Measurements of production cross sections of polarized same-sign $\PW$ boson pairs in association with two jets in proton-proton collisions at $\sqrt{s}=13\TeV$

Vector boson scattering (VBS) processes probe the electroweak (EW) symmetry breaking mechanism at high energy scales. The unitarity of the tree-level amplitude of the scattering of longitudinally polarized gauge bosons at high energies is restored in the standard model (SM) by a Higgs boson with a mass lower than about 1$\TeV$ [1, 2]. The observation of a Higgs boson with a mass of about $125\GeV$ [3, 4, 5] provides an explanation that $\PW$ and $\PZ$ gauge bosons acquire mass via the Brout–Englert–Higgs mechanism, but additional Higgs bosons may still play a role in the EW symmetry breaking. Modifications of the VBS cross section for the longitudinally polarized $\PW$ and $\PZ$ bosons are predicted in models of physics beyond the SM through modifications of the Higgs boson couplings to gauge bosons or through the presence of new resonances [6, 7]. The measurements of the longitudinally polarized scattering of the $\PW$ and $\PZ$ bosons provide complementary information to direct measurements of the Higgs boson couplings to gauge bosons [8, 9]. Models of beyond SM physics that modify the cross sections of VBS processes with transversely polarized $\PW$ and $\PZ$ bosons are discussed in Ref. [10].

At the CERN LHC, VBS interactions are characterized by the presence of two gauge bosons in association with two forward jets that have a large rapidity separation. They are part of a class of processes contributing to the same-sign $\PW^{\pm}\PW^{\pm}$ production in association with two jets that proceeds via the EW interaction at tree level, $\mathcal{O}(\alpha^{4})$, where $\alpha$ is the EW coupling, referred to as EW $\PW^{\pm}\PW^{\pm}$ production. The leptonic decay mode $\PW^{\pm}\PW^{\pm}\to\ell^{\pm}\PGn\ell^{\prime\pm}\PGn$, where both $\PW$ bosons decay into electrons or muons, $\ell,\ell^{\prime}=\Pe$, $\Pgm$, is a promising final state to study the polarized scattering from gauge bosons. The background contribution of the quantum chromodynamics (QCD) induced production of $\PW^{\pm}\PW^{\pm}$ boson pairs in association with two jets with tree-level contributions at $\mathcal{O}(\alpha^{2}\alpS^{2})$, where $\alpS$ is the strong coupling, is small. Figure 1 shows representative Feynman diagrams of VBS processes involving self-interactions between gauge bosons through triple and quartic gauge couplings and the $t$-channel Higgs boson exchange.

The unpolarized EW $\PW^{\pm}\PW^{\pm}$ production has been previously measured at the LHC in the leptonic decay modes at $\sqrt{s}=8$ and $13\TeV$ [11, 12, 13, 14, 15]. The first differential cross section measurements were reported in Ref. [15]. This Letter presents the first measurement of the EW production cross sections for polarized same-sign $\PW^{\pm}\PW^{\pm}$ boson pairs. The data sample of proton-proton ($\Pp\Pp$) collisions at $\sqrt{s}=13\TeV$ corresponds to an integrated luminosity of $137\fbinv$ [16, 17, 18], collected with the CMS detector [19] in three LHC operating periods during the years 2016, 2017, and 2018. The three data sets are analyzed independently, with appropriate calibrations and corrections, because of the various LHC operating conditions and the upgrades in the performance of the CMS detector. Candidate events contain exactly two identified same-sign leptons, moderate missing transverse momentum, and two jets with a large rapidity separation and a high dijet mass.

In the $\PW^{\pm}\PW^{\pm}$ channel, each of the \PWbosons can be polarized either longitudinally ($\PW_{\mathrm{L}}$) or transversely ($\PW_{\mathrm{T}}$), leading to three distinct contributions $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$. Ideally, we would measure all three contributions separately, but the current data sample size is too limited. Therefore, two maximum-likelihood fits are performed: one for $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$; and another for $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$. The index $X$ indicates either of the two polarization states. The event kinematical properties are used to extract the various contributions. Two sets of results are reported with the helicity eigenstates defined either in the $\PW\PW$ center-of-mass reference frame or in the initial-state parton-parton one.

The central feature of the CMS apparatus is a superconducting solenoid of 6\unitm internal diameter, providing a magnetic field of 3.8\unitT. Within the solenoid volume are a silicon pixel and strip tracker, a lead tungstate crystal electromagnetic calorimeter (ECAL), and a brass and scintillator hadron calorimeter, each composed of a barrel and two endcap sections. Forward calorimeters extend the pseudorapidity ($\eta$) coverage provided by the barrel and endcap detectors. Muons are detected in gas-ionization detectors embedded in the steel flux-return yoke outside the solenoid. A more detailed description of the CMS detector, together with a definition of the coordinate system used and the relevant kinematic variables, is given in Ref. [19].

The first level of the CMS trigger system, composed of custom hardware processors, uses information from the calorimeters and muon detectors to select events of interest with a latency of less than 4\mus. The second level, known as the high-level trigger, consists of a farm of processors running a version of the full event reconstruction software optimized for fast processing, and reduces the event rate to about 1\unitkHz before data storage [20].

Several Monte Carlo (MC) event generators are used to simulate the signal and background contributions. Three independent sets of simulated events for each process are needed to match the data-taking conditions in the various years. All generated events are processed through a simulation of the CMS detector based on \GEANTfour [21] and are reconstructed with the same algorithms used for data. Additional $\Pp\Pp$ interactions in the same and nearby bunch crossings, referred to as pileup, are also simulated. The distribution of the number of pileup interactions in the simulation is adjusted to match the one observed in the data. The average number of pileup interactions was 23 (32) in 2016 (2017 and 2018).

The SM EW $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ signal processes, where both bosons decay leptonically, are separately simulated using $\MGvATNLO$ 2.7.2, with the implementation of polarized parton scattering [22, 23, 24], at leading order (LO) with six EW ($\mathcal{O}(\alpha^{6})$) and zero QCD vertices. The NNPDF 3.1 next-to-next-to-leading-order (NNLO) [25] parton distribution functions (PDFs) are used. Signal processes are simulated with the helicity eigenstates defined either in the $\PW^{\pm}\PW^{\pm}$ center-of-mass reference frame or in the initial parton-parton reference frame. The Phantom 1.5.1 generator [26, 27] uses the on-shell projection technique for the predictions of the signal processes as discussed in Ref. [28]. The $\MGvATNLO$ predictions show satisfactory agreement within the statistical uncertainties with the Phantom predictions in the relevant fiducial region, defined in Section 0.8, for this analysis. Comparisons of the $\MGvATNLO$ predictions with predictions based on the on-shell projection technique are reported in Ref. [24]. The small contributions of off-shell and nonresonant production [28] are not included in the simulated signal samples and amount to 1–2% in the fiducial region.

The full next-to-leading-order (NLO) QCD and EW corrections for the leptonic unpolarized $\PW^{\pm}\PW^{\pm}$ scattering process have been computed [29, 30], and they reduce the LO cross section for the EW $\PW^{\pm}\PW^{\pm}$ process by approximately 10–15%, with the correction increasing in magnitude to up to 25% with increasing dilepton and dijet masses. The NLO corrections for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes are not known. The corrections for the unpolarized EW $\PW^{\pm}\PW^{\pm}$ process at orders of $\mathcal{O}(\alpS\alpha^{6})$ and $\mathcal{O}(\alpha^{7})$ are applied to the $\MGvATNLO$ LO cross sections for the $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ process. Only the corrections at order of $\mathcal{O}(\alpS\alpha^{6})$ are applied to the $\MGvATNLO$ LO cross sections for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$ processes because the corrections at order $\mathcal{O}(\alpha^{7})$ are expected to be smaller for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$ processes compared to the size of the corresponding corrections for the unpolarized EW $\PW^{\pm}\PW^{\pm}$ process [31]. There is a negligible effect in the measured cross sections from differences in the event kinematical properties caused by the treatment of the NLO corrections.

The EW $\PW\PZ$ background process is simulated with $\MGvATNLO$ 2.4.2 at order $\mathcal{O}(\alpha^{6})$. The QCD-induced $\PW\PZ$ process is simulated at LO with up to three additional partons in the matrix element calculations using the $\MGvATNLO$ generator with at least one QCD vertex at tree level. The different jet multiplicities are merged using the MLM scheme [32] to match matrix element and parton shower jets. The $\MGvATNLO$ generator is also used to simulate the QCD-induced $\PW^{\pm}\PW^{\pm}$ process.

The interference between the EW and QCD diagrams for the $\PW^{\pm}\PW^{\pm}$ and $\PW\PZ$ processes is generated with $\MGvATNLO$ including the contributions of order $\alpS\alpha^{5}$. The relative contributions in the fiducial region of the interference term between the EW and the QCD diagrams for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes are comparable to the relative contributions of the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes to the EW $\PW^{\pm}\PW^{\pm}$ cross section. The interferences between the signal processes are expected to be small [24], and good agreement is observed between the incoherent sum of the polarized cross sections and the unpolarized cross sections for the distributions of the observables.

The $\POWHEG$ v2 [33, 34, 35, 36, 37] generator is used to simulate the $\ttbar$, $\PQt\PW$, and other diboson processes at NLO accuracy in QCD. Production of $\ttbar\PW$, $\ttbar\PZ$, $\ttbar\gamma$, and triple vector boson ($\PV\PV\PV$) events is simulated at NLO accuracy in QCD using the $\MGvATNLO$ 2.2.2 (2.4.2) generator for 2016 (2017 and 2018) [22, 23] samples. The $\PQt\PZ\Pq$ process is simulated at NLO in the four-flavor scheme using $\MGvATNLO$ 2.3.3. The $\PQt\PZ\Pq$ MC simulation is normalized using a cross section computed at NLO with $\MGvATNLO$ in the five-flavor scheme, following the procedure described in Ref. [38]. The double parton scattering $\PW^{\pm}\PW^{\pm}$ production is generated at LO using $\PYTHIA$ 8.226 (8.230) [39] for 2016 (2017 and 2018) samples.

The NNPDF 3.0 NLO [40] (NNPDF 3.1 NNLO [25]) PDFs are used for generating all 2016 (2017 and 2018) background samples. For all processes, the parton showering and hadronization are simulated using $\PYTHIA$ 8.226 (8.230) for 2016 (2017 and 2018). The modeling of the underlying event is done using the CUETP8M1 [41, 42] (CP5 [43]) tune for simulated samples corresponding to the 2016 (2017 and 2018) data.

Events are reconstructed using the CMS particle-flow (PF) algorithm [44] that reconstructs and identifies each individual particle with an optimized combination of all subdetector information. The missing transverse momentum vector $\ptvecmiss$ is defined as the projection onto the plane perpendicular to the beam axis of the negative vector sum of the momenta of all reconstructed PF objects in an event. Its magnitude is referred to as $\ptmiss$.

Jets are reconstructed by clustering PF candidates using the anti-\ktalgorithm [45, 46] with a distance parameter of 0.4. Jets are calibrated in the simulation, and separately in data, accounting for energy deposits of neutral particles from pileup and any nonlinear detector response [47]. The effect of pileup is mitigated through a charged-hadron subtraction technique, which removes the energy of charged hadrons not originating from the primary vertex (PV) [48] of the event. Corrections to jet energies to account for the detector response are propagated to $\ptmiss$ [49]. The PV is defined as the vertex with the largest value of summed physics-object $\pt^{2}$. The physics objects are derived from only the tracks assigned to the vertex as inputs by clustering them into jets, including leptons. The $\ptmiss$ is also recalculated only from those jets by summing their negative $\pt$ vectors.

Electrons and muons are reconstructed by associating a track reconstructed in the tracking detectors with either a cluster of energy in the ECAL [50, 51] or a track in the muon system [52]. Electron and muon candidates must pass certain identification criteria to be further selected in the analysis. For the “loose” identification, they must satisfy $\pt>10\GeV$ and $\abs{\eta}<2.5$ (2.4) for electrons (muons). At the final stage of the lepton selection the “tight” working points criteria following the definitions provided in Refs. [50, 52] are chosen, including requirements on the impact parameter of the candidates with respect to the PV and their isolation with respect to other particles in the event [9].

For electrons, the background contribution coming from a mismeasurement of the track charge is not negligible. The sign of this charge is evaluated using three observables that measure the electron curvature applying different methods; requiring all three charge evaluations to agree reduces this background contribution by a factor of five with an efficiency of about 97% [50]. The charge mismeasurement is negligible for muons [53, 54].

