Measurements of angular distance and momentum ratio distributions in three-jet and Z + two-jet final states in pp collisions
EEUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)
CERN-EP-2020-2512021/02/18
CMS-SMP-17-008
Measurements of angular distance and momentum ratiodistributions in three-jet and Z + two-jet final states in ppcollisions
The CMS Collaboration * Abstract
Collinear (small-angle) and large-angle, as well as soft and hard radiations are in-vestigated in three-jet and Z + two-jet events collected in proton-proton collisions atthe LHC. The normalized production cross sections are measured as a function of theratio of transverse momenta of two jets and their angular separation. The measure-ments in the three-jet and Z + two-jet events are based on data collected at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.8 fb − . TheZ + two-jet events are reconstructed in the dimuon decay channel of the Z boson.The three-jet measurement is extended to include √ s =
13 TeV data correspondingto an integrated luminosity of 2.3 fb − . The results are compared to predictions fromevent generators that include parton showers, multiple parton interactions, and had-ronization. The collinear and soft regions are in general well described by partonshowers, whereas the regions of large angular separation are often best described bycalculations using higher-order matrix elements. Submitted to the European Physical Journal C © 2021 CERN for the benefit of the CMS Collaboration. CC-BY-4.0 license * See Appendix A for the list of collaboration members a r X i v : . [ h e p - e x ] F e b Collimated streams of particles, produced in interactions of quarks and gluons and recon-structed as jets, are described by the theory of strong interactions, quantum chromodynamics(QCD). Multijet events provide exemplary signatures in high-energy collider experiments, andmodeling their characteristics plays an important role in precision measurements, as well as insearches for new physics. The understanding of the structure of multijet final states is thereforecrucial for analyses of those events.Theoretical predictions for multijet events are based on a matrix element (ME) expansion to afixed perturbative order, supplemented by the parton shower (PS) approach to approximatehigher-order perturbative contributions. The ME expansion incorporates color correlations be-tween quarks and gluons, including interference terms, as well as kinematic correlations be-tween the partons, without any approximation at fixed perturbative order. Its application is,however, currently limited to final states with just a few partons. The PS can simulate finalstates containing many partons, but with probabilities calculated using the approximations ofsoft and collinear kinematics and partial or averaged color structures. The best descriptions ofmultijet final states are based on a combination of both approaches [1–4]. Other features im-plemented in simulations, such as multiple parton interactions (MPI) and hadronization, alsoplay an important role, e.g., in describing angular correlations between jets [5–7].In this paper, we investigate collinear (small-angle) and large-angle radiation in different re-gions of jet transverse momentum ( p T ) by concentrating on two different topologies, one usingthree-jet events and another with Z + two-jet events. We label the hardest jet, or Z boson as j ,the next hardest as j , and the softest as j . We introduce two observables that are sensitive tothe dynamic properties of multijet final states. One observable is the p T ratio of j to j , p T3 / p T2 .The other observable is the angular distance between the jet centers of j and j in the rapidity-azimuth ( y - φ ) phase space, ∆ R = √ ( y − y ) + ( φ − φ ) . As indicated in Fig. 1, we classifythree-jet and Z + two-jet events into different categories using these two observables:(i) soft ( p T3 / p T2 < p T3 / p T2 > p T3 / p T2 ;(ii) small-angle ( ∆ R < ∆ R > ∆ R .According to these classifications, events in the soft and small-angle radiation region, as shownin Fig. 1 (a), should be better described when including the PS approach, while events in thehard and large-angle radiation region, as shown in Fig. 1 (d), would be better described whenincluding the ME calculations. The events in Figs. 1 (b) and (c) are also of interest, since theyshould include effects from both the PS and ME.We report on proton-proton (pp) collision data collected at the CMS experiment containingthree-jet events at center-of-mass energies of 8 and 13 TeV, and Z + two-jet events at a center-of-mass energy of 8 TeV. The measurements are compared to calculations based on a leading-order (LO) or next-to-leading-order (NLO) ME supplemented with effects from PS, MPI, andhadronization. The measurements using three-jet final states are complementary to those withZ + two-jet events in a sense that different kinematic regions and initial-state flavor compo-sitions are being probed. The jets are also fully color connected, while the Z boson is colorneutral, so color coherence effects should not appear so strongly in Z + two-jet events.The goal of the measurements is: (i) to untangle the different features of the radiation in thecollinear and large-angle events; (ii) to investigate how well the PS approach describes the hard and large-angle radiation patterns; and (iii) to determine how effectively the ME calculationsdescribe the soft and collinear events. Soft radiation( p T3 / p T2 < p T3 / p T2 > ∆ R < ∆ R > j j j Figure 1: Four categories of parton radiation. (a) soft and small-angle radiation, (b) hard andsmall-angle radiation, (c) soft and large-angle radiation, (d) hard and large-angle radiation.
