Charged-particle angular correlations in XeXe collisions at $\sqrt{s_{_\mathrm{NN}}} =$ 5.44 TeV

TL;DR

This paper investigates azimuthal charged-particle correlations in xenon-xenon collisions at 5.44 TeV, comparing results with lead-lead data and hydrodynamic models to better understand the collective behavior in heavy ion collisions.

Contribution

It provides the first detailed measurement of azimuthal anisotropy coefficients in XeXe collisions at the LHC, offering new insights into initial-state fluctuations and collective flow.

Findings

Measured $v_2$, $v_3$, $v_4$ coefficients in XeXe collisions.

Compared XeXe results with PbPb data and hydrodynamic models.

Constraints on hydrodynamic descriptions of heavy ion collisions.

Abstract

Azimuthal correlations of charged particles in xenon-xenon collisions at a center-of-mass energy per nucleon pair of $ \sqrt{s_{_\mathrm{NN}}} =$ 5.44 TeV are studied. The data were collected by the CMS experiment at the LHC with a total integrated luminosity of 3.42 $\mu$b$^{-1}$. The collective motion of the system formed in the collision is parameterized by a Fourier expansion of the azimuthal particle density distribution. The azimuthal anisotropy coefficients $v_{2}$, $v_{3}$, and $v_{4}$ are obtained by the scalar-product, two-particle correlation, and multiparticle correlation methods. Within a hydrodynamic picture, these methods have different sensitivities to non-collective and fluctuation effects. The dependence of the Fourier coefficients on the size of the colliding system is explored by comparing the xenon-xenon results with equivalent lead-lead data. Model calculations that include initial-state fluctuation effects are also compared to the experimental results. The observed angular correlations provide new constraints on the hydrodynamic description of heavy ion collisions.

Figures

Equations

$$\frac{2\pi }{N}\frac{\text{rd}N}{\text{rd}\varphi }=1+\sum _{n=1}^{\infty }2v_n\cos [n(\varphi -{\Psi }_n)],$$

$${\vec{Q}}_n=\left(\sum _i^M{w}_i\cos \left(n{\varphi }_i\right)-⟨\sum _i^M{w}_i\cos \left(n{\varphi }_i\right)⟩,\sum _i^M{w}_i\sin \left(n{\varphi }_i\right)-⟨\sum _i^M{w}_i\sin \left(n{\varphi }_i\right)⟩\right).$$

$$v_n\left\{\mathrm{SP}\right\}\equiv \frac{⟨Q_n{Q}_{nA}^{\ast }⟩}{\sqrt{\frac{⟨Q_{nA}{Q}_{nB}^{\ast }⟩⟨Q_{nA}{Q}_{nC}^{\ast }⟩}{⟨Q_{nB}{Q}_{nC}^{\ast }⟩}}}.$$

Full text

0.1 Introduction

At sufficiently high temperatures or densities, lattice quantum chromodynamics predicts a transition from ordinary hadronic matter to a state of deconfined quarks and gluons, the so-called quark gluon plasma (QGP) (see, e.g., Ref. [1]). The QGP state can be reached through relativistic heavy ion collisions, where the collective behavior of the created medium manifests itself in azimuthal correlations among the emitted particles. These correlations have been studied in gold-gold collisions at the BNL RHIC [2, 3, 4, 5], lead-lead (PbPb) collisions at the CERN LHC  [6, 7, 8], as well as in collisions involving lighter nuclei, such as the copper-copper system studied at RHIC [9, 10]. More recently, collective behavior similar to that observed in collisions of heavy nuclei has also been found in high-multiplicity events produced in the proton-lead ($\Pp\text{Pb}$) system, and in proton-proton ($\Pp\Pp$) collisions [11, 12, 13, 14]. The results from these small systems raise the question as to how the size of the colliding system affects the onset of QGP formation. Measurements from xenon-xenon (XeXe) collisions, as presented here, bridge the gap between the small ($\Pp\Pp$ and $\Pp\text{Pb}$) and large (PbPb) systems previously studied at LHC energies.

Anisotropic flow can be characterized by a Fourier expansion [15, 16, 17],

[TABLE]

where ${\rd N}/{\rd\phi}$ is the azimuthal particle density and $\phi$ is the particle azimuthal angle with respect to a reference angle $\Psi_{n}$. Different reference angles can be defined. The “participant plane” angle is the direction of the semiminor axis of the region perpendicular to the beam direction spanned by the nucleons that undergo a primary interaction. The “event-plane” angle is defined by the direction perpendicular to the beam direction of the maximum outgoing particle density. In this paper the measured anisotropies are expressed in terms of the event-plane reference angle. Averaged over many events, the anisotropies measured with respect to the event plane are expected to be similar to those that would be obtained if it were possible to determine the actual participant plane.

The magnitude of the azimuthal anisotropy is characterized by the Fourier coefficients $v_{n}$. The second- and third-order Fourier coefficients are referred to as “elliptic” ($v_{2}$) and “triangular” ($v_{3}$) flow, respectively. The former reflects the lenticular shape of the collision overlap region, as well as initial-state fluctuations in the positions of nucleons at the moment of impact [18]. The latter is largely a consequence of fluctuations. While the $v_{2}$ and $v_{3}$ harmonics are believed to reflect the initial-state geometry [19], for $n\geq 4$ the flow harmonics are also strongly affected by the dynamics of the system expansion. Hence, studying both the lower and higher flow harmonics is important for understanding the medium created in heavy ion collisions.

This analysis presents measurements of the charged-particle collective flow in XeXe collisions at a center-of-mass energy per nucleon pair of $\sqrtsNN=5.44\TeV$. The results are shown as functions of transverse momentum, \pt, for the pseudorapidity region $\abs{\eta}<2.4$ and for different collision overlap geometries. Spectrum-weighted values with $0.3<\pt<3.0\GeVc$, with the efficiency-corrected yield in each $\pt$ interval used as the weight, are also presented. The Fourier coefficients $v_{2}$, $v_{3}$, and $v_{4}$ are obtained by two-particle correlations ($v_{n}\{2\}$), the scalar-product method ($v_{n}\{{\mathrm{SP}}\}$), and multiparticle cumulant analyses ($v_{n}\{m\}$, $m$ = 4, 6, and 8).

Event-by-event fluctuations in the spatial overlap geometry lead to method-dependent differences in the extracted $v_{n}$ values [20, 21]. The fluctuations cause an increase in the deduced $v_{n}$ values found using two-particle correlations and the scalar-product method, as compared to the corresponding participant plane value, while the four-particle cumulant $v_{n}$ results are decreased. For fluctuations that follow a two-dimensional Gaussian behavior, the flow harmonics based on more than four particles are expected to be the same as the four-particle correlations results. Deviations from this common behavior can be used to estimate the higher-order moments of the fluctuation distribution. Comparison of flow coefficients measured by different methods probes the initial-state conditions.

The XeXe values are compared to the results from PbPb collisions at $\sqrtsNN=5.02\TeV$. The comparison with measurements from different collision systems, but with similar collision geometry, can give insight to the system size dependence of the anisotropic flow [22]. Theoretical predictions are compared to the observed system size dependence of the flow harmonics. The results presented here provide new information on the initial-state geometry and its fluctuations, as well as the system size dependence of the medium properties.

0.2 CMS detector

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 (HCAL), each composed of a barrel and two endcap sections. Forward calorimeters extend the pseudorapidity coverage provided by the barrel and endcap detectors. Muons are detected in gas-ionization chambers embedded in the steel flux-return yoke outside the solenoid. The hadron forward (HF) calorimeter uses steel as an absorber and quartz fibers as the sensitive material. The two HF calorimeters are located 11.2\unitm from the interaction region, one on each end, and together they provide coverage in the range $3.0<\abs{\eta}<5.2$. These calorimeters serve as luminosity monitors, are used to establish the event centrality, and provide the event-plane information for the scalar-product analysis. The HF calorimeters are azimuthally subdivided into $20^{\circ}$ modular wedges and further segmented to form $0.175\times 10^{\circ}(\Delta\eta\times\Delta\phi$) towers. The silicon tracker measures charged particles within the pseudorapidity range $\abs{\eta}<2.5$. For nonisolated particles of $1<\pt<10\GeV/c$ and $\abs{\eta}<1.4$, the track resolutions are typically 1.5% in \ptand 25–90 (45–150)\mumin the transverse (longitudinal) impact parameter [23]. A more detailed description of the CMS detector, together with a definition of the coordinate system used and the relevant kinematic variables, can be found in Ref. [24]. The detailed Monte-Carlo (MC) simulation of the CMS detector response is based on \GEANTfour [25].

0.3 Events and track selection

Results based on data recorded by CMS during the LHC runs with XeXe collisions at $\sqrtsNN=5.44$\TeVin 2017, with an integrated luminosity of $3.42\mubinv$, are compared to similar data obtained in 2015 from PbPb collisions at $\sqrtsNN=5.02\TeV$ with an integrated luminosity of $26\mubinv$. In both systems, only tracks with $\abs{\eta}<2.4$ and $0.3<\pt\ <10.0\GeVc$ are used.

For the XeXe events, a hardware level (level-1) trigger required at least one tower of the HF calorimeters to be above a threshold that was fixed to maximize the number of events counted, while keeping low the noise contamination from electromagnetic scattering and from pileup (i.e., multiple interactions in the same or neighboring bunch crossings). This trigger also required the presence of both colliding bunches at the interaction point. The average online pileup fraction was 0.018 per event. In addition, a high-level trigger was applied that required at least one track in the pixel detector. Events are further selected offline by requiring at least 3\GeVof energy being detected in each of three HF calorimeter towers on either side of the CMS detector and to have a reconstructed primary vertex, containing at least two tracks, located within 15\unitcm of the nominal collision point along the beam axis and within 0.2\unitcm in the transverse direction. In addition, contamination from beam-gas interactions are suppressed by applying a filter where, for each event with more than ten tracks, at least 25% of the tracks are required to satisfy a high purity [23] track quality criteria. The event selection efficiency is 95%. The track reconstruction algorithm is similar to that used for $\Pp\Pp$ collisions [23].

For PbPb collisions, as compared to XeXe events, there is an additional level-1 trigger requirement of a coincidence between signals in the HF calorimeters on either side of the CMS detector. While offline event selection is similar for PbPb and XeXe events, for the PbPb events the filter to suppress beam-gas interaction is not applied and pileup contamination is controlled by following the procedure outlined in [26].

To ease the computational load for high-multiplicity central PbPb collisions, track reconstruction for PbPb events is done in two iterations. The first iteration reconstructs tracks from signals (“hits”) in the silicon pixel and strip detectors compatible with a trajectory of $\pt>0.9\GeVc$. The second iteration reconstructs tracks compatible with a trajectory of $\pt>0.2\GeVc$ using solely the pixel detector. In the final analysis, the first iteration tracks with $\pt>1.0\GeVc$ are combined with pixel-detector-only tracks with $\pt<2.4\GeVc$, after removing duplicates.

In this paper only tracks from primary charged particles are considered. For the XeXe tracks and the PbPb tracks with both silicon pixel and strip hits, the impact parameter significance of the tracks with respect to the primary vertex in both the beam direction ($d_{Z}$) and the transverse plane ($d_{0}$) must be less than three standard deviations, while the relative \ptuncertainty ($\sigma_{\pt}/\pt$) must be below 10%. In addition, each track is required to have at least 11 hits in the tracker, and the chi-square per degree of freedom, associated with fitting the track trajectory, normalized to the total number of layers with hits along the trajectory, $\chi^{2}/\mathrm{dof}/\mathrm{layers}$, must be less than 0.15. For the PbPb pixel-only tracks, it was required that $d_{Z}$ be less than eight standard deviations and that $\chi^{2}/\mathrm{dof}/\mathrm{layers}<12$.

0.4 Analysis techniques

The analysis techniques used in this study are fully described in previous CMS publications. A two-particle correlation analysis, as discussed in Refs. [27, 28], is performed for both the XeXe and PbPb data sets. In addition, scalar-product and multiparticle cumulant analyses, as described in Ref. [29], are done for the XeXe data.