Collision events are collected using single-electron (single-muon) triggers that require the presence of an isolated lepton with $\pt>27$ (24)$\GeV$. In addition, a set of dilepton triggers with lower $\pt$ thresholds, with a threshold of $23\GeV$ or lower for the leading lepton and with a threshold of $8\GeV$ for the subleading lepton, is used. This ensures a trigger efficiency above 99% for events that satisfy the subsequent offline selection.

Several selection requirements are used to isolate the $\PW^{\pm}\PW^{\pm}$ topology defining the signal region (SR) while reducing the contributions of background processes. Candidate events contain exactly two isolated same-sign charged leptons and at least two jets with $\pt^{\mathrm{j}}>50\GeV$ and $\abs{\eta}<4.7$. Jets that are within $\Delta R=\sqrt{\smash[b]{(\Delta\phi)^{2}+(\Delta\eta)^{2}}}<0.4$ of one of the identified leptons are not used in the analysis. Here $\Delta\phi$ and $\Delta\eta$ refer to the differences in the azimuthal angle $\phi$ and $\eta$ of the jet and the charged-lepton candidate, respectively. Because of the presence of undetected neutrinos in the signal events, $\ptmiss$ is required to exceed $30\GeV$.

The $\PW^{\pm}\PW^{\pm}$ SR selection requires one of the same-sign leptons to satisfy $\pt>25\GeV$ and the other $\pt>20\GeV$. The mass of the dilepton pair $m_{\ell\ell}$ must be greater than $20\GeV$. Candidate events in the dielectron final state within $15\GeV$ of the nominal $\PZ$ boson mass $m_{\PZ}$ [55] are rejected to reduce the number of $\PZ$ boson background events where the charge of one of the electron candidates is misidentified.

The VBS topology is targeted by requiring the two highest-$\pt$ jets to have a dijet mass $m_{\mathrm{j}\mathrm{j}}>500\GeV$ and a pseudorapidity separation $\abs{\Delta\eta_{\mathrm{j}\mathrm{j}}}>2.5$. The $\PW$ bosons in the VBS topologies are mostly produced in the central rapidity region with respect to the two selected jets. The candidate $\PW^{\pm}\PW^{\pm}$ events are required to satisfy $\max(\mathrm{z}_{\ell}^{*})<0.75$, where $\mathrm{z}_{\ell}^{*}=\abs{\eta^{\ell}-(\eta^{\mathrm{j}_{1}}+\eta^{\mathrm{j}_{2}})/2}/\abs{\Delta\eta_{\mathrm{j}\mathrm{j}}}$ is the Zeppenfeld variable [56], $\eta^{\ell}$ is the pseudorapidity of one of the selected leptons, and $\eta^{\mathrm{j}_{1}}$ and $\eta^{\mathrm{j}_{2}}$ are the pseudorapidities of the two candidate VBS jets.

Candidate events with one or more jets with $\pt>20\GeV$ and $\abs{\eta}<2.4$ that are consistent with the fragmentation of a bottom quark are rejected to reduce the number of top quark background events. The DeepCSV \PQb tagging algorithm [57] is used for this selection. For the chosen working point, the efficiency to select \PQb quark jets is about 70% and the rate for incorrectly tagging jets originating from the hadronization of gluons or $\cPqu$, $\cPqd$, $\cPqs$ quarks is about 1%. The rate for incorrectly tagging jets originating from the hadronization of $\cPqc$ quarks is about 10%. The selection requirements to define the same-sign $\PW^{\pm}\PW^{\pm}$ SR are summarized in Table 0.4.

In the $\PW^{\pm}\PW^{\pm}$ channel, the $\PW$ bosons can each be either longitudinally or transversely polarized leading to different kinematic distributions, reflected in the kinematical properties of the two leptons, the two jets, and $\ptvecmiss$. The $\PW_{\mathrm{L}}$ bosons tend to be radiated at a smaller angle with respect to the incoming quark direction, resulting in a smaller $\PW_{\mathrm{L}}$ boson $\pt$ compared to the radiated $\PW_{\mathrm{T}}$ boson $\pt$. In addition, there are differences in the behavior of the scattering amplitudes as a function of the $\PW^{\pm}\PW^{\pm}$ center-of-mass energy and the scattering angle [58].

Multivariate techniques are used to enhance the separation between the different processes. We implement boosted decision trees (BDTs) with gradient boosting using the tmva package [59]. Two different BDTs, referred to as the signal BDTs, are trained on simulated events to separate either the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ processes or the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes. Several discriminating observables are used as the inputs to the BDTs, including the jet and lepton kinematical properties and $\ptmiss$, as summarized in Table 0.5. The distributions of these observables are taken from the SM predictions. Hypothetical modifications due to beyond the SM physics are assumed to impact only the production rates, but not the kinematic distributions of sensitive variables. Angular variables are included, such as the difference in the azimuthal angles between the leading and subleading jets ($\Delta\phi_{\mathrm{j}\mathrm{j}}$) and leptons ($\Delta\phi_{\ell\ell}$), and the $\Delta R$ between the leading (subleading) jet and the dilepton system $\Delta R_{\mathrm{j}1,\ell\ell}$ ($\Delta R_{\mathrm{j}2,\ell\ell}$ ). The dilepton $\pt^{\ell\ell}$, $m_{\ell\ell}$, and the transverse diboson mass $\mT^{\PW\PW}$ as defined in Ref. [15] are also considered. The kinematic variable $(\pt^{\ell_{1}}\pt^{\ell_{2}})/(\pt^{\mathrm{j}1}\pt^{\mathrm{j}2})$ proposed in Ref. [58] is also included in the BDT inputs. A larger set of discriminating observables was studied, but only variables that improve the sensitivity and show some separation are retained. The distributions of $\Delta\phi_{\mathrm{j}\mathrm{j}}$ (upper), $\Delta\phi_{\ell\ell}$ (middle), and $m_{\ell\ell}$ (lower) at the generator level for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$, and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes with the helicity eigenstates defined in the parton-parton (left) and $\PW^{\pm}\PW^{\pm}$ (right) center-of-mass reference frames are shown in Fig. 2. The signal extraction was also compared with a deep neural network using the Keras [60] deep learning library, interfaced with the TensorFlow [61] library, which led to a consistently good performance.

A combination of methods based on control samples in data and simulation is used to estimate background contributions. Uncertainties related to the theoretical and experimental predictions are described in Section 0.7. The electron charge misidentification in simulation is corrected to reproduce the rate measured in data. Using $\PZ\to\Pe\Pe$ events, the misidentification rate is about 0.01% (0.3%) in the barrel (endcap) region [50]. Oppositely charged dilepton final states from $\ttbar$, $\PQt\PW$, $\PW^{+}\PW^{-}$, and Drell–Yan processes contribute to the background from charge misidentification.

The nonprompt lepton backgrounds originating from leptonic decays of heavy quarks, hadrons misidentified as leptons, and electrons from photon conversion are suppressed by the identification and isolation requirements imposed on electrons and muons. The remaining contribution from the nonprompt lepton background is estimated directly from data following the technique described in Ref. [12], where the yield in a sample of data events dominated by jet production is extrapolated to the signal region using efficiencies for loosely identified leptons to pass the standard lepton selection criteria. A normalization uncertainty of 20% is assigned for the nonprompt lepton background to include possible differences in the composition of jets between the data sample used to derive these efficiencies and the data sample in the $\PW^{\pm}\PW^{\pm}$ SR [9].

Several background-enriched control regions (CRs), disjoint from one another and from the SR, are used to select event samples enriched with $\PW\PZ$, nonprompt lepton, $\PQt\PZ\Pq$, and $\PZ\PZ$ background events. The $\PW\PZ$ CR is defined by requiring three leptons where the opposite-sign same-flavor leptons from the $\PZ$ boson candidate have $\pt>25$ and $10\GeV$ with the dilepton mass within $15\GeV$ of the nominal $\PZ$ boson mass. In events with three same-flavor leptons, the opposite-sign lepton pair with the dilepton mass closest to $m_{\PZ}$ is associated with the $\PZ$ boson. The remaining lepton with $\pt>20\GeV$ is associated with the $\PW$ boson. In addition, the trilepton mass $m_{\ell\ell\ell}$ is required to be greater than $100\GeV$ and $\mathrm{max}(\mathrm{z}_{\ell}^{*})$ must be less than 1.0. Distributions of several kinematic variables in the $\PW\PZ$ CR are reported in Ref. [15].

The nonprompt lepton CR is defined by requiring the same selection as for the $\PW^{\pm}\PW^{\pm}$ SR, but with the \PQb jet veto requirement inverted. The selected sample is enriched with events from the nonprompt lepton background and dominated by semileptonic $\ttbar$ events. Similarly, the $\PQt\PZ\Pq$ CR is defined by requiring the same selection as the $\PW\PZ$ CR, but with the \PQb quark veto requirement inverted. The selected sample is dominated by the $\PQt\PZ\Pq$ background process. Finally, the $\PZ\PZ$ CR requirements select events with four leptons with the same VBS requirements as the $\PW^{\pm}\PW^{\pm}$ SR. The four CRs are used to estimate the normalization of the main background processes from data. All other background processes are estimated from simulation after applying corrections to account for small differences between data and simulation as detailed in Section 0.7.

To distinguish EW $\PW^{\pm}\PW^{\pm}$ production from the SM background processes before extracting the individual polarizations, a BDT is trained using the TMVA package [59]. Several discriminating observables listed in Table 0.6 are used as inputs to this BDT, which we will refer to as the inclusive BDT. The values of $m_{\mathrm{j}\mathrm{j}}$ and $\abs{\Delta\eta_{\mathrm{j}\mathrm{j}}}$ are powerful because VBS topologies typically have large values for the dijet mass and pseudorapidity separation [15]. The SM background processes are dominated by the nonprompt lepton background contribution, which comes mainly from top quark production. A large training background sample of simulated events is obtained by using oppositely charged dilepton events from top quark production.

Several sources of systematic uncertainty in the cross section measurements can affect the rates and shapes of the distributions for the signal and background processes. For each source of uncertainty, the impact in different bins of the final distribution is considered as being fully correlated, whereas different sources of uncertainty are treated as uncorrelated.

The uncertainties in the integrated luminosity measurements for the data used in this analysis are 2.5, 2.3, and 2.5% for the 2016, 2017, and 2018 data samples [16, 17, 18], respectively. The total integrated luminosity has an uncertainty of 1.8% because of the uncorrelated time evolution of some systematic effects.

The simulation of pileup events assumes a total inelastic $\Pp\Pp$ cross section of 69.2\unitmb, with an associated uncertainty of 5% [62, 63]. The impact of the pileup on the expected signal and background yields is less than 1%.

Discrepancies in the lepton reconstruction and identification efficiencies between data and simulation are adjusted by applying corrections to all MC simulation samples. The efficiency corrections, which depend on the $\pt$ and $\eta$ of the lepton, are determined using $\PZ\to\ell\ell$ events in the $\PZ$ boson peak region [52, 50]. The determination of the trigger efficiency leads to an uncertainty smaller than 1% in the expected signal yield. The lepton momentum scale uncertainty is computed by varying the momenta of the leptons in the simulation by their uncertainties, and by repeating the analysis selection. The resulting uncertainties in the event yields are about 1% for both electrons and muons. These uncertainties are treated as correlated across the three data sets.

The uncertainty in the calibration of the jet energy scale and resolution directly affects the selection efficiency of the jet multiplicity requirement and the $\ptmiss$ measurement. These effects are estimated by changing the jet energy in the simulation up- and downwards by one standard deviation. The uncertainty in the jet energy scale and resolution is 2–5%, depending on the $\pt$ and $\eta$ [47], and the impact on the expected signal and background yields is 1–4%.

Discrepancies in the \PQb tagging efficiency between data and simulation are adjusted by applying corrections to the simulated samples [57], which are estimated separately for correctly and incorrectly identified jets. Each set of values results in uncertainties in the \PQb tagging efficiency of about 1–4%, and the impact on the expected signal and background yields is about 1%. The uncertainties in the jet energy scale and \PQb tagging are treated as uncorrelated across the three data sets.