The central feature of the CMS detector is a superconducting solenoid of 6 m internal diameter,providing a magnetic field of 3.8 T. A silicon pixel and strip tracker, a lead tungstate crystalelectromagnetic calorimeter (ECAL), and a brass and scintillator hadron calorimeter (HCAL),each composed of a barrel and two endcap sections, reside within the volume of the solenoid.Charged-particle trajectories are measured in the tracker with full azimuthal acceptance withinpseudorapidities | η | < | η | < < | η | < | η | < µ s. The second level, known as the high-level trigger (HLT), consists of afarm of processors running a version of the full event reconstruction software optimized forfast processing, and reduces the event rate to around 1 kHz before data storage.A more detailed description of the CMS detector, together with a definition of the coordinatesystem and the kinematic variables, is given in Ref. [9]. The data in this study were collected with the CMS detector at the LHC using pp collisions atcenter-of-mass energies of 8 and 13 TeV. The √ s = − , and the √ s =
13 TeV data, taken in 2015during LHC Run 2, correspond to an integrated luminosity of 2.3 fb − .Particles are reconstructed and identified using a particle-flow (PF) algorithm [10], that uti-lizes an optimized combination of information from the various elements of the CMS detector. Jets are reconstructed by clustering the four-vectors of the PF candidates with the infrared andcollinear-safe anti- k T clustering algorithm [11] using a distance parameter R jet = √ s = ( ) TeV. The clustering is performed with the F
AST J ET software package [12]. In addi-tion, three-jet events use the charged-hadron subtraction (CHS) technique [10] to mitigate theeffect of extraneous pp collisions in the same bunch crossing (pileup, PU). The CHS techniquereduces the contribution to the reconstructed jets from PU by removing tracks identified asoriginating from PU vertices.Three-jet events are collected using single jet HLT requirements that are not pre-scaled. The √ s = ( ) TeV data use a 320 (450) GeV trigger p T threshold. In the offline analyses, the p T threshold starts at 510 GeV for both sets of data. The Z + two-jet events with the Z bosondecaying into a pair of muons are collected at √ s = p T >
24 GeV and | η | < p T >
510 GeV, because of a decreas-ing efficiency for single jet triggers below this value [8, 13, 14]. Events with at least three jetsof p T >
30 GeV are selected for further consideration. The leading and subleading jets must bewithin a rapidity range of | y | < | y | < ∆ R < π − < ∆ φ < π . The missing transverse momentum vector (cid:126) p missT is defined as the projectiononto the plane perpendicular to the beam axis of the negative vector sum of the momentumof all reconstructed PF objects in an event. Its magnitude is referred to as p missT . Events with a p missT divided by the scalar sum of all transverse momenta > j and j , ∆ R is requiredto be larger than the distance parameter R jet . We thus require ∆ R to be larger than 0.6 (0.5)for √ s = ( ) TeV data. The maximum ∆ R is set to 1.5 to ensure that j is closer to j than to j . We further require that 0.1 < p T3 / p T2 < p T3 threshold effects and to ensure p T ordering for hard radiation.In Z + two-jet events, the Z boson is reconstructed from a pair of oppositely charged muonswith p T > ( ) GeV and | y | < < m µ + µ − <
110 GeV with the dimuon momentum satisfying p T1 >
80 GeV and | y | <
2. At least two jets are required in the final state with the leading jet(labeled j ) satisfying p T2 >
80 GeV and | y | < j ) required tohave p T3 >
20 GeV with | y | < j of ∆ φ > Reconstructed data are compared to predictions from Monte Carlo (MC) event genera-tors, where the generated events are passed through a full detector simulation based onG
EANT √ s = AD -G RAPH [16] software package matched to
PYTHIA
PYTHIA AD G RAPH interfaced to
PYTHIA
PYTHIA
SHERPA [26] event generator interfaced to
CSSHOWER ++ [27]
Table 1: Phase space selection for the three-jet and Z + two-jet analyses.Three-jet eventsTransverse momentum of the leading jet ( j ) p T1 >
510 GeVTransverse momentum of each jet and rapidity of j p T >