In the two-particle correlation analyses, a charged particle from one transverse momentum interval is used as a “trigger” particle, to be paired with all of the remaining charged particles from either the same or a different $\pt$ interval, the “associated” particles. For a given trigger particle, the pairing is done in bins of pseudorapidity and azimuthal angle $(\Delta\eta,\Delta\phi)$. A similar pairing between the particles randomly chosen from two different events is done to establish a background distribution. A Fourier analysis of the azimuthal correlation between the trigger and associated particles leads to $V_{n\Delta}$ Fourier coefficients, where $n$ is the Fourier order. If factorization is assumed, the two-particle coefficients can be expressed in terms of single-particle coefficients, with $V_{n\Delta}(\pt^{\text{trig}},\pt^{\text{assoc}})=v_{n}\{2\}(\pt^{\text{trig}})v_{n}\{2\}(\pt^{\text{assoc}})$. The $v_{n}(\pt^{\text{assoc}})$ term is given by $\sqrt{V_{n\Delta}(\pt^{\text{assoc}},\pt^{\text{assoc}})}$, thereby allowing $v_{n}(\pt^{\text{trig}})$ to be determined.

In order to minimize statistical uncertainties, the associated particles are taken from a wide \ptrange with large average anisotropic flow. In this analysis, $1.0<\pt^{\text{assoc}}<3.0\GeVc$. To avoid short-range, nonflow correlations, a pseudorapidity gap of $\abs{\Delta\eta}>2$ is required for the particle pairs.

The scalar-product event-plane measurements are based on recentered flow $Q$ vectors, defined as:

[TABLE]

Here, $w_{i}$ is a weight for the $i$th particle emitted at azimuthal angle $\phi_{i}$. The summations are over the number of particles $M$ within a given (centrality, $\eta$ range, $\pt$ range) analysis bin for a given event. The averages indicated by the angular brackets are taken over all particles in all events within each analysis bin. These averages correspond to the recentering operation and are needed to minimize detector acceptance effects. If the $Q$ vectors are presented as the corresponding complex scalars, the flow coefficients are given by

[TABLE]

The particles of interest are used to obtain the $Q_{n}$ vector, with unit weighting ($w_{i}=1$) in the sum. The subscripts $A$, $B$, and $C$ refer to three separate reference vectors established in different $\eta$ regions. The product of $Q_{n}$ with the $Q_{nA}$ reference vector correlates the particles of interest with particles detected in the HF calorimeter (region A). For the current measurement particles of interest with $-0.8<\eta<0.0$ ($0.0<\eta<0.8$) and within different \ptranges are correlated with HF particles in the range $3<\eta<5$ ($-5<\eta<-3$). The products with $Q$-vectors $B$ and $C$ are used to correct for finite resolution effects. The $Q_{nC}$ vector corresponds to particles detected in the HF calorimeter opposite to that used to define the $Q_{nA}$ vector. The $Q_{nB}$ vector corresponds to particles measured in the tracker with $\abs{\eta}<0.5$. Since the $v_{n}(\pt)$ coefficients increase with $\pt$ up to $\approx 3\GeVc$, the choice of either \ptor $E_{\mathrm{T}}$ weighting results in a better event-plane resolution than with unit weighting. The $Q_{nA}$ and $Q_{nC}$ vectors use $E_{\mathrm{T}}$ weighting, whereas the $Q_{nB}$ vector uses \ptweighting [30].

The $Q$-cumulant method is used in this analysis to obtain the four- ($v_{n}\{4\}$), six- ($v_{n}\{6\}$), and eight- ($v_{n}\{8\}$) particle $n$th-order harmonic results by correlating unique combinations of four, six, and eight particles within each event. The method uses a generic framework described in Ref. [31]. This framework allows for a track-by-track weighting to correct for the detector acceptance effects. A wider pseudorapidity range with $\abs{\eta}<2.4$ is used for the cumulant method analysis, as compared to the scalar-product method, to reduce statistical uncertainties.

Results are presented in ranges of collision centrality. The centrality variable is defined as a fraction of the inelastic hadronic cross section, with 0% corresponding to full overlap of the two colliding nuclei. The event centrality is determined offline and is based on the total energy measured in calorimeters located in the forward pseudorapidity region $3<\abs{\eta}<5$. The analysis is performed in 11 centrality classes, with intervals ranging from 0–5% to 60–70%. By comparing the XeXe and PbPb results in given centrality ranges, similar collision overlap geometries can be achieved, albeit with different numbers of participants.

In comparing the XeXe and PbPb results for more peripheral collisions, it needs to be noted that the XeXe results can be affected by an experimental bias introduced by the centrality determination. Multiplicity fluctuations in the forward region used to determine the event centrality can reduce the centrality resolution. Monte Carlo studies using the \HYDJETevent generator indicate this bias can be as large as 5% in the 50–60% centrality range and 10% in the 60–70% range for the $v_{n}\{2\}$ coefficients. For the $v_{n}\{4\}$ coefficients, the bias is less than 5% in the 60–70% centrality range. For more central events, the bias is found to be negligible.

0.5 Systematic uncertainties

Four different sources of systematic uncertainties are considered. To study the effect of the track selection on the final results, different track criteria are applied by varying the limits for the impact parameter significance from 2 to 5, and the relative \pt uncertainty from 5% to 10%. These variations are found to have a 1% influence on $v_{n}$ results for peripheral collisions, increasing to 10% for the most central collisions at the lowest \pt values. The effect of moving the primary vertex position along the beam axis is studied by comparing the results with events from the vertex position ranges $\abs{z_{\mathrm{vtx}}}<3\unit{cm}$ and $3<\abs{z_{\mathrm{vtx}}}<15\unit{cm}$ to the default range of $\abs{z_{\mathrm{vtx}}}<15\unit{cm}$. A 1% systematic uncertainty is attributed to this source. The systematic uncertainty resulting from the XeXe centrality calibration is estimated by varying the event selection criteria. This uncertainty is largest for the most peripheral centrality bin, where it reaches a value of 3%. To explore the sensitivity of the results to the MC simulations on which the efficiency determinations are based, analyses using the hydjet 1.9 [32] event generator are done for generated tracks both before and after the detector effects are taken into account. The results for the two cases differ by about 2% for most centrality ranges, but the difference increases to 10% for the most central events and the lowest track transverse momenta, 0.3–0.4\GeVc. The observed differences are included as a systematic uncertainty. The different uncertainty sources are independent and uncorrelated, therefore the total systematic uncertainty is obtained by combining the individual contributions in quadrature.

0.6 Results

Figure 1 shows the $v_{2}$ results, as a function of \ptand in 11 centrality bins, as measured with the different techniques. The two- and multiparticle correlation results are averaged over the pseudorapidity range of $\abs{\eta}<2.4$, while the scalar-product results are based on tracks with $\abs{\eta}<0.8$. The elliptic flow values extracted from two-particle correlations show the same pattern as with the multiparticle correlations, but with higher magnitudes. The difference in the results obtained from the two different methods can be largely ascribed to event-by-event fluctuations of the $v_{2}$ coefficient [20]. The $v_{2}$ magnitude increases with \pt, reaching a maximum value of $0.21$ around 3–4\GeVcin the 30–35% centrality range, and then slowly decreases. The maximum shifts to a lower \ptvalue as the events become more peripheral. Whereas $v_{2}\{\mathrm{SP}\}$ is found to be generally larger than $v_{2}\{2,\abs{\Delta\eta}>2\}$, as expected for the narrower range near midpseudorapidity used for the scalar-product analysis, the situation switches at higher \ptvalues for centralities $>30\%$. This might reflect a larger nonflow contribution to the two-particle correlation results. The pseudorapidity gap of two units used in the two-particle correlation analysis is less effective in removing non-flow effects, as compared to the gap of three units used for the scalar-product analysis. In the most peripheral events, the $v_{2}\{2\}$ distribution becomes almost flat for $\pt>3.0\GeVc$. This may be a consequence of nonflow, dijet correlations dominating the results as the system size becomes small.

Figure 2 shows the $v_{3}$ values. The difference between the two- and four-particle $v_{3}$ values are larger than found for the corresponding $v_{2}$ values, exceeding a factor of 2. This suggests a larger fluctuation component to triangular flow as compared to elliptic flow. The difference in amplitude would be qualitatively expected if the $v_{3}$ correlations were dominated by initial-state fluctuations [18]. For most centralities, the four-particle distributions have no clear peak value and their \pt dependence is not as prominent as that found for the two-particle and scalar-product methods. The $v_{3}\{m>4\}$ values could not be reliably determined because of their large statistical uncertainties. The $v_{3}\{2\}(\pt)$ distribution has a similar shape as found for the $v_{2}\{2\}(\pt)$ distribution, but with smaller values that approach zero, or even become negative, at higher \ptvalues in the most peripheral centrality ranges.

The $v_{4}$ results from the two-particle correlation and scalar-product methods are presented in Fig. 3. The $Q$-cumulant results are not shown because of statistical limitations. The shape of the $v_{4}(\pt)$ distribution is similar to those for the other measured harmonics. All three harmonics, with $n$ = 2, 3, and 4, are found to have maxima at similar \ptvalues, but with the $n$ = 3 and $n$ = 4 harmonics having a reduced centrality dependence as compared to the $n$ = 2 harmonic. For all three harmonics, the scalar-product values are systematically larger than the two-particle correlation results. While fluctuation effects are expected to affect both methods in a similar way, the methods measure flow in different pseudorapidity ranges, which might account for the observed difference. The similarity of the results suggests there is only a weak pseudorapidity dependence for all three harmonics.

The spectrum-weighted, single-particle anisotropy coefficients, using the two- and multiparticle correlation methods, are presented in Fig. 4. The $v_{2}$ coefficients show a strong centrality dependence with a maximum value in the 40–50% centrality bin. The $v_{3}$ and $v_{4}$ coefficients have only a weak dependence on centrality. Results based on multiparticle cumulants are below the $v_{n}\{2\}$ values, as expected for the influence of flow fluctuations. The predictions of the IP-Glasma+music+UrQMD model are compared to the experimental $v_{n}\{2\}$ results. In this model, initial-state dynamics are described by impact parameter dependent flowing Glasma gluon fields [33]. The subsequent hydrodynamic evolution is calculated with a music simulation [34], which is a relativistic $(3+1)D$ model that includes shear viscosity (with a shear viscosity over entropy ratio $\eta/s=0.16$) and a temperature-dependent bulk viscosity over entropy ratio [$\zeta/s(T)$] [35]. The simulation finally switches from a fluid-dynamic description to a transport description using the ultrarelativistic quantum molecular dynamics (UrQMD) model at the hadronization hypersurface [36]. The theoretical calculations are in good agreement with data for the $v_{2}$ and $v_{4}$ values. For the $v_{3}$ coefficient, the calculation gives slightly larger values than observed, with the difference increasing as the size of the nuclear overlap region decreases (i.e., increasing centrality percentage).

Figure 5 shows the ratios $v_{2}\{6\}/v_{2}\{4\}$, $v_{2}\{4\}/v_{2}\{2\}$, and $v_{3}\{4\}/v_{3}\{2\}$. Theoretical predictions from a hydrodynamic model [37] calculation that uses $\mathrm{T_{R}ENTo}$ initial conditions [38] and from the IP-Glasma+music+UrQMD model are compared to the experimental results. The former starts the hydrodynamic evolution at a time $\tau=0.6$ fm/c and has a shear viscosity to entropy ratio of $\eta/s=$ 0.047. Xenon is known to be a deformed nucleus with a quadrupole deformation of $\epsilon_{2}=0.15$ [39]. The $\mathrm{T_{R}ENTo}$ calculations are performed assuming both spherical and nominally deformed xenon nuclei. The $v_{2}\{4\}/v_{2}\{2\}$ ratio shows a strong centrality dependence, with the greatest deviation from unity, with a value of 0.625, corresponding to 5–10% central events. The $v_{3}\{4\}/v_{3}\{2\}$ and $v_{2}\{6\}/v_{2}\{4\}$ ratios show little, if any, centrality dependence. The $v_{3}\{4\}/v_{3}\{2\}$ has a value close to 0.55 for all centralities, indicating a strong influence of fluctuations on triangular flow [20]. The $v_{2}\{6\}/v_{2}\{4\}$ ratio is a few percent below unity and suggests the existence of higher-order corrections to a near-Gaussian distribution of the event-by-event flow fluctuations [40]. The IP-Glasma+music+UrQMD and hydrodynamic models give comparable agreement with data for the flow harmonic ratios. No significant difference is found between the calculations that assume spherical and deformed Xe nuclear shapes. This suggests that the fluctuations are not sensitive to the small deformation associated with the nucleus.