The dominant theoretical uncertainties corresponding to the choice of the QCD renormalization and factorization scales are estimated by varying these scales independently up and down by a factor of two from their nominal values. The largest cross section variation, while excluding the two extreme variations where one scale is varied up and the other one down, is taken as the uncertainty . The PDF uncertainties are evaluated according to the procedure described in Ref. [64]. The scale and PDF uncertainties for the processes estimated from simulation are treated as fully correlated across bins for the distributions used to extract the results. The effect of $\mathcal{O}(\alpha^{7})$ correction for the unpolarized EW $\PW^{\pm}\PW^{\pm}$ process on the shapes of the distributions for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{T}}$ processes is considered as a systematic uncertainty. The correction values are used as a symmetric shape uncertainty. The uncertainties associated with the limited numbers of simulated events and of data events used to estimate the nonprompt lepton background are also included as systematic uncertainties with the latter being the dominant contribution. A summary of the systematic uncertainties in the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$, and in the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ cross section measurements is shown in Table 0.7.

Binned maximum-likelihood fits are performed to discriminate between the signals and the remaining backgrounds using the $\PW^{\pm}\PW^{\pm}$ SR and the $\PW\PZ$, nonprompt lepton, $\PQt\PZ\Pq$, and $\PZ\PZ$ CRs. Two separate fits are performed, one for the simultaneous measurements of the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ cross sections and a second for the simultaneous measurements of the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ cross sections. The systematic uncertainties are treated as nuisance parameters and are profiled [65, 66] with the shape and normalization of each distribution varying within the respective uncertainties in the fit. The normalization uncertainties are treated as log-normal nuisance parameters. The nuisance parameters are not significantly constrained. The small QCD $\PW^{\pm}\PW^{\pm}$ contribution is normalized to the SM prediction and allowed to vary within the uncertainties. The normalizations of the $\PQt\PZ\Pq$, $\PZ\PZ$, and $\PW\PZ$ background processes are free parameters of the maximum-likelihood fits, together with the signal cross sections. A two-dimensional distribution is used in the simultaneous fits for the $\PW^{\pm}\PW^{\pm}$ SR with five bins in the inclusive BDT and five bins in the corresponding signal BDT. The $m_{\mathrm{j}\mathrm{j}}$ distribution is used for the CRs in the fit with four bins. The bin boundaries are chosen to have similar $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ contributions across the bins.

The interference contributions between the EW and QCD diagrams for the $\PW^{\pm}\PW^{\pm}$ and $\PW\PZ$ processes are normalized to the SM predictions within the uncertainties. The impact of treatment of the interference contributions on the results is evaluated by performing a set of alternative fits where the interference contributions between the EW diagrams for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ or $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes and QCD diagrams are scaled with the square root of the measured to the predicted cross section ratios. The two approaches yield consistent results.

The distributions of $m_{\mathrm{j}\mathrm{j}}$ (upper left), $\Delta\phi_{\mathrm{j}\mathrm{j}}$ (upper right), $\Delta\phi_{\ell\ell}$ (lower left), and the output score of the inclusive BDT (lower right) in the $\PW^{\pm}\PW^{\pm}$ SR are shown in Fig. 3. The distributions of the two signal BDT output scores are shown in Fig. 4. The predicted yields are shown with their best fit normalizations from the simultaneous fit for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ cross sections. The data yields, together with the SM expectations with the best fit normalizations, are given in Table 0.8. The background yields with the best fit normalizations from the simultaneous fit for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ cross sections are consistent with the yields shown in Table 0.8 within a few percent.

The fiducial region for the cross section measurements is defined by requiring two same-sign leptons (electrons or muons) with $\pt>20\GeV$, $\abs{\eta}<2.5$, and $m_{\ell\ell}>20\GeV$, and two jets with $m_{\mathrm{j}\mathrm{j}}>500\GeV$ and $\abs{\Delta\eta_{\mathrm{j}\mathrm{j}}}>2.5$. The leptons at the generator level are selected at the so-called dressed level by combining the four-momentum of each lepton after final-state photon radiation with that of photons found within a cone of $\Delta R=0.1$ around the lepton. The jets at generator level are clustered from stable particles, excluding neutrinos, using the anti-$\kt$ clustering algorithm with a distance parameter of 0.4, and are required to satisfy $\pt>50\GeV$ and $\abs{\eta}<4.7$. Jets within $\Delta R<0.4$ of the selected charged leptons are not included. The overall signal selection efficiency within the fiducial region is about 40%. Electrons and muons produced in the decay of a $\tau$ lepton are not included in the definition of the fiducial region. Nonfiducial signal events, $\ie$, events selected at the reconstructed level that do not satisfy the fiducial requirements, are scaled together with the fiducial signal events in the simultaneous fit. The relative contribution of the nonfiducial events is approximately 20%. The nonfiducial events are treated as background processes.

The fit results for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ cross sections are shown in Fig. 5 as scans of the negative profile log-likelihood, $-2\Delta\text{ln}\mathcal{L}$, as a function of the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ cross section. The expected distributions include the contribution from the $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ process. The corresponding observed (expected) upper limit at 95% confidence level (\CL) is 1.17 (0.88)\unitfb. The fiducial cross section measurements for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$ processes and the theoretical predictions are shown in Table 0.8. The measured cross section values agree with the theoretical predictions within uncertainties.

The fiducial cross section measurements for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{\mathrm{T}}\PW^{\pm}_{\mathrm{T}}$ processes are extracted from a separate fit including the corresponding signal BDT. The measurements and the theoretical predictions are summarized in Table 0.8. The significance of the measured $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ yield is quantified using background-only hypothesis, \ie, assuming no contribution from the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ process, under the asymptotic approximation [67] and corresponds to 2.3 standard deviations. The expected significance is evaluated with an Asimov data set [67] and corresponds to 3.1 standard deviations.

The measurements are also performed for the polarized observables defined using the helicity eigenstates in the initial state parton-parton center-of-mass reference frame. Defining the polarization vectors in the parton-parton center-of-mass reference frame changes the respective contributions of $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$, $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ and $\PW^{\pm}_{X}\PW^{\pm}_{\mathrm{T}}$, and the distributions of the input observables sensitive to the polarization [68]. The fiducial cross section measurements and the theoretical predictions are summarized in Table 0.8. The observed (expected) 95% \CLupper limit of the production cross section is 1.06 (0.85)\unitfb for the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{\mathrm{L}}$ process. The observed (expected) significance of the $\PW^{\pm}_{\mathrm{L}}\PW^{\pm}_{X}$ process is 2.6 (2.9) standard deviations.

The first measurements of production cross sections for polarized same-sign $\PW^{\pm}\PW^{\pm}$ boson pairs are reported. The measurements are based on a sample of proton-proton collisions at a center-of-mass energy of $13\TeV$ collected by the CMS detector at the LHC, corresponding to an integrated luminosity of $137\fbinv$. Events are selected by requiring exactly two same-sign leptons (electrons or muons), moderate missing transverse momentum, and two jets with a large rapidity separation and a high dijet mass. Boosted decision trees are used to separate between the polarized scattering processes by exploiting the kinematic differences. An observed (expected) 95% confidence level upper limit on the production cross section for longitudinally polarized same-sign $\PW^{\pm}\PW^{\pm}$ boson pairs of 1.17 (0.88)\unitfb is reported with the helicity eigenstates defined in the $\PW^{\pm}\PW^{\pm}$ center-of-mass reference frame. The electroweak production of the $\PW^{\pm}\PW^{\pm}$ boson pairs where at least one of the $\PW$ bosons is longitudinally polarized is measured with an observed (expected) significance of 2.3 (3.1) standard deviations. Results are also reported with the polarizations defined in the parton-parton center-of-mass reference frame. The measured cross section values agree with the standard model predictions.

Yerevan Physics Institute, Yerevan, Armenia
A.M. Sirunyan${}^{\textrm{\textdagger}}$, A. Tumasyan

Institut für Hochenergiephysik, Wien, Austria
W. Adam, T. Bergauer, M. Dragicevic, J. Erö, A. Escalante Del Valle, R. Frühwirth\cmsAuthorMark1, M. Jeitler\cmsAuthorMark1, N. Krammer, L. Lechner, D. Liko, I. Mikulec, F.M. Pitters, N. Rad, J. Schieck\cmsAuthorMark1, R. Schöfbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz\cmsAuthorMark1, M. Zarucki

Institute for Nuclear Problems, Minsk, Belarus
V. Chekhovsky, A. Litomin, V. Makarenko, J. Suarez Gonzalez

Universiteit Antwerpen, Antwerpen, Belgium
M.R. Darwish\cmsAuthorMark2, E.A. De Wolf, D. Di Croce, X. Janssen, T. Kello\cmsAuthorMark3, A. Lelek, M. Pieters, H. Rejeb Sfar, H. Van Haevermaet, P. Van Mechelen, S. Van Putte, N. Van Remortel

Vrije Universiteit Brussel, Brussel, Belgium
F. Blekman, E.S. Bols, S.S. Chhibra, J. D’Hondt, J. De Clercq, D. Lontkovskyi, S. Lowette, I. Marchesini, S. Moortgat, A. Morton, Q. Python, S. Tavernier, W. Van Doninck, P. Van Mulders

Université Libre de Bruxelles, Bruxelles, Belgium
D. Beghin, B. Bilin, B. Clerbaux, G. De Lentdecker, B. Dorney, L. Favart, A. Grebenyuk, A.K. Kalsi, I. Makarenko, L. Moureaux, L. Pétré, A. Popov, N. Postiau, E. Starling, L. Thomas, C. Vander Velde, P. Vanlaer, D. Vannerom, L. Wezenbeek

Ghent University, Ghent, Belgium
T. Cornelis, D. Dobur, M. Gruchala, I. Khvastunov\cmsAuthorMark4, M. Niedziela, C. Roskas, K. Skovpen, M. Tytgat, W. Verbeke, B. Vermassen, M. Vit

Université Catholique de Louvain, Louvain-la-Neuve, Belgium
G. Bruno, F. Bury, C. Caputo, P. David, C. Delaere, M. Delcourt, I.S. Donertas, A. Giammanco, V. Lemaitre, K. Mondal, J. Prisciandaro, A. Taliercio, M. Teklishyn, P. Vischia, S. Wertz, S. Wuyckens

Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
G.A. Alves, C. Hensel, A. Moraes

Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
W.L. Aldá Júnior, E. Belchior Batista Das Chagas, H. BRANDAO MALBOUISSON, W. Carvalho, J. Chinellato\cmsAuthorMark5, E. Coelho, E.M. Da Costa, G.G. Da Silveira\cmsAuthorMark6, D. De Jesus Damiao, S. Fonseca De Souza, J. Martins\cmsAuthorMark7, D. Matos Figueiredo, M. Medina Jaime\cmsAuthorMark8, C. Mora Herrera, L. Mundim, H. Nogima, P. Rebello Teles, L.J. Sanchez Rosas, A. Santoro, S.M. Silva Do Amaral, A. Sznajder, M. Thiel, F. Torres Da Silva De Araujo, A. Vilela Pereira

Universidade Estadual Paulista ^a, Universidade Federal do ABC ^b, São Paulo, Brazil
C.A. Bernardes^a,a, L. Calligaris^a, T.R. Fernandez Perez Tomei^a, E.M. Gregores^a,b, D.S. Lemos^a, P.G. Mercadante^a,b, S.F. Novaes^a, Sandra S. Padula^a

Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
A. Aleksandrov, G. Antchev, I. Atanasov, R. Hadjiiska, P. Iaydjiev, M. Misheva, M. Rodozov, M. Shopova, G. Sultanov

University of Sofia, Sofia, Bulgaria
A. Dimitrov, T. Ivanov, L. Litov, B. Pavlov, P. Petkov, A. Petrov

Beihang University, Beijing, China
T. Cheng, W. Fang\cmsAuthorMark3, Q. Guo, H. Wang, L. Yuan

Department of Physics, Tsinghua University, Beijing, China
M. Ahmad, G. Bauer, Z. Hu, Y. Wang, K. Yi\cmsAuthorMark9^,\cmsAuthorMark10

Institute of High Energy Physics, Beijing, China
E. Chapon, G.M. Chen\cmsAuthorMark11, H.S. Chen\cmsAuthorMark11, M. Chen, T. Javaid\cmsAuthorMark11, A. Kapoor, D. Leggat, H. Liao, Z.-A. LIU\cmsAuthorMark11, R. Sharma, A. Spiezia, J. Tao, J. Thomas-wilsker, J. Wang, H. Zhang, S. Zhang\cmsAuthorMark11, J. Zhao

