PHYSICAL REVIEW LETTERS 123, 042001 (2019) Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb + Pb Collisions in ATLAS M. Aaboud et al.* (ATLAS Collaboration) (Received 28 February 2019; revised manuscript received 21 May 2019; published 22 July 2019) Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse- momentum, prompt, isolated photon are measured in 25 pb−1 of pp and 0.49 nb−1 of Pb þ Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb þ Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb þ Pb events. DOI: 10.1103/PhysRevLett.123.042001 Ultrarelativistic nucleus-nucleus collisions create a likely to be initiated by the showering of a light quark, quark-gluon plasma, a hot, dense, and long-lived system whereas inclusive jets are mostly initiated by gluons. Thus, of deconfined quarks and gluons. The high density of γ-tagged jets can provide information about how energy unscreened color charges causes hard-scattered partons loss depends on the color charge of the initiating parton. with large transverse momentum (pT ) to lose energy as Finally, the photon selection equally samples all geometric they traverse the medium, a phenomenon referred to as jet production points, whereas the inclusive selection may be quenching. In lead-lead (Pb þ Pb) collisions at the Large biased towards jets which have lost less energy or were Hadron Collider (LHC), jet production rates at fixed pT are produced near the surface of the medium [13–15]. suppressed relative to proton-proton (pp) collisions [1–4]. Many theoretical models of jet quenching have high- Since the parton shower develops inside the quark-gluon lighted the value of γ-tagged jet measurements [16–18], plasma, the momentum distributions of hadrons in the inviting systematic comparisons of these with inclusive jet quenched jet are also modified. Measurements of the jet measurements and with theoretical predictions for inclusive fragmentation function (FF) for inclusively produced jets in and γ-tagged jets. The comparisons are best performed if Pb þ Pb collisions [5–7] exhibit differences from pp the measurements are fully corrected for detector effects collisions. In these measurements, jets are selected by their and presented at particle level. This Letter presents such a final-state pT , i.e., after the effects of quenching, which measurement of the FF in high-pT jets azimuthally bal- may result in a bias towards jets that have suffered only anced by a prompt, isolated photon in pp and Pb þ Pb modest modifications and complicates interpretation of the collisions at a center-of-mass energy of 5.02 TeV per data [8,9]. Alternatively, the initial parton pT can be tagged nucleon pair, using data samples with integrated luminos- with a particle unaffected by the medium, such as a photon ities of 25 pb−1 and 0.49 nb−1 , respectively. Photon-hadron (γ) [10–12]. The photon approximately balances the parton pT correlations in gold-gold collisions were measured at pT before quenching and, thus, selects populations of jets the Relativistic Heavy Ion Collider [19,20]. A measurement in pp and Pb þ Pb collisions with identical initial con- of the γ-tagged jet FF at the LHC compared the FF at ditions. A jet recoiling against a prompt photon is more detector level with theoretical calculations that parametrize the detector smearing effects [21]. * Full author list given at the end of the article. Following previous measurements in ATLAS [5,6], the FF for a jet to contain a charged particle with a Published by the American Physical Society under the terms of given pT , η, and ϕ [22] is expressed as DðpT Þ ¼ the Creative Commons Attribution 4.0 International license. ð1=N jet Þ½dN ch ðpT Þ=dpT  or DðzÞ ¼ ð1=N jet Þ½dN ch ðzÞ=dz Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, where N jet is the total number of jets, N ch is the number of and DOI. charged particles associated with a jet, and the longitudinal 0031-9007=19=123(4)=042001(21) 042001-1 © 2019 CERN, for the ATLAS Collaboration PHYSICAL REVIEW LETTERS 123, 042001 (2019) momentum fraction, z, is defined as pT cos ðΔRÞ=pjet T , Photons are measured following a procedure used ΔR ¼ ½ðηjet − ηpart Þ2 þ ðϕjet − ϕpart Þ2 1=2 . Only particles previously in Pb þ Pb collisions [10,11], which includes with ΔR < 0.4 are considered. an event-by-event estimation and subtraction of the UE The principal components of the ATLAS detector contribution to the energy deposited in each calorimeter [23,24] used in this measurement are the inner tracking cell [37]. Photon candidates are reconstructed from clusters detector, electromagnetic and hadronic calorimeters, and an of energy in the calorimeter and identified using require- online trigger system. The inner detector is immersed ments on the properties of their showers [38]. Events with a in a 2 T axial magnetic field and provides charged- prompt, isolated photon with EγT in the range 80 to particle tracking in the range jηj < 2.5. It consists of a 126 GeV (chosen to match the range used in Ref. [11]) high-granularity silicon pixel detector, a silicon microstrip and absolute pseudorapidity smaller than 2.37, excluding tracker, and a transition radiation tracker. In the region the region 1.37–1.56 which has more inactive material, are jηj < 3.2, electromagnetic calorimetry is provided by barrel selected for analysis. The isolation energy, Eiso T , is deter- and end cap high-granularity lead and liquid-argon (LAr) mined from the sum of the transverse energy in cells inside sections divided into three layers in depth. Hadronic a cone size of ΔR ¼ 0.3 centered on the photon after calorimetry is provided by a steel and scintillator-tile subtracting the photon’s contribution to this quantity and is calorimeter, segmented into three barrel structures within required to be EisoT < 3 GeV (< 10 GeV) in pp (Pb þ Pb) jηj < 1.7, and two copper-LAr hadronic end cap calorim- collisions. eters, covering the region 1.5 < jηj < 3.2. The forward The combined photon reconstruction and selection calorimeter is composed of copper-LAr and tungsten-LAr efficiencies in pp, peripheral, and central Pb þ Pb events modules and extends the coverage to jηj ¼ 4.9. During data are ≈90%, 85%, and 65%–70%, and approximately 10000, taking, events with a high transverse energy (EγT ) photon 1800, and 6800 photons are selected, respectively. The are selected using a two-level trigger system based on selected sample contains backgrounds from hadrons and energy deposition in the electromagnetic calorimeter [25]. nonisolated photons, called fake photons, that must be Events in Pb þ Pb and pp data with photon candidates removed statistically. The background contribution is are selected by the trigger and are required to contain a determined using a double-sideband approach [10,39,40] vertex reconstructed from inner-detector tracks. Two cen- in which the identification and isolation requirements are trality classes of Pb þ Pb events are defined using the total inverted to select background-enriched samples. These are transverse P energy measured in the forward calorimeter, used to estimate the purity of the selection, which is ET . Central events, which are thoseP with a large nuclear ≈80%–94% depending on the collision system. overlap, are defined as those with ET values in the Jets are measured following the procedure used previ- highest 30% percentile (0%–30%) P of all Pb þ Pb events. ously in pp and Pb þ Pb collisions [1,37,41]. The anti-kt Peripheral events have a ET value in the 30%–80% algorithm [42] with R ¼ 0.4 is applied to Δη × Δϕ ¼ percentile and a smaller nuclear overlap region. The mean 0.1 × 0.1 calorimeter towers. An iterative procedure is used number of nucleon-nucleon collisions in these events is to obtain an event-by-event estimate of the average η- 1080  70 and 135  9, respectively, evaluated using the dependent UE energy density, while excluding jets from Glauber model [26]. that estimate. The jet kinematics are corrected for this Monte Carlo (MC) simulations are used to study the background and for the detector response using an η- and performance of the detector and provide comparisons with pT -dependent calibration derived from simulation and data. The main simulation sample was generated with the additional small corrections from in situ studies [43,44]. PYTHIA 8.186 [27] generator, with the NNPDF23LO Jets are required to have 63 GeV < pjet T < 144 GeV and parton distribution function (PDF) set [28], and parameters jηjet j < 2.1, and be azimuthally balanced with the photon, tuned to reproduce pp data (“A14” tune) [29]. Events with separation jΔϕj > 7π=8. All γ-jet pairs meeting the were passed through a full GEANT4 simulation of the criteria are included in the analysis, but the requirements detector [30,31], and reconstructed in the same way as the mainly select topologies with a single high-pT balancing jet data. Two million pp events were generated, and an [11,45]. In simulation, the pjet T scale is within 1% of unity, additional sample of eight million events were overlaid with Pb þ Pb collision data to describe the effects of the while the resolution at pjetT ¼ 63 GeV is 21% in central underlying event (UE). Additional samples of SHERPA Pb þ Pb events, 12% in pp events, and improves with 2.1.1 [32] events using the CT10 PDF [33] and HERWIG 7 increasing pjetT . Among these jets, 73%–83% are quark jets [34] events with the MMHT H7UE tune and leading-order depending on the generator. The jet flavor is defined by the PDF set [35], which have a different description of highest-pT parton within ΔR < 0.4 of the jet [46]. γ+multijet topologies, quark-gluon jet composition, and The jet yield N jet is corrected for the combinatorial hadronization, are used to study systematic uncertainties. pairings of the photon with a jet not associated with the At particle level, jets and photon isolation energies are photon-producing hard scattering, and for the contribution defined using stable particles [36]. of jets paired with fake photons. The first is evaluated in the 042001-2 PHYSICAL REVIEW LETTERS 123, 042001 (2019) data-overlay simulation and subtracted on a per-photon determination of the photon purity, which is evaluated as basis. The second is subtracted by measuring this yield in in