The $v_{2}$ coefficients obtained by the two-particle correlations technique for XeXe collisions at $\sqrtsNN=5.44\TeV$ are compared with corresponding PbPb data at $5.02\TeV$ as a function of transverse momentum in various centrality bins in Fig. 6. The $v_{2}$ values for the two systems show similar dependence on \pt. However, the maximum value of the PbPb elliptic flow coefficient is found to be greater than the corresponding XeXe value except in the 0–5% centrality bin. Since, for the most central collisions, the participant fluctuations in the initial-state geometry provide the dominant contribution to the final spacial anisotropy, lower values of $v_{2}$ in that region are expected [37] for PbPb collisions because of the larger system size. The $v_{3}\{2,\abs{\Delta\eta}>2\}$ coefficients for the two systems are compared in Fig. 7. The $v_{3}$ harmonic is entirely generated by initial participant fluctuations, so slightly larger values are expected in XeXe than in PbPb for central events (e.g., 0–30% centrality), as observed in the data. However, the $v_{3}$ harmonic has a larger sensitivity to transport coefficients (i.e., the shear viscosity) of the created medium, which tends to suppress the azimuthal anisotropy, especially for systems with a small size. This might explain the trend of $v_{3}$ where the system with the larger value is reversed in the 30–70% centrality range, with the larger PbPb system showing slightly higher $v_{3}$ values for more peripheral events. The $v_{4}\{2,\abs{\Delta\eta}>2\}$ coefficients in PbPb and XeXe collisions are shown in Fig 8. Higher $v_{4}$ values are found for PbPb collisions, as compared to the corresponding XeXe collision results, except for the transverse momentum interval $\pt<3.0\GeVc$ in the 5% most central events. The ordering of the measured harmonics between the two systems is consistent with participant fluctuations having a dominant role in central collisions, and viscosity effects becoming more important for mid-central and peripheral collisions.

Since ideal hydrodynamics is scale invariant, the XeXe and PbPb results should have similar behavior [37]. For the same percentage centrality range, the interaction regions of the two colliding systems will have similar average shapes, but will have different size. For example, in the 30–40% centrality class, the number of participating nucleons is about 1.6 times higher for the PbPb collisions. However, initial-state fluctuations and viscosity corrections can cause scale invariance breaking. Fluctuations of the initial state are proportional to $A^{-1/2}$, where $A$ is the atomic mass, and, therefore, one can expect a larger fluctuation component for XeXe collisions than for PbPb collisions [41]. However, the influence of the localized fluctuations will decrease with increasing viscosity. The viscosity is thought to be proportional to $A^{-1/3}$ [42] and is therefore also expected to be larger for XeXe collisions. Although the hydrodynamic model simulations do not suggest a large effect on the $v_{n}\{4\}/v_{n}\{2\}$ and $v_{2}\{6\}/v_{2}\{4\}$ ratios based on the Xe deformation, this deformation can influence the ratio of the XeXe and PbPb results. The quadrupole deformation of the colliding nuclei is expected to have the greatest influence for the XeXe $v_{2}$ values corresponding to the most central collisions [37].

Figure 9 shows the \ptdependent ratios of XeXe and PbPb harmonic coefficients for different centrality ranges. The ratios reach a maximum value between 1 and 2\GeVc, within the current uncertainties, and then decrease up to $\pt\sim 6\GeVc$, at which point they start to increase again. The increasing trend above 6\GeVc, which is most pronounced for the $v_{2}$ coefficient, might be a consequence of back-to-back dijet correlations that can not be fully eliminated with the $\abs{\Delta\eta}>2$ requirement. This nonflow behavior is increasingly significant as the system size becomes smaller, with correspondingly smaller particle multiplicities.

Figure 10 compares the spectrum-weighted $v_{2}$, $v_{3}$, and $v_{4}$ values with $0.3<\pt\ <3.0\GeVc$ for the XeXe and PbPb systems. The largest difference between the two systems is found for the $v_{2}$ coefficients corresponding to the most central events, where the XeXe results are larger by a factor of about 1.3. For centralities above 10%, the PbPb results become higher and the ratio has only a weak centrality dependence. For the $v_{3}$ and $v_{4}$ coefficients, the ratio $v_{n}[\text{XeXe}]/v_{n}[\text{PbPb}]$ decreases with centrality with an almost constant slope. The relativistic hydrodynamic model calculations of Ref. [37] are also shown in Fig. 10. Compared to calculations assuming a spherical Xe shape, including the xenon nuclear deformation in hydrodynamic models has little effect on the predicted flow characteristics over the centrality range 10–70%, as expected. For the most central 0–10% range, the $v_{2}[\text{XeXe}]/v_{2}[\text{PbPb}]$ model ratio shows a greater sensitivity to the xenon nuclear deformation, with the calculation including deformation in better agreement with experiment. For all measured harmonics, the model values lie below the experimental results, with the greatest difference found for the $v_{4}$ coefficients.

0.7 Summary

In this paper, the $v_{2}$, $v_{3}$, and $v_{4}$ azimuthal flow harmonics are shown for xenon-xenon (XeXe) collisions at a center-of-mass energy per nucleon pair of $\sqrtsNN=5.44\TeV$ based on data obtained with the CMS detector. Three analysis techniques with different sensitivities to flow fluctuations, including two-particle correlations, the scalar-product method, and the multiparticle cumulant method, are used to explore the event-by-event fluctuations. The harmonic coefficients are compared to those found with lead-lead (PbPb) collisions at $\sqrtsNN=5.02\TeV$ to explore the effect of the system size. The magnitude of the $v_{2}$ coefficients for XeXe collisions are larger than those found in PbPb collisions for the most central collisions. This is attributed to a larger fluctuation component in the lighter colliding system. In more peripheral events, the PbPb $v_{n}$ coefficients are consistently larger than those found for XeXe collisions. This behavior is qualitatively consistent with expectations from hydrodynamic models. A clear ordering $v_{2}\{2\}>v_{2}\{4\}\approx v_{2}\{6\}\approx v_{2}\{8\}$ is observed for XeXe collisions, with $v_{2}\{6\}$ and $v_{2}\{4\}$ values differing by 2–3%. The $v_{3}\{4\}/v_{3}\{2\}$ ratio is found to be significantly smaller than the $v_{2}\{4\}/v_{2}\{2\}$ ratio, suggesting a dominant fluctuation component for the $v_{3}$ harmonic. Hydrodynamic models that consider the xenon nuclear deformation are able to better describe the $v_{2}[{\mathrm{XeXe}}]/v_{2}[{\mathrm{PbPb}}]$ ratio in central collisions than those assuming a spherical Xe shape, although the deformation appears to have little effect on the fluctuation-sensitive ratio of the cumulant orders. These measurements provide new tests of hydrodynamic models and help to constrain hydrodynamic descriptions of the nuclear collisions.

Acknowledgements.

We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440 and 765710 (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the “Excellence of Science – EOS” – be.h project n. 30820817; the Beijing Municipal Science & Technology Commission, No. Z181100004218003; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Lendület (“Momentum”) Program and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences, the New National Excellence Program ÚNKP, the NKFIA research grants 123842, 123959, 124845, 124850, and 125105 (Hungary); the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); the Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA).

.8 The CMS Collaboration

\cmsinstskip

**Yerevan Physics Institute, Yerevan, Armenia

** A.M. Sirunyan, A. Tumasyan \cmsinstskip**Institut für Hochenergiephysik, Wien, Austria

** W. Adam, F. Ambrogi, E. Asilar, T. Bergauer, J. Brandstetter, M. Dragicevic, J. Erö, A. Escalante Del Valle, M. Flechl, R. Frühwirth\cmsAuthorMark1, V.M. Ghete, J. Hrubec, M. Jeitler\cmsAuthorMark1, N. Krammer, I. Krätschmer, D. Liko, T. Madlener, I. Mikulec, N. Rad, H. Rohringer, J. Schieck\cmsAuthorMark1, R. Schöfbeck, M. Spanring, D. Spitzbart, A. Taurok, W. Waltenberger, J. Wittmann, C.-E. Wulz\cmsAuthorMark1, M. Zarucki \cmsinstskip**Institute for Nuclear Problems, Minsk, Belarus

** V. Chekhovsky, V. Mossolov, J. Suarez Gonzalez \cmsinstskip**Universiteit Antwerpen, Antwerpen, Belgium

** E.A. De Wolf, D. Di Croce, X. Janssen, J. Lauwers, M. Pieters, H. Van Haevermaet, P. Van Mechelen, N. Van Remortel \cmsinstskip**Vrije Universiteit Brussel, Brussel, Belgium

** S. Abu Zeid, F. Blekman, J. D’Hondt, I. De Bruyn, J. De Clercq, K. Deroover, G. Flouris, D. Lontkovskyi, S. Lowette, I. Marchesini, S. Moortgat, L. Moreels, Q. Python, K. Skovpen, S. Tavernier, W. Van Doninck, P. Van Mulders, I. Van Parijs \cmsinstskip**Université Libre de Bruxelles, Bruxelles, Belgium

** D. Beghin, B. Bilin, H. Brun, B. Clerbaux, G. De Lentdecker, H. Delannoy, B. Dorney, G. Fasanella, L. Favart, R. Goldouzian, A. Grebenyuk, A.K. Kalsi, T. Lenzi, J. Luetic, N. Postiau, E. Starling, L. Thomas, C. Vander Velde, P. Vanlaer, D. Vannerom, Q. Wang \cmsinstskip**Ghent University, Ghent, Belgium

** T. Cornelis, D. Dobur, A. Fagot, M. Gul, I. Khvastunov\cmsAuthorMark2, D. Poyraz, C. Roskas, D. Trocino, M. Tytgat, W. Verbeke, B. Vermassen, M. Vit, N. Zaganidis \cmsinstskip**Université Catholique de Louvain, Louvain-la-Neuve, Belgium

** H. Bakhshiansohi, O. Bondu, S. Brochet, G. Bruno, C. Caputo, P. David, C. Delaere, M. Delcourt, A. Giammanco, G. Krintiras, V. Lemaitre, A. Magitteri, A. Mertens, M. Musich, K. Piotrzkowski, A. Saggio, M. Vidal Marono, S. Wertz, J. Zobec \cmsinstskip**Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil

** F.L. Alves, G.A. Alves, M. Correa Martins Junior, G. Correia Silva, C. Hensel, A. Moraes, M.E. Pol, P. Rebello Teles \cmsinstskip**Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

** E. Belchior Batista Das Chagas, W. Carvalho, J. Chinellato\cmsAuthorMark3, E. Coelho, E.M. Da Costa, G.G. Da Silveira\cmsAuthorMark4, D. De Jesus Damiao, C. De Oliveira Martins, S. Fonseca De Souza, H. Malbouisson, D. Matos Figueiredo, M. Melo De Almeida, C. Mora Herrera, L. Mundim, H. Nogima, W.L. Prado Da Silva, L.J. Sanchez Rosas, A. Santoro, A. Sznajder, M. Thiel, E.J. Tonelli Manganote\cmsAuthorMark3, F. Torres Da Silva De Araujo, A. Vilela Pereira \cmsinstskip**Universidade Estadual Paulista a, Universidade Federal do ABC b, São Paulo, Brazil

** S. Ahujaa, C.A. Bernardesa, L. Calligarisa, T.R. Fernandez Perez Tomeia, E.M. Gregoresb, P.G. Mercadanteb, S.F. Novaesa, SandraS. Padulaa \cmsinstskip**Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria

** A. Aleksandrov, R. Hadjiiska, P. Iaydjiev, A. Marinov, M. Misheva, M. Rodozov, M. Shopova, G. Sultanov \cmsinstskip**University of Sofia, Sofia, Bulgaria