30 GeV , | y | < j and j π − < ∆ φ < π Transverse momentum ratio between j and j < p T3 / p T2 < j and j R jet + < ∆ R < √ s = ( ) TeV 777,618 (613,254)Z + two-jet eventsTransverse momentum of the Z boson ( j ) p T1 >
80 GeV, | y | < j p T2 >
80 GeV , | y | < j p T3 >
20 GeV, | y | < j < | ∆ φ | < π Dimuon mass 70 < m µ + µ − <
110 GeVAngular distance between j and j < ∆ R < AD G RAPH interfaced to
PYTHIA √ s = AD G RAPH
PYTHIA
PYTHIA √ s =
13 TeVM AD G RAPH
PYTHIA
PYTHIA
SHERPA
CSSHOWER ++ CT10 AMISIC++M AD G RAPH
PYTHIA
PYTHIA
PYTHIA
LO 2j+PS” for the three-jet and as “
PYTHIA
LO Z+1j+PS” for Z + two-jet events. The PDF set NNPDF2.3LO and theCUETP8M1 parameter set for the simulation of the UE are used with free parameters adjustedto measurements in pp collisions at the LHC and proton-antiproton collisions at the FermilabTevatron. The Lund string model [30] is applied for the hadronization process.The M AD G RAPH MC @ NLO event generator, labeled as “M AD G RAPH ” in the following, isused to simulate hard processes with up to 4 final-state partons at LO accuracy. It is interfacedto
PYTHIA
PYTHIA AD G RAPH
LO 4j+PS” and the Z + two-jet sample is labeled as “M AD G RAPH
LO Z+4j+PS”. The k T -MLM procedure [31]is used to match jets from the ME and PS with a matching scale of 10 GeV.Predictions are also included using the POWHEG BOX library [32–34], with the CT10 NLO [28]PDFs and with the
PYTHIA
POWHEG generator is run in the dijet mode [35] providing an NLO 2 → POWHEG
NLO 2j+PS”. The matching between the
POWHEG
ME calculations and the
PYTHIA
UE [25] simulation is performed using the shower-veto procedure (UserHook option2 [22]).The
SHERPA software package is used to simulate Z + two-jet events. The hard process iscalculated at LO for a ME with up to four final-state partons and the CT10 PDF set is used.This sample is labeled as “
SHERPA
LO Z+4j+PS”. The
SHERPA generator has its own PS [27],hadronization, and MPI tune [29].Finally, the M AD G RAPH MC @ NLO generator is also used in the MC @ NLO mode, providinga Z + one-jet ME at NLO accuracy. This event generator is interfaced to
PYTHIA
8, using theCUETP8M1 tune and the NNPDF3.0NLO [36] PDF set, to produce Z + two-jet events. Thesample is labeled as “a MC @ NLO
NLO Z+1j+PS”.Table 3: MC event generators and version numbers, parton-level processes, PDF sets, and UEtunes used for the comparison with measurements.
Event generator Parton-level process PDF set TuneThree-jet events
PYTHIA AD G RAPH
PYTHIA
POWHEG
PYTHIA
PYTHIA AD G RAPH
PYTHIA
SHERPA
CSSHOWER ++ LO Z+4j+PS CT10 AMISIC++a MC @ NLO + PYTHIA
To facilitate the comparison of data with theory, the data are unfolded from reconstruction tostable-particle level, defined by a mean decay length larger than 1 cm, so that measurementeffects are removed and that the true distributions in the observables are determined. The un-folding is performed using the D’Agostini algorithm [37] as implemented in the R OO U NFOLD software package [38] for three-jet events, while the singular value decomposition method [39]is used for Z + two-jet events. The response matrices are obtained from the full detector simu-lation using M AD G RAPH for three-jet events and
SHERPA for Z + two-jet events.The distributions are normalized to the integral of the spectra for three-jet events and to thenumber of inclusive Z + one-jet events in the Z + two-jet analysis. The Z + two-jet analysisnormalization thus reflects the probability to have more than one jet in the event.Systematic uncertainties associated to the jet energy scale (JES) calibration, the jet energy reso-lution (JER), PU modeling, model dependence, as well as the unfolding method, are estimated.Each uncertainty is quoted as the maximum change caused by the corresponding systematic effect.The systematic uncertainty from the JES is 0.15 (0.24)% at √ s = ( ) TeV for the three-jet caseand 5–10% for the Z + two-jet events. The JER observed in data differs from that obtainedfrom simulation and simulated jets are therefore smeared to obtain the same resolution as inthe data [40]. The systematic uncertainty from JER is estimated by varying the simulated JERuncertainty up and down by one standard deviation, which results in a systematic uncertaintyof 0.16 (0.12)% at √ s = ( ) TeV for three-jet and 2–3% for Z + two-jet events. When thedistributions of Z + two-jet events are normalized to the integrals of the histograms, instead ofthe number of Z + one-jet events, the systematic uncertainties due to the JES and JER decreaseto 0.3–0.5%, except for the p T3 / p T2 shape, which is still sensitive to the JES with changes of upto 3%.The distribution in the number of primary vertices is sensitive to PU and to differences inthe underlying event (UE) in data and simulation. To estimate the uncertainty due to the PUmodeling, the number of PU events in simulation is changed by shifting the total inelastic crosssection by ±