Ref. [11]. Uncertainties related to the charged-particle the background-dominated sidebands described above and yield measurement are described in detail in Ref. [6]. scaling it to match the determined impurity. After these The sensitivity to the unfolding and physics modeling is background corrections, the yields are corrected for the determined through a pseudoexperiment resampling of the effects of bin migration, which are small due to the large response matrices, varying the prior distributions used in pjet T range of the measurement relative to the resolution. the unfolding, and using the SHERPA simulation instead of The FFs DðzÞ and DðpT Þ are measured using the PYTHIA8 to perform the unfolding. For uncertainty sources differential yield of charged particles with pT > 1 GeV, with up or down variations, the changes in the results are N ch , within γ-balancing jets, divided by the total jet yield averaged to make a symmetric uncertainty. For those with a N jet . This approach was used in previous measurements single variation, an identical uncertainty in the opposite [5,47] and is needed, together with the unfolding procedure direction is assigned. described below, to account for the simultaneous bin Many of these variations change N jet and N ch in a migration in the jet and particle kinematic variables, which significant but highly correlated way, with the result that is correlated through the fragmentation of each jet. the FFs are less sensitive to them. Furthermore, most Charged-particle tracks are reconstructed from hits in the uncertainties are correlated between the pp and Pb þ Pb inner detector using an algorithm that is optimized for the systems, and these partially cancel out when they are high-occupancy conditions in Pb þ Pb collisions [2,6]. evaluated for the ratios of FFs. The total uncertainties in the They are required to meet several criteria including a DðzÞ and DðpT Þ distributions and their ratios are typically minimum number of hits, the presence of hits predicted 5% at moderate z or pT values. At low pT or z, the track- by the algorithm, and a small distance-of-closest approach related uncertainties rise sharply due to the high occupan- to the vertex. cies in Pb þ Pb events. At large pT or z, where the FF is The raw charged-particle yield N ch ðzÞ or N ch ðpT Þ is very steeply falling, the uncertainties related to the choice initially determined by measuring the two-dimensional of prior and physics models dominate. Figure 1 shows the corrected DðpT Þ and DðzÞ distribu- (pjet jet T , pT ) or ðpT ; zÞ distribution. Each entry is corrected tions for jets azimuthally balanced by a high-pT photon in for the tracking efficiency at the given pT and η, which pp events, and in central and peripheral Pb þ Pb events. varies from 60% to 80% depending on occupancy and The γ-tagged jet FF in pp collisions is observed to be pseudorapidity. Three background contributions are esti- harder than the FF for inclusive jets at the same collision mated and are subtracted statistically: (1) UE particles and misreconstructed or secondary tracks, estimated using the energy with pjetT in the range of 80–110 GeV, coinciding rate of tracks not matched to a generated particle in the with the peak of the γ-tagged pjetT distribution [47]. This is data-overlay simulation, (2) charged particles in jets not consistent with the two samples having different quark jet produced in the same hard process as the photon, also fractions, and with expectations from, e.g., data from the estimated in simulation, and (3) the charged-particle yield Large Electron-Positron collider [51–53], where harder FFs in jets correlated with fake photons, determined using the for quark jets were observed compared with those for gluon sideband approach described above. jets. The pp data are also compared with generator The two-dimensional yield is corrected for bin migration distributions, which are typically compatible with the data along both axes using a Bayesian unfolding procedure at low to moderate values of z or pT within uncertainties. [48,49] as in previous dijet and γ-jet measurements [11,50]. The left and central panels of Fig. 2 summarize ratios of The simulated pjet the γ-tagged FFs in Pb þ Pb events to those in pp events, T distributions are reweighted to match those in data, and the number of unfolding iterations and compares them to those for inclusively selected jets is chosen to minimize the combination of the total statistical with pjet T ¼ 100–126 GeV measured in 2.76 TeV Pb þ Pb uncertainty and residual sensitivity to the assumed and pp collisions [5]. Although the collision energy and prior distribution. Because of the large size of the kinematic pjet T range are slightly different than that for the γ-tagged jet bins relative to the experimental resolution, the unfolding data, inclusive jet FFs in this region have been observed to changes the yields by typically 5% (10%) in pp (Pb þ Pb) be compatible at the two energies and in nearby pjet T ranges collisions. This procedure is further validated with a test within uncertainties [6]. Since the inclusive-jet measure- performed by dividing the simulated events into statistically ment uses different centrality ranges, the centrality range independent halves. corresponding to the top of that in the γ-tagged measure- The measurement and correction of the pjet T is affected ment is chosen (i.e., 0%–10% for 0%–30% in the γ-tagged by uncertainties in the jet energy scale and resolution, case, and 30%–40% for 30%–80%). In peripheral colli- which are evaluated following the procedure [44] used in sions, the modification pattern is quantitatively similar for previous ATLAS measurements of heavy-ion collisions. both sets of jets, featuring a depletion at moderate z or pT , The fake photon background subtraction is sensitive to the and an enhancement at very low and very high z or pT . 042001-3 PHYSICAL REVIEW LETTERS 123, 042001 (2019) 0.49 nb-1 Pb+Pb 104 0.49 nb-1 Pb+Pb 102 25 pb-1 pp 25 pb-1 pp 10 5.02 TeV 103 5.02 TeV D (p ) [GeV-1] 1 102 D (z ) 10−1 ATLAS 10 ATLAS T γ jet γ jet p = 80-126 GeV, p = 63-144 GeV p = 80-126 GeV, p = 63-144 GeV 10−2 T T 1 T T 0-30% Pb+Pb (×102), γ -tag 0-30% Pb+Pb (×102), γ -tag −3 −1 10 30-80% Pb+Pb (×10 ), γ -tag 1 10 30-80% Pb+Pb (×101), γ -tag 0 pp (×10 ), γ -tag pp (×100), γ -tag 10−4 10−2 jet jet pp , inclusive jets, p = 80-110 GeV pp , inclusive jets, p = 80-110 GeV T T 10−1 Ratio to γ -tag pp Ratio to γ -tag pp 1.3 1.3 p [GeV] z T 1 1 PYTHIA8 A14 NNPDF23LO PYTHIA8 A14 NNPDF23LO SHERPA CT10 SHERPA CT10 0.5 Herwig H7UE MMHT2014lo 0.5 Herwig H7UE MMHT2014lo 1 10 100 0.016 0.1 1 p T [GeV] z FIG. 1. Fragmentation function (FF) in γ-tagged jets in pp events, and in central and peripheral Pb þ Pb events, as a function of charged-particle transverse momentum pT (left) and longitudinal momentum fraction z (right). The pp results are compared with the analogous distribution in MC generators (dashed lines) and with the FF for inclusive jets in a similar pjet T range (red squares). The shaded bands correspond to the total systematic uncertainties in the data. The bottom panels show the ratios of MC distributions and inclusive jet data, in pp collisions, to the γ-tagged jet data, with these data plotted at unity. 1.8 ATLAS 0.49 nb-1 Pb+Pb γ -tagged jets 5.02 TeV γ p T = 80-126 GeV 25 pb-1 pp 1.6 inclusive jets 2.76 TeV Ratio of D (p ) p jet = 63-144 GeV T T 1.4 1.2 1 0.8 0.6 30-80% Pb+Pb / pp 0-30% Pb+Pb / pp 0-30% Pb+Pb / 30-80% Pb+Pb 1 10 100 1 10 100 1 10 100 p [GeV] p [GeV] p [GeV] T T T 1.6 ATLAS 0.49 nb-1 Pb+Pb γ -tagged jets 5.02 TeV γ p T = 80-126 GeV 25 pb-1 pp 1.4 inclusive jets 2.76 TeV Ratio of D (z ) p jet T = 63-144 GeV 1.2 1 0.8 30-80% Pb+Pb / pp 0-30% Pb+Pb / pp 0-30% Pb+Pb / 30-80% Pb+Pb 0.6 1 0.01 10 0.1 100 1 0.01 1 0.1 10 100 1 1 0.01 10 0.1 100 1 z z z FIG. 2. Ratio of the fragmentation function in jets azimuthally balanced by a high-pT photon: 30%–80% Pb þ Pb collisions to pp collisions (left panels); 0%–30% Pb þ Pb collisions to pp collisions (central panels); and 0%–30% to 30%–80% Pb þ Pb collisions (right panels). Results are shown as a function of charged-particle transverse momentum pT (top panels) or longitudinal momentum fraction z (bottom panels), for γ-tagged jets (this measurement, full markers) and for inclusive jets in 2.76 TeV Pb þ Pb collisions [5,54] (see text, open markers). The centrality selections for the inclusive jet data are 0%–10% (left), 30%–40% (central), and (0%–10%)/ (30%–40%) (right). Hatched bands and vertical bars show for each measurement the total systematic and statistical uncertainties, respectively. 042001-4 PHYSICAL REVIEW LETTERS 123, 042001 (2019) γ γ γ -tag (p = 80-126 GeV, p jet = 63-144 GeV) γ -tag (p = 80-126 GeV, p jet = 63-144 GeV) 1.6 T T 1.6 T T Data, 5.02 TeV, 0-30% Pb+Pb / pp Data, 5.02 TeV, 0-30% Pb+Pb / pp 1.5 1.5 SCET G SCET G Inclusive jets (p jet = 80-110 GeV) 1.4 Hybrid 1.4 T Data, 2.76 TeV, 0-10% Pb+Pb / pp Ratio of D (z ) Ratio of D (z ) 1.3 CoLBT-hydro 1.3 SCET G 1.2 1.2 1.1 1.1 1 1 0.9 ATLAS 0.9 ATLAS -1 -1 0.8 pp 25 pb 0.8 pp 25 pb Pb+Pb 0.49 nb-1 Pb+Pb 0.49 nb-1 0.7 −2 0.7 −2 10 10−1 1 10 10−1 1 z z FIG. 3. Comparison of the ratio of γ-tagged fragmentation function DðzÞ in central Pb þ Pb events to pp events with theoretical calculations (left). The mutual comparison between γ-tagged and inclusive jet DðzÞ ratios in data to each of these in the SCETG model is shown in the right panel. Shaded rectangles and vertical bars show the total systematic and statistical uncertainties, respectively, in the data. However, in central collisions, γ-tagged jets show an addi- The measurement is performed using 25 pb−1 of pp and tional relative suppression at high z or pT and a counter- 0.49 nb−1 of Pb þ Pb collision data at 5.02 TeV, with the balancing enhancement at low z or pT . In addition, the ATLAS detector at the LHC. The kinematic selections minimum value of the Pb þ Pb-to-pp ratio for γ-tagged jets result in events with a single leading jet, a large fraction of is shifted to larger z or pT values. which are quark jets. In pp collisions, the γ-tagged jet To further explore the relative change in the FF between fragmentation functions are systematically harder than Pb þ Pb event classes, the ratio