State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
A. Agapitos, Y. Ban, C. Chen, Q. Huang, A. Levin, Q. Li, M. Lu, X. Lyu, Y. Mao, S.J. Qian, D. Wang, Q. Wang, J. Xiao

Sun Yat-Sen University, Guangzhou, China
Z. You

Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University, Shanghai, China
X. Gao\cmsAuthorMark3

Zhejiang University, Hangzhou, China
M. Xiao

Universidad de Los Andes, Bogota, Colombia
C. Avila, A. Cabrera, C. Florez, J. Fraga, A. Sarkar, M.A. Segura Delgado

Universidad de Antioquia, Medellin, Colombia
J. Jaramillo, J. Mejia Guisao, F. Ramirez, J.D. Ruiz Alvarez, C.A. Salazar González, N. Vanegas Arbelaez

University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, Croatia
D. Giljanovic, N. Godinovic, D. Lelas, I. Puljak

University of Split, Faculty of Science, Split, Croatia
Z. Antunovic, M. Kovac, T. Sculac

Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, D. Ferencek, D. Majumder, M. Roguljic, A. Starodumov\cmsAuthorMark12, T. Susa

University of Cyprus, Nicosia, Cyprus
M.W. Ather, A. Attikis, E. Erodotou, A. Ioannou, G. Kole, M. Kolosova, S. Konstantinou, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis, H. Rykaczewski, H. Saka, D. Tsiakkouri

Charles University, Prague, Czech Republic
M. Finger\cmsAuthorMark13, M. Finger Jr.\cmsAuthorMark13, A. Kveton, J. Tomsa

Escuela Politecnica Nacional, Quito, Ecuador
E. Ayala

Universidad San Francisco de Quito, Quito, Ecuador
E. Carrera Jarrin

Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
S. Abu Zeid\cmsAuthorMark14, S. Khalil\cmsAuthorMark15, E. Salama\cmsAuthorMark16^,\cmsAuthorMark14

Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
M.A. Mahmoud, Y. Mohammed\cmsAuthorMark17

National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
S. Bhowmik, A. Carvalho Antunes De Oliveira, R.K. Dewanjee, K. Ehataht, M. Kadastik, M. Raidal, C. Veelken

Department of Physics, University of Helsinki, Helsinki, Finland
P. Eerola, L. Forthomme, H. Kirschenmann, K. Osterberg, M. Voutilainen

Helsinki Institute of Physics, Helsinki, Finland
E. Brücken, F. Garcia, J. Havukainen, V. Karimäki, M.S. Kim, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Lehti, T. Lindén, H. Siikonen, E. Tuominen, J. Tuominiemi

Lappeenranta University of Technology, Lappeenranta, Finland
P. Luukka, T. Tuuva

IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
C. Amendola, M. Besancon, F. Couderc, M. Dejardin, D. Denegri, J.L. Faure, F. Ferri, S. Ganjour, A. Givernaud, P. Gras, G. Hamel de Monchenault, P. Jarry, B. Lenzi, E. Locci, J. Malcles, J. Rander, A. Rosowsky, M.Ö. Sahin, A. Savoy-Navarro\cmsAuthorMark18, M. Titov, G.B. Yu

Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
S. Ahuja, F. Beaudette, M. Bonanomi, A. Buchot Perraguin, P. Busson, C. Charlot, O. Davignon, B. Diab, G. Falmagne, R. Granier de Cassagnac, A. Hakimi, I. Kucher, A. Lobanov, C. Martin Perez, M. Nguyen, C. Ochando, P. Paganini, J. Rembser, R. Salerno, J.B. Sauvan, Y. Sirois, A. Zabi, A. Zghiche

Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
J.-L. Agram\cmsAuthorMark19, J. Andrea, D. Bloch, G. Bourgatte, J.-M. Brom, E.C. Chabert, C. Collard, J.-C. Fontaine\cmsAuthorMark19, D. Gelé, U. Goerlach, C. Grimault, A.-C. Le Bihan, P. Van Hove

Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France
E. Asilar, S. Beauceron, C. Bernet, G. Boudoul, C. Camen, A. Carle, N. Chanon, D. Contardo, P. Depasse, H. El Mamouni, J. Fay, S. Gascon, M. Gouzevitch, B. Ille, Sa. Jain, I.B. Laktineh, H. Lattaud, A. Lesauvage, M. Lethuillier, L. Mirabito, L. Torterotot, G. Touquet, M. Vander Donckt, S. Viret

Georgian Technical University, Tbilisi, Georgia
I. Bagaturia\cmsAuthorMark20, Z. Tsamalaidze\cmsAuthorMark13

RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
L. Feld, K. Klein, M. Lipinski, D. Meuser, A. Pauls, M. Preuten, M.P. Rauch, J. Schulz, M. Teroerde

RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
D. Eliseev, M. Erdmann, P. Fackeldey, B. Fischer, S. Ghosh, T. Hebbeker, K. Hoepfner, H. Keller, L. Mastrolorenzo, M. Merschmeyer, A. Meyer, G. Mocellin, S. Mondal, S. Mukherjee, D. Noll, A. Novak, T. Pook, A. Pozdnyakov, Y. Rath, H. Reithler, J. Roemer, A. Schmidt, S.C. Schuler, A. Sharma, S. Wiedenbeck, S. Zaleski

RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
C. Dziwok, G. Flügge, W. Haj Ahmad\cmsAuthorMark21, O. Hlushchenko, T. Kress, A. Nowack, C. Pistone, O. Pooth, D. Roy, H. Sert, A. Stahl\cmsAuthorMark22, T. Ziemons

Deutsches Elektronen-Synchrotron, Hamburg, Germany
H. Aarup Petersen, M. Aldaya Martin, P. Asmuss, I. Babounikau, S. Baxter, O. Behnke, A. Bermúdez Martínez, A.A. Bin Anuar, K. Borras\cmsAuthorMark23, V. Botta, D. Brunner, A. Campbell, A. Cardini, P. Connor, S. Consuegra Rodríguez, V. Danilov, A. De Wit, M.M. Defranchis, L. Didukh, D. Domínguez Damiani, G. Eckerlin, D. Eckstein, T. Eichhorn, L.I. Estevez Banos, E. Gallo\cmsAuthorMark24, A. Geiser, A. Giraldi, A. Grohsjean, M. Guthoff, A. Harb, A. Jafari\cmsAuthorMark25, N.Z. Jomhari, H. Jung, A. Kasem\cmsAuthorMark23, M. Kasemann, H. Kaveh, C. Kleinwort, J. Knolle, D. Krücker, W. Lange, T. Lenz, J. Lidrych, K. Lipka, W. Lohmann\cmsAuthorMark26, T. Madlener, R. Mankel, I.-A. Melzer-Pellmann, J. Metwally, A.B. Meyer, M. Meyer, M. Missiroli, J. Mnich, A. Mussgiller, V. Myronenko, Y. Otarid, D. Pérez Adán, S.K. Pflitsch, D. Pitzl, A. Raspereza, A. Saggio, A. Saibel, M. Savitskyi, V. Scheurer, C. Schwanenberger, A. Singh, R.E. Sosa Ricardo, N. Tonon, O. Turkot, A. Vagnerini, M. Van De Klundert, R. Walsh, D. Walter, Y. Wen, K. Wichmann, C. Wissing, S. Wuchterl, O. Zenaiev, R. Zlebcik

University of Hamburg, Hamburg, Germany
R. Aggleton, S. Bein, L. Benato, A. Benecke, K. De Leo, T. Dreyer, A. Ebrahimi, M. Eich, F. Feindt, A. Fröhlich, C. Garbers, E. Garutti, P. Gunnellini, J. Haller, A. Hinzmann, A. Karavdina, G. Kasieczka, R. Klanner, R. Kogler, V. Kutzner, J. Lange, T. Lange, A. Malara, C.E.N. Niemeyer, A. Nigamova, K.J. Pena Rodriguez, O. Rieger, P. Schleper, S. Schumann, J. Schwandt, D. Schwarz, J. Sonneveld, H. Stadie, G. Steinbrück, B. Vormwald, I. Zoi

Karlsruher Institut fuer Technologie, Karlsruhe, Germany
J. Bechtel, T. Berger, E. Butz, R. Caspart, T. Chwalek, W. De Boer, A. Dierlamm, A. Droll, K. El Morabit, N. Faltermann, K. Flöh, M. Giffels, A. Gottmann, F. Hartmann\cmsAuthorMark22, C. Heidecker, U. Husemann, I. Katkov\cmsAuthorMark27, P. Keicher, R. Koppenhöfer, S. Maier, M. Metzler, S. Mitra, D. Müller, Th. Müller, M. Musich, G. Quast, K. Rabbertz, J. Rauser, D. Savoiu, D. Schäfer, M. Schnepf, M. Schröder, D. Seith, I. Shvetsov, H.J. Simonis, R. Ulrich, M. Wassmer, M. Weber, R. Wolf, S. Wozniewski

Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
G. Anagnostou, P. Asenov, G. Daskalakis, T. Geralis, A. Kyriakis, D. Loukas, G. Paspalaki, A. Stakia

National and Kapodistrian University of Athens, Athens, Greece
M. Diamantopoulou, D. Karasavvas, G. Karathanasis, P. Kontaxakis, C.K. Koraka, A. Manousakis-katsikakis, A. Panagiotou, I. Papavergou, N. Saoulidou, K. Theofilatos, K. Vellidis, E. Vourliotis

National Technical University of Athens, Athens, Greece
G. Bakas, K. Kousouris, I. Papakrivopoulos, G. Tsipolitis, A. Zacharopoulou

University of Ioánnina, Ioánnina, Greece
I. Evangelou, C. Foudas, P. Gianneios, P. Katsoulis, P. Kokkas, K. Manitara, N. Manthos, I. Papadopoulos, J. Strologas

MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
M. Bartók\cmsAuthorMark28, M. Csanad, M.M.A. Gadallah\cmsAuthorMark29, S. Lökös\cmsAuthorMark30, P. Major, K. Mandal, A. Mehta, G. Pasztor, O. Surányi, G.I. Veres

Wigner Research Centre for Physics, Budapest, Hungary
G. Bencze, C. Hajdu, D. Horvath\cmsAuthorMark31, F. Sikler, V. Veszpremi, G. Vesztergombi${}^{\textrm{\textdagger}}$

Institute of Nuclear Research ATOMKI, Debrecen, Hungary
S. Czellar, J. Karancsi\cmsAuthorMark28, J. Molnar, Z. Szillasi, D. Teyssier

Institute of Physics, University of Debrecen, Debrecen, Hungary
P. Raics, Z.L. Trocsanyi, B. Ujvari

Eszterhazy Karoly University, Karoly Robert Campus, Gyongyos, Hungary
T. Csorgo\cmsAuthorMark32, F. Nemes\cmsAuthorMark32, T. Novak

Indian Institute of Science (IISc), Bangalore, India
S. Choudhury, J.R. Komaragiri, D. Kumar, L. Panwar, P.C. Tiwari

National Institute of Science Education and Research, HBNI, Bhubaneswar, India
S. Bahinipati\cmsAuthorMark33, D. Dash, C. Kar, P. Mal, T. Mishra, V.K. Muraleedharan Nair Bindhu, A. Nayak\cmsAuthorMark34, D.K. Sahoo\cmsAuthorMark33, N. Sur, S.K. Swain

Panjab University, Chandigarh, India
S. Bansal, S.B. Beri, V. Bhatnagar, G. Chaudhary, S. Chauhan, N. Dhingra\cmsAuthorMark35, R. Gupta, A. Kaur, S. Kaur, P. Kumari, M. Meena, K. Sandeep, S. Sharma, J.B. Singh, A.K. Virdi

University of Delhi, Delhi, India
A. Ahmed, A. Bhardwaj, B.C. Choudhary, R.B. Garg, M. Gola, S. Keshri, A. Kumar, M. Naimuddin, P. Priyanka, K. Ranjan, A. Shah

Saha Institute of Nuclear Physics, HBNI, Kolkata, India
M. Bharti\cmsAuthorMark36, R. Bhattacharya, S. Bhattacharya, D. Bhowmik, S. Dutta, S. Ghosh, B. Gomber\cmsAuthorMark37, M. Maity\cmsAuthorMark38, S. Nandan, P. Palit, P.K. Rout, G. Saha, B. Sahu, S. Sarkar, M. Sharan, B. Singh\cmsAuthorMark36, S. Thakur\cmsAuthorMark36