** A. Dimitrov, L. Litov, B. Pavlov, P. Petkov \cmsinstskip**Beihang University, Beijing, China

** W. Fang\cmsAuthorMark5, X. Gao\cmsAuthorMark5, L. Yuan \cmsinstskip**Institute of High Energy Physics, Beijing, China

** M. Ahmad, J.G. Bian, G.M. Chen, H.S. Chen, M. Chen, Y. Chen, C.H. Jiang, D. Leggat, H. Liao, Z. Liu, F. Romeo, S.M. Shaheen\cmsAuthorMark6, A. Spiezia, J. Tao, Z. Wang, E. Yazgan, H. Zhang, S. Zhang\cmsAuthorMark6, J. Zhao \cmsinstskip**State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China

** Y. Ban, G. Chen, A. Levin, J. Li, L. Li, Q. Li, Y. Mao, S.J. Qian, D. Wang, Z. Xu \cmsinstskip**Tsinghua University, Beijing, China

** Y. Wang \cmsinstskip**Universidad de Los Andes, Bogota, Colombia

** C. Avila, A. Cabrera, C.A. Carrillo Montoya, L.F. Chaparro Sierra, C. Florez, C.F. González Hernández, M.A. Segura Delgado \cmsinstskip**University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, Croatia

** B. Courbon, N. Godinovic, D. Lelas, I. Puljak, T. Sculac \cmsinstskip**University of Split, Faculty of Science, Split, Croatia

** Z. Antunovic, M. Kovac \cmsinstskip**Institute Rudjer Boskovic, Zagreb, Croatia

** V. Brigljevic, D. Ferencek, K. Kadija, B. Mesic, A. Starodumov\cmsAuthorMark7, T. Susa \cmsinstskip**University of Cyprus, Nicosia, Cyprus

** M.W. Ather, A. Attikis, M. Kolosova, G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis, H. Rykaczewski \cmsinstskip**Charles University, Prague, Czech Republic

** M. Finger\cmsAuthorMark8, M. Finger Jr.\cmsAuthorMark8 \cmsinstskip**Escuela Politecnica Nacional, Quito, Ecuador

** E. Ayala \cmsinstskip**Universidad San Francisco de Quito, Quito, Ecuador

** E. Carrera Jarrin \cmsinstskip**Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt

** A. Ellithi Kamel\cmsAuthorMark9, M.A. Mahmoud\cmsAuthorMark10*,*\cmsAuthorMark11, Y. Mohammed\cmsAuthorMark10 \cmsinstskip**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 \cmsinstskip**Department of Physics, University of Helsinki, Helsinki, Finland

** P. Eerola, H. Kirschenmann, J. Pekkanen, M. Voutilainen \cmsinstskip**Helsinki Institute of Physics, Helsinki, Finland

** J. Havukainen, J.K. Heikkilä, T. Järvinen, V. Karimäki, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Laurila, S. Lehti, T. Lindén, P. Luukka, T. Mäenpää, H. Siikonen, E. Tuominen, J. Tuominiemi \cmsinstskip**Lappeenranta University of Technology, Lappeenranta, Finland

** T. Tuuva \cmsinstskip**IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France

** 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, C. Leloup, E. Locci, J. Malcles, G. Negro, J. Rander, A. Rosowsky, M.Ö. Sahin, M. Titov \cmsinstskip**Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, Université Paris-Saclay, Palaiseau, France

** A. Abdulsalam\cmsAuthorMark12, C. Amendola, I. Antropov, F. Beaudette, P. Busson, C. Charlot, R. Granier de Cassagnac, I. Kucher, A. Lobanov, J. Martin Blanco, C. Martin Perez, M. Nguyen, C. Ochando, G. Ortona, P. Pigard, J. Rembser, R. Salerno, J.B. Sauvan, Y. Sirois, A.G. Stahl Leiton, A. Zabi, A. Zghiche \cmsinstskip**Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France

** J.-L. Agram\cmsAuthorMark13, J. Andrea, D. Bloch, J.-M. Brom, E.C. Chabert, V. Cherepanov, C. Collard, E. Conte\cmsAuthorMark13, J.-C. Fontaine\cmsAuthorMark13, D. Gelé, U. Goerlach, M. Jansová, A.-C. Le Bihan, N. Tonon, P. Van Hove \cmsinstskip**Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France

** S. Gadrat \cmsinstskip**Université de Lyon, Université Claude Bernard Lyon 1, CNRS-IN2P3, Institut de Physique Nucléaire de Lyon, Villeurbanne, France

** S. Beauceron, C. Bernet, G. Boudoul, N. Chanon, R. Chierici, D. Contardo, P. Depasse, H. El Mamouni, J. Fay, L. Finco, S. Gascon, M. Gouzevitch, G. Grenier, B. Ille, F. Lagarde, I.B. Laktineh, H. Lattaud, M. Lethuillier, L. Mirabito, S. Perries, A. Popov\cmsAuthorMark14, V. Sordini, G. Touquet, M. Vander Donckt, S. Viret \cmsinstskip**Georgian Technical University, Tbilisi, Georgia

** A. Khvedelidze\cmsAuthorMark8 \cmsinstskip**Tbilisi State University, Tbilisi, Georgia

** Z. Tsamalaidze\cmsAuthorMark8 \cmsinstskip**RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany

** C. Autermann, L. Feld, M.K. Kiesel, K. Klein, M. Lipinski, M. Preuten, M.P. Rauch, C. Schomakers, J. Schulz, M. Teroerde, B. Wittmer, V. Zhukov\cmsAuthorMark14 \cmsinstskip**RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany

** A. Albert, D. Duchardt, M. Erdmann, S. Erdweg, T. Esch, R. Fischer, S. Ghosh, A. Güth, T. Hebbeker, C. Heidemann, K. Hoepfner, H. Keller, L. Mastrolorenzo, M. Merschmeyer, A. Meyer, P. Millet, S. Mukherjee, T. Pook, M. Radziej, H. Reithler, M. Rieger, A. Schmidt, D. Teyssier, S. Thüer \cmsinstskip**RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany

** G. Flügge, O. Hlushchenko, T. Kress, A. Künsken, T. Müller, A. Nehrkorn, A. Nowack, C. Pistone, O. Pooth, D. Roy, H. Sert, A. Stahl\cmsAuthorMark15 \cmsinstskip**Deutsches Elektronen-Synchrotron, Hamburg, Germany

** M. Aldaya Martin, T. Arndt, C. Asawatangtrakuldee, I. Babounikau, K. Beernaert, O. Behnke, U. Behrens, A. Bermúdez Martínez, D. Bertsche, A.A. Bin Anuar, K. Borras\cmsAuthorMark16, V. Botta, A. Campbell, P. Connor, C. Contreras-Campana, V. Danilov, A. De Wit, M.M. Defranchis, C. Diez Pardos, D. Domínguez Damiani, G. Eckerlin, T. Eichhorn, A. Elwood, E. Eren, E. Gallo\cmsAuthorMark17, A. Geiser, A. Grohsjean, M. Guthoff, M. Haranko, A. Harb, J. Hauk, H. Jung, M. Kasemann, J. Keaveney, C. Kleinwort, J. Knolle, D. Krücker, W. Lange, A. Lelek, T. Lenz, J. Leonard, K. Lipka, W. Lohmann\cmsAuthorMark18, R. Mankel, I.-A. Melzer-Pellmann, A.B. Meyer, M. Meyer, M. Missiroli, G. Mittag, J. Mnich, V. Myronenko, S.K. Pflitsch, D. Pitzl, A. Raspereza, M. Savitskyi, P. Saxena, P. Schütze, C. Schwanenberger, R. Shevchenko, A. Singh, H. Tholen, O. Turkot, A. Vagnerini, G.P. Van Onsem, R. Walsh, Y. Wen, K. Wichmann, C. Wissing, O. Zenaiev \cmsinstskip**University of Hamburg, Hamburg, Germany

** R. Aggleton, S. Bein, L. Benato, A. Benecke, V. Blobel, T. Dreyer, A. Ebrahimi, E. Garutti, D. Gonzalez, P. Gunnellini, J. Haller, A. Hinzmann, A. Karavdina, G. Kasieczka, R. Klanner, R. Kogler, N. Kovalchuk, S. Kurz, V. Kutzner, J. Lange, D. Marconi, J. Multhaup, M. Niedziela, C.E.N. Niemeyer, D. Nowatschin, A. Perieanu, A. Reimers, O. Rieger, C. Scharf, P. Schleper, S. Schumann, J. Schwandt, J. Sonneveld, H. Stadie, G. Steinbrück, F.M. Stober, M. Stöver, A. Vanhoefer, B. Vormwald, I. Zoi \cmsinstskip**Karlsruher Institut fuer Technologie, Karlsruhe, Germany

** M. Akbiyik, C. Barth, M. Baselga, S. Baur, E. Butz, R. Caspart, T. Chwalek, F. Colombo, W. De Boer, A. Dierlamm, K. El Morabit, N. Faltermann, B. Freund, M. Giffels, M.A. Harrendorf, F. Hartmann\cmsAuthorMark15, S.M. Heindl, U. Husemann, F. Kassel\cmsAuthorMark15, I. Katkov\cmsAuthorMark14, S. Kudella, S. Mitra, M.U. Mozer, Th. Müller, M. Plagge, G. Quast, K. Rabbertz, M. Schröder, I. Shvetsov, G. Sieber, H.J. Simonis, R. Ulrich, S. Wayand, M. Weber, T. Weiler, S. Williamson, C. Wöhrmann, R. Wolf \cmsinstskip**Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece

** G. Anagnostou, G. Daskalakis, T. Geralis, A. Kyriakis, D. Loukas, G. Paspalaki, I. Topsis-Giotis \cmsinstskip**National and Kapodistrian University of Athens, Athens, Greece

** B. Francois, G. Karathanasis, S. Kesisoglou, P. Kontaxakis, A. Panagiotou, I. Papavergou, N. Saoulidou, E. Tziaferi, K. Vellidis \cmsinstskip**National Technical University of Athens, Athens, Greece

** K. Kousouris, I. Papakrivopoulos, G. Tsipolitis \cmsinstskip**University of Ioánnina, Ioánnina, Greece

** I. Evangelou, C. Foudas, P. Gianneios, P. Katsoulis, P. Kokkas, S. Mallios, N. Manthos, I. Papadopoulos, E. Paradas, J. Strologas, F.A. Triantis, D. Tsitsonis \cmsinstskip**MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary

** M. Bartók\cmsAuthorMark19, M. Csanad, N. Filipovic, P. Major, M.I. Nagy, G. Pasztor, O. Surányi, G.I. Veres \cmsinstskip**Wigner Research Centre for Physics, Budapest, Hungary

** G. Bencze, C. Hajdu, D. Horvath\cmsAuthorMark20, Á. Hunyadi, F. Sikler, T.Á. Vámi, V. Veszpremi, G. Vesztergombi${}^{\textrm{\textdagger}}$ \cmsinstskip**Institute of Nuclear Research ATOMKI, Debrecen, Hungary

** N. Beni, S. Czellar, J. Karancsi\cmsAuthorMark21, A. Makovec, J. Molnar, Z. Szillasi \cmsinstskip**Institute of Physics, University of Debrecen, Debrecen, Hungary

** P. Raics, Z.L. Trocsanyi, B. Ujvari \cmsinstskip**Indian Institute of Science (IISc), Bangalore, India

** S. Choudhury, J.R. Komaragiri, P.C. Tiwari \cmsinstskip**National Institute of Science Education and Research, HBNI, Bhubaneswar, India

** S. Bahinipati\cmsAuthorMark22, C. Kar, P. Mal, K. Mandal, A. Nayak\cmsAuthorMark23, D.K. Sahoo\cmsAuthorMark22, S.K. Swain \cmsinstskip**Panjab University, Chandigarh, India

** S. Bansal, S.B. Beri, V. Bhatnagar, S. Chauhan, R. Chawla, N. Dhingra, R. Gupta, A. Kaur, M. Kaur, S. Kaur, R. Kumar, P. Kumari, M. Lohan, A. Mehta, K. Sandeep, S. Sharma, J.B. Singh, A.K. Virdi, G. Walia \cmsinstskip**University of Delhi, Delhi, India

** A. Bhardwaj, B.C. Choudhary, R.B. Garg, M. Gola, S. Keshri, Ashok Kumar, S. Malhotra, M. Naimuddin, P. Priyanka, K. Ranjan, Aashaq Shah, R. Sharma \cmsinstskip**Saha Institute of Nuclear Physics, HBNI, Kolkata, India