between central and those for inclusive jets at similar pjet T , consistent with the peripheral collisions is shown in the right panels of larger expected fraction of quark jets in γ-tagged events. In Fig. 2. For γ-tagged jets, the ratio is consistent with a 30%–80% centrality Pb þ Pb events, γ-tagged jets are decreasing linear function of logðzÞ or logðpT Þ, crossing observed to be modified through interaction with the unity at z ≈ 0.1 or pT ≈ 10 GeV. It is inconsistent with medium, with an overall pattern consistent with that for the analogous ratio for inclusive jets, which is closer to inclusive jets. However, jets in γ-tagged events are modified unity. Thus, the data indicate that, in central collisions, jets in 0%–30% Pb þ Pb events in a manner not observed for in γ-tagged events are modified in a different way than inclusive jets. The SCETG calculation describes this key inclusively selected jets. feature of the data. However, interpreting this observed In Fig. 3, the data in central events are compared with the difference is complicated by the different jet populations in results of theoretical calculations at particle level. In the left the two cases. In Pb þ Pb collisions, the inclusive jet panel, these include: (1) a perturbative calculation within population at fixed pjet T is biased towards jets which have the framework of soft-collinear effective field theory with lost the least amount of energy. In a geometric picture, such Glauber gluons (SCETG ) in the soft-gluon-emission a survivor bias selects jets produced only near the surface of (energy-loss) limit, with jet-medium coupling g ¼ 2.10.1 the medium. This bias is largely avoided for γ-tagged jets, [55,56], (2) the hybrid strong and weak coupling model which can be selected based on the photon kinematics. [16], which combines initial production using PYTHIA Thus, they may include jets that are more quenched, on with a parametrization of energy loss derived from holo- average, than inclusively selected jets, including ones graphic methods, including back reaction effects, and which sample particularly large path lengths. (3) the linearized Boltzmann transport (CoLBT-hydro) model [57] of parton propagation through quark-gluon We thank CERN for the very successful operation of the plasma with jet-induced medium-excitation effects. The LHC, as well as the support staff from our institutions SCETG calculation and the CoLBT-hydro model success- without whom ATLAS could not be operated efficiently. fully capture the key features of the γ-tagged jet FF data in We acknowledge the support of ANPCyT, Argentina; the region z < 0.5. In the right panel, the inclusive and γ- YerPhI, Armenia; ARC, Australia; BMWFW and FWF, tagged FF ratios in data are compared with those in SCETG . Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and The γ-tagged FF ratio is larger than the inclusive-jet one in FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; the region z < 0.1 in both data and theory. CONICYT, Chile; CAS, MOST, and NSFC, China; In summary, this Letter presents a measurement of the COLCIENCIAS, Colombia; MSMT CR, MPO CR, and charged-particle fragmentation functions for jets azimu- VSC CR, Czech Republic; DNRF and DNSRC, Denmark; thally balanced by a high-pT T prompt and isolated photon. IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, 042001-5 PHYSICAL REVIEW LETTERS 123, 042001 (2019) Georgia; BMBF, HGF, and MPG, Germany; GSRT, [8] J. Casalderrey-Solana, D. C. Gulhan, J. G. Milhano, D. Greece; RGC, Hong Kong SAR, China; ISF and Pablos, and K. 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Daubney,44 S. D’Auria,55 W. Davey,24 C. David,44 T. Davidek,140 D. R. Davis,47 E. Dawe,102 I. Dawson,146 K. De,8 R. De Asmundis,67a A. De Benedetti,125 M. De Beurs,118 S. De Castro,23b,23a S. De Cecco,70a,70b N. De Groot,117 P. de Jong,118 H. De la Torre,104 F. De Lorenzi,76 A. De Maria,51,r D. De Pedis,70a A. De Salvo,70a U. De Sanctis,71a,71b A. De Santo,153 K. De Vasconcelos Corga,99 J. B. De Vivie De Regie,129 C. Debenedetti,143 D. V. Dedovich,77 N. Dehghanian,3 M. Del Gaudio,40b,40a J. Del Peso,96 Y. Delabat Diaz,44 D. Delgove,129 F. Deliot,142 C. M. Delitzsch,7 M. Della Pietra,67a,67b D. Della Volpe,52 A. Dell’Acqua,35 L. Dell’Asta,25 M. Delmastro,5 C. Delporte,129 P. A. Delsart,56 D. A. DeMarco,164 S. Demers,180 M. Demichev,77 S. P. Denisov,121 D. Denysiuk,118 L. D’Eramo,133 D. Derendarz,82 J. E. Derkaoui,34d F. Derue,133 P. Dervan,88 K. Desch,24 C. Deterre,44 K. Dette,164 M. R. Devesa,30 P. O. Deviveiros,35 A. Dewhurst,141 S. Dhaliwal,26 F. A. Di Bello,52 A. Di Ciaccio,71a,71b L. Di Ciaccio,5 W. K. Di Clemente,134 C. Di Donato,67a,67b A. Di Girolamo,35 B. Di Micco,72a,72b R. Di Nardo,100 K. F. Di Petrillo,57 R. Di Sipio,164 D. Di Valentino,33 C. Diaconu,99 M. Diamond,164 F. A. Dias,39 T. Dias Do Vale,137a M. A. Diaz,144a J. Dickinson,18 E. B. Diehl,103 J. Dietrich,19 S. Díez Cornell,44 A. Dimitrievska,18 J. Dingfelder,24 F. Dittus,35 F. Djama,99 T. Djobava,156b J. I. Djuvsland,59a M. A. B. Do Vale,78c M. Dobre,27b D. Dodsworth,26 C. Doglioni,94 J. Dolejsi,140 Z. Dolezal,140 M. Donadelli,78d J. Donini,37 A. D’onofrio,90 M. D’Onofrio,88 J. Dopke,141 A. Doria,67a M. T. Dova,86 A. T. Doyle,55 E. Drechsler,51 E. Dreyer,149 T. Dreyer,51 Y. Du,58b J. Duarte-Campderros,158 F. Dubinin,108 M. Dubovsky,28a A. Dubreuil,52 E. Duchovni,177 G. Duckeck,112 A. Ducourthial,133 O. A. Ducu,107,s D. Duda,113 A. Dudarev,35 A. C. Dudder,97 E. M. Duffield,18 L. Duflot,129 M. Dührssen,35 C. Dülsen,179 M. Dumancic,177 A. E. Dumitriu,27b,t A. K. Duncan,55 M. Dunford,59a A. Duperrin,99 H. Duran Yildiz,4a M. Düren,54 A. Durglishvili,156b D. Duschinger,46 B. Dutta,44 D. Duvnjak,1 M. Dyndal,44 S. Dysch,98 B. S. Dziedzic,82 C. Eckardt,44 042001-9 PHYSICAL REVIEW LETTERS 123, 042001 (2019) K. M. Ecker,113 R. C. Edgar,103 T. Eifert,35 G. Eigen,17 K. Einsweiler,18 T. Ekelof,169 M. El Kacimi,34c R. El Kosseifi,99 V. Ellajosyula,99 M. Ellert,169 F. Ellinghaus,179 A. A. Elliot,90 N. Ellis,35 J. Elmsheuser,29 M. Elsing,35 D. Emeliyanov,141 Y. Enari,160 J. S. Ennis,175 M. B. Epland,47 J. Erdmann,45 A. Ereditato,20 S. Errede,170 M. Escalier,129 C. Escobar,171 O. Estrada Pastor,171 A. I. Etienvre,142 E. Etzion,158 H. Evans,63 A. Ezhilov,135 M. Ezzi,34e F. Fabbri,55 L. Fabbri,23b,23a V. Fabiani,117 G. Facini,92 R. M. Faisca Rodrigues Pereira,137a R. M. Fakhrutdinov,121 S. Falciano,70a P. J. Falke,5 S. Falke,5 J. Faltova,140 Y. Fang,15a M. Fanti,66a,66b A. Farbin,8 A. Farilla,72a E. M. Farina,68a,68b T. Farooque,104 S. Farrell,18 S. M. Farrington,175 P. Farthouat,35 F. Fassi,34e P. Fassnacht,35 D. Fassouliotis,9 M. Faucci Giannelli,48 A. Favareto,53b,53a W. J. Fawcett,52 L. Fayard,129 O. L. Fedin,135,u W. Fedorko,172 M. Feickert,41 S. Feigl,131 L. Feligioni,99 C. Feng,58b E. J. Feng,35 M. Feng,47 M. J. Fenton,55 A. B. Fenyuk,121 L. Feremenga,8 J. Ferrando,44 A. Ferrari,169 P. Ferrari,118 R. Ferrari,68a D. E. Ferreira de Lima,59b A. Ferrer,171 D. Ferrere,52 C. Ferretti,103 F. Fiedler,97 A. Filipčič,89 F. Filthaut,117 K. D. Finelli,25 M. C. N. Fiolhais,137a,137c,v L. Fiorini,171 C. Fischer,14 W. C. Fisher,104 N. Flaschel,44 I. Fleck,148 P. Fleischmann,103 R. R. M. Fletcher,134 T. Flick,179 B. M. Flierl,112 L. M. Flores,134 L. R. Flores Castillo,61a F. M. Follega,73a,73b N. Fomin,17 G. T. Forcolin,98 A. Formica,142 F. A. Förster,14 A. C. Forti,98 A. G. Foster,21 D. Fournier,129 H. Fox,87 S. Fracchia,146 P. Francavilla,69a,69b M. Franchini,23b,23a S. Franchino,59a D. Francis,35 L. Franconi,131 M. Franklin,57 M. Frate,168 M. Fraternali,68a,68b D. Freeborn,92 S. M. Fressard-Batraneanu,35 B. Freund,107 W. S. Freund,78b D. Froidevaux,35 J. A. Frost,132 C. Fukunaga,161 E. Fullana Torregrosa,171 T. Fusayasu,114 J. Fuster,171 O. Gabizon,157 A. Gabrielli,23b,23a A. Gabrielli,18 G. P. Gach,81a S. Gadatsch,52 P. Gadow,113 G. Gagliardi,53b,53a L. G. Gagnon,107 C. Galea,27b B. Galhardo,137a,137c E. J. Gallas,132 B. J. Gallop,141 P. Gallus,139 G. Galster,39 R. Gamboa Goni,90 K. K. Gan,123 S. Ganguly,177 J. Gao,58a Y. Gao,88 Y. S. Gao,150,h C. García,171 J. E. García Navarro,171 J. A. García Pascual,15a M. Garcia-Sciveres,18 R. W. Gardner,36 N. Garelli,150 V. Garonne,131 K. Gasnikova,44 A. Gaudiello,53b,53a G. Gaudio,68a I. L. Gavrilenko,108 A. Gavrilyuk,109 C. Gay,172 G. Gaycken,24 E. N. Gazis,10 C. N. P. Gee,141 J. Geisen,51 M. Geisen,97 M. P. Geisler,59a K. Gellerstedt,43a,43b C. Gemme,53b M. H. Genest,56 C. Geng,103 S. Gentile,70a,70b S. George,91 D. Gerbaudo,14 G. Gessner,45 S. Ghasemi,148 M. Ghasemi Bostanabad,173 M. Ghneimat,24 B. Giacobbe,23b S. Giagu,70a,70b N. Giangiacomi,23b,23a P. Giannetti,69a A. Giannini,67a,67b S. M. Gibson,91 M. Gignac,143 D. Gillberg,33 G. Gilles,179 D. M. Gingrich,3,f M. P. Giordani,64a,64c F. M. Giorgi,23b P. F. Giraud,142 P. Giromini,57 G. Giugliarelli,64a,64c D. Giugni,66a F. Giuli,132 M. Giulini,59b S. Gkaitatzis,159 I. Gkialas,9,w E. L. Gkougkousis,14 P. Gkountoumis,10 L. K. Gladilin,111 C. Glasman,96 J. Glatzer,14 P. C. F. Glaysher,44 A. Glazov,44 M. Goblirsch-Kolb,26 J. Godlewski,82 S. Goldfarb,102 T. Golling,52 D. Golubkov,121 A. Gomes,137a,137b R. Goncalves Gama,78a R. Gonçalo,137a G. Gonella,50 L. Gonella,21 A. Gongadze,77 F. Gonnella,21 J. L. Gonski,57 S. González de la Hoz,171 S. Gonzalez-Sevilla,52 L. Goossens,35 P. A. Gorbounov,109 H. A. Gordon,29 B. Gorini,35 E. Gorini,65a,65b A. Gorišek,89 A. T. Goshaw,47 C. Gössling,45 M. I. Gostkin,77 C. A. Gottardo,24 C. R. Goudet,129 D. Goujdami,34c A. G. Goussiou,145 N. Govender,32b,x C. Goy,5 E. Gozani,157 I. Grabowska-Bold,81a P. O. J. Gradin,169 E. C. Graham,88 J. Gramling,168 E. Gramstad,131 S. Grancagnolo,19 V. Gratchev,135 P. M. Gravila,27f F. G. Gravili,65a,65b C. Gray,55 H. M. Gray,18 Z. D. Greenwood,93,y C. Grefe,24 K. Gregersen,94 I. M. Gregor,44 P. Grenier,150 K. Grevtsov,44 J. Griffiths,8 A. A. Grillo,143 K. Grimm,150,z S. Grinstein,14,aa Ph. Gris,37 J.