Indian Institute of Technology Madras, Madras, India
P.K. Behera, S.C. Behera, P. Kalbhor, A. Muhammad, R. Pradhan, P.R. Pujahari, A. Sharma, A.K. Sikdar

Bhabha Atomic Research Centre, Mumbai, India
D. Dutta, V. Kumar, K. Naskar\cmsAuthorMark39, P.K. Netrakanti, L.M. Pant, P. Shukla

Tata Institute of Fundamental Research-A, Mumbai, India
T. Aziz, M.A. Bhat, S. Dugad, R. Kumar Verma, G.B. Mohanty, U. Sarkar

Tata Institute of Fundamental Research-B, Mumbai, India
S. Banerjee, S. Bhattacharya, S. Chatterjee, R. Chudasama, M. Guchait, S. Karmakar, S. Kumar, G. Majumder, K. Mazumdar, S. Mukherjee, D. Roy

Indian Institute of Science Education and Research (IISER), Pune, India
S. Dube, B. Kansal, S. Pandey, A. Rane, A. Rastogi, S. Sharma

Department of Physics, Isfahan University of Technology, Isfahan, Iran
H. Bakhshiansohi\cmsAuthorMark40, M. Zeinali\cmsAuthorMark41

Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
S. Chenarani\cmsAuthorMark42, S.M. Etesami, M. Khakzad, M. Mohammadi Najafabadi

University College Dublin, Dublin, Ireland
M. Felcini, M. Grunewald

INFN Sezione di Bari ^a, Università di Bari ^b, Politecnico di Bari ^c, Bari, Italy
M. Abbrescia^a,b, R. Aly^a,b,\cmsAuthorMark43, C. Aruta^a,b, A. Colaleo^a, D. Creanza^a,c, N. De Filippis^a,c, M. De Palma^a,b, A. Di Florio^a,b, A. Di Pilato^a,b, W. Elmetenawee^a,b, L. Fiore^a, A. Gelmi^a,b, M. Gul^a, G. Iaselli^a,c, M. Ince^a,b, S. Lezki^a,b, G. Maggi^a,c, M. Maggi^a, I. Margjeka^a,b, V. Mastrapasqua^a,b, J.A. Merlin^a, S. My^a,b, S. Nuzzo^a,b, A. Pompili^a,b, G. Pugliese^a,c, A. Ranieri^a, G. Selvaggi^a,b, L. Silvestris^a, F.M. Simone^a,b, R. Venditti^a, P. Verwilligen^a

INFN Sezione di Bologna ^a, Università di Bologna ^b, Bologna, Italy
G. Abbiendi^a, C. Battilana^a,b, D. Bonacorsi^a,b, L. Borgonovi^a, S. Braibant-Giacomelli^a,b, R. Campanini^a,b, P. Capiluppi^a,b, A. Castro^a,b, F.R. Cavallo^a, C. Ciocca^a, M. Cuffiani^a,b, G.M. Dallavalle^a, T. Diotalevi^a,b, F. Fabbri^a, A. Fanfani^a,b, E. Fontanesi^a,b, P. Giacomelli^a, L. Giommi^a,b, C. Grandi^a, L. Guiducci^a,b, F. Iemmi^a,b, S. Lo Meo^a,\cmsAuthorMark44, S. Marcellini^a, G. Masetti^a, F.L. Navarria^a,b, A. Perrotta^a, F. Primavera^a,b, A.M. Rossi^a,b, T. Rovelli^a,b, G.P. Siroli^a,b, N. Tosi^a

INFN Sezione di Catania ^a, Università di Catania ^b, Catania, Italy
S. Albergo^a,b,\cmsAuthorMark45, S. Costa^a,b, A. Di Mattia^a, R. Potenza^a,b, A. Tricomi^a,b,\cmsAuthorMark45, C. Tuve^a,b

INFN Sezione di Firenze ^a, Università di Firenze ^b, Firenze, Italy
G. Barbagli^a, A. Cassese^a, R. Ceccarelli^a,b, V. Ciulli^a,b, C. Civinini^a, R. D’Alessandro^a,b, F. Fiori^a, E. Focardi^a,b, G. Latino^a,b, P. Lenzi^a,b, M. Lizzo^a,b, M. Meschini^a, S. Paoletti^a, R. Seidita^a,b, G. Sguazzoni^a, L. Viliani^a

INFN Laboratori Nazionali di Frascati, Frascati, Italy
L. Benussi, S. Bianco, D. Piccolo

INFN Sezione di Genova ^a, Università di Genova ^b, Genova, Italy
M. Bozzo^a,b, F. Ferro^a, R. Mulargia^a,b, E. Robutti^a, S. Tosi^a,b

INFN Sezione di Milano-Bicocca ^a, Università di Milano-Bicocca ^b, Milano, Italy
A. Benaglia^a, A. Beschi^a,b, F. Brivio^a,b, F. Cetorelli^a,b, V. Ciriolo^a,b,\cmsAuthorMark22, F. De Guio^a,b, M.E. Dinardo^a,b, P. Dini^a, S. Gennai^a, A. Ghezzi^a,b, P. Govoni^a,b, L. Guzzi^a,b, M. Malberti^a, S. Malvezzi^a, A. Massironi^a, D. Menasce^a, F. Monti^a,b, L. Moroni^a, M. Paganoni^a,b, D. Pedrini^a, S. Ragazzi^a,b, T. Tabarelli de Fatis^a,b, D. Valsecchi^a,b,\cmsAuthorMark22, D. Zuolo^a,b

INFN Sezione di Napoli ^a, Università di Napoli ’Federico II’ ^b, Napoli, Italy, Università della Basilicata ^c, Potenza, Italy, Università G. Marconi ^d, Roma, Italy
S. Buontempo^a, N. Cavallo^a,c, A. De Iorio^a,b, F. Fabozzi^a,c, F. Fienga^a, A.O.M. Iorio^a,b, L. Lista^a,b, S. Meola^a,d,\cmsAuthorMark22, P. Paolucci^a,\cmsAuthorMark22, B. Rossi^a, C. Sciacca^a,b, E. Voevodina^a,b

INFN Sezione di Padova ^a, Università di Padova ^b, Padova, Italy, Università di Trento ^c, Trento, Italy
P. Azzi^a, N. Bacchetta^a, D. Bisello^a,b, P. Bortignon^a, A. Bragagnolo^a,b, R. Carlin^a,b, P. Checchia^a, P. De Castro Manzano^a, T. Dorigo^a, F. Gasparini^a,b, U. Gasparini^a,b, S.Y. Hoh^a,b, L. Layer^a,\cmsAuthorMark46, M. Margoni^a,b, A.T. Meneguzzo^a,b, M. Presilla^a,b, P. Ronchese^a,b, R. Rossin^a,b, F. Simonetto^a,b, G. Strong^a, M. Tosi^a,b, H. YARAR^a,b, M. Zanetti^a,b, P. Zotto^a,b, A. Zucchetta^a,b, G. Zumerle^a,b

INFN Sezione di Pavia ^a, Università di Pavia ^b, Pavia, Italy
C. Aime‘^a,b, A. Braghieri^a, S. Calzaferri^a,b, D. Fiorina^a,b, P. Montagna^a,b, S.P. Ratti^a,b, V. Re^a, M. Ressegotti^a,b, C. Riccardi^a,b, P. Salvini^a, I. Vai^a, P. Vitulo^a,b

INFN Sezione di Perugia ^a, Università di Perugia ^b, Perugia, Italy
M. Biasini^a,b, G.M. Bilei^a, D. Ciangottini^a,b, L. Fanò^a,b, P. Lariccia^a,b, G. Mantovani^a,b, V. Mariani^a,b, M. Menichelli^a, F. Moscatelli^a, A. Piccinelli^a,b, A. Rossi^a,b, A. Santocchia^a,b, D. Spiga^a, T. Tedeschi^a,b

INFN Sezione di Pisa ^a, Università di Pisa ^b, Scuola Normale Superiore di Pisa ^c, Pisa, Italy
K. Androsov^a, P. Azzurri^a, G. Bagliesi^a, V. Bertacchi^a,c, L. Bianchini^a, T. Boccali^a, R. Castaldi^a, M.A. Ciocci^a,b, R. Dell’Orso^a, M.R. Di Domenico^a,b, S. Donato^a, L. Giannini^a,c, A. Giassi^a, M.T. Grippo^a, F. Ligabue^a,c, E. Manca^a,c, G. Mandorli^a,c, A. Messineo^a,b, F. Palla^a, G. Ramirez-Sanchez^a,c, A. Rizzi^a,b, G. Rolandi^a,c, S. Roy Chowdhury^a,c, A. Scribano^a, N. Shafiei^a,b, P. Spagnolo^a, R. Tenchini^a, G. Tonelli^a,b, N. Turini^a, A. Venturi^a, P.G. Verdini^a

INFN Sezione di Roma ^a, Sapienza Università di Roma ^b, Rome, Italy
F. Cavallari^a, M. Cipriani^a,b, D. Del Re^a,b, E. Di Marco^a, M. Diemoz^a, E. Longo^a,b, P. Meridiani^a, G. Organtini^a,b, F. Pandolfi^a, R. Paramatti^a,b, C. Quaranta^a,b, S. Rahatlou^a,b, C. Rovelli^a, F. Santanastasio^a,b, L. Soffi^a,b, R. Tramontano^a,b

INFN Sezione di Torino ^a, Università di Torino ^b, Torino, Italy, Università del Piemonte Orientale ^c, Novara, Italy
N. Amapane^a,b, R. Arcidiacono^a,c, S. Argiro^a,b, M. Arneodo^a,c, N. Bartosik^a, R. Bellan^a,b, A. Bellora^a,b, J. Berenguer Antequera^a,b, C. Biino^a, A. Cappati^a,b, N. Cartiglia^a, S. Cometti^a, M. Costa^a,b, R. Covarelli^a,b, N. Demaria^a, B. Kiani^a,b, F. Legger^a, C. Mariotti^a, S. Maselli^a, E. Migliore^a,b, V. Monaco^a,b, E. Monteil^a,b, M. Monteno^a, M.M. Obertino^a,b, G. Ortona^a, L. Pacher^a,b, N. Pastrone^a, M. Pelliccioni^a, G.L. Pinna Angioni^a,b, M. Ruspa^a,c, R. Salvatico^a,b, F. Siviero^a,b, V. Sola^a, A. Solano^a,b, D. Soldi^a,b, A. Staiano^a, M. Tornago^a,b, D. Trocino^a,b

INFN Sezione di Trieste ^a, Università di Trieste ^b, Trieste, Italy
S. Belforte^a, V. Candelise^a,b, M. Casarsa^a, F. Cossutti^a, A. Da Rold^a,b, G. Della Ricca^a,b, F. Vazzoler^a,b

Kyungpook National University, Daegu, Korea
S. Dogra, C. Huh, B. Kim, D.H. Kim, G.N. Kim, J. Lee, S.W. Lee, C.S. Moon, Y.D. Oh, S.I. Pak, B.C. Radburn-Smith, S. Sekmen, Y.C. Yang

Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
H. Kim, D.H. Moon

Hanyang University, Seoul, Korea
B. Francois, T.J. Kim, J. Park

Korea University, Seoul, Korea
S. Cho, S. Choi, Y. Go, S. Ha, B. Hong, K. Lee, K.S. Lee, J. Lim, J. Park, S.K. Park, J. Yoo

Kyung Hee University, Department of Physics, Seoul, Republic of Korea
J. Goh, A. Gurtu

Sejong University, Seoul, Korea
H.S. Kim, Y. Kim

Seoul National University, Seoul, Korea
J. Almond, J.H. Bhyun, J. Choi, S. Jeon, J. Kim, J.S. Kim, S. Ko, H. Kwon, H. Lee, K. Lee, S. Lee, K. Nam, B.H. Oh, M. Oh, S.B. Oh, H. Seo, U.K. Yang, I. Yoon

University of Seoul, Seoul, Korea
D. Jeon, J.H. Kim, B. Ko, J.S.H. Lee, I.C. Park, Y. Roh, D. Song, I.J. Watson

Yonsei University, Department of Physics, Seoul, Korea
H.D. Yoo

Sungkyunkwan University, Suwon, Korea
Y. Choi, C. Hwang, Y. Jeong, H. Lee, Y. Lee, I. Yu

College of Engineering and Technology, American University of the Middle East (AUM), Kuwait
Y. Maghrbi