5% [41]. The resulting PU uncertainties are 0.10 (0.17)% at √ s = ( ) TeV for thethree-jet and 1% for the Z + two-jet events.The dependence on the event generator used for the unfolding is estimated with MC eventsamples from M AD G RAPH and
PYTHIA for three-jet, and
SHERPA and M AD G RAPH for the Z +two-jet events. The means of both sets of unfolded data are used as the nominal values. Thisuncertainty is ≈ √ s = ( ) TeV for the three-jet and 1% for the Z + two-jetevents, which is half of the difference between the results obtained with the respective eventgenerators. The difference in uncertainties comes mainly from the difference in the number ofevents in the corresponding simulated samples.Table 4 summarizes the systematic uncertainties in the measurements.Table 4: Systematic uncertainties in the measurements in %.Source three-jet 8/13 TeV Z + two-jet 8 TeVJet energy scale 0.15/0.24 5–10Jet energy resolution 0.16/0.12 2–3Pileup 0.1/0.17 1Unfolding and model dependence 1.1/0.25 1The systematic uncertainties from various sources are similar for the three-jet samples at √ s = √ s = p T range, and the Z + two-jet phase space has alower p T threshold than the one used in the three-jet events.The figures of Sec. 6 show the total systematic uncertainty as a band in the panels displayingthe ratio of predictions over data.The uncertainties in the PDF and in the renormalization and factorization scales are investi-gated for the POWHEG and a MC @ NLO models. Other theoretical predictions are expected tohave comparable uncertainties. The PDF uncertainties are estimated following the PDF4LHCrecipe [42], i.e., obtaining the variance in the predictions from changing the PDF at each point.The renormalization and factorization scales are varied by a factor 2 up and down, excludingthe (2,1/2) and (1/2,2) cases. Finally, the theoretical uncertainties are obtained as the quadraticsum of the PDF variance and the envelope of the scale variations, and displayed as a band around the theoretical predictions in the figures of Sec. 6.
We compare the distributions in the ratio p T3 / p T2 in data to predictions for events with small-angle ( ∆ R < ∆ R > ∆ R distri-butions in data to predictions with soft ( p T3 / p T2 < p T3 / p T2 > < p T3 / p T2 < We show the √ s = p T3 / p T2 in Fig. 2 and of ∆ R in Fig. 3, and comparethem to theoretical expectations. In Figs. 4 and 5 the distributions are given for √ s =
13 TeV.Figure 2 (left) shows the p T3 / p T2 distribution for the small ∆ R region. All predictions showsignificant deviations from the measurements. Interestingly, the LO 4j+PS prediction showsdifferent behavior compared with LO 2j+PS and NLO 2j+PS. We see that the number of partonsin the ME calculation and the merging method with the PS in the present simulations leadto different shapes of the predicted distributions. In Fig. 2 (right) the p T3 / p T2 distribution isshown for large ∆ R . This region of phase space is well described by the LO 4j+PS calculations,while the LO 2j+PS and NLO 2j+PS predictions show large deviations from the measurements. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a CMS (8 TeV) Three jet < 1.0 R ∆ > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (8 TeV) Three jet < 1.0 R ∆ > 510 GeV T1 p ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a CMS (8 TeV) Three jet > 1.0 R ∆ > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (8 TeV) Three jet > 1.0 R ∆ > 510 GeV T1 p Figure 2: Three-jet events at √ s = p T3 / p T2 for small-angleradiation ( ∆ R < p T3 / p T2 for large-angle radiation ( ∆ R > ∆ R distribution is shown for two regions of p T3 / p T2 . Figure 3 (left) shows p T3 / p T2 < ∆ R distribution is shown for p T3 / p T2 > √ s =
13 TeV measurements as shown in Figs. 4 and 5. A similarbehavior is observed for √ s = R ∆ dd N N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Three jet < 0.3 T2 /p T3 p > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. R ∆ dd N N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (8 TeV) Three jet < 0.3 T2 /p T3 p > 510 GeV T1 p R ∆ dd N N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Three jet > 0.6 T2 /p T3 p > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. R ∆ dd N N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (8 TeV) Three jet > 0.6 T2 /p T3 p > 510 GeV T1 p Figure 3: Three-jet events at √ s = ∆ R for soft radiation ( p T3 / p T2 < ∆ R for hard radiation ( p T3 / p T2 > p T3 / p T2 and the ∆ R distributions in three-jetevents. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a CMS (13 TeV) Three jet < 1.0 R ∆ > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (13 TeV) Three jet < 1.0 R ∆ > 510 GeV T1 p ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a CMS (13 TeV) Three jet > 1.0 R ∆ > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. ) T / p T d ( pd N N T2 /p T3 p0.80.911.11.21.3 P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (13 TeV) Three jet > 1.0 R ∆ > 510 GeV T1 p Figure 4: Three-jet events at √ s =
13 TeV compared to theory: (left) p T3 / p T2 for small-angleradiation ( ∆ R < p T3 / p T2 for large-angle radiation ( ∆ R > The measurement of p T3 / p T2 for Z + two-jet events is presented in Fig. 6 for data at √ s = PYTHIA , SHERPA , M AD G RAPH , and a MC @ NLO agree with data within the uncertaintiesof the measurement except for the bins with hard radiation.Figure 7 shows the measurement as a function of ∆ R . The a MC @ NLO prediction deviates fromthe data at high ∆ R and small p T3 / p T2 , while PYTHIA , SHERPA , M AD G RAPH , and a MC @ NLO describe the shape of the distribution in the high- p T3 / p T2 range, but underestimate the datadue to a smaller contribution from production of j . This feature is based on the normalization .2 Z + two-jet selection R ∆ dd N N R ∆ P r e d i c ti on / D a t a CMS (13 TeV) Three jet < 0.3 T2 /p T3 p > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. R ∆ dd N N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (13 TeV) Three jet < 0.3 T2 /p T3 p > 510 GeV T1 p R ∆ dd N N R ∆ P r e d i c ti on / D a t a CMS (13 TeV) Three jet > 0.6 T2 /p T3 p > 510 GeV T1 p DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert. R ∆ dd N N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO 2jets+PSMADGRAPH LO 4jets+PSPOWHEG NLO 2jets+PSSyst. on datafor POWHEGScale + PDF uncert.
CMS (13 TeV) Three jet > 0.6 T2 /p T3 p > 510 GeV T1 p Figure 5: Three-jet events at √ s =
13 TeV and comparison to theoretical predictions: (left) ∆ R for soft radiation ( p T3 / p T2 < ∆ R for hard radiation ( p T3 / p T2 > − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert.
CMS (8 TeV) Z + two jet < 1.0 R ∆ − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet < 1.0 R ∆ DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert. − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert.
CMS (8 TeV) Z + two jet > 1.0 R ∆ − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet > 1.0 R ∆ DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert.
Figure 6: Z + two-jet events at √ s = p T3 / p T2 for small-angleradiation ( ∆ R < p T3 / p T2 for large-angle radiation ( ∆ R > PYTHIA
PYTHIA ∆ R .The results of the Z + two-jet events are, in general, described by all theoretical predictions,except for the underestimation of j emission. However, the three-jet events display significantdifferences; only in the region of large ∆ R and large p T3 / p T2 (hard and large-angle radiation)do the theoretical predictions agree with the measurement. The accessible range in p T is rathersmall in Z + two-jet events because of the limit in the p T of the Z bosons ( p T1 >
80 GeV), while − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst.on datafor aMC@NLOScale + PDF uncert.
CMS (8 TeV) Z + two jet < 0.3 T2 /p T3 p − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet < 0.3 T2 /p T3 p DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst.on datafor aMC@NLOScale + PDF uncert. − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert.
CMS (8 TeV) Z + two jet > 0.