-F. Grivaz,129 S. Groh,97 E. Gross,177 J. Grosse-Knetter,51 G. C. Grossi,93 Z. J. Grout,92 C. Grud,103 A. Grummer,116 L. Guan,103 W. Guan,178 J. Guenther,35 A. Guerguichon,129 F. Guescini,165a D. Guest,168 R. Gugel,50 B. Gui,123 T. Guillemin,5 S. Guindon,35 U. Gul,55 C. Gumpert,35 J. Guo,58c W. Guo,103 Y. Guo,58a,bb Z. Guo,99 R. Gupta,41 S. Gurbuz,12c G. Gustavino,125 B. J. Gutelman,157 P. Gutierrez,125 C. Gutschow,92 C. Guyot,142 M. P. Guzik,81a C. Gwenlan,132 C. B. Gwilliam,88 A. Haas,122 C. Haber,18 H. K. Hadavand,8 N. Haddad,34e A. Hadef,58a S. Hageböck,24 M. Hagihara,166 H. Hakobyan,181,a M. Haleem,174 J. Haley,126 G. Halladjian,104 G. D. Hallewell,99 K. Hamacher,179 P. Hamal,127 K. Hamano,173 A. Hamilton,32a G. N. Hamity,146 K. Han,58a,cc L. Han,58a S. Han,15d K. Hanagaki,79,dd M. Hance,143 D. M. Handl,112 B. Haney,134 R. Hankache,133 P. Hanke,59a E. Hansen,94 J. B. Hansen,39 J. D. Hansen,39 M. C. Hansen,24 P. H. Hansen,39 E. C. Hanson,98 K. Hara,166 A. S. Hard,178 T. Harenberg,179 S. Harkusha,105 P. F. Harrison,175 N. M. Hartmann,112 Y. Hasegawa,147 A. Hasib,48 S. Hassani,142 S. Haug,20 R. Hauser,104 L. Hauswald,46 L. B. Havener,38 M. Havranek,139 C. M. Hawkes,21 R. J. Hawkings,35 D. Hayden,104 C. Hayes,152 C. P. Hays,132 J. M. Hays,90 H. S. Hayward,88 S. J. Haywood,141 M. P. Heath,48 V. Hedberg,94 L. Heelan,8 S. Heer,24 K. K. Heidegger,50 J. Heilman,33 S. Heim,44 T. Heim,18 B. Heinemann,44,ee J. J. Heinrich,112 L. Heinrich,122 C. Heinz,54 J. Hejbal,138 L. Helary,35 A. Held,172 S. Hellesund,131 S. Hellman,43a,43b C. Helsens,35 R. C. W. Henderson,87 Y. Heng,178 S. Henkelmann,172 A. M. Henriques Correia,35 G. H. Herbert,19 H. Herde,26 V. Herget,174 Y. Hernández Jiménez,32c H. Herr,97 042001-10 PHYSICAL REVIEW LETTERS 123, 042001 (2019) M. G. Herrmann,112 G. Herten,50 R. Hertenberger,112 L. Hervas,35 T. C. Herwig,134 G. G. Hesketh,92 N. P. Hessey,165a J. W. Hetherly,41 S. Higashino,79 E. Higón-Rodriguez,171 K. Hildebrand,36 E. Hill,173 J. C. Hill,31 K. K. Hill,29 K. H. Hiller,44 S. J. Hillier,21 M. Hils,46 I. Hinchliffe,18 M. Hirose,130 D. Hirschbuehl,179 B. Hiti,89 O. Hladik,138 D. R. Hlaluku,32c X. Hoad,48 J. Hobbs,152 N. Hod,165a M. C. Hodgkinson,146 A. Hoecker,35 M. R. Hoeferkamp,116 F. Hoenig,112 D. Hohn,24 D. Hohov,129 T. R. Holmes,36 M. Holzbock,112 M. Homann,45 S. Honda,166 T. Honda,79 T. M. Hong,136 A. Hönle,113 B. H. Hooberman,170 W. H. Hopkins,128 Y. Horii,115 P. Horn,46 A. J. Horton,149 L. A. Horyn,36 J-Y. Hostachy,56 A. Hostiuc,145 S. Hou,155 A. Hoummada,34a J. Howarth,98 J. Hoya,86 M. Hrabovsky,127 J. Hrdinka,35 I. Hristova,19 J. Hrivnac,129 A. Hrynevich,106 T. Hryn’ova,5 P. J. Hsu,62 S.-C. Hsu,145 Q. Hu,29 S. Hu,58c Y. Huang,15a Z. Hubacek,139 F. Hubaut,99 M. Huebner,24 F. Huegging,24 T. B. Huffman,132 E. W. Hughes,38 M. Huhtinen,35 R. F. H. Hunter,33 P. Huo,152 A. M. Hupe,33 N. Huseynov,77,e J. Huston,104 J. Huth,57 R. Hyneman,103 G. Iacobucci,52 G. Iakovidis,29 I. Ibragimov,148 L. Iconomidou-Fayard,129 Z. Idrissi,34e P. Iengo,35 R. Ignazzi,39 O. Igonkina,118,ff R. Iguchi,160 T. Iizawa,52 Y. Ikegami,79 M. Ikeno,79 D. Iliadis,159 N. Ilic,117 F. Iltzsche,46 G. Introzzi,68a,68b M. Iodice,72a K. Iordanidou,38 V. Ippolito,70a,70b M. F. Isacson,169 N. Ishijima,130 M. Ishino,160 M. Ishitsuka,162 W. Islam,126 C. Issever,132 S. Istin,12c,gg F. Ito,166 J. M. Iturbe Ponce,61a R. Iuppa,73a,73b A. Ivina,177 H. Iwasaki,79 J. M. Izen,42 V. Izzo,67a P. Jacka,138 P. Jackson,1 R. M. Jacobs,24 V. Jain,2 G. Jäkel,179 K. B. Jakobi,97 K. Jakobs,50 S. Jakobsen,74 T. Jakoubek,138 D. O. Jamin,126 D. K. Jana,93 R. Jansky,52 J. Janssen,24 M. Janus,51 P. A. Janus,81a G. Jarlskog,94 N. Javadov,77,e T. Javůrek,35 M. Javurkova,50 F. Jeanneau,142 L. Jeanty,18 J. Jejelava,156a,hh A. Jelinskas,175 P. Jenni,50,ii J. Jeong,44 S. Jézéquel,5 H. Ji,178 J. Jia,152 H. Jiang,76 Y. Jiang,58a Z. Jiang,150,jj S. Jiggins,50 F. A. Jimenez Morales,37 J. Jimenez Pena,171 S. Jin,15c A. Jinaru,27b O. Jinnouchi,162 H. Jivan,32c P. Johansson,146 K. A. Johns,7 C. A. Johnson,63 W. J. Johnson,145 K. Jon-And,43a,43b R. W. L. Jones,87 S. D. Jones,153 S. Jones,7 T. J. Jones,88 J. Jongmanns,59a P. M. Jorge,137a,137b J. Jovicevic,165a X. Ju,178 J. J. Junggeburth,113 A. Juste Rozas,14,aa A. Kaczmarska,82 M. Kado,129 H. Kagan,123 M. Kagan,150 T. Kaji,176 E. Kajomovitz,157 C. W. Kalderon,94 A. Kaluza,97 S. Kama,41 A. Kamenshchikov,121 L. Kanjir,89 Y. Kano,160 V. A. Kantserov,110 J. Kanzaki,79 B. Kaplan,122 L. S. Kaplan,178 D. Kar,32c M. J. Kareem,165b E. Karentzos,10 S. N. Karpov,77 Z. M. Karpova,77 V. Kartvelishvili,87 A. N. Karyukhin,121 L. Kashif,178 R. D. Kass,123 A. Kastanas,151 Y. Kataoka,160 C. Kato,58d,58c J. Katzy,44 K. Kawade,80 K. Kawagoe,85 T. Kawamoto,160 G. Kawamura,51 E. F. Kay,88 V. F. Kazanin,120b,120a R. Keeler,173 R. Kehoe,41 J. S. Keller,33 E. Kellermann,94 J. J. Kempster,21 J. Kendrick,21 O. Kepka,138 S. Kersten,179 B. P. Kerševan,89 R. A. Keyes,101 M. Khader,170 F. Khalil-Zada,13 A. Khanov,126 A. G. Kharlamov,120b,120a T. Kharlamova,120b,120a A. Khodinov,163 T. J. Khoo,52 E. Khramov,77 J. Khubua,156b S. Kido,80 M. Kiehn,52 C. R. Kilby,91 Y. K. Kim,36 N. Kimura,64a,64c O. M. Kind,19 B. T. King,88 D. Kirchmeier,46 J. Kirk,141 A. E. Kiryunin,113 T. Kishimoto,160 D. Kisielewska,81a V. Kitali,44 O. Kivernyk,5 E. Kladiva,28b,a T. Klapdor-Kleingrothaus,50 M. H. Klein,103 M. Klein,88 U. Klein,88 K. Kleinknecht,97 P. Klimek,119 A. Klimentov,29 R. Klingenberg,45,a T. Klingl,24 T. Klioutchnikova,35 F. F. Klitzner,112 P. Kluit,118 S. Kluth,113 E. Kneringer,74 E. B. F. G. Knoops,99 A. Knue,50 A. Kobayashi,160 D. Kobayashi,85 T. Kobayashi,160 M. Kobel,46 M. Kocian,150 P. Kodys,140 T. Koffas,33 E. Koffeman,118 N. M. Köhler,113 T. Koi,150 M. Kolb,59b I. Koletsou,5 T. Kondo,79 N. Kondrashova,58c K. Köneke,50 A. C. König,117 T. Kono,79 R. Konoplich,122,kk V. Konstantinides,92 N. Konstantinidis,92 B. Konya,94 R. Kopeliansky,63 S. Koperny,81a K. Korcyl,82 K. Kordas,159 A. Korn,92 I. Korolkov,14 E. V. Korolkova,146 O. Kortner,113 S. Kortner,113 T. Kosek,140 V. V. Kostyukhin,24 A. Kotwal,47 A. Koulouris,10 A. Kourkoumeli-Charalampidi,68a,68b C. Kourkoumelis,9 E. Kourlitis,146 V. Kouskoura,29 A. B. Kowalewska,82 R. Kowalewski,173 T. Z. Kowalski,81a C. Kozakai,160 W. Kozanecki,142 A. S. Kozhin,121 V. A. Kramarenko,111 G. Kramberger,89 D. Krasnopevtsev,58a M. W. Krasny,133 A. Krasznahorkay,35 D. Krauss,113 J. A. Kremer,81a J. Kretzschmar,88 P. Krieger,164 K. Krizka,18 K. Kroeninger,45 H. Kroha,113 J. Kroll,138 J. Kroll,134 J. Krstic,16 U. Kruchonak,77 H. Krüger,24 N. Krumnack,76 M. C. Kruse,47 T. Kubota,102 S. Kuday,4b J. T. Kuechler,179 S. Kuehn,35 A. Kugel,59a F. Kuger,174 T. Kuhl,44 V. Kukhtin,77 R. Kukla,99 Y. Kulchitsky,105 S. Kuleshov,144b Y. P. Kulinich,170 M. Kuna,56 T. Kunigo,83 A. Kupco,138 T. Kupfer,45 O. Kuprash,158 H. Kurashige,80 L. L. Kurchaninov,165a Y. A. Kurochkin,105 M. G. Kurth,15d E. S. Kuwertz,35 M. Kuze,162 J. Kvita,127 T. Kwan,101 A. La Rosa,113 J. L. La Rosa Navarro,78d L. La Rotonda,40b,40a F. La Ruffa,40b,40a C. Lacasta,171 F. Lacava,70a,70b J. Lacey,44 D. P. J. Lack,98 H. Lacker,19 D. Lacour,133 E. Ladygin,77 R. Lafaye,5 B. Laforge,133 T. Lagouri,32c S. Lai,51 S. Lammers,63 W. Lampl,7 E. Lançon,29 U. Landgraf,50 M. P. J. Landon,90 M. C. Lanfermann,52 V. S. Lang,44 J. C. Lange,14 R. J. Langenberg,35 A. J. Lankford,168 F. Lanni,29 K. Lantzsch,24 A. Lanza,68a A. Lapertosa,53b,53a S. Laplace,133 J. F. Laporte,142 T. Lari,66a F. Lasagni Manghi,23b,23a M. Lassnig,35 T. S. Lau,61a A. Laudrain,129 M. Lavorgna,67a,67b A. T. Law,143 P. Laycock,88 042001-11 PHYSICAL REVIEW LETTERS 123, 042001 (2019) M. Lazzaroni,66a,66b B. Le,102 O. Le Dortz,133 E. Le Guirriec,99 E. P. Le Quilleuc,142 M. LeBlanc,7 T. LeCompte,6 F. Ledroit-Guillon,56 C. A. Lee,29 G. R. Lee,144a L. Lee,57 S. C. Lee,155 B. Lefebvre,101 M. Lefebvre,173 F. Legger,112 C. Leggett,18 N. Lehmann,179 G. Lehmann Miotto,35 W. A. Leight,44 A. Leisos,159,ll M. A. L. Leite,78d R. Leitner,140 D. Lellouch,177 B. Lemmer,51 K. J. C. Leney,92 T. Lenz,24 B. Lenzi,35 R. Leone,7 S. Leone,69a C. Leonidopoulos,48 G. Lerner,153 C. Leroy,107 R. Les,164 A. A. J. Lesage,142 C. G. Lester,31 M. Levchenko,135 J. Levêque,5 D. Levin,103 L. J. Levinson,177 D. Lewis,90 B. Li,103 C-Q. Li,58a,mm H. Li,58b L. Li,58c Q. Li,15d Q. Y. Li,58a S. Li,58d,58c X. Li,58c Y. Li,148 Z. Liang,15a B. Liberti,71a A. Liblong,164 K. Lie,61c S. Liem,118 A. Limosani,154 C. Y. Lin,31 K. Lin,104 T. H. Lin,97 R. A. Linck,63 J. H. Lindon,21 B. E. Lindquist,152 A. L. Lionti,52 E. Lipeles,134 A. Lipniacka,17 M. Lisovyi,59b T. M. Liss,170,nn A. Lister,172 A. M. Litke,143 J. D. Little,8 B. Liu,76 B. L Liu,6 H. B. Liu,29 H. Liu,103 J. B. Liu,58a J. K. K. Liu,132 K. Liu,133 M. Liu,58a P. Liu,18 Y. Liu,15a Y. L. Liu,58a Y. W. Liu,58a M. Livan,68a,68b A. Lleres,56 J. Llorente Merino,15a S. L. Lloyd,90 C. Y. Lo,61b F. Lo Sterzo,41 E. M. Lobodzinska,44 P. Loch,7 T. Lohse,19 K. Lohwasser,146 M. Lokajicek,138 B. A. Long,25 J. D. Long,170 R. E. Long,87 L. Longo,65a,65b K. A. Looper,123 J. A. Lopez,144b I. Lopez Paz,14 A. Lopez Solis,146 J. Lorenz,112 N. Lorenzo Martinez,5 M. Losada,22 P. J. Lösel,112 A. Lösle,50 X. Lou,44 X. Lou,15a A. Lounis,129 J. Love,6 P. A. Love,87 J. J. Lozano Bahilo,171 H. Lu,61a M. Lu,58a N. Lu,103 Y. J. Lu,62 H. J. Lubatti,145 C. Luci,70a,70b A. Lucotte,56 C. Luedtke,50 F. Luehring,63 I. Luise,133 L. Luminari,70a B. Lund-Jensen,151 M. S. Lutz,100 P. M. Luzi,133 D. Lynn,29 R. Lysak,138 E. Lytken,94 F. Lyu,15a V. Lyubushkin,77 H. Ma,29 L. L. Ma,58b Y. Ma,58b G. Maccarrone,49 A. Macchiolo,113 C. M. Macdonald,146 J. Machado Miguens,134,137b D. Madaffari,171 R. Madar,37 W. F. Mader,46 A. Madsen,44 N. Madysa,46 J. Maeda,80 K. Maekawa,160 S. Maeland,17 T. Maeno,29 A. S. Maevskiy,111 V. Magerl,50 C. Maidantchik,78b T. Maier,112 A. Maio,137a,137b,137d O. Majersky,28a S. Majewski,128 Y. Makida,79 N. Makovec,129 B. Malaescu,133 Pa. Malecki,82 V. P. Maleev,135 F. Malek,56 U. Mallik,75 D. Malon,6 C. Malone,31 S. Maltezos,10 S. Malyukov,35 J. Mamuzic,171 G. Mancini,49 I. Mandić,89 J. Maneira,137a L. Manhaes de Andrade Filho,78a J. Manjarres Ramos,46 K. H. Mankinen,94 A. Mann,112 A. Manousos,74 B. Mansoulie,142 J. D. Mansour,15a M. Mantoani,51 S. Manzoni,66a,66b G. Marceca,30 L. March,52 L. Marchese,132 G. Marchiori,133 M. Marcisovsky,138 C. A. Marin Tobon,35 M. Marjanovic,37 D. E. Marley,103 F. Marroquim,78b Z. Marshall,18 M. U. F Martensson,169 S. Marti-Garcia,171 C. B. Martin,123 T. A. Martin,175 V. J. Martin,48 B. Martin dit Latour,17 M. Martinez,14,aa V. I. Martinez Outschoorn,100 S. Martin-Haugh,141 V. S. Martoiu,27b A. C. Martyniuk,92 A. Marzin,35 L. Masetti,97 