Riga Technical University, Riga, Latvia
V. Veckalns\cmsAuthorMark47

Vilnius University, Vilnius, Lithuania
A. Juodagalvis, A. Rinkevicius, G. Tamulaitis, A. Vaitkevicius

National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
W.A.T. Wan Abdullah, M.N. Yusli, Z. Zolkapli

Universidad de Sonora (UNISON), Hermosillo, Mexico
J.F. Benitez, A. Castaneda Hernandez, J.A. Murillo Quijada, L. Valencia Palomo

Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
G. Ayala, H. Castilla-Valdez, E. De La Cruz-Burelo, I. Heredia-De La Cruz\cmsAuthorMark48, R. Lopez-Fernandez, C.A. Mondragon Herrera, D.A. Perez Navarro, A. Sanchez-Hernandez

Universidad Iberoamericana, Mexico City, Mexico
S. Carrillo Moreno, C. Oropeza Barrera, M. Ramirez-Garcia, F. Vazquez Valencia

Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
J. Eysermans, I. Pedraza, H.A. Salazar Ibarguen, C. Uribe Estrada

Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
A. Morelos Pineda

University of Montenegro, Podgorica, Montenegro
J. Mijuskovic\cmsAuthorMark4, N. Raicevic

University of Auckland, Auckland, New Zealand
D. Krofcheck

University of Canterbury, Christchurch, New Zealand
S. Bheesette, P.H. Butler

National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
A. Ahmad, M.I. Asghar, A. Awais, M.I.M. Awan, H.R. Hoorani, W.A. Khan, M.A. Shah, M. Shoaib, M. Waqas

AGH University of Science and Technology Faculty of Computer Science, Electronics and Telecommunications, Krakow, Poland
V. Avati, L. Grzanka, M. Malawski

National Centre for Nuclear Research, Swierk, Poland
H. Bialkowska, M. Bluj, B. Boimska, T. Frueboes, M. Górski, M. Kazana, M. Szleper, P. Traczyk, P. Zalewski

Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
K. Bunkowski, K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski, M. Walczak

Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal
M. Araujo, P. Bargassa, D. Bastos, A. Boletti, P. Faccioli, M. Gallinaro, J. Hollar, N. Leonardo, T. Niknejad, J. Seixas, K. Shchelina, O. Toldaiev, J. Varela

Joint Institute for Nuclear Research, Dubna, Russia
S. Afanasiev, A. Baginyan, P. Bunin, Y. Ershov, M. Gavrilenko, A. Golunov, I. Golutvin, I. Gorbunov, A. Kamenev, V. Karjavine, I. Kashunin, A. Lanev, A. Malakhov, V. Matveev\cmsAuthorMark49^,\cmsAuthorMark50, V. Palichik, V. Perelygin, M. Savina, S. Shmatov, V. Smirnov, O. Teryaev, B.S. Yuldashev\cmsAuthorMark51, A. Zarubin

Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
G. Gavrilov, V. Golovtcov, Y. Ivanov, V. Kim\cmsAuthorMark52, E. Kuznetsova\cmsAuthorMark53, V. Murzin, V. Oreshkin, I. Smirnov, D. Sosnov, V. Sulimov, L. Uvarov, S. Volkov, A. Vorobyev

Institute for Nuclear Research, Moscow, Russia
Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, A. Karneyeu, M. Kirsanov, N. Krasnikov, A. Pashenkov, G. Pivovarov, D. Tlisov${}^{\textrm{\textdagger}}$, A. Toropin

Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC ‘Kurchatov Institute’, Moscow, Russia
V. Epshteyn, V. Gavrilov, N. Lychkovskaya, A. Nikitenko\cmsAuthorMark54, V. Popov, G. Safronov, A. Spiridonov, A. Stepennov, M. Toms, E. Vlasov, A. Zhokin

Moscow Institute of Physics and Technology, Moscow, Russia
T. Aushev

National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia
R. Chistov\cmsAuthorMark55, M. Danilov\cmsAuthorMark56, A. Oskin, P. Parygin, S. Polikarpov\cmsAuthorMark55

P.N. Lebedev Physical Institute, Moscow, Russia
V. Andreev, M. Azarkin, I. Dremin, M. Kirakosyan, A. Terkulov

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
A. Belyaev, E. Boos, V. Bunichev, M. Dubinin\cmsAuthorMark57, L. Dudko, A. Ershov, A. Gribushin, V. Klyukhin, O. Kodolova, I. Lokhtin, S. Obraztsov, V. Savrin, A. Snigirev

Novosibirsk State University (NSU), Novosibirsk, Russia
V. Blinov\cmsAuthorMark58, T. Dimova\cmsAuthorMark58, L. Kardapoltsev\cmsAuthorMark58, I. Ovtin\cmsAuthorMark58, Y. Skovpen\cmsAuthorMark58

Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’, Protvino, Russia
I. Azhgirey, I. Bayshev, V. Kachanov, A. Kalinin, D. Konstantinov, V. Petrov, R. Ryutin, A. Sobol, S. Troshin, N. Tyurin, A. Uzunian, A. Volkov

National Research Tomsk Polytechnic University, Tomsk, Russia
A. Babaev, A. Iuzhakov, V. Okhotnikov, L. Sukhikh

Tomsk State University, Tomsk, Russia
V. Borchsh, V. Ivanchenko, E. Tcherniaev

University of Belgrade: Faculty of Physics and VINCA Institute of Nuclear Sciences, Belgrade, Serbia
P. Adzic\cmsAuthorMark59, P. Cirkovic, M. Dordevic, P. Milenovic, J. Milosevic

Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
M. Aguilar-Benitez, J. Alcaraz Maestre, A. Álvarez Fernández, I. Bachiller, M. Barrio Luna, Cristina F. Bedoya, C.A. Carrillo Montoya, M. Cepeda, M. Cerrada, N. Colino, B. De La Cruz, A. Delgado Peris, J.P. Fernández Ramos, J. Flix, M.C. Fouz, A. García Alonso, O. Gonzalez Lopez, S. Goy Lopez, J.M. Hernandez, M.I. Josa, J. León Holgado, D. Moran, Á. Navarro Tobar, A. Pérez-Calero Yzquierdo, J. Puerta Pelayo, I. Redondo, L. Romero, S. Sánchez Navas, M.S. Soares, A. Triossi, L. Urda Gómez, C. Willmott

Universidad Autónoma de Madrid, Madrid, Spain
C. Albajar, J.F. de Trocóniz, R. Reyes-Almanza

Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Oviedo, Spain
B. Alvarez Gonzalez, J. Cuevas, C. Erice, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, E. Palencia Cortezon, C. Ramón Álvarez, J. Ripoll Sau, V. Rodríguez Bouza, S. Sanchez Cruz, A. Trapote

Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
J.A. Brochero Cifuentes, I.J. Cabrillo, A. Calderon, B. Chazin Quero, J. Duarte Campderros, M. Fernandez, P.J. Fernández Manteca, G. Gomez, C. Martinez Rivero, P. Martinez Ruiz del Arbol, F. Matorras, J. Piedra Gomez, C. Prieels, F. Ricci-Tam, T. Rodrigo, A. Ruiz-Jimeno, L. Scodellaro, I. Vila, J.M. Vizan Garcia

University of Colombo, Colombo, Sri Lanka
MK Jayananda, B. Kailasapathy\cmsAuthorMark60, D.U.J. Sonnadara, DDC Wickramarathna

University of Ruhuna, Department of Physics, Matara, Sri Lanka
W.G.D. Dharmaratna, K. Liyanage, N. Perera, N. Wickramage

CERN, European Organization for Nuclear Research, Geneva, Switzerland
T.K. Aarrestad, D. Abbaneo, B. Akgun, E. Auffray, G. Auzinger, J. Baechler, P. Baillon, A.H. Ball, D. Barney, J. Bendavid, N. Beni, M. Bianco, A. Bocci, E. Bossini, E. Brondolin, T. Camporesi, G. Cerminara, L. Cristella, D. d’Enterria, A. Dabrowski, N. Daci, V. Daponte, A. David, A. De Roeck, M. Deile, R. Di Maria, M. Dobson, M. Dünser, N. Dupont, A. Elliott-Peisert, N. Emriskova, F. Fallavollita\cmsAuthorMark61, D. Fasanella, S. Fiorendi, A. Florent, G. Franzoni, J. Fulcher, W. Funk, S. Giani, D. Gigi, K. Gill, F. Glege, L. Gouskos, M. Guilbaud, D. Gulhan, M. Haranko, J. Hegeman, Y. Iiyama, V. Innocente, T. James, P. Janot, J. Kaspar, J. Kieseler, M. Komm, N. Kratochwil, C. Lange, S. Laurila, P. Lecoq, K. Long, C. Lourenço, L. Malgeri, S. Mallios, M. Mannelli, F. Meijers, S. Mersi, E. Meschi, F. Moortgat, M. Mulders, J. Niedziela, S. Orfanelli, L. Orsini, F. Pantaleo\cmsAuthorMark22, L. Pape, E. Perez, M. Peruzzi, A. Petrilli, G. Petrucciani, A. Pfeiffer, M. Pierini, T. Quast, D. Rabady, A. Racz, M. Rieger, M. Rovere, H. Sakulin, J. Salfeld-Nebgen, S. Scarfi, C. Schäfer, C. Schwick, M. Selvaggi, A. Sharma, P. Silva, W. Snoeys, P. Sphicas\cmsAuthorMark62, S. Summers, V.R. Tavolaro, D. Treille, A. Tsirou, G.P. Van Onsem, A. Vartak, M. Verzetti, K.A. Wozniak, W.D. Zeuner

Paul Scherrer Institut, Villigen, Switzerland
L. Caminada\cmsAuthorMark63, W. Erdmann, R. Horisberger, Q. Ingram, H.C. Kaestli, D. Kotlinski, U. Langenegger, T. Rohe

ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
M. Backhaus, P. Berger, A. Calandri, N. Chernyavskaya, A. De Cosa, G. Dissertori, M. Dittmar, M. Donegà, C. Dorfer, T. Gadek, T.A. Gómez Espinosa, C. Grab, D. Hits, W. Lustermann, A.-M. Lyon, R.A. Manzoni, M.T. Meinhard, F. Micheli, F. Nessi-Tedaldi, F. Pauss, V. Perovic, G. Perrin, S. Pigazzini, M.G. Ratti, M. Reichmann, C. Reissel, T. Reitenspiess, B. Ristic, D. Ruini, D.A. Sanz Becerra, M. Schönenberger, V. Stampf, J. Steggemann\cmsAuthorMark64, M.L. Vesterbacka Olsson, R. Wallny, D.H. Zhu

Universität Zürich, Zurich, Switzerland
C. Amsler\cmsAuthorMark65, C. Botta, D. Brzhechko, M.F. Canelli, R. Del Burgo, J.K. Heikkilä, M. Huwiler, A. Jofrehei, B. Kilminster, S. Leontsinis, A. Macchiolo, P. Meiring, V.M. Mikuni, U. Molinatti, I. Neutelings, G. Rauco, A. Reimers, P. Robmann, K. Schweiger, Y. Takahashi

National Central University, Chung-Li, Taiwan
C. Adloff\cmsAuthorMark66, C.M. Kuo, W. Lin, A. Roy, T. Sarkar\cmsAuthorMark38, S.S. Yu

National Taiwan University (NTU), Taipei, Taiwan
L. Ceard, P. Chang, Y. Chao, K.F. Chen, P.H. Chen, W.-S. Hou, Y.y. Li, R.-S. Lu, E. Paganis, A. Psallidas, A. Steen, E. Yazgan

Chulalongkorn University, Faculty of Science, Department of Physics, Bangkok, Thailand
B. Asavapibhop, C. Asawatangtrakuldee, N. Srimanobhas

Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
F. Boran, S. Damarseckin\cmsAuthorMark67, Z.S. Demiroglu, F. Dolek, C. Dozen\cmsAuthorMark68, I. Dumanoglu\cmsAuthorMark69, E. Eskut, G. Gokbulut, Y. Guler, E. Gurpinar Guler\cmsAuthorMark70, I. Hos\cmsAuthorMark71, C. Isik, E.E. Kangal\cmsAuthorMark72, O. Kara, A. Kayis Topaksu, U. Kiminsu, G. Onengut, K. Ozdemir\cmsAuthorMark73, A. Polatoz, A.E. Simsek, B. Tali\cmsAuthorMark74, U.G. Tok, S. Turkcapar, I.S. Zorbakir, C. Zorbilmez