** R. Bhardwaj\cmsAuthorMark24, M. Bharti\cmsAuthorMark24, R. Bhattacharya, S. Bhattacharya, U. Bhawandeep\cmsAuthorMark24, D. Bhowmik, S. Dey, S. Dutt\cmsAuthorMark24, S. Dutta, S. Ghosh, K. Mondal, S. Nandan, A. Purohit, P.K. Rout, A. Roy, S. Roy Chowdhury, G. Saha, S. Sarkar, M. Sharan, B. Singh\cmsAuthorMark24, S. Thakur\cmsAuthorMark24 \cmsinstskip**Indian Institute of Technology Madras, Madras, India

** P.K. Behera \cmsinstskip**Bhabha Atomic Research Centre, Mumbai, India

** R. Chudasama, D. Dutta, V. Jha, V. Kumar, P.K. Netrakanti, L.M. Pant, P. Shukla \cmsinstskip**Tata Institute of Fundamental Research-A, Mumbai, India

** T. Aziz, M.A. Bhat, S. Dugad, G.B. Mohanty, N. Sur, B. Sutar, RavindraKumar Verma \cmsinstskip**Tata Institute of Fundamental Research-B, Mumbai, India

** S. Banerjee, S. Bhattacharya, S. Chatterjee, P. Das, M. Guchait, Sa. Jain, S. Karmakar, S. Kumar, M. Maity\cmsAuthorMark25, G. Majumder, K. Mazumdar, N. Sahoo, T. Sarkar\cmsAuthorMark25 \cmsinstskip**Indian Institute of Science Education and Research (IISER), Pune, India

** S. Chauhan, S. Dube, V. Hegde, A. Kapoor, K. Kothekar, S. Pandey, A. Rane, S. Sharma \cmsinstskip**Institute for Research in Fundamental Sciences (IPM), Tehran, Iran

** S. Chenarani\cmsAuthorMark26, E. Eskandari Tadavani, S.M. Etesami\cmsAuthorMark26, M. Khakzad, M. Mohammadi Najafabadi, M. Naseri, F. Rezaei Hosseinabadi, B. Safarzadeh\cmsAuthorMark27, M. Zeinali \cmsinstskip**University College Dublin, Dublin, Ireland

** M. Felcini, M. Grunewald \cmsinstskip**INFN Sezione di Bari a, Università di Bari b, Politecnico di Bari c, Bari, Italy

** M. Abbresciaa**,b, C. Calabriaa**,b, A. Colaleoa, D. Creanzaa**,c, L. Cristellaa**,b, N. De Filippisa**,c, M. De Palmaa**,b, A. Di Florioa**,b, F. Erricoa**,b, L. Fiorea, A. Gelmia**,b, G. Iasellia**,c, M. Incea**,b, S. Lezkia**,b, G. Maggia**,c, M. Maggia, G. Minielloa**,b, S. Mya**,b, S. Nuzzoa**,b, A. Pompilia**,b, G. Pugliesea**,c, R. Radognaa, A. Ranieria, G. Selvaggia**,b, A. Sharmaa, L. Silvestrisa, R. Vendittia, P. Verwilligena, G. Zitoa \cmsinstskip**INFN Sezione di Bologna a, Università di Bologna b, Bologna, Italy

** G. Abbiendia, C. Battilanaa**,b, D. Bonacorsia**,b, L. Borgonovia**,b, S. Braibant-Giacomellia**,b, R. Campaninia**,b, P. Capiluppia**,b, A. Castroa**,b, F.R. Cavalloa, S.S. Chhibraa**,b, C. Cioccaa, G. Codispotia**,b, M. Cuffiania**,b, G.M. Dallavallea, F. Fabbria, A. Fanfania**,b, E. Fontanesi, P. Giacomellia, C. Grandia, L. Guiduccia**,b, F. Iemmia**,b, S. Lo Meoa, S. Marcellinia, G. Masettia, A. Montanaria, F.L. Navarriaa**,b, A. Perrottaa, F. Primaveraa**,b,\cmsAuthorMark15, T. Rovellia**,b, G.P. Sirolia**,b, N. Tosia \cmsinstskip**INFN Sezione di Catania a, Università di Catania b, Catania, Italy

** S. Albergoa**,b, A. Di Mattiaa, R. Potenza*a**,b, A. Tricomia**,b, C. Tuvea**,*b \cmsinstskip**INFN Sezione di Firenze a, Università di Firenze b, Firenze, Italy

** G. Barbaglia, K. Chatterjeea**,b, V. Ciullia**,b, C. Civininia, R. D’Alessandroa**,b, E. Focardia**,b, G. Latino, P. Lenzia**,b, M. Meschinia, S. Paolettia, L. Russoa**,\cmsAuthorMark28, G. Sguazzonia, D. Stroma, L. Viliania \cmsinstskip**INFN Laboratori Nazionali di Frascati, Frascati, Italy

** L. Benussi, S. Bianco, F. Fabbri, D. Piccolo \cmsinstskip**INFN Sezione di Genova a, Università di Genova b, Genova, Italy

** F. Ferroa, F. Raveraa**,b, E. Robuttia, S. Tosi*a**,*b \cmsinstskip**INFN Sezione di Milano-Bicocca a, Università di Milano-Bicocca b, Milano, Italy

** A. Benagliaa, A. Beschib, L. Brianzaa**,b, F. Brivioa**,b, V. Cirioloa**,b,\cmsAuthorMark15, S. Di Guidaa**,d,\cmsAuthorMark15, M.E. Dinardoa**,b, S. Fiorendia**,b, S. Gennaia, A. Ghezzia**,b, P. Govonia**,b, M. Malbertia**,b, S. Malvezzia, A. Massironia**,b, D. Menascea, F. Monti, L. Moronia, M. Paganonia**,b, D. Pedrinia, S. Ragazzi*a**,b, T. Tabarelli de Fatisa**,b, D. Zuoloa**,*b \cmsinstskip**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. Buontempoa, N. Cavalloa**,c, A. De Iorioa**,b, A. Di Crescenzoa**,b, F. Fabozzia**,c, F. Fiengaa, G. Galatia, A.O.M. Iorioa**,b, W.A. Khana, L. Listaa, S. Meolaa**,d,\cmsAuthorMark15, P. Paoluccia**,\cmsAuthorMark15, C. Sciacca*a**,b, E. Voevodinaa**,*b \cmsinstskip**INFN Sezione di Padova a, Università di Padova b, Padova, Italy, Università di Trento c, Trento, Italy

** P. Azzia, N. Bacchettaa, D. Biselloa**,b, A. Bolettia**,b, A. Bragagnolo, R. Carlina**,b, P. Checchiaa, M. Dall’Ossoa**,b, P. De Castro Manzanoa, T. Dorigoa, U. Dossellia, F. Gasparinia**,b, U. Gasparinia**,b, A. Gozzelinoa, S.Y. Hoh, S. Lacapraraa, P. Lujan, M. Margonia**,b, A.T. Meneguzzoa**,b, J. Pazzinia**,b, P. Ronchesea**,b, R. Rossina**,b, F. Simonettoa**,b, A. Tiko, E. Torassaa, M. Zanetti*a**,b, P. Zottoa**,b, G. Zumerlea**,*b \cmsinstskip**INFN Sezione di Pavia a, Università di Pavia b, Pavia, Italy

** A. Braghieria, A. Magnania, P. Montagnaa**,b, S.P. Rattia**,b, V. Rea, M. Ressegottia**,b, C. Riccardia**,b, P. Salvinia, I. Vai*a**,b, P. Vituloa**,*b \cmsinstskip**INFN Sezione di Perugia a, Università di Perugia b, Perugia, Italy

** M. Biasinia**,b, G.M. Bileia, C. Cecchia**,b, D. Ciangottinia**,b, L. Fanòa**,b, P. Laricciaa**,b, R. Leonardia**,b, E. Manonia, G. Mantovania**,b, V. Mariania**,b, M. Menichellia, A. Rossia**,b, A. Santocchiaa**,b, D. Spigaa \cmsinstskip**INFN Sezione di Pisa a, Università di Pisa b, Scuola Normale Superiore di Pisa c, Pisa, Italy

** K. Androsova, P. Azzurria, G. Bagliesia, L. Bianchinia, T. Boccalia, L. Borrello, R. Castaldia, M.A. Cioccia**,b, R. Dell’Orsoa, G. Fedia, F. Fioria**,c, L. Gianninia**,c, A. Giassia, M.T. Grippoa, F. Ligabuea**,c, E. Mancaa**,c, G. Mandorlia**,c, A. Messineoa**,b, F. Pallaa, A. Rizzia**,b, P. Spagnoloa, R. Tenchinia, G. Tonellia**,b, A. Venturia, P.G. Verdinia \cmsinstskip**INFN Sezione di Roma a, Sapienza Università di Roma b, Rome, Italy

** L. Baronea**,b, F. Cavallaria, M. Cipriania**,b, D. Del Rea**,b, E. Di Marcoa**,b, M. Diemoza, S. Gellia**,b, E. Longoa**,b, B. Marzocchia**,b, P. Meridiania, G. Organtinia**,b, F. Pandolfia, R. Paramattia**,b, F. Preiatoa**,b, S. Rahatloua**,b, C. Rovellia, F. Santanastasio*a**,*b \cmsinstskip**INFN Sezione di Torino a, Università di Torino b, Torino, Italy, Università del Piemonte Orientale c, Novara, Italy

** N. Amapanea**,b, R. Arcidiaconoa**,c, S. Argiroa**,b, M. Arneodoa**,c, N. Bartosika, R. Bellana**,b, C. Biinoa, N. Cartigliaa, F. Cennaa**,b, S. Comettia, M. Costaa**,b, R. Covarellia**,b, N. Demariaa, B. Kiania**,b, C. Mariottia, S. Masellia, E. Migliorea**,b, V. Monacoa**,b, E. Monteila**,b, M. Montenoa, M.M. Obertinoa**,b, L. Pachera**,b, N. Pastronea, M. Pelliccionia, G.L. Pinna Angionia**,b, A. Romeroa**,b, M. Ruspaa**,c, R. Sacchia**,b, K. Shchelinaa**,b, V. Solaa, A. Solanoa**,b, D. Soldia**,b, A. Staianoa \cmsinstskip**INFN Sezione di Trieste a, Università di Trieste b, Trieste, Italy

** S. Belfortea, V. Candelisea**,b, M. Casarsaa, F. Cossuttia, A. Da Rolda**,b, G. Della Riccaa**,b, F. Vazzolera**,b, A. Zanettia \cmsinstskip**Kyungpook National University, Daegu, Korea

** D.H. Kim, G.N. Kim, M.S. Kim, J. Lee, S. Lee, S.W. Lee, C.S. Moon, Y.D. Oh, S.I. Pak, S. Sekmen, D.C. Son, Y.C. Yang \cmsinstskip**Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea

** H. Kim, D.H. Moon, G. Oh \cmsinstskip**Hanyang University, Seoul, Korea

** J. Goh\cmsAuthorMark29, T.J. Kim \cmsinstskip**Korea University, Seoul, Korea

** S. Cho, S. Choi, Y. Go, D. Gyun, S. Ha, B. Hong, Y. Jo, K. Lee, K.S. Lee, S. Lee, J. Lim, S.K. Park, Y. Roh \cmsinstskip**Sejong University, Seoul, Korea

** H.S. Kim \cmsinstskip**Seoul National University, Seoul, Korea

** J. Almond, J. Kim, J.S. Kim, H. Lee, K. Lee, K. Nam, S.B. Oh, B.C. Radburn-Smith, S.h. Seo, U.K. Yang, H.D. Yoo, G.B. Yu \cmsinstskip**University of Seoul, Seoul, Korea

** D. Jeon, H. Kim, J.H. Kim, J.S.H. Lee, I.C. Park \cmsinstskip**Sungkyunkwan University, Suwon, Korea

** Y. Choi, C. Hwang, J. Lee, I. Yu \cmsinstskip**Vilnius University, Vilnius, Lithuania

** V. Dudenas, A. Juodagalvis, J. Vaitkus \cmsinstskip**National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia

** I. Ahmed, Z.A. Ibrahim, M.A.B. Md Ali\cmsAuthorMark30, F. Mohamad Idris\cmsAuthorMark31, W.A.T. Wan Abdullah, M.N. Yusli, Z. Zolkapli \cmsinstskip**Universidad de Sonora (UNISON), Hermosillo, Mexico