T. Mashimo,160 R. Mashinistov,108 J. Masik,98 A. L. Maslennikov,120b,120a L. H. Mason,102 L. Massa,71a,71b P. Massarotti,67a,67b P. Mastrandrea,5 A. Mastroberardino,40b,40a T. Masubuchi,160 P. Mättig,179 J. Maurer,27b B. Maček,89 S. J. Maxfield,88 D. A. Maximov,120b,120a R. Mazini,155 I. Maznas,159 S. M. Mazza,143 N. C. Mc Fadden,116 G. Mc Goldrick,164 S. P. Mc Kee,103 A. McCarn Deiana,103 T. G. McCarthy,113 L. I. McClymont,92 E. F. McDonald,102 J. A. Mcfayden,35 G. Mchedlidze,51 M. A. McKay,41 K. D. McLean,173 S. J. McMahon,141 P. C. McNamara,102 C. J. McNicol,175 R. A. McPherson,173,p J. E. Mdhluli,32c Z. A. Meadows,100 S. Meehan,145 T. M. Megy,50 S. Mehlhase,112 A. Mehta,88 T. Meideck,56 B. Meirose,42 D. Melini,171,oo B. R. Mellado Garcia,32c J. D. Mellenthin,51 M. Melo,28a F. Meloni,44 A. Melzer,24 S. B. Menary,98 E. D. Mendes Gouveia,137a L. Meng,88 X. T. Meng,103 A. Mengarelli,23b,23a S. Menke,113 E. Meoni,40b,40a S. Mergelmeyer,19 C. Merlassino,20 P. Mermod,52 L. Merola,67a,67b C. Meroni,66a F. S. Merritt,36 A. Messina,70a,70b J. Metcalfe,6 A. S. Mete,168 C. Meyer,134 J. Meyer,157 J-P. Meyer,142 H. Meyer Zu Theenhausen,59a F. Miano,153 R. P. Middleton,141 L. Mijović,48 G. Mikenberg,177 M. Mikestikova,138 M. Mikuž,89 M. Milesi,102 A. Milic,164 D. A. Millar,90 D. W. Miller,36 A. Milov,177 D. A. Milstead,43a,43b A. A. Minaenko,121 M. Miñano Moya,171 I. A. Minashvili,156b A. I. Mincer,122 B. Mindur,81a M. Mineev,77 Y. Minegishi,160 Y. Ming,178 L. M. Mir,14 A. Mirto,65a,65b K. P. Mistry,134 T. Mitani,176 J. Mitrevski,112 V. A. Mitsou,171 A. Miucci,20 P. S. Miyagawa,146 A. Mizukami,79 J. U. Mjörnmark,94 T. Mkrtchyan,181 M. Mlynarikova,140 T. Moa,43a,43b K. Mochizuki,107 P. Mogg,50 S. Mohapatra,38 S. Molander,43a,43b R. Moles-Valls,24 M. C. Mondragon,104 K. Mönig,44 J. Monk,39 E. Monnier,99 A. Montalbano,149 J. Montejo Berlingen,35 F. Monticelli,86 S. Monzani,66a N. Morange,129 D. Moreno,22 M. Moreno Llácer,35 P. Morettini,53b M. Morgenstern,118 S. Morgenstern,46 D. Mori,149 M. Morii,57 M. Morinaga,176 V. Morisbak,131 A. K. Morley,35 G. Mornacchi,35 A. P. Morris,92 J. D. Morris,90 L. Morvaj,152 P. Moschovakos,10 M. Mosidze,156b H. J. Moss,146 J. Moss,150,pp K. Motohashi,162 R. Mount,150 E. Mountricha,35 E. J. W. Moyse,100 S. Muanza,99 F. Mueller,113 J. Mueller,136 R. S. P. Mueller,112 D. Muenstermann,87 G. A. Mullier,20 F. J. Munoz Sanchez,98 P. Murin,28b W. J. Murray,175,141 A. Murrone,66a,66b M. Muškinja,89 C. Mwewa,32a A. G. Myagkov,121,qq J. Myers,128 M. Myska,139 B. P. Nachman,18 O. Nackenhorst,45 K. Nagai,132 K. Nagano,79 Y. Nagasaka,60 M. Nagel,50 E. Nagy,99 042001-12 PHYSICAL REVIEW LETTERS 123, 042001 (2019) A. M. Nairz,35 Y. Nakahama,115 K. Nakamura,79 T. Nakamura,160 I. Nakano,124 H. Nanjo,130 F. Napolitano,59a R. F. Naranjo Garcia,44 R. Narayan,11 D. I. Narrias Villar,59a I. Naryshkin,135 T. Naumann,44 G. Navarro,22 R. Nayyar,7 H. A. Neal,103,a P. Y. Nechaeva,108 T. J. Neep,142 A. Negri,68a,68b M. Negrini,23b S. Nektarijevic,117 C. Nellist,51 M. E. Nelson,132 S. Nemecek,138 P. Nemethy,122 M. Nessi,35,rr M. S. Neubauer,170 M. Neumann,179 P. R. Newman,21 T. Y. Ng,61c Y. S. Ng,19 H. D. N. Nguyen,99 T. Nguyen Manh,107 E. Nibigira,37 R. B. Nickerson,132 R. Nicolaidou,142 J. Nielsen,143 N. Nikiforou,11 V. Nikolaenko,121,qq I. Nikolic-Audit,133 K. Nikolopoulos,21 P. Nilsson,29 Y. Ninomiya,79 A. Nisati,70a N. Nishu,58c R. Nisius,113 I. Nitsche,45 T. Nitta,176 T. Nobe,160 Y. Noguchi,83 M. Nomachi,130 I. Nomidis,133 M. A. Nomura,29 T. Nooney,90 M. Nordberg,35 N. Norjoharuddeen,132 T. Novak,89 O. Novgorodova,46 R. Novotny,139 L. Nozka,127 K. Ntekas,168 E. Nurse,92 F. Nuti,102 F. G. Oakham,33,f H. Oberlack,113 T. Obermann,24 J. Ocariz,133 A. Ochi,80 I. Ochoa,38 J. P. Ochoa-Ricoux,144a K. O’Connor,26 S. Oda,85 S. Odaka,79 S. Oerdek,51 A. Oh,98 S. H. Oh,47 C. C. Ohm,151 H. Oide,53b,53a M. L. Ojeda,164 H. Okawa,166 Y. Okazaki,83 Y. Okumura,160 T. Okuyama,79 A. Olariu,27b L. F. Oleiro Seabra,137a S. A. Olivares Pino,144a D. Oliveira Damazio,29 J. L. Oliver,1 M. J. R. Olsson,36 A. Olszewski,82 J. Olszowska,82 D. C. O’Neil,149 A. Onofre,137a,137e K. Onogi,115 P. U. E. Onyisi,11 H. Oppen,131 M. J. Oreglia,36 Y. Oren,158 D. Orestano,72a,72b N. Orlando,61b A. A. O’Rourke,44 R. S. Orr,164 B. Osculati,53b,53a,a V. O’Shea,55 R. Ospanov,58a G. Otero y Garzon,30 H. Otono,85 M. Ouchrif,34d F. Ould-Saada,131 A. Ouraou,142 Q. Ouyang,15a M. Owen,55 R. E. Owen,21 V. E. Ozcan,12c N. Ozturk,8 J. Pacalt,127 H. A. Pacey,31 K. Pachal,149 A. Pacheco Pages,14 L. Pacheco Rodriguez,142 C. Padilla Aranda,14 S. Pagan Griso,18 M. Paganini,180 G. Palacino,63 S. Palazzo,40b,40a S. Palestini,35 M. Palka,81b D. Pallin,37 I. Panagoulias,10 C. E. Pandini,35 J. G. Panduro Vazquez,91 P. Pani,35 G. Panizzo,64a,64c L. Paolozzi,52 T. D. Papadopoulou,10 K. Papageorgiou,9,w A. Paramonov,6 D. Paredes Hernandez,61b S. R. Paredes Saenz,132 B. Parida,58c A. J. Parker,87 K. A. Parker,44 M. A. Parker,31 F. Parodi,53b,53a J. A. Parsons,38 U. Parzefall,50 V. R. Pascuzzi,164 J. M. P. Pasner,143 E. Pasqualucci,70a S. Passaggio,53b F. Pastore,91 P. Pasuwan,43a,43b S. Pataraia,97 J. R. Pater,98 A. Pathak,178,g T. Pauly,35 B. Pearson,113 M. Pedersen,131 L. Pedraza Diaz,117 R. Pedro,137a,137b S. V. Peleganchuk,120b,120a O. Penc,138 C. Peng,15d H. Peng,58a B. S. Peralva,78a M. M. Perego,142 A. P. Pereira Peixoto,137a D. V. Perepelitsa,29 F. Peri,19 L. Perini,66a,66b H. Pernegger,35 S. Perrella,67a,67b V. D. Peshekhonov,77,a K. Peters,44 R. F. Y. Peters,98 B. A. Petersen,35 T. C. Petersen,39 E. Petit,56 A. Petridis,1 C. Petridou,159 P. Petroff,129 M. Petrov,132 F. Petrucci,72a,72b M. Pettee,180 N. E. Pettersson,100 A. Peyaud,142 R. Pezoa,144b T. Pham,102 F. H. Phillips,104 P. W. Phillips,141 G. Piacquadio,152 E. Pianori,18 A. Picazio,100 M. A. Pickering,132 R. H. Pickles,98 R. Piegaia,30 J. E. Pilcher,36 A. D. Pilkington,98 M. Pinamonti,71a,71b J. L. Pinfold,3 M. Pitt,177 M.-A. Pleier,29 V. Pleskot,140 E. Plotnikova,77 D. Pluth,76 P. Podberezko,120b,120a R. Poettgen,94 R. Poggi,52 L. Poggioli,129 I. Pogrebnyak,104 D. Pohl,24 I. Pokharel,51 G. Polesello,68a A. Poley,44 A. Policicchio,70a,70b R. Polifka,35 A. Polini,23b C. S. Pollard,44 V. Polychronakos,29 D. Ponomarenko,110 L. Pontecorvo,35 G. A. Popeneciu,27d D. M. Portillo Quintero,133 S. Pospisil,139 K. Potamianos,44 I. N. Potrap,77 C. J. Potter,31 H. Potti,11 T. Poulsen,94 J. Poveda,35 T. D. Powell,146 M. E. Pozo Astigarraga,35 P. Pralavorio,99 S. Prell,76 D. Price,98 M. Primavera,65a S. Prince,101 N. Proklova,110 K. Prokofiev,61c F. Prokoshin,144b S. Protopopescu,29 J. Proudfoot,6 M. Przybycien,81a A. Puri,170 P. Puzo,129 J. Qian,103 Y. Qin,98 A. Quadt,51 M. Queitsch-Maitland,44 A. Qureshi,1 P. Rados,102 F. Ragusa,66a,66b G. Rahal,95 J. A. Raine,52 S. Rajagopalan,29 A. Ramirez Morales,90 T. Rashid,129 S. Raspopov,5 M. G. Ratti,66a,66b D. M. Rauch,44 F. Rauscher,112 S. Rave,97 B. Ravina,146 I. Ravinovich,177 J. H. Rawling,98 M. Raymond,35 A. L. Read,131 N. P. Readioff,56 M. Reale,65a,65b D. M. Rebuzzi,68a,68b A. Redelbach,174 G. Redlinger,29 R. Reece,143 R. G. Reed,32c K. Reeves,42 L. Rehnisch,19 J. Reichert,134 A. Reiss,97 C. Rembser,35 H. Ren,15d M. Rescigno,70a S. Resconi,66a E. D. Resseguie,134 S. Rettie,172 E. Reynolds,21 O. L. Rezanova,120b,120a P. Reznicek,140 E. Ricci,73a,73b R. Richter,113 S. Richter,92 E. Richter-Was,81b O. Ricken,24 M. Ridel,133 P. Rieck,113 C. J. Riegel,179 O. Rifki,44 M. Rijssenbeek,152 A. Rimoldi,68a,68b M. Rimoldi,20 L. Rinaldi,23b G. Ripellino,151 B. Ristić,87 E. Ritsch,35 I. Riu,14 J. C. Rivera Vergara,144a F. Rizatdinova,126 E. Rizvi,90 C. Rizzi,14 R. T. Roberts,98 S. H. Robertson,101,p D. Robinson,31 J. E. M. Robinson,44 A. Robson,55 E. Rocco,97 C. Roda,69a,69b Y. Rodina,99 S. Rodriguez Bosca,171 A. Rodriguez Perez,14 D. Rodriguez Rodriguez,171 A. M. Rodríguez Vera,165b S. Roe,35 C. S. Rogan,57 O. Røhne,131 R. Röhrig,113 C. P. A. Roland,63 J. Roloff,57 A. Romaniouk,110 M. Romano,23b,23a N. Rompotis,88 M. Ronzani,122 L. Roos,133 S. Rosati,70a K. Rosbach,50 P. Rose,143 N-A. Rosien,51 E. Rossi,44 E. Rossi,67a,67b L. P. Rossi,53b L. Rossini,66a,66b J. H. N. Rosten,31 R. Rosten,14 M. Rotaru,27b J. Rothberg,145 D. Rousseau,129 D. Roy,32c A. Rozanov,99 Y. Rozen,157 X. Ruan,32c F. Rubbo,150 F. Rühr,50 A. Ruiz-Martinez,171 Z. Rurikova,50 N. A. Rusakovich,77 H. L. Russell,101 J. P. Rutherfoord,7 E. M. Rüttinger,44,ss Y. F. Ryabov,135 M. Rybar,170 G. Rybkin,129 S. Ryu,6 A. Ryzhov,121 G. F. Rzehorz,51 P. Sabatini,51 G. Sabato,118 042001-13 PHYSICAL REVIEW LETTERS 123, 042001 (2019) S. Sacerdoti,129 H. F-W. Sadrozinski,143 R. Sadykov,77 F. Safai Tehrani,70a P. Saha,119 M. Sahinsoy,59a A. Sahu,179 M. Saimpert,44 M. Saito,160 T. Saito,160 H. Sakamoto,160 A. Sakharov,122,kk D. Salamani,52 G. Salamanna,72a,72b J. E. Salazar Loyola,144b D. Salek,118 P. H. Sales De Bruin,169 D. Salihagic,113,a A. Salnikov,150 J. Salt,171 D. Salvatore,40b,40a F. Salvatore,153 A. Salvucci,61a,61b,61c A. Salzburger,35 J. Samarati,35 D. Sammel,50 D. Sampsonidis,159 D. Sampsonidou,159 J. Sánchez,171 A. Sanchez Pineda,64a,64c H. Sandaker,131 C. O. Sander,44 M. Sandhoff,179 C. Sandoval,22 D. P. C. Sankey,141 M. Sannino,53b,53a Y. Sano,115 A. Sansoni,49 C. Santoni,37 H. Santos,137a I. Santoyo Castillo,153 A. Santra,171 A. Sapronov,77 J. G. Saraiva,137a,137d O. Sasaki,79 K. Sato,166 E. Sauvan,5 P. Savard,164,f N. Savic,113 R. Sawada,160 C. Sawyer,141 L. Sawyer,93,y C. Sbarra,23b A. Sbrizzi,23a T. Scanlon,92 J. Schaarschmidt,145 P. Schacht,113 B. M. Schachtner,112 D. Schaefer,36 L. Schaefer,134 J. Schaeffer,97 S. Schaepe,35 U. Schäfer,97 A. C. Schaffer,129 D. Schaile,112 R. D. Schamberger,152 N. Scharmberg,98 V. A. Schegelsky,135 D. Scheirich,140 F. Schenck,19 M. Schernau,168 C. Schiavi,53b,53a S. Schier,143 L. K. Schildgen,24 Z. M. Schillaci,26 E. J. Schioppa,35 M. Schioppa,40b,40a K. E. Schleicher,50 S. Schlenker,35 K. R. Schmidt-Sommerfeld,113 K. Schmieden,35 C. Schmitt,97 S. Schmitt,44 S. Schmitz,97 J. C. Schmoeckel,44 U. Schnoor,50 L. Schoeffel,142 A. Schoening,59b E. Schopf,24 M. Schott,97 J. F. P. Schouwenberg,117 J. Schovancova,35 S. Schramm,52 A. Schulte,97 H-C. Schultz-Coulon,59a M. Schumacher,50 B. A. Schumm,143 Ph. Schune,142 A. Schwartzman,150 T. A. Schwarz,103 H. Schweiger,98 Ph. Schwemling,142 R. Schwienhorst,104 