Middle East Technical University, Physics Department, Ankara, Turkey
B. Isildak\cmsAuthorMark75, G. Karapinar\cmsAuthorMark76, K. Ocalan\cmsAuthorMark77, M. Yalvac\cmsAuthorMark78

Bogazici University, Istanbul, Turkey
I.O. Atakisi, E. Gülmez, M. Kaya\cmsAuthorMark79, O. Kaya\cmsAuthorMark80, Ö. Özçelik, S. Tekten\cmsAuthorMark81, E.A. Yetkin\cmsAuthorMark82

Istanbul Technical University, Istanbul, Turkey
A. Cakir, K. Cankocak\cmsAuthorMark69, Y. Komurcu, S. Sen\cmsAuthorMark83

Istanbul University, Istanbul, Turkey
F. Aydogmus Sen, S. Cerci\cmsAuthorMark74, B. Kaynak, S. Ozkorucuklu, D. Sunar Cerci\cmsAuthorMark74

Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkov, Ukraine
B. Grynyov

National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine
L. Levchuk

University of Bristol, Bristol, United Kingdom
E. Bhal, S. Bologna, J.J. Brooke, E. Clement, D. Cussans, H. Flacher, J. Goldstein, G.P. Heath, H.F. Heath, L. Kreczko, B. Krikler, S. Paramesvaran, T. Sakuma, S. Seif El Nasr-Storey, V.J. Smith, N. Stylianou\cmsAuthorMark84, J. Taylor, A. Titterton

Rutherford Appleton Laboratory, Didcot, United Kingdom
K.W. Bell, A. Belyaev\cmsAuthorMark85, C. Brew, R.M. Brown, D.J.A. Cockerill, K.V. Ellis, K. Harder, S. Harper, J. Linacre, K. Manolopoulos, D.M. Newbold, E. Olaiya, D. Petyt, T. Reis, T. Schuh, C.H. Shepherd-Themistocleous, A. Thea, I.R. Tomalin, T. Williams

Imperial College, London, United Kingdom
R. Bainbridge, P. Bloch, S. Bonomally, J. Borg, S. Breeze, O. Buchmuller, A. Bundock, V. Cepaitis, G.S. Chahal\cmsAuthorMark86, D. Colling, P. Dauncey, G. Davies, M. Della Negra, G. Fedi, G. Hall, G. Iles, J. Langford, L. Lyons, A.-M. Magnan, S. Malik, A. Martelli, V. Milosevic, J. Nash\cmsAuthorMark87, V. Palladino, M. Pesaresi, D.M. Raymond, A. Richards, A. Rose, E. Scott, C. Seez, A. Shtipliyski, M. Stoye, A. Tapper, K. Uchida, T. Virdee\cmsAuthorMark22, N. Wardle, S.N. Webb, D. Winterbottom, A.G. Zecchinelli

Brunel University, Uxbridge, United Kingdom
J.E. Cole, P.R. Hobson, A. Khan, P. Kyberd, C.K. Mackay, I.D. Reid, L. Teodorescu, S. Zahid

Baylor University, Waco, USA
S. Abdullin, A. Brinkerhoff, K. Call, B. Caraway, J. Dittmann, K. Hatakeyama, A.R. Kanuganti, C. Madrid, B. McMaster, N. Pastika, S. Sawant, C. Smith, J. Wilson

Catholic University of America, Washington, DC, USA
R. Bartek, A. Dominguez, R. Uniyal, A.M. Vargas Hernandez

The University of Alabama, Tuscaloosa, USA
A. Buccilli, O. Charaf, S.I. Cooper, S.V. Gleyzer, C. Henderson, C.U. Perez, P. Rumerio, C. West

Boston University, Boston, USA
A. Akpinar, A. Albert, D. Arcaro, C. Cosby, Z. Demiragli, D. Gastler, J. Rohlf, K. Salyer, D. Sperka, D. Spitzbart, I. Suarez, S. Yuan, D. Zou

Brown University, Providence, USA
G. Benelli, B. Burkle, X. Coubez\cmsAuthorMark23, D. Cutts, Y.t. Duh, M. Hadley, U. Heintz, J.M. Hogan\cmsAuthorMark88, K.H.M. Kwok, E. Laird, G. Landsberg, K.T. Lau, J. Lee, M. Narain, S. Sagir\cmsAuthorMark89, R. Syarif, E. Usai, W.Y. Wong, D. Yu, W. Zhang

University of California, Davis, Davis, USA
R. Band, C. Brainerd, R. Breedon, M. Calderon De La Barca Sanchez, M. Chertok, J. Conway, R. Conway, P.T. Cox, R. Erbacher, C. Flores, G. Funk, F. Jensen, W. Ko${}^{\textrm{\textdagger}}$, O. Kukral, R. Lander, M. Mulhearn, D. Pellett, J. Pilot, M. Shi, D. Taylor, K. Tos, M. Tripathi, Y. Yao, F. Zhang

University of California, Los Angeles, USA
M. Bachtis, R. Cousins, A. Dasgupta, D. Hamilton, J. Hauser, M. Ignatenko, M.A. Iqbal, T. Lam, N. Mccoll, W.A. Nash, S. Regnard, D. Saltzberg, C. Schnaible, B. Stone, V. Valuev

University of California, Riverside, Riverside, USA
K. Burt, Y. Chen, R. Clare, J.W. Gary, G. Hanson, G. Karapostoli, O.R. Long, N. Manganelli, M. Olmedo Negrete, M.I. Paneva, W. Si, S. Wimpenny, Y. Zhang

University of California, San Diego, La Jolla, USA
J.G. Branson, P. Chang, S. Cittolin, S. Cooperstein, N. Deelen, J. Duarte, R. Gerosa, D. Gilbert, V. Krutelyov, J. Letts, M. Masciovecchio, S. May, S. Padhi, M. Pieri, V. Sharma, M. Tadel, F. Würthwein, A. Yagil

University of California, Santa Barbara - Department of Physics, Santa Barbara, USA
N. Amin, C. Campagnari, M. Citron, A. Dorsett, V. Dutta, J. Incandela, B. Marsh, H. Mei, A. Ovcharova, H. Qu, M. Quinnan, J. Richman, U. Sarica, D. Stuart, S. Wang

California Institute of Technology, Pasadena, USA
A. Bornheim, O. Cerri, I. Dutta, J.M. Lawhorn, N. Lu, J. Mao, H.B. Newman, J. Ngadiuba, T.Q. Nguyen, J. Pata, M. Spiropulu, J.R. Vlimant, C. Wang, S. Xie, Z. Zhang, R.Y. Zhu

Carnegie Mellon University, Pittsburgh, USA
J. Alison, M.B. Andrews, T. Ferguson, T. Mudholkar, M. Paulini, M. Sun, I. Vorobiev

University of Colorado Boulder, Boulder, USA
J.P. Cumalat, W.T. Ford, E. MacDonald, T. Mulholland, R. Patel, A. Perloff, K. Stenson, K.A. Ulmer, S.R. Wagner

Cornell University, Ithaca, USA
J. Alexander, Y. Cheng, J. Chu, D.J. Cranshaw, A. Datta, A. Frankenthal, K. Mcdermott, J. Monroy, J.R. Patterson, D. Quach, A. Ryd, W. Sun, S.M. Tan, Z. Tao, J. Thom, P. Wittich, M. Zientek

Fermi National Accelerator Laboratory, Batavia, USA
M. Albrow, M. Alyari, G. Apollinari, A. Apresyan, A. Apyan, S. Banerjee, L.A.T. Bauerdick, A. Beretvas, D. Berry, J. Berryhill, P.C. Bhat, K. Burkett, J.N. Butler, A. Canepa, G.B. Cerati, H.W.K. Cheung, F. Chlebana, M. Cremonesi, V.D. Elvira, J. Freeman, Z. Gecse, E. Gottschalk, L. Gray, D. Green, S. Grünendahl, O. Gutsche, R.M. Harris, S. Hasegawa, R. Heller, T.C. Herwig, J. Hirschauer, B. Jayatilaka, S. Jindariani, M. Johnson, U. Joshi, P. Klabbers, T. Klijnsma, B. Klima, M.J. Kortelainen, S. Lammel, D. Lincoln, R. Lipton, M. Liu, T. Liu, J. Lykken, K. Maeshima, D. Mason, P. McBride, P. Merkel, S. Mrenna, S. Nahn, V. O’Dell, V. Papadimitriou, K. Pedro, C. Pena\cmsAuthorMark57, O. Prokofyev, F. Ravera, A. Reinsvold Hall, L. Ristori, B. Schneider, E. Sexton-Kennedy, N. Smith, A. Soha, W.J. Spalding, L. Spiegel, S. Stoynev, J. Strait, L. Taylor, S. Tkaczyk, N.V. Tran, L. Uplegger, E.W. Vaandering, H.A. Weber, A. Woodard

University of Florida, Gainesville, USA
D. Acosta, P. Avery, D. Bourilkov, L. Cadamuro, V. Cherepanov, F. Errico, R.D. Field, D. Guerrero, B.M. Joshi, M. Kim, J. Konigsberg, A. Korytov, K.H. Lo, K. Matchev, N. Menendez, G. Mitselmakher, D. Rosenzweig, K. Shi, J. Sturdy, J. Wang, S. Wang, X. Zuo

Florida State University, Tallahassee, USA
T. Adams, A. Askew, D. Diaz, R. Habibullah, S. Hagopian, V. Hagopian, K.F. Johnson, R. Khurana, T. Kolberg, G. Martinez, H. Prosper, C. Schiber, R. Yohay, J. Zhang

Florida Institute of Technology, Melbourne, USA
M.M. Baarmand, S. Butalla, T. Elkafrawy\cmsAuthorMark14, M. Hohlmann, D. Noonan, M. Rahmani, M. Saunders, F. Yumiceva

University of Illinois at Chicago (UIC), Chicago, USA
M.R. Adams, L. Apanasevich, H. Becerril Gonzalez, R. Cavanaugh, X. Chen, S. Dittmer, O. Evdokimov, C.E. Gerber, D.A. Hangal, D.J. Hofman, C. Mills, G. Oh, T. Roy, M.B. Tonjes, N. Varelas, J. Viinikainen, X. Wang, Z. Wu, Z. Ye

The University of Iowa, Iowa City, USA
M. Alhusseini, K. Dilsiz\cmsAuthorMark90, S. Durgut, R.P. Gandrajula, M. Haytmyradov, V. Khristenko, O.K. Köseyan, J.-P. Merlo, A. Mestvirishvili\cmsAuthorMark91, A. Moeller, J. Nachtman, H. Ogul\cmsAuthorMark92, Y. Onel, F. Ozok\cmsAuthorMark93, A. Penzo, C. Snyder, E. Tiras, J. Wetzel

Johns Hopkins University, Baltimore, USA
O. Amram, B. Blumenfeld, L. Corcodilos, M. Eminizer, A.V. Gritsan, S. Kyriacou, P. Maksimovic, C. Mantilla, J. Roskes, M. Swartz, T.Á. Vámi

The University of Kansas, Lawrence, USA
C. Baldenegro Barrera, P. Baringer, A. Bean, A. Bylinkin, T. Isidori, S. Khalil, J. King, G. Krintiras, A. Kropivnitskaya, C. Lindsey, N. Minafra, M. Murray, C. Rogan, C. Royon, S. Sanders, E. Schmitz, J.D. Tapia Takaki, Q. Wang, J. Williams, G. Wilson

Kansas State University, Manhattan, USA
S. Duric, A. Ivanov, K. Kaadze, D. Kim, Y. Maravin, T. Mitchell, A. Modak, A. Mohammadi

Lawrence Livermore National Laboratory, Livermore, USA
F. Rebassoo, D. Wright

University of Maryland, College Park, USA
E. Adams, A. Baden, O. Baron, A. Belloni, S.C. Eno, Y. Feng, N.J. Hadley, S. Jabeen, G.Y. Jeng, R.G. Kellogg, T. Koeth, A.C. Mignerey, S. Nabili, M. Seidel, A. Skuja, S.C. Tonwar, L. Wang, K. Wong