** J.F. Benitez, A. Castaneda Hernandez, J.A. Murillo Quijada \cmsinstskip**Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico

** H. Castilla-Valdez, E. De La Cruz-Burelo, M.C. Duran-Osuna, I. Heredia-De La Cruz\cmsAuthorMark32, R. Lopez-Fernandez, J. Mejia Guisao, R.I. Rabadan-Trejo, M. Ramirez-Garcia, G. Ramirez-Sanchez, R Reyes-Almanza, A. Sanchez-Hernandez \cmsinstskip**Universidad Iberoamericana, Mexico City, Mexico

** S. Carrillo Moreno, C. Oropeza Barrera, F. Vazquez Valencia \cmsinstskip**Benemerita Universidad Autonoma de Puebla, Puebla, Mexico

** J. Eysermans, I. Pedraza, H.A. Salazar Ibarguen, C. Uribe Estrada \cmsinstskip**Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico

** A. Morelos Pineda \cmsinstskip**University of Auckland, Auckland, New Zealand

** D. Krofcheck \cmsinstskip**University of Canterbury, Christchurch, New Zealand

** S. Bheesette, P.H. Butler \cmsinstskip**National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan

** A. Ahmad, M. Ahmad, M.I. Asghar, Q. Hassan, H.R. Hoorani, A. Saddique, M.A. Shah, M. Shoaib, M. Waqas \cmsinstskip**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 \cmsinstskip**Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland

** K. Bunkowski, A. Byszuk\cmsAuthorMark33, K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski, M. Misiura, M. Olszewski, A. Pyskir, M. Walczak \cmsinstskip**Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal

** M. Araujo, P. Bargassa, C. Beirão Da Cruz E Silva, A. Di Francesco, P. Faccioli, B. Galinhas, M. Gallinaro, J. Hollar, N. Leonardo, M.V. Nemallapudi, J. Seixas, G. Strong, O. Toldaiev, D. Vadruccio, J. Varela \cmsinstskip**Joint Institute for Nuclear Research, Dubna, Russia

** S. Afanasiev, P. Bunin, M. Gavrilenko, I. Golutvin, I. Gorbunov, A. Kamenev, V. Karjavine, A. Lanev, A. Malakhov, V. Matveev\cmsAuthorMark34*,*\cmsAuthorMark35, P. Moisenz, V. Palichik, V. Perelygin, S. Shmatov, S. Shulha, N. Skatchkov, V. Smirnov, N. Voytishin, A. Zarubin \cmsinstskip**Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia

** V. Golovtsov, Y. Ivanov, V. Kim\cmsAuthorMark36, E. Kuznetsova\cmsAuthorMark37, P. Levchenko, V. Murzin, V. Oreshkin, I. Smirnov, D. Sosnov, V. Sulimov, L. Uvarov, S. Vavilov, A. Vorobyev \cmsinstskip**Institute for Nuclear Research, Moscow, Russia

** Yu. Andreev, A. Dermenev, S. Gninenko, N. Golubev, A. Karneyeu, M. Kirsanov, N. Krasnikov, A. Pashenkov, D. Tlisov, A. Toropin \cmsinstskip**Institute for Theoretical and Experimental Physics, Moscow, Russia

** V. Epshteyn, V. Gavrilov, N. Lychkovskaya, V. Popov, I. Pozdnyakov, G. Safronov, A. Spiridonov, A. Stepennov, V. Stolin, M. Toms, E. Vlasov, A. Zhokin \cmsinstskip**Moscow Institute of Physics and Technology, Moscow, Russia

** T. Aushev \cmsinstskip**National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia

** R. Chistov\cmsAuthorMark38, M. Danilov\cmsAuthorMark38, P. Parygin, D. Philippov, S. Polikarpov\cmsAuthorMark38, E. Tarkovskii \cmsinstskip**P.N. Lebedev Physical Institute, Moscow, Russia

** V. Andreev, M. Azarkin, I. Dremin\cmsAuthorMark35, M. Kirakosyan, S.V. Rusakov, A. Terkulov \cmsinstskip**Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia

** A. Baskakov, A. Belyaev, E. Boos, A. Ershov, A. Gribushin, A. Kaminskiy\cmsAuthorMark39, O. Kodolova, V. Korotkikh, I. Lokhtin, I. Miagkov, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev, I. Vardanyan \cmsinstskip**Novosibirsk State University (NSU), Novosibirsk, Russia

** A. Barnyakov\cmsAuthorMark40, V. Blinov\cmsAuthorMark40, T. Dimova\cmsAuthorMark40, L. Kardapoltsev\cmsAuthorMark40, Y. Skovpen\cmsAuthorMark40 \cmsinstskip**Institute for High Energy Physics of National Research Centre ’Kurchatov Institute’, Protvino, Russia

** I. Azhgirey, I. Bayshev, S. Bitioukov, D. Elumakhov, A. Godizov, V. Kachanov, A. Kalinin, D. Konstantinov, P. Mandrik, V. Petrov, R. Ryutin, S. Slabospitskii, A. Sobol, S. Troshin, N. Tyurin, A. Uzunian, A. Volkov \cmsinstskip**National Research Tomsk Polytechnic University, Tomsk, Russia

** A. Babaev, S. Baidali, V. Okhotnikov \cmsinstskip**University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia

** P. Adzic\cmsAuthorMark41, P. Cirkovic, D. Devetak, M. Dordevic, J. Milosevic, M. Stojanovic \cmsinstskip**Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain

** J. Alcaraz Maestre, A. Álvarez Fernández, I. Bachiller, M. Barrio Luna, J.A. Brochero Cifuentes, M. Cerrada, N. Colino, B. De La Cruz, A. Delgado Peris, C. Fernandez Bedoya, J.P. Fernández Ramos, J. Flix, M.C. Fouz, O. Gonzalez Lopez, S. Goy Lopez, J.M. Hernandez, M.I. Josa, D. Moran, A. Pérez-Calero Yzquierdo, J. Puerta Pelayo, I. Redondo, L. Romero, M.S. Soares, A. Triossi \cmsinstskip**Universidad Autónoma de Madrid, Madrid, Spain

** C. Albajar, J.F. de Trocóniz \cmsinstskip**Universidad de Oviedo, Oviedo, Spain

** J. Cuevas, C. Erice, J. Fernandez Menendez, S. Folgueras, I. Gonzalez Caballero, J.R. González Fernández, E. Palencia Cortezon, V. Rodríguez Bouza, S. Sanchez Cruz, P. Vischia, J.M. Vizan Garcia \cmsinstskip**Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain

** I.J. Cabrillo, A. Calderon, B. Chazin Quero, J. Duarte Campderros, M. Fernandez, P.J. Fernández Manteca, A. García Alonso, J. Garcia-Ferrero, G. Gomez, A. Lopez Virto, J. Marco, C. Martinez Rivero, P. Martinez Ruiz del Arbol, F. Matorras, J. Piedra Gomez, C. Prieels, T. Rodrigo, A. Ruiz-Jimeno, L. Scodellaro, N. Trevisani, I. Vila, R. Vilar Cortabitarte \cmsinstskip**University of Ruhuna, Department of Physics, Matara, Sri Lanka

** N. Wickramage \cmsinstskip**CERN, European Organization for Nuclear Research, Geneva, Switzerland

** D. Abbaneo, B. Akgun, E. Auffray, G. Auzinger, P. Baillon, A.H. Ball, D. Barney, J. Bendavid, M. Bianco, A. Bocci, C. Botta, E. Brondolin, T. Camporesi, M. Cepeda, G. Cerminara, E. Chapon, Y. Chen, G. Cucciati, D. d’Enterria, A. Dabrowski, N. Daci, V. Daponte, A. David, A. De Roeck, N. Deelen, M. Dobson, M. Dünser, N. Dupont, A. Elliott-Peisert, P. Everaerts, F. Fallavollita\cmsAuthorMark42, D. Fasanella, G. Franzoni, J. Fulcher, W. Funk, D. Gigi, A. Gilbert, K. Gill, F. Glege, M. Guilbaud, D. Gulhan, J. Hegeman, C. Heidegger, V. Innocente, A. Jafari, P. Janot, O. Karacheban\cmsAuthorMark18, J. Kieseler, A. Kornmayer, M. Krammer\cmsAuthorMark1, C. Lange, P. Lecoq, C. Lourenço, L. Malgeri, M. Mannelli, F. Meijers, J.A. Merlin, S. Mersi, E. Meschi, P. Milenovic\cmsAuthorMark43, F. Moortgat, M. Mulders, J. Ngadiuba, S. Nourbakhsh, S. Orfanelli, L. Orsini, F. Pantaleo\cmsAuthorMark15, L. Pape, E. Perez, M. Peruzzi, A. Petrilli, G. Petrucciani, A. Pfeiffer, M. Pierini, F.M. Pitters, D. Rabady, A. Racz, T. Reis, G. Rolandi\cmsAuthorMark44, M. Rovere, H. Sakulin, C. Schäfer, C. Schwick, M. Seidel, M. Selvaggi, A. Sharma, P. Silva, P. Sphicas\cmsAuthorMark45, A. Stakia, J. Steggemann, M. Tosi, D. Treille, A. Tsirou, V. Veckalns\cmsAuthorMark46, M. Verzetti, W.D. Zeuner \cmsinstskip**Paul Scherrer Institut, Villigen, Switzerland

** L. Caminada\cmsAuthorMark47, K. Deiters, W. Erdmann, R. Horisberger, Q. Ingram, H.C. Kaestli, D. Kotlinski, U. Langenegger, T. Rohe, S.A. Wiederkehr \cmsinstskip**ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland

** M. Backhaus, L. Bäni, P. Berger, N. Chernyavskaya, G. Dissertori, M. Dittmar, M. Donegà, C. Dorfer, T.A. Gómez Espinosa, C. Grab, D. Hits, T. Klijnsma, W. Lustermann, R.A. Manzoni, M. Marionneau, M.T. Meinhard, F. Micheli, P. Musella, F. Nessi-Tedaldi, J. Pata, F. Pauss, G. Perrin, L. Perrozzi, S. Pigazzini, M. Quittnat, C. Reissel, D. Ruini, D.A. Sanz Becerra, M. Schönenberger, L. Shchutska, V.R. Tavolaro, K. Theofilatos, M.L. Vesterbacka Olsson, R. Wallny, D.H. Zhu \cmsinstskip**Universität Zürich, Zurich, Switzerland

** T.K. Aarrestad, C. Amsler\cmsAuthorMark48, D. Brzhechko, M.F. Canelli, A. De Cosa, R. Del Burgo, S. Donato, C. Galloni, T. Hreus, B. Kilminster, S. Leontsinis, I. Neutelings, G. Rauco, P. Robmann, D. Salerno, K. Schweiger, C. Seitz, Y. Takahashi, A. Zucchetta \cmsinstskip**National Central University, Chung-Li, Taiwan

** Y.H. Chang, K.y. Cheng, T.H. Doan, R. Khurana, C.M. Kuo, W. Lin, A. Pozdnyakov, S.S. Yu \cmsinstskip**National Taiwan University (NTU), Taipei, Taiwan

** P. Chang, Y. Chao, K.F. Chen, P.H. Chen, W.-S. Hou, Arun Kumar, Y.F. Liu, R.-S. Lu, E. Paganis, A. Psallidas, A. Steen \cmsinstskip**Chulalongkorn University, Faculty of Science, Department of Physics, Bangkok, Thailand

** B. Asavapibhop, N. Srimanobhas, N. Suwonjandee \cmsinstskip**Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey

** A. Bat, F. Boran, S. Damarseckin, Z.S. Demiroglu, F. Dolek, C. Dozen, I. Dumanoglu, E. Eskut, S. Girgis, G. Gokbulut, Y. Guler, E. Gurpinar, I. Hos\cmsAuthorMark49, C. Isik, E.E. Kangal\cmsAuthorMark50, O. Kara, A. Kayis Topaksu, U. Kiminsu, M. Oglakci, G. Onengut, K. Ozdemir\cmsAuthorMark51, A. Polatoz, D. Sunar Cerci\cmsAuthorMark52, B. Tali\cmsAuthorMark52, U.G. Tok, S. Turkcapar, I.S. Zorbakir, C. Zorbilmez \cmsinstskip**Middle East Technical University, Physics Department, Ankara, Turkey

