R. Leone7, K. Leonhardt44, S. Leontsinis10, C. Leroy94, C.G. Lester28_{, C.M. Lester}121_{, M. Levchenko}122_{, J. Levˆeque}5_{, D. Levin}88_{, L.J. Levinson}173_{, M. Levy}18_{, A. Lewis}119_,

G.H. Lewis109_{, A.M. Leyko}21_{, M. Leyton}41_{, B. Li}33b,t_{, B. Li}84_{, H. Li}149_{, H.L. Li}31_{, L. Li}45_{, L. Li}33e_{, S. Li}45_,

Y. Li33c,u_{, Z. Liang}138_{, H. Liao}34_{, B. Liberti}134a_{, P. Lichard}30_{, K. Lie}166_{, J. Liebal}21_{, W. Liebig}14_{, C. Limbach}21_,

A. Limosani87_{, S.C. Lin}152,v_{, T.H. Lin}82_{, F. Linde}106_{, B.E. Lindquist}149_{, J.T. Linnemann}89_{, E. Lipeles}121_,

A. Lipniacka14_{, M. Lisovyi}42_{, T.M. Liss}166_{, D. Lissauer}25_{, A. Lister}169_{, A.M. Litke}138_{, B. Liu}152_{, D. Liu}152_,

J.B. Liu33b_{, K. Liu}33b,w_{, L. Liu}88_{, M. Liu}45_{, M. Liu}33b_{, Y. Liu}33b_{, M. Livan}120a,120b_{, S.S.A. Livermore}119_,

A. Lleres55_{, J. Llorente Merino}81_{, S.L. Lloyd}75_{, F. Lo Sterzo}152_{, E. Lobodzinska}42_{, P. Loch}7_{, W.S. Lockman}138_,

T. Loddenkoetter21_{, F.K. Loebinger}83_{, A.E. Loevschall-Jensen}36_{, A. Loginov}177_{, C.W. Loh}169_{, T. Lohse}16_,

K. Lohwasser42_{, M. Lokajicek}126_{, V.P. Lombardo}5_{, B.A. Long}22_{, J.D. Long}88_{, R.E. Long}71_{, L. Lopes}125a_,