A. Sciandra,24 G. Sciolla,26 M. Scornajenghi,40b,40a F. Scuri,69a F. Scutti,102 L. M. Scyboz,113 J. Searcy,103 C. D. Sebastiani,70a,70b P. Seema,24 S. C. Seidel,116 A. Seiden,143 T. Seiss,36 J. M. Seixas,78b G. Sekhniaidze,67a K. Sekhon,103 S. J. Sekula,41 N. Semprini-Cesari,23b,23a S. Sen,47 S. Senkin,37 C. Serfon,131 L. Serin,129 L. Serkin,64a,64b M. Sessa,72a,72b H. Severini,125 F. Sforza,167 A. Sfyrla,52 E. Shabalina,51 J. D. Shahinian,143 N. W. Shaikh,43a,43b L. Y. Shan,15a R. Shang,170 J. T. Shank,25 M. Shapiro,18 A. S. Sharma,1 A. Sharma,132 P. B. Shatalov,109 K. Shaw,153 S. M. Shaw,98 A. Shcherbakova,135 Y. Shen,125 N. Sherafati,33 A. D. Sherman,25 P. Sherwood,92 L. Shi,155,tt S. Shimizu,79 C. O. Shimmin,180 M. Shimojima,114 I. P. J. Shipsey,132 S. Shirabe,85 M. Shiyakova,77 J. Shlomi,177 A. Shmeleva,108 D. Shoaleh Saadi,107 M. J. Shochet,36 S. Shojaii,102 D. R. Shope,125 S. Shrestha,123 E. Shulga,110 P. Sicho,138 A. M. Sickles,170 P. E. Sidebo,151 E. Sideras Haddad,32c O. Sidiropoulou,35 A. Sidoti,23b,23a F. Siegert,46 Dj. Sijacki,16 J. Silva,137a M. Silva Jr.,178 M. V. Silva Oliveira,78a S. B. Silverstein,43a L. Simic,77 S. Simion,129 E. Simioni,97 M. Simon,97 R. Simoniello,97 P. Sinervo,164 N. B. Sinev,128 M. Sioli,23b,23a G. Siragusa,174 I. Siral,103 S. Yu. Sivoklokov,111 J. Sjölin,43a,43b P. Skubic,125 M. Slater,21 T. Slavicek,139 M. Slawinska,82 K. Sliwa,167 R. Slovak,140 V. Smakhtin,177 B. H. Smart,5 J. Smiesko,28a N. Smirnov,110 S. Yu. Smirnov,110 Y. Smirnov,110 L. N. Smirnova,111 O. Smirnova,94 J. W. Smith,51 M. N. K. Smith,38 M. Smizanska,87 K. Smolek,139 A. Smykiewicz,82 A. A. Snesarev,108 I. M. Snyder,128 S. Snyder,29 R. Sobie,173,p A. M. Soffa,168 A. Soffer,158 A. Søgaard,48 D. A. Soh,155 G. Sokhrannyi,89 C. A. Solans Sanchez,35 M. Solar,139 E. Yu. Soldatov,110 U. Soldevila,171 A. A. Solodkov,121 A. Soloshenko,77 O. V. Solovyanov,121 V. Solovyev,135 P. Sommer,146 H. Son,167 W. Song,141 W. Y. Song,165b A. Sopczak,139 F. Sopkova,28b D. Sosa,59b C. L. Sotiropoulou,69a,69b S. Sottocornola,68a,68b R. Soualah,64a,64c,uu A. M. Soukharev,120b,120a D. South,44 B. C. Sowden,91 S. Spagnolo,65a,65b M. Spalla,113 M. Spangenberg,175 F. Spanò,91 D. Sperlich,19 F. Spettel,113 T. M. Spieker,59a R. Spighi,23b G. Spigo,35 L. A. Spiller,102 D. P. Spiteri,55 M. Spousta,140 A. Stabile,66a,66b R. Stamen,59a S. Stamm,19 E. Stanecka,82 R. W. Stanek,6 C. Stanescu,72a B. Stanislaus,132 M. M. Stanitzki,44 B. Stapf,118 S. Stapnes,131 E. A. Starchenko,121 G. H. Stark,36 J. Stark,56 S. H Stark,39 P. Staroba,138 P. Starovoitov,59a S. Stärz,35 R. Staszewski,82 M. Stegler,44 P. Steinberg,29 B. Stelzer,149 H. J. Stelzer,35 O. Stelzer-Chilton,165a H. Stenzel,54 T. J. Stevenson,90 G. A. Stewart,35 M. C. Stockton,128 G. Stoicea,27b P. Stolte,51 S. Stonjek,113 A. Straessner,46 J. Strandberg,151 S. Strandberg,43a,43b M. Strauss,125 P. Strizenec,28b R. Ströhmer,174 D. M. Strom,128 R. Stroynowski,41 A. Strubig,48 S. A. Stucci,29 B. Stugu,17 J. Stupak,125 N. A. Styles,44 D. Su,150 J. Su,136 S. Suchek,59a Y. Sugaya,130 M. Suk,139 V. V. Sulin,108 D. M. S. Sultan,52 S. Sultansoy,4c T. Sumida,83 S. Sun,103 X. Sun,3 K. Suruliz,153 C. J. E. Suster,154 M. R. Sutton,153 S. Suzuki,79 M. Svatos,138 M. Swiatlowski,36 S. P. Swift,2 A. Sydorenko,97 I. Sykora,28a T. Sykora,140 D. Ta,97 K. Tackmann,44,vv J. Taenzer,158 A. Taffard,168 R. Tafirout,165a E. Tahirovic,90 N. Taiblum,158 H. Takai,29 R. Takashima,84 E. H. Takasugi,113 K. Takeda,80 T. Takeshita,147 Y. Takubo,79 M. Talby,99 A. A. Talyshev,120b,120a J. Tanaka,160 M. Tanaka,162 R. Tanaka,129 B. B. Tannenwald,123 S. Tapia Araya,144b S. Tapprogge,97 A. Tarek Abouelfadl Mohamed,133 S. Tarem,157 G. Tarna,27b,t G. F. Tartarelli,66a P. Tas,140 M. Tasevsky,138 T. Tashiro,83 E. Tassi,40b,40a A. Tavares Delgado,137a,137b Y. Tayalati,34e A. C. Taylor,116 A. J. Taylor,48 G. N. Taylor,102 P. T. E. Taylor,102 W. Taylor,165b A. S. Tee,87 P. Teixeira-Dias,91 H. Ten Kate,35 P. K. Teng,155 J. J. Teoh,118 F. Tepel,179 S. Terada,79 K. Terashi,160 J. Terron,96 S. Terzo,14 M. Testa,49 R. J. Teuscher,164,p S. J. Thais,180 T. Theveneaux-Pelzer,44 F. Thiele,39 042001-14 PHYSICAL REVIEW LETTERS 123, 042001 (2019) D. W. Thomas,91 J. P. Thomas,21 A. S. Thompson,55 P. D. Thompson,21 L. A. Thomsen,180 E. Thomson,134 Y. Tian,38 R. E. Ticse Torres,51 V. O. Tikhomirov,108,ww Yu. A. Tikhonov,120b,120a S. Timoshenko,110 P. Tipton,180 S. Tisserant,99 K. Todome,162 S. Todorova-Nova,5 S. Todt,46 J. Tojo,85 S. Tokár,28a K. Tokushuku,79 E. Tolley,123 K. G. Tomiwa,32c M. Tomoto,115 L. Tompkins,150,jj K. Toms,116 B. Tong,57 P. Tornambe,50 E. Torrence,128 H. Torres,46 E. Torró Pastor,145 C. Tosciri,132 J. Toth,99,xx F. Touchard,99 D. R. Tovey,146 C. J. Treado,122 T. Trefzger,174 F. Tresoldi,153 A. Tricoli,29 I. M. Trigger,165a S. Trincaz-Duvoid,133 M. F. Tripiana,14 W. Trischuk,164 B. Trocmé,56 A. Trofymov,129 C. Troncon,66a M. Trovatelli,173 F. Trovato,153 L. Truong,32b M. Trzebinski,82 A. Trzupek,82 F. Tsai,44 J. C-L. Tseng,132 P. V. Tsiareshka,105 A. Tsirigotis,159 N. Tsirintanis,9 V. Tsiskaridze,152 E. G. Tskhadadze,156a I. I. Tsukerman,109 V. Tsulaia,18 S. Tsuno,79 D. Tsybychev,152 Y. Tu,61b A. Tudorache,27b V. Tudorache,27b T. T. Tulbure,27a A. N. Tuna,57 S. Turchikhin,77 D. Turgeman,177 I. Turk Cakir,4b,yy R. T. Turra,66a P. M. Tuts,38 E. Tzovara,97 G. Ucchielli,23b,23a I. Ueda,79 M. Ughetto,43a,43b F. Ukegawa,166 G. Unal,35 A. Undrus,29 G. Unel,168 F. C. Ungaro,102 Y. Unno,79 K. Uno,160 J. Urban,28b P. Urquijo,102 P. Urrejola,97 G. Usai,8 J. Usui,79 L. Vacavant,99 V. Vacek,139 B. Vachon,101 K. O. H. Vadla,131 A. Vaidya,92 C. Valderanis,112 E. Valdes Santurio,43a,43b M. Valente,52 S. Valentinetti,23b,23a A. Valero,171 L. Valéry,44 R. A. Vallance,21 A. Vallier,5 J. A. Valls Ferrer,171 T. R. Van Daalen,14 W. Van Den Wollenberg,118 H. Van der Graaf,118 P. Van Gemmeren,6 J. Van Nieuwkoop,149 I. Van Vulpen,118 M. Vanadia,71a,71b W. Vandelli,35 A. Vaniachine,163 P. Vankov,118 R. Vari,70a E. W. Varnes,7 C. Varni,53b,53a T. Varol,41 D. Varouchas,129 K. E. Varvell,154 G. A. Vasquez,144b J. G. Vasquez,180 F. Vazeille,37 D. Vazquez Furelos,14 T. Vazquez Schroeder,101 J. Veatch,51 V. Vecchio,72a,72b L. M. Veloce,164 F. Veloso,137a,137c S. Veneziano,70a A. Ventura,65a,65b M. Venturi,173 N. Venturi,35 V. Vercesi,68a M. Verducci,72a,72b C. M. Vergel Infante,76 W. Verkerke,118 A. T. Vermeulen,118 J. C. Vermeulen,118 M. C. Vetterli,149,f N. Viaux Maira,144b M. Vicente Barreto Pinto,52 I. Vichou,170,a T. Vickey,146 O. E. Vickey Boeriu,146 G. H. A. Viehhauser,132 S. Viel,18 L. Vigani,132 M. Villa,23b,23a M. Villaplana Perez,66a,66b E. Vilucchi,49 M. G. Vincter,33 V. B. Vinogradov,77 A. Vishwakarma,44 C. Vittori,23b,23a I. Vivarelli,153 S. Vlachos,10 M. Vogel,179 P. Vokac,139 G. Volpi,14 S. E. von Buddenbrock,32c E. Von Toerne,24 V. Vorobel,140 K. Vorobev,110 M. Vos,171 J. H. Vossebeld,88 N. Vranjes,16 M. Vranjes Milosavljevic,16 V. Vrba,139 M. Vreeswijk,118 T. Šfiligoj,89 R. Vuillermet,35 I. Vukotic,36 T. Ženiš,28a L. Živković,16 P. Wagner,24 W. Wagner,179 J. Wagner-Kuhr,112 H. Wahlberg,86 S. Wahrmund,46 K. Wakamiya,80 V. M. Walbrecht,113 J. Walder,87 R. Walker,112 S. D. Walker,91 W. Walkowiak,148 V. Wallangen,43a,43b A. M. Wang,57 C. Wang,58b,t F. Wang,178 H. Wang,18 H. Wang,3 J. Wang,154 J. Wang,59b P. Wang,41 Q. Wang,125 R.-J. Wang,133 R. Wang,58a R. Wang,6 S. M. Wang,155 W. T. Wang,58a W. Wang,15c,zz W. X. Wang,58a,zz Y. Wang,58a,mm Z. Wang,58c C. Wanotayaroj,44 A. Warburton,101 C. P. Ward,31 D. R. Wardrope,92 A. Washbrook,48 P. M. Watkins,21 A. T. Watson,21 M. F. Watson,21 G. Watts,145 S. Watts,98 B. M. Waugh,92 A. F. Webb,11 S. Webb,97 C. Weber,180 M. S. Weber,20 S. A. Weber,33 S. M. Weber,59a A. R. Weidberg,132 B. Weinert,63 J. Weingarten,45 M. Weirich,97 C. Weiser,50 P. S. Wells,35 T. Wenaus,29 T. Wengler,35 S. Wenig,35 N. Wermes,24 M. D. Werner,76 P. Werner,35 M. Wessels,59a T. D. Weston,20 K. Whalen,128 N. L. Whallon,145 A. M. Wharton,87 A. S. White,103 A. White,8 M. J. White,1 R. White,144b D. Whiteson,168 B. W. Whitmore,87 F. J. Wickens,141 W. Wiedenmann,178 M. Wielers,141 C. Wiglesworth,39 L. A. M. Wiik-Fuchs,50 A. Wildauer,113 F. Wilk,98 H. G. Wilkens,35 L. J. Wilkins,91 H. H. Williams,134 S. Williams,31 C. Willis,104 S. Willocq,100 J. A. Wilson,21 I. Wingerter-Seez,5 E. Winkels,153 F. Winklmeier,128 O. J. Winston,153 B. T. Winter,24 M. Wittgen,150 M. Wobisch,93 A. Wolf,97 T. M. H. Wolf,118 R. Wolff,99 M. W. Wolter,82 H. Wolters,137a,137c V. W. S. Wong,172 N. L. Woods,143 S. D. Worm,21 B. K. Wosiek,82 K. W. Woźniak,82 K. Wraight,55 M. Wu,36 S. L. Wu,178 X. Wu,52 Y. Wu,58a T. R. Wyatt,98 B. M. Wynne,48 S. Xella,39 Z. Xi,103 L. Xia,175 D. Xu,15a H. Xu,58a,t L. Xu,29 T. Xu,142 W. Xu,103 B. Yabsley,154 S. Yacoob,32a K. Yajima,130 D. P. Yallup,92 D. Yamaguchi,162 Y. Yamaguchi,162 A. Yamamoto,79 T. Yamanaka,160 F. Yamane,80 M. Yamatani,160 T. Yamazaki,160 Y. Yamazaki,80 Z. Yan,25 H. J. Yang,58c,58d H. T. Yang,18 S. Yang,75 Y. Yang,160 Z. Yang,17 W-M. Yao,18 Y. C. Yap,44 Y. Yasu,79 E. Yatsenko,58c,58d J. Ye,41 S. Ye,29 I. Yeletskikh,77 E. Yigitbasi,25 E. Yildirim,97 K. Yorita,176 K. Yoshihara,134 C. J. S. Young,35 C. Young,150 J. Yu,8 J. Yu,76 X. Yue,59a S. P. Y. Yuen,24 B. Zabinski,82 G. Zacharis,10 E. Zaffaroni,52 R. Zaidan,14 A. M. Zaitsev,121,qq T. Zakareishvili,156b N. Zakharchuk,44 J. Zalieckas,17 S. Zambito,57 D. Zanzi,35 D. R. Zaripovas,55 S. V. Zeißner,45 C. Zeitnitz,179 G. Zemaityte,132 J. C. Zeng,170 Q. Zeng,150 O. Zenin,121 D. Zerwas,129 M. Zgubič,132 D. F. Zhang,58b D. Zhang,103 F. Zhang,178 G. Zhang,58a H. Zhang,15c J. Zhang,6 L. Zhang,15c L. Zhang,58a M. Zhang,170 P. Zhang,15c R. Zhang,58a R. Zhang,24 X. Zhang,58b Y. Zhang,15d Z. Zhang,129 P. Zhao,47 X. Zhao,41 Y. Zhao,58b,129,cc Z. Zhao,58a A. Zhemchugov,77 B. Zhou,103 C. Zhou,178 L. Zhou,41 M. S. Zhou,15d M. Zhou,152 N. Zhou,58c Y. Zhou,7 C. G. Zhu,58b H. L. Zhu,58a H. Zhu,15a J. Zhu,103 Y. Zhu,58a X. Zhuang,15a 042001-15 PHYSICAL REVIEW LETTERS 123, 042001 (2019) K. Zhukov,108 V. Zhulanov,120b,120a A. Zibell,174 D. Zieminska,63 N. I. Zimine,77 S. Zimmermann,50 Z. Zinonos,113 M. Zinser,97 M. Ziolkowski,148 G. Zobernig,178 A. Zoccoli,23b,23a K. Zoch,51 T. G. Zorbas,146 R. Zou,36 M. Zur Nedden,19 and L. Zwalinski35 (ATLAS Collaboration) 1 Department of