** B. Isildak\cmsAuthorMark53, G. Karapinar\cmsAuthorMark54, M. Yalvac, M. Zeyrek \cmsinstskip**Bogazici University, Istanbul, Turkey

** I.O. Atakisi, E. Gülmez, M. Kaya\cmsAuthorMark55, O. Kaya\cmsAuthorMark56, S. Ozkorucuklu\cmsAuthorMark57, S. Tekten, E.A. Yetkin\cmsAuthorMark58 \cmsinstskip**Istanbul Technical University, Istanbul, Turkey

** M.N. Agaras, A. Cakir, K. Cankocak, Y. Komurcu, S. Sen\cmsAuthorMark59 \cmsinstskip**Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkov, Ukraine

** B. Grynyov \cmsinstskip**National Scientific Center, Kharkov Institute of Physics and Technology, Kharkov, Ukraine

** L. Levchuk \cmsinstskip**University of Bristol, Bristol, United Kingdom

** F. Ball, L. Beck, J.J. Brooke, D. Burns, E. Clement, D. Cussans, O. Davignon, H. Flacher, J. Goldstein, G.P. Heath, H.F. Heath, L. Kreczko, D.M. Newbold\cmsAuthorMark60, S. Paramesvaran, B. Penning, T. Sakuma, D. Smith, V.J. Smith, J. Taylor, A. Titterton \cmsinstskip**Rutherford Appleton Laboratory, Didcot, United Kingdom

** A. Belyaev\cmsAuthorMark61, C. Brew, R.M. Brown, D. Cieri, D.J.A. Cockerill, J.A. Coughlan, K. Harder, S. Harper, J. Linacre, E. Olaiya, D. Petyt, C.H. Shepherd-Themistocleous, A. Thea, I.R. Tomalin, T. Williams, W.J. Womersley \cmsinstskip**Imperial College, London, United Kingdom

** R. Bainbridge, P. Bloch, J. Borg, S. Breeze, O. Buchmuller, A. Bundock, D. Colling, P. Dauncey, G. Davies, M. Della Negra, R. Di Maria, Y. Haddad, G. Hall, G. Iles, T. James, M. Komm, C. Laner, L. Lyons, A.-M. Magnan, S. Malik, A. Martelli, J. Nash\cmsAuthorMark62, A. Nikitenko\cmsAuthorMark7, V. Palladino, M. Pesaresi, D.M. Raymond, A. Richards, A. Rose, E. Scott, C. Seez, A. Shtipliyski, G. Singh, M. Stoye, T. Strebler, S. Summers, A. Tapper, K. Uchida, T. Virdee\cmsAuthorMark15, N. Wardle, D. Winterbottom, J. Wright, S.C. Zenz \cmsinstskip**Brunel University, Uxbridge, United Kingdom

** J.E. Cole, P.R. Hobson, A. Khan, P. Kyberd, C.K. Mackay, A. Morton, I.D. Reid, L. Teodorescu, S. Zahid \cmsinstskip**Baylor University, Waco, USA

** K. Call, J. Dittmann, K. Hatakeyama, H. Liu, C. Madrid, B. Mcmaster, N. Pastika, C. Smith \cmsinstskip**Catholic University of America, Washington, DC, USA

** R. Bartek, A. Dominguez \cmsinstskip**The University of Alabama, Tuscaloosa, USA

** A. Buccilli, S.I. Cooper, C. Henderson, P. Rumerio, C. West \cmsinstskip**Boston University, Boston, USA

** D. Arcaro, T. Bose, D. Gastler, D. Pinna, D. Rankin, C. Richardson, J. Rohlf, L. Sulak, D. Zou \cmsinstskip**Brown University, Providence, USA

** G. Benelli, X. Coubez, D. Cutts, M. Hadley, J. Hakala, U. Heintz, J.M. Hogan\cmsAuthorMark63, K.H.M. Kwok, E. Laird, G. Landsberg, J. Lee, Z. Mao, M. Narain, S. Sagir\cmsAuthorMark64, R. Syarif, E. Usai, D. Yu \cmsinstskip**University of California, Davis, Davis, USA

** R. Band, C. Brainerd, R. Breedon, D. Burns, M. Calderon De La Barca Sanchez, M. Chertok, J. Conway, R. Conway, P.T. Cox, R. Erbacher, C. Flores, G. Funk, W. Ko, O. Kukral, R. Lander, M. Mulhearn, D. Pellett, J. Pilot, S. Shalhout, M. Shi, D. Stolp, D. Taylor, K. Tos, M. Tripathi, Z. Wang, F. Zhang \cmsinstskip**University of California, Los Angeles, USA

** M. Bachtis, C. Bravo, R. Cousins, A. Dasgupta, A. Florent, J. Hauser, M. Ignatenko, N. Mccoll, S. Regnard, D. Saltzberg, C. Schnaible, V. Valuev \cmsinstskip**University of California, Riverside, Riverside, USA

** E. Bouvier, K. Burt, R. Clare, J.W. Gary, S.M.A. Ghiasi Shirazi, G. Hanson, G. Karapostoli, E. Kennedy, F. Lacroix, O.R. Long, M. Olmedo Negrete, M.I. Paneva, W. Si, L. Wang, H. Wei, S. Wimpenny, B.R. Yates \cmsinstskip**University of California, San Diego, La Jolla, USA

** J.G. Branson, P. Chang, S. Cittolin, M. Derdzinski, R. Gerosa, D. Gilbert, B. Hashemi, A. Holzner, D. Klein, G. Kole, V. Krutelyov, J. Letts, M. Masciovecchio, D. Olivito, S. Padhi, M. Pieri, M. Sani, V. Sharma, S. Simon, M. Tadel, A. Vartak, S. Wasserbaech\cmsAuthorMark65, J. Wood, F. Würthwein, A. Yagil, G. Zevi Della Porta \cmsinstskip**University of California, Santa Barbara - Department of Physics, Santa Barbara, USA

** N. Amin, R. Bhandari, J. Bradmiller-Feld, C. Campagnari, M. Citron, A. Dishaw, V. Dutta, M. Franco Sevilla, L. Gouskos, R. Heller, J. Incandela, A. Ovcharova, H. Qu, J. Richman, D. Stuart, I. Suarez, S. Wang, J. Yoo \cmsinstskip**California Institute of Technology, Pasadena, USA

** D. Anderson, A. Bornheim, J.M. Lawhorn, H.B. Newman, T.Q. Nguyen, M. Spiropulu, J.R. Vlimant, R. Wilkinson, S. Xie, Z. Zhang, R.Y. Zhu \cmsinstskip**Carnegie Mellon University, Pittsburgh, USA

** M.B. Andrews, T. Ferguson, T. Mudholkar, M. Paulini, M. Sun, I. Vorobiev, M. Weinberg \cmsinstskip**University of Colorado Boulder, Boulder, USA

** J.P. Cumalat, W.T. Ford, F. Jensen, A. Johnson, M. Krohn, E. MacDonald, T. Mulholland, R. Patel, A. Perloff, K. Stenson, K.A. Ulmer, S.R. Wagner \cmsinstskip**Cornell University, Ithaca, USA

** J. Alexander, J. Chaves, Y. Cheng, J. Chu, A. Datta, K. Mcdermott, N. Mirman, J.R. Patterson, D. Quach, A. Rinkevicius, A. Ryd, L. Skinnari, L. Soffi, S.M. Tan, Z. Tao, J. Thom, J. Tucker, P. Wittich, M. Zientek \cmsinstskip**Fermi National Accelerator Laboratory, Batavia, USA

** S. Abdullin, M. Albrow, M. Alyari, G. Apollinari, A. Apresyan, A. Apyan, S. Banerjee, L.A.T. Bauerdick, A. Beretvas, J. Berryhill, P.C. Bhat, K. Burkett, J.N. Butler, A. Canepa, G.B. Cerati, H.W.K. Cheung, F. Chlebana, M. Cremonesi, J. Duarte, V.D. Elvira, J. Freeman, Z. Gecse, E. Gottschalk, L. Gray, D. Green, S. Grünendahl, O. Gutsche, J. Hanlon, R.M. Harris, S. Hasegawa, J. Hirschauer, Z. Hu, B. Jayatilaka, S. Jindariani, M. Johnson, U. Joshi, B. Klima, M.J. Kortelainen, B. Kreis, S. Lammel, D. Lincoln, R. Lipton, M. Liu, T. Liu, J. Lykken, K. Maeshima, J.M. Marraffino, D. Mason, P. McBride, P. Merkel, S. Mrenna, S. Nahn, V. O’Dell, K. Pedro, C. Pena, O. Prokofyev, G. Rakness, L. Ristori, A. Savoy-Navarro\cmsAuthorMark66, B. Schneider, E. Sexton-Kennedy, A. Soha, W.J. Spalding, L. Spiegel, S. Stoynev, J. Strait, N. Strobbe, L. Taylor, S. Tkaczyk, N.V. Tran, L. Uplegger, E.W. Vaandering, C. Vernieri, M. Verzocchi, R. Vidal, M. Wang, H.A. Weber, A. Whitbeck \cmsinstskip**University of Florida, Gainesville, USA

** D. Acosta, P. Avery, P. Bortignon, D. Bourilkov, A. Brinkerhoff, L. Cadamuro, A. Carnes, M. Carver, D. Curry, R.D. Field, S.V. Gleyzer, B.M. Joshi, J. Konigsberg, A. Korytov, K.H. Lo, P. Ma, K. Matchev, H. Mei, G. Mitselmakher, D. Rosenzweig, K. Shi, D. Sperka, J. Wang, S. Wang, X. Zuo \cmsinstskip**Florida International University, Miami, USA

** Y.R. Joshi, S. Linn \cmsinstskip**Florida State University, Tallahassee, USA

** A. Ackert, T. Adams, A. Askew, S. Hagopian, V. Hagopian, K.F. Johnson, T. Kolberg, G. Martinez, T. Perry, H. Prosper, A. Saha, C. Schiber, R. Yohay \cmsinstskip**Florida Institute of Technology, Melbourne, USA

** M.M. Baarmand, V. Bhopatkar, S. Colafranceschi, M. Hohlmann, D. Noonan, M. Rahmani, T. Roy, F. Yumiceva \cmsinstskip**University of Illinois at Chicago (UIC), Chicago, USA

** M.R. Adams, L. Apanasevich, D. Berry, R.R. Betts, R. Cavanaugh, X. Chen, S. Dittmer, O. Evdokimov, C.E. Gerber, D.A. Hangal, D.J. Hofman, K. Jung, J. Kamin, C. Mills, I.D. Sandoval Gonzalez, M.B. Tonjes, H. Trauger, N. Varelas, H. Wang, X. Wang, Z. Wu, J. Zhang \cmsinstskip**The University of Iowa, Iowa City, USA

** M. Alhusseini, B. Bilki\cmsAuthorMark67, W. Clarida, K. Dilsiz\cmsAuthorMark68, S. Durgut, R.P. Gandrajula, M. Haytmyradov, V. Khristenko, J.-P. Merlo, A. Mestvirishvili, A. Moeller, J. Nachtman, H. Ogul\cmsAuthorMark69, Y. Onel, F. Ozok\cmsAuthorMark70, A. Penzo, C. Snyder, E. Tiras, J. Wetzel \cmsinstskip**Johns Hopkins University, Baltimore, USA

** B. Blumenfeld, A. Cocoros, N. Eminizer, D. Fehling, L. Feng, A.V. Gritsan, W.T. Hung, P. Maksimovic, J. Roskes, U. Sarica, M. Swartz, M. Xiao, C. You \cmsinstskip**The University of Kansas, Lawrence, USA

** A. Al-bataineh, P. Baringer, A. Bean, S. Boren, J. Bowen, A. Bylinkin, J. Castle, S. Khalil, A. Kropivnitskaya, D. Majumder, W. Mcbrayer, M. Murray, C. Rogan, S. Sanders, E. Schmitz, J.D. Tapia Takaki, Q. Wang \cmsinstskip**Kansas State University, Manhattan, USA