Massachusetts Institute of Technology, Cambridge, USA
D. Abercrombie, B. Allen, R. Bi, S. Brandt, W. Busza, I.A. Cali, Y. Chen, M. D’Alfonso, G. Gomez Ceballos, M. Goncharov, P. Harris, D. Hsu, M. Hu, M. Klute, D. Kovalskyi, J. Krupa, Y.-J. Lee, P.D. Luckey, B. Maier, A.C. Marini, C. Mcginn, C. Mironov, S. Narayanan, X. Niu, C. Paus, D. Rankin, C. Roland, G. Roland, Z. Shi, G.S.F. Stephans, K. Sumorok, K. Tatar, D. Velicanu, J. Wang, T.W. Wang, Z. Wang, B. Wyslouch

University of Minnesota, Minneapolis, USA
R.M. Chatterjee, A. Evans, P. Hansen, J. Hiltbrand, Sh. Jain, M. Krohn, Y. Kubota, Z. Lesko, J. Mans, M. Revering, R. Rusack, R. Saradhy, N. Schroeder, N. Strobbe, M.A. Wadud

University of Mississippi, Oxford, USA
J.G. Acosta, S. Oliveros

University of Nebraska-Lincoln, Lincoln, USA
K. Bloom, S. Chauhan, D.R. Claes, C. Fangmeier, L. Finco, F. Golf, J.R. González Fernández, C. Joo, I. Kravchenko, J.E. Siado, G.R. Snow${}^{\textrm{\textdagger}}$, W. Tabb, F. Yan

State University of New York at Buffalo, Buffalo, USA
G. Agarwal, H. Bandyopadhyay, C. Harrington, L. Hay, I. Iashvili, A. Kharchilava, C. McLean, D. Nguyen, J. Pekkanen, S. Rappoccio, B. Roozbahani

Northeastern University, Boston, USA
G. Alverson, E. Barberis, C. Freer, Y. Haddad, A. Hortiangtham, J. Li, G. Madigan, B. Marzocchi, D.M. Morse, V. Nguyen, T. Orimoto, A. Parker, L. Skinnari, A. Tishelman-Charny, T. Wamorkar, B. Wang, A. Wisecarver, D. Wood

Northwestern University, Evanston, USA
S. Bhattacharya, J. Bueghly, Z. Chen, A. Gilbert, T. Gunter, K.A. Hahn, N. Odell, M.H. Schmitt, K. Sung, M. Velasco

University of Notre Dame, Notre Dame, USA
R. Bucci, N. Dev, R. Goldouzian, M. Hildreth, K. Hurtado Anampa, C. Jessop, D.J. Karmgard, K. Lannon, N. Loukas, N. Marinelli, I. Mcalister, F. Meng, K. Mohrman, Y. Musienko\cmsAuthorMark49, R. Ruchti, P. Siddireddy, S. Taroni, M. Wayne, A. Wightman, M. Wolf, L. Zygala

The Ohio State University, Columbus, USA
J. Alimena, B. Bylsma, B. Cardwell, L.S. Durkin, B. Francis, C. Hill, A. Lefeld, B.L. Winer, B.R. Yates

Princeton University, Princeton, USA
B. Bonham, P. Das, G. Dezoort, A. Dropulic, P. Elmer, B. Greenberg, N. Haubrich, S. Higginbotham, A. Kalogeropoulos, G. Kopp, S. Kwan, D. Lange, M.T. Lucchini, J. Luo, D. Marlow, K. Mei, I. Ojalvo, J. Olsen, C. Palmer, P. Piroué, D. Stickland, C. Tully

University of Puerto Rico, Mayaguez, USA
S. Malik, S. Norberg

Purdue University, West Lafayette, USA
V.E. Barnes, R. Chawla, S. Das, L. Gutay, M. Jones, A.W. Jung, G. Negro, N. Neumeister, C.C. Peng, S. Piperov, A. Purohit, H. Qiu, J.F. Schulte, M. Stojanovic\cmsAuthorMark18, N. Trevisani, F. Wang, A. Wildridge, R. Xiao, W. Xie

Purdue University Northwest, Hammond, USA
J. Dolen, N. Parashar

Rice University, Houston, USA
A. Baty, S. Dildick, K.M. Ecklund, S. Freed, F.J.M. Geurts, M. Kilpatrick, A. Kumar, W. Li, B.P. Padley, R. Redjimi, J. Roberts${}^{\textrm{\textdagger}}$, J. Rorie, W. Shi, A.G. Stahl Leiton

University of Rochester, Rochester, USA
A. Bodek, P. de Barbaro, R. Demina, J.L. Dulemba, C. Fallon, T. Ferbel, M. Galanti, A. Garcia-Bellido, O. Hindrichs, A. Khukhunaishvili, E. Ranken, R. Taus

Rutgers, The State University of New Jersey, Piscataway, USA
B. Chiarito, J.P. Chou, A. Gandrakota, Y. Gershtein, E. Halkiadakis, A. Hart, M. Heindl, E. Hughes, S. Kaplan, O. Karacheban\cmsAuthorMark26, I. Laflotte, A. Lath, R. Montalvo, K. Nash, M. Osherson, S. Salur, S. Schnetzer, S. Somalwar, R. Stone, S.A. Thayil, S. Thomas, H. Wang

University of Tennessee, Knoxville, USA
H. Acharya, A.G. Delannoy, S. Spanier

Texas A&M University, College Station, USA
O. Bouhali\cmsAuthorMark94, M. Dalchenko, A. Delgado, R. Eusebi, J. Gilmore, T. Huang, T. Kamon\cmsAuthorMark95, H. Kim, S. Luo, S. Malhotra, R. Mueller, D. Overton, L. Perniè, D. Rathjens, A. Safonov

Texas Tech University, Lubbock, USA
N. Akchurin, J. Damgov, V. Hegde, S. Kunori, K. Lamichhane, S.W. Lee, T. Mengke, S. Muthumuni, T. Peltola, S. Undleeb, I. Volobouev, Z. Wang, A. Whitbeck

Vanderbilt University, Nashville, USA
E. Appelt, S. Greene, A. Gurrola, R. Janjam, W. Johns, C. Maguire, A. Melo, H. Ni, K. Padeken, F. Romeo, P. Sheldon, S. Tuo, J. Velkovska

University of Virginia, Charlottesville, USA
M.W. Arenton, B. Cox, G. Cummings, J. Hakala, R. Hirosky, M. Joyce, A. Ledovskoy, A. Li, C. Neu, B. Tannenwald, Y. Wang, E. Wolfe, F. Xia

Wayne State University, Detroit, USA
P.E. Karchin, N. Poudyal, P. Thapa

University of Wisconsin - Madison, Madison, WI, USA
K. Black, T. Bose, J. Buchanan, C. Caillol, S. Dasu, I. De Bruyn, P. Everaerts, C. Galloni, H. He, M. Herndon, A. Hervé, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless, J. Madhusudanan Sreekala, A. Mallampalli, D. Pinna, A. Savin, V. Shang, V. Sharma, W.H. Smith, D. Teague, S. Trembath-reichert, W. Vetens

†: Deceased
1: Also at Vienna University of Technology, Vienna, Austria
2: Also at Institute of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
3: Also at Université Libre de Bruxelles, Bruxelles, Belgium
4: Also at IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
5: Also at Universidade Estadual de Campinas, Campinas, Brazil
6: Also at Federal University of Rio Grande do Sul, Porto Alegre, Brazil
7: Also at UFMS, Nova Andradina, Brazil
8: Also at Universidade Federal de Pelotas, Pelotas, Brazil
9: Also at Nanjing Normal University Department of Physics, Nanjing, China
10: Now at The University of Iowa, Iowa City, USA
11: Also at University of Chinese Academy of Sciences, Beijing, China
12: Also at Institute for Theoretical and Experimental Physics named by A.I. Alikhanov of NRC ‘Kurchatov Institute’, Moscow, Russia
13: Also at Joint Institute for Nuclear Research, Dubna, Russia
14: Also at Ain Shams University, Cairo, Egypt
15: Also at Zewail City of Science and Technology, Zewail, Egypt
16: Also at British University in Egypt, Cairo, Egypt
17: Now at Fayoum University, El-Fayoum, Egypt
18: Also at Purdue University, West Lafayette, USA
19: Also at Université de Haute Alsace, Mulhouse, France
20: Also at Ilia State University, Tbilisi, Georgia
21: Also at Erzincan Binali Yildirim University, Erzincan, Turkey
22: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland
23: Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
24: Also at University of Hamburg, Hamburg, Germany
25: Also at Department of Physics, Isfahan University of Technology, Isfahan, Iran, Isfahan, Iran
26: Also at Brandenburg University of Technology, Cottbus, Germany
27: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia
28: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary, Debrecen, Hungary
29: Also at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt
30: Also at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary, Budapest, Hungary
31: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary
32: Also at Wigner Research Centre for Physics, Budapest, Hungary
33: Also at IIT Bhubaneswar, Bhubaneswar, India, Bhubaneswar, India
34: Also at Institute of Physics, Bhubaneswar, India
35: Also at G.H.G. Khalsa College, Punjab, India
36: Also at Shoolini University, Solan, India
37: Also at University of Hyderabad, Hyderabad, India
38: Also at University of Visva-Bharati, Santiniketan, India
39: Also at Indian Institute of Technology (IIT), Mumbai, India
40: Also at Deutsches Elektronen-Synchrotron, Hamburg, Germany
41: Also at Sharif University of Technology, Tehran, Iran
42: Also at Department of Physics, University of Science and Technology of Mazandaran, Behshahr, Iran
43: Now at INFN Sezione di Bari ^a, Università di Bari ^b, Politecnico di Bari ^c, Bari, Italy
44: Also at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy
45: Also at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy
46: Also at Università di Napoli ’Federico II’, NAPOLI, Italy
47: Also at Riga Technical University, Riga, Latvia, Riga, Latvia
48: Also at Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico
49: Also at Institute for Nuclear Research, Moscow, Russia
50: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia
51: Also at Institute of Nuclear Physics of the Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
52: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia
53: Also at University of Florida, Gainesville, USA
54: Also at Imperial College, London, United Kingdom
55: Also at P.N. Lebedev Physical Institute, Moscow, Russia
56: Also at Moscow Institute of Physics and Technology, Moscow, Russia, Moscow, Russia
57: Also at California Institute of Technology, Pasadena, USA
58: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia
59: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia
60: Also at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka
61: Also at INFN Sezione di Pavia ^a, Università di Pavia ^b, Pavia, Italy, Pavia, Italy
62: Also at National and Kapodistrian University of Athens, Athens, Greece
63: Also at Universität Zürich, Zurich, Switzerland
64: Also at Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland
65: Also at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria, Vienna, Austria
66: Also at Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France
67: Also at Şırnak University, Sirnak, Turkey
68: Also at Department of Physics, Tsinghua University, Beijing, China, Beijing, China
69: Also at Near East University, Research Center of Experimental Health Science, Nicosia, Turkey
70: Also at Beykent University, Istanbul, Turkey, Istanbul, Turkey
71: Also at Istanbul Aydin University, Application and Research Center for Advanced Studies (App. & Res. Cent. for Advanced Studies), Istanbul, Turkey
72: Also at Mersin University, Mersin, Turkey
73: Also at Piri Reis University, Istanbul, Turkey
74: Also at Adiyaman University, Adiyaman, Turkey
75: Also at Ozyegin University, Istanbul, Turkey
76: Also at Izmir Institute of Technology, Izmir, Turkey
77: Also at Necmettin Erbakan University, Konya, Turkey
78: Also at Bozok Universitetesi Rektörlügü, Yozgat, Turkey
79: Also at Marmara University, Istanbul, Turkey
80: Also at Milli Savunma University, Istanbul, Turkey
81: Also at Kafkas University, Kars, Turkey
82: Also at Istanbul Bilgi University, Istanbul, Turkey
83: Also at Hacettepe University, Ankara, Turkey
84: Also at Vrije Universiteit Brussel, Brussel, Belgium
85: Also at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom
86: Also at IPPP Durham University, Durham, United Kingdom
87: Also at Monash University, Faculty of Science, Clayton, Australia
88: Also at Bethel University, St. Paul, Minneapolis, USA, St. Paul, USA
89: Also at Karamanoğlu Mehmetbey University, Karaman, Turkey
90: Also at Bingol University, Bingol, Turkey
91: Also at Georgian Technical University, Tbilisi, Georgia
92: Also at Sinop University, Sinop, Turkey
93: Also at Mimar Sinan University, Istanbul, Istanbul, Turkey
94: Also at Texas A&M University at Qatar, Doha, Qatar
95: Also at Kyungpook National University, Daegu, Korea, Daegu, Korea