Physics, University of Adelaide, Adelaide, Australia 2 Physics Department, SUNY Albany, Albany, New York, USA 3 Department of Physics, University of Alberta, Edmonton, Alberta, Canada 4a Department of Physics, Ankara University, Ankara, Turkey 4b Istanbul Aydin University, Istanbul, Turkey 4c Division of Physics, TOBB University of Economics and Technology, Ankara, Turkey 5 LAPP, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, France 6 High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois, USA 7 Department of Physics, University of Arizona, Tucson, Arizona, USA 8 Department of Physics, University of Texas at Arlington, Arlington, Texas, USA 9 Physics Department, National and Kapodistrian University of Athens, Athens, Greece 10 Physics Department, National Technical University of Athens, Zografou, Greece 11 Department of Physics, University of Texas at Austin, Austin, Texas, USA 12a Bahcesehir University, Faculty of Engineering and Natural Sciences, Istanbul, Turkey 12b Istanbul Bilgi University, Faculty of Engineering and Natural Sciences, Istanbul, Turkey 12c Department of Physics, Bogazici University, Istanbul, Turkey 12d Department of Physics Engineering, Gaziantep University, Gaziantep, Turkey 13 Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan 14 Institut de Física d’Altes Energies (IFAE), Barcelona Institute of Science and Technology, Barcelona, Spain 15a Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China 15b Physics Department, Tsinghua University, Beijing, China 15c Department of Physics, Nanjing University, Nanjing, China 15d University of Chinese Academy of Science (UCAS), Beijing, China 16 Institute of Physics, University of Belgrade, Belgrade, Serbia 17 Department for Physics and Technology, University of Bergen, Bergen, Norway 18 Physics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley, California, USA 19 Institut für Physik, Humboldt Universität zu Berlin, Berlin, Germany 20 Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland 21 School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom 22 Facultad de Ciencias y Centro de Investigaciónes, Universidad Antonio Nariño, Bogota, Colombia 23a INFN Bologna and Universita’ di Bologna, Dipartimento di Fisica, Italy 23b INFN Sezione di Bologna, Italy 24 Physikalisches Institut, Universität Bonn, Bonn, Germany 25 Department of Physics, Boston University, Boston, Massachusetts, USA 26 Department of Physics, Brandeis University, Waltham, Massachusetts, USA 27a Transilvania University of Brasov, Brasov, Romania 27b Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania 27c Department of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, Romania 27d National Institute for Research and Development of Isotopic and Molecular Technologies, Physics Department, Cluj-Napoca, Romania 27e University Politehnica Bucharest, Bucharest, Romania 27f West University in Timisoara, Timisoara, Romania 28a Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovak Republic 28b Department of Subnuclear Physics, Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovak Republic 29 Physics Department, Brookhaven National Laboratory, Upton, New York, USA 30 Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina 31 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom 32a Department of Physics, University of Cape Town, Cape Town, South Africa 32b Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa 32c School of Physics, University of the Witwatersrand, Johannesburg, South Africa 33 Department of Physics, Carleton University, Ottawa, Ontario, Canada 042001-16 PHYSICAL REVIEW LETTERS 123, 042001 (2019) 34a Faculté des Sciences Ain Chock, Réseau Universitaire de Physique des Hautes Energies—Université Hassan II, Casablanca, Morocco 34b Centre National de l’Energie des Sciences Techniques Nucleaires (CNESTEN), Rabat, Morocco 34c Faculté des Sciences Semlalia, Université Cadi Ayyad, LPHEA-Marrakech, Morocco 34d Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda, Morocco 34e Faculté des sciences, Université Mohammed V, Rabat, Morocco 35 CERN, Geneva, Switzerland 36 Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA 37 LPC, Université Clermont Auvergne, CNRS/IN2P3, Clermont-Ferrand, France 38 Nevis Laboratory, Columbia University, Irvington, New York, USA 39 Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark 40a Dipartimento di Fisica, Università della Calabria, Rende, Italy 40b INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, Italy 41 Physics Department, Southern Methodist University, Dallas, Texas, USA 42 Physics Department, University of Texas at Dallas, Richardson, Texas, USA 43a Department of Physics, Stockholm University, Sweden 43b Oskar Klein Centre, Stockholm, Sweden 44 Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany 45 Lehrstuhl für Experimentelle Physik IV, Technische Universität Dortmund, Dortmund, Germany 46 Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany 47 Department of Physics, Duke University, Durham, North Carolina, USA 48 SUPA—School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom 49 INFN e Laboratori Nazionali di Frascati, Frascati, Italy 50 Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany 51 II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany 52 Département de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, Switzerland 53a Dipartimento di Fisica, Università di Genova, Genova, Italy 53b INFN Sezione di Genova, Italy 54 II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen, Germany 55 SUPA—School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom 56 LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble INP, Grenoble, France 57 Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts, USA 58a Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, China 58b Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao, China 58c School of Physics and Astronomy, Shanghai Jiao Tong University, KLPPAC-MoE, SKLPPC, Shanghai, China 58d Tsung-Dao Lee Institute, Shanghai, China 59a Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany 59b Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany 60 Faculty of Applied Information Science, Hiroshima Institute of Technology, Hiroshima, Japan 61a Department of Physics, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China 61b Department of Physics, University of Hong Kong, Hong Kong, China 61c Department of Physics and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China 62 Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 63 Department of Physics, Indiana University, Bloomington, Indiana, USA 64a INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy 64b ICTP, Trieste, Italy 64c Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Udine, Italy 65a INFN Sezione di Lecce, Italy 65b Dipartimento di Matematica e Fisica, Università del Salento, Lecce, Italy 66a INFN Sezione di Milano, Italy 66b Dipartimento di Fisica, Università di Milano, Milano, Italy 67a INFN Sezione di Napoli, Italy 67b Dipartimento di Fisica, Università di Napoli, Napoli, Italy 68a INFN Sezione di Pavia, Italy 68b Dipartimento di Fisica, Università di Pavia, Pavia, Italy 69a INFN Sezione di Pisa, Italy 69b Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy 042001-17 PHYSICAL REVIEW LETTERS 123, 042001 (2019) 70a INFN Sezione di Roma, Italy 70b Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy 71a INFN Sezione di Roma Tor Vergata, Italy 71b Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy 72a INFN Sezione di Roma Tre, Italy 72b Dipartimento di Matematica e Fisica, Università Roma Tre, Roma, Italy 73a INFN-TIFPA, Italy 73b Università degli Studi di Trento, Trento, Italy 74 Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität, Innsbruck, Austria 75 University of Iowa, Iowa City, Iowa, USA 76 Department of Physics and Astronomy, Iowa State University, Ames, Iowa, USA 77 Joint Institute for Nuclear Research, Dubna, Russia 78a Departamento de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, Brazil 78b Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil 78c Universidade Federal de São João del Rei (UFSJ), São João del Rei, Brazil 78d Instituto de Física, Universidade de São Paulo, São Paulo, Brazil 79 KEK, High Energy Accelerator Research Organization, Tsukuba, Japan 80 Graduate School of Science, Kobe University, Kobe, Japan 81a AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow, Poland 81b Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland 82 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland 83 Faculty of Science, Kyoto University, Kyoto, Japan 84 Kyoto University of Education, Kyoto, Japan 85 Research Center for Advanced Particle Physics and Department of Physics, Kyushu University, Fukuoka, Japan 86 Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina 87 Physics Department, Lancaster University, Lancaster, United Kingdom 88 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom 89 Department of Experimental Particle Physics, Jožef Stefan Institute and Department of Physics, University of Ljubljana, Ljubljana, Slovenia 90 School of Physics and Astronomy, Queen Mary University of London, London, United Kingdom 91 Department of Physics, Royal Holloway University of London, Egham, United Kingdom 92 Department of Physics and Astronomy, University College London, London, United Kingdom 93 Louisiana Tech University, Ruston, Louisiana, USA 94 Fysiska institutionen, Lunds universitet, Lund, Sweden 95 Centre de Calcul de l’Institut National de Physique Nucléaire et de Physique des Particules (IN2P3), Villeurbanne, France 96 Departamento de Física Teorica C-15 and CIAFF, Universidad Autónoma de Madrid, Madrid, Spain 97 Institut für Physik, Universität Mainz, Mainz, Germany 98 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom 99 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France 100 Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA 101 Department of Physics, McGill University, Montreal, Quebec, Canada 102 School of Physics, University of Melbourne, Victoria, Australia 103 Department of Physics, University of Michigan, Ann Arbor, Michigan, USA 104 Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, USA 105 B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus 106 Research Institute for Nuclear Problems of Byelorussian State University, Minsk, Belarus 107 Group of Particle Physics, University of Montreal, Montreal, Quebec, Canada 108 P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia 109 Institute for Theoretical and Experimental Physics of the National Research Centre Kurchatov Institute, Moscow, Russia 110 National Research Nuclear University MEPhI, Moscow, Russia 111 D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow, Russia 112 Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany 113 Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany 114 Nagasaki Institute of Applied Science, Nagasaki, Japan 115 Graduate School of Science and Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan 116 Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico, USA 117 Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen, Netherlands 118 Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, Netherlands 119 Department of Physics, Northern Illinois University, DeKalb, Illinois, USA 120a Budker Institute of Nuclear Physics and NSU, SB RAS, Novosibirsk, Russia 042001-18 PHYSICAL REVIEW LETTERS 123, 042001 (2019) 120b Novosibirsk State University Novosibirsk, Russia 121 Institute for High Energy Physics of the National Research Centre Kurchatov Institute, Protvino, Russia 122 Department of Physics, New York University, New York, New York, USA 123 The Ohio State University, Columbus, Ohio, USA 124 Faculty of Science, Okayama University, Okayama, Japan 125 Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USA 126 Department of Physics, Oklahoma State University, Stillwater, Oklahoma, USA 127 Palacký University, RCPTM, Joint Laboratory of Optics, Olomouc, Czech Republic 128 Center for High Energy Physics, University of Oregon, Eugene, Oregon, USA 129 LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France 130 Graduate School of Science, Osaka University, Osaka, Japan 131 Department of Physics, University of Oslo, Oslo, Norway 132 Department of Physics, Oxford University, Oxford, United Kingdom 133 LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France 134 Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania, USA 135 Konstantinov Nuclear Physics Institute of National Research Centre “Kurchatov Institute”, PNPI, St. Petersburg, Russia 136 Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA 137a Laboratório de Instrumentação e Física Experimental de Partículas—LIP, Portugal 137b Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal 137c Departamento de Física, Universidade de Coimbra, Coimbra, Portugal 137d Centro de Física Nuclear da Universidade de Lisboa, Lisboa, Portugal 137e Departamento de Física, Universidade do Minho, Braga, Portugal 137f Universidad de Granada, Granada (Spain), Spain 137g Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal 138 Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic 139 Czech Technical University in Prague, Prague, Czech Republic 140 Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic 141 Particle Physics Department, Rutherford Appleton Laboratory, Didcot, United Kingdom 142 IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France 143 Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, California, USA 144a Departamento de Física, Pontificia Universidad Católica de Chile, Santiago, Chile 144b Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso, Chile 145 Department of Physics, University of Washington, Seattle, Washington, USA 146 Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom 147 Department of Physics, Shinshu University, Nagano, Japan 148 Department Physik, Universität Siegen, Siegen, Germany 149 Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada 150 SLAC National Accelerator Laboratory, Stanford, California, USA 151 Physics Department, Royal Institute of Technology, Stockholm, Sweden 152 Departments of Physics and Astronomy, Stony Brook University, Stony Brook, New York, USA 153 Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom 154 School of Physics, University of Sydney, Sydney, Australia 155 Institute of Physics, Academia Sinica, Taipei, Taiwan 156a E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia 156b High Energy Physics Institute, Tbilisi State University, Tbilisi, Georgia 157 Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel 158 Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel 159 Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece 160 International Center for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan 161 Graduate School of Science and Technology, Tokyo Metropolitan University, Tokyo, Japan 162 Department of Physics, Tokyo Institute of Technology, Tokyo, Japan 163 Tomsk State University, Tomsk, Russia 164 Department of Physics, University of Toronto, Toronto, Ontario, Canada 165a TRIUMF, Vancouver, British Columbia, Canada 165b Department of Physics and Astronomy, York University, Toronto, Ontario, Canada 166 Division of Physics and Tomonaga Center for the History of the Universe, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan 167 Department of Physics and Astronomy, Tufts University, Medford, Massachusetts, USA 168 Department of Physics and Astronomy, University of California Irvine, Irvine, California, USA 169 Department of Physics and Astronomy, University of Uppsala, Uppsala, Sweden 042001-19 PHYSICAL REVIEW LETTERS 123, 042001 (2019) 170 Department of Physics, University of Illinois, Urbana, Illinois, USA 171 Instituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia—CSIC, Valencia, Spain 172 Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada 173 Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, Canada 174 Fakultät für Physik und Astronomie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany 175 Department of Physics, University of Warwick, Coventry, United Kingdom 176 Waseda University, Tokyo, Japan 177 Department of Particle Physics, Weizmann Institute of Science, Rehovot, Israel 178 Department of Physics, University of Wisconsin, Madison, Wisconsin, USA 179 Fakultät für Mathematik und Naturwissenschaften, Fachgruppe Physik, Bergische Universität Wuppertal, Wuppertal, Germany 180 Department of Physics, Yale University, New Haven, Connecticut, USA 181 Yerevan Physics Institute, Yerevan, Armenia a Deceased. b Also at Department of Physics, King’s College London, London, United Kingdom. c Also at Istanbul University, Department of Physics, Istanbul, Turkey. d Also at Instituto de Física Teórica de la Universidad Autónoma de Madrid, Spain. e Also at Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan. f Also at TRIUMF, Vancouver, British Columbia, Canada. g Also at Department of Physics and Astronomy, University of Louisville, Louisville, Kentucky, USA. h Also at Department of Physics, California State University, Fresno, California, USA. i Also at Department of Physics, University of Fribourg, Fribourg, Switzerland. j Also at Physics Department, University of South Africa, Pretoria, South Africa. k Also at Departament de Fisica de la Universitat Autonoma de Barcelona, Barcelona, Spain. l Also at Tomsk State University, Tomsk, and Moscow Institute of Physics and Technology State University, Dolgoprudny, Russia. m Also at The Collaborative Innovation Center of Quantum Matter (CICQM), Beijing, China. n Also at Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal. o Also at Universita di Napoli Parthenope, Napoli, Italy. p Also at Institute of Particle Physics (IPP), Canada. q Also at II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany. r Also at Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy. s Also at Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania. t Also at CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France. u Also at Department of Physics, St. Petersburg State Polytechnical University, St. Petersburg, Russia. v Also at Borough of Manhattan Community College, City University of New York, New York, USA. w Also at Department of Financial and Management Engineering, University of the Aegean, Chios, Greece. x Also at Centre for High Performance Computing, CSIR Campus, Rosebank, Cape Town, South Africa. y Also at Louisiana Tech University, Ruston, Louisiana, USA. z Also at California State University, East Bay, USA. aa Also at Institucio Catalana de Recerca i Estudis Avancats, ICREA, Barcelona, Spain. bb Also at Department of Physics, University of Michigan, Ann Arbor, Michigan, USA. cc Also at LAL, Université Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, Orsay, France. dd Also at Graduate School of Science, Osaka University, Osaka, Japan. ee Also at Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany. ff Also at Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen, Netherlands. gg Also at Near East University, Nicosia, North Cyprus, Mersin, Turkey. hh Also at Institute of Theoretical Physics, Ilia State University, Tbilisi, Georgia. ii Also at CERN, Geneva, Switzerland. jj Also at Department of Physics, Stanford University, USA. kk Also at Manhattan College, New York, New York, USA. ll Also at Hellenic Open University, Patras, Greece. mm Also at LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France. nn Also at The City College of New York, New York, New York, USA. oo Also at Universidad de Granada, Granada (Spain), Spain. pp Also at Department of Physics, California State University, Sacramento, California, USA. qq Also at Moscow Institute of Physics and Technology State University, Dolgoprudny, Russia. rr Also at Département de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, Switzerland. ss Also at Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom. tt Also at School of Physics, Sun Yat-sen University, Guangzhou, China. 042001-20 PHYSICAL REVIEW LETTERS 123, 042001 (2019) uu Also at Department of Applied Physics and Astronomy, University of Sharjah, Sharjah, United Arab Emirates. vv Also at Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany. ww Also at National Research Nuclear University MEPhI, Moscow, Russia. xx Also at Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Budapest, Hungary. yy Also at Giresun University, Faculty of Engineering, Giresun, Turkey. zz Also at Institute of Physics, Academia Sinica, Taipei, Taiwan. 042001-21