** S. Duric, A. Ivanov, K. Kaadze, D. Kim, Y. Maravin, D.R. Mendis, T. Mitchell, A. Modak, A. Mohammadi, L.K. Saini, N. Skhirtladze \cmsinstskip**Lawrence Livermore National Laboratory, Livermore, USA

** F. Rebassoo, D. Wright \cmsinstskip**University of Maryland, College Park, USA

** A. Baden, O. Baron, A. Belloni, S.C. Eno, Y. Feng, C. Ferraioli, N.J. Hadley, S. Jabeen, G.Y. Jeng, R.G. Kellogg, J. Kunkle, A.C. Mignerey, S. Nabili, F. Ricci-Tam, Y.H. Shin, A. Skuja, S.C. Tonwar, K. Wong \cmsinstskip**Massachusetts Institute of Technology, Cambridge, USA

** D. Abercrombie, B. Allen, V. Azzolini, A. Baty, G. Bauer, R. Bi, S. Brandt, W. Busza, I.A. Cali, M. D’Alfonso, Z. Demiragli, G. Gomez Ceballos, M. Goncharov, P. Harris, D. Hsu, M. Hu, Y. Iiyama, G.M. Innocenti, M. Klute, D. Kovalskyi, Y.-J. Lee, P.D. Luckey, B. Maier, A.C. Marini, C. Mcginn, C. Mironov, S. Narayanan, X. Niu, C. Paus, C. Roland, G. Roland, G.S.F. Stephans, K. Sumorok, K. Tatar, D. Velicanu, J. Wang, T.W. Wang, B. Wyslouch, S. Zhaozhong \cmsinstskip**University of Minnesota, Minneapolis, USA

** A.C. Benvenuti${}^{\textrm{\textdagger}}$, R.M. Chatterjee, A. Evans, P. Hansen, Sh. Jain, S. Kalafut, Y. Kubota, Z. Lesko, J. Mans, N. Ruckstuhl, R. Rusack, J. Turkewitz, M.A. Wadud \cmsinstskip**University of Mississippi, Oxford, USA

** J.G. Acosta, S. Oliveros \cmsinstskip**University of Nebraska-Lincoln, Lincoln, USA

** E. Avdeeva, K. Bloom, D.R. Claes, C. Fangmeier, F. Golf, R. Gonzalez Suarez, R. Kamalieddin, I. Kravchenko, J. Monroy, J.E. Siado, G.R. Snow, B. Stieger \cmsinstskip**State University of New York at Buffalo, Buffalo, USA

** A. Godshalk, C. Harrington, I. Iashvili, A. Kharchilava, C. Mclean, D. Nguyen, A. Parker, S. Rappoccio, B. Roozbahani \cmsinstskip**Northeastern University, Boston, USA

** G. Alverson, E. Barberis, C. Freer, A. Hortiangtham, D.M. Morse, T. Orimoto, R. Teixeira De Lima, T. Wamorkar, B. Wang, A. Wisecarver, D. Wood \cmsinstskip**Northwestern University, Evanston, USA

** S. Bhattacharya, O. Charaf, K.A. Hahn, N. Mucia, N. Odell, M.H. Schmitt, K. Sung, M. Trovato, M. Velasco \cmsinstskip**University of Notre Dame, Notre Dame, USA

** R. Bucci, N. Dev, M. Hildreth, K. Hurtado Anampa, C. Jessop, D.J. Karmgard, N. Kellams, K. Lannon, W. Li, N. Loukas, N. Marinelli, F. Meng, C. Mueller, Y. Musienko\cmsAuthorMark34, M. Planer, A. Reinsvold, R. Ruchti, P. Siddireddy, G. Smith, S. Taroni, M. Wayne, A. Wightman, M. Wolf, A. Woodard \cmsinstskip**The Ohio State University, Columbus, USA

** J. Alimena, L. Antonelli, B. Bylsma, L.S. Durkin, S. Flowers, B. Francis, A. Hart, C. Hill, W. Ji, T.Y. Ling, W. Luo, B.L. Winer \cmsinstskip**Princeton University, Princeton, USA

** S. Cooperstein, P. Elmer, J. Hardenbrook, S. Higginbotham, A. Kalogeropoulos, D. Lange, M.T. Lucchini, J. Luo, D. Marlow, K. Mei, I. Ojalvo, J. Olsen, C. Palmer, P. Piroué, J. Salfeld-Nebgen, D. Stickland, C. Tully \cmsinstskip**University of Puerto Rico, Mayaguez, USA

** S. Malik, S. Norberg \cmsinstskip**Purdue University, West Lafayette, USA

** A. Barker, V.E. Barnes, S. Das, L. Gutay, M. Jones, A.W. Jung, A. Khatiwada, B. Mahakud, D.H. Miller, N. Neumeister, C.C. Peng, S. Piperov, H. Qiu, J.F. Schulte, J. Sun, F. Wang, R. Xiao, W. Xie \cmsinstskip**Purdue University Northwest, Hammond, USA

** T. Cheng, J. Dolen, N. Parashar \cmsinstskip**Rice University, Houston, USA

** Z. Chen, K.M. Ecklund, S. Freed, F.J.M. Geurts, M. Kilpatrick, W. Li, B.P. Padley, R. Redjimi, J. Roberts, J. Rorie, W. Shi, Z. Tu, J. Zabel, A. Zhang \cmsinstskip**University of Rochester, Rochester, USA

** A. Bodek, P. de Barbaro, R. Demina, Y.t. Duh, J.L. Dulemba, C. Fallon, T. Ferbel, M. Galanti, A. Garcia-Bellido, J. Han, O. Hindrichs, A. Khukhunaishvili, P. Tan, R. Taus \cmsinstskip**Rutgers, The State University of New Jersey, Piscataway, USA

** A. Agapitos, J.P. Chou, Y. Gershtein, E. Halkiadakis, M. Heindl, E. Hughes, S. Kaplan, R. Kunnawalkam Elayavalli, S. Kyriacou, A. Lath, R. Montalvo, K. Nash, M. Osherson, H. Saka, S. Salur, S. Schnetzer, D. Sheffield, S. Somalwar, R. Stone, S. Thomas, P. Thomassen, M. Walker \cmsinstskip**University of Tennessee, Knoxville, USA

** A.G. Delannoy, J. Heideman, G. Riley, S. Spanier \cmsinstskip**Texas A&M University, College Station, USA

** O. Bouhali\cmsAuthorMark71, A. Celik, M. Dalchenko, M. De Mattia, A. Delgado, S. Dildick, R. Eusebi, J. Gilmore, T. Huang, T. Kamon\cmsAuthorMark72, S. Luo, R. Mueller, D. Overton, L. Perniè, D. Rathjens, A. Safonov \cmsinstskip**Texas Tech University, Lubbock, USA

** N. Akchurin, J. Damgov, F. De Guio, P.R. Dudero, S. Kunori, K. Lamichhane, S.W. Lee, T. Mengke, S. Muthumuni, T. Peltola, S. Undleeb, I. Volobouev, Z. Wang \cmsinstskip**Vanderbilt University, Nashville, USA

** S. Greene, A. Gurrola, R. Janjam, W. Johns, C. Maguire, A. Melo, H. Ni, K. Padeken, J.D. Ruiz Alvarez, P. Sheldon, S. Tuo, J. Velkovska, M. Verweij, Q. Xu \cmsinstskip**University of Virginia, Charlottesville, USA

** M.W. Arenton, P. Barria, B. Cox, R. Hirosky, M. Joyce, A. Ledovskoy, H. Li, C. Neu, T. Sinthuprasith, Y. Wang, E. Wolfe, F. Xia \cmsinstskip**Wayne State University, Detroit, USA

** R. Harr, P.E. Karchin, N. Poudyal, J. Sturdy, P. Thapa, S. Zaleski \cmsinstskip**University of Wisconsin - Madison, Madison, WI, USA

** M. Brodski, J. Buchanan, C. Caillol, D. Carlsmith, S. Dasu, L. Dodd, B. Gomber, M. Grothe, M. Herndon, A. Hervé, U. Hussain, P. Klabbers, A. Lanaro, K. Long, R. Loveless, T. Ruggles, A. Savin, V. Sharma, N. Smith, W.H. Smith, N. Woods \cmsinstskip†: Deceased

1: Also at Vienna University of Technology, Vienna, Austria

2: Also at IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France

3: Also at Universidade Estadual de Campinas, Campinas, Brazil

4: Also at Federal University of Rio Grande do Sul, Porto Alegre, Brazil

5: Also at Université Libre de Bruxelles, Bruxelles, Belgium

6: Also at University of Chinese Academy of Sciences, Beijing, China

7: Also at Institute for Theoretical and Experimental Physics, Moscow, Russia

8: Also at Joint Institute for Nuclear Research, Dubna, Russia

9: Now at Cairo University, Cairo, Egypt

10: Also at Fayoum University, El-Fayoum, Egypt

11: Now at British University in Egypt, Cairo, Egypt

12: Also at Department of Physics, King Abdulaziz University, Jeddah, Saudi Arabia

13: Also at Université de Haute Alsace, Mulhouse, France

14: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, Russia

15: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland

16: Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany

17: Also at University of Hamburg, Hamburg, Germany

18: Also at Brandenburg University of Technology, Cottbus, Germany

19: Also at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary

20: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary

21: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary

22: Also at Indian Institute of Technology Bhubaneswar, Bhubaneswar, India

23: Also at Institute of Physics, Bhubaneswar, India

24: Also at Shoolini University, Solan, India

25: Also at University of Visva-Bharati, Santiniketan, India

26: Also at Isfahan University of Technology, Isfahan, Iran

27: Also at Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran

28: Also at Università degli Studi di Siena, Siena, Italy

29: Also at Kyunghee University, Seoul, Korea

30: Also at International Islamic University of Malaysia, Kuala Lumpur, Malaysia

31: Also at Malaysian Nuclear Agency, MOSTI, Kajang, Malaysia

32: Also at Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico

33: Also at Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland

34: Also at Institute for Nuclear Research, Moscow, Russia

35: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’ (MEPhI), Moscow, Russia

36: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia

37: Also at University of Florida, Gainesville, USA

38: Also at P.N. Lebedev Physical Institute, Moscow, Russia

39: Also at INFN Sezione di Padova a, Università di Padova b, Università di Trento (Trento) c, Padova, Italy

40: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia

41: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia

42: Also at INFN Sezione di Pavia a, Università di Pavia b, Pavia, Italy

43: Also at University of Belgrade, Faculty of Physics and Vinca Institute of Nuclear Sciences, Belgrade, Serbia

44: Also at Scuola Normale e Sezione dell’INFN, Pisa, Italy

45: Also at National and Kapodistrian University of Athens, Athens, Greece

46: Also at Riga Technical University, Riga, Latvia

47: Also at Universität Zürich, Zurich, Switzerland

48: Also at Stefan Meyer Institute for Subatomic Physics (SMI), Vienna, Austria

49: Also at Istanbul Aydin University, Istanbul, Turkey

50: Also at Mersin University, Mersin, Turkey

51: Also at Piri Reis University, Istanbul, Turkey

52: Also at Adiyaman University, Adiyaman, Turkey

53: Also at Ozyegin University, Istanbul, Turkey

54: Also at Izmir Institute of Technology, Izmir, Turkey

55: Also at Marmara University, Istanbul, Turkey

56: Also at Kafkas University, Kars, Turkey

57: Also at Istanbul University, Faculty of Science, Istanbul, Turkey

58: Also at Istanbul Bilgi University, Istanbul, Turkey

59: Also at Hacettepe University, Ankara, Turkey

60: Also at Rutherford Appleton Laboratory, Didcot, United Kingdom

61: Also at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom

62: Also at Monash University, Faculty of Science, Clayton, Australia

63: Also at Bethel University, St. Paul, USA

64: Also at Karamanoğlu Mehmetbey University, Karaman, Turkey

65: Also at Utah Valley University, Orem, USA

66: Also at Purdue University, West Lafayette, USA

67: Also at Beykent University, Istanbul, Turkey

68: Also at Bingol University, Bingol, Turkey

69: Also at Sinop University, Sinop, Turkey

70: Also at Mimar Sinan University, Istanbul, Istanbul, Turkey

71: Also at Texas A&M University at Qatar, Doha, Qatar

72: Also at Kyungpook National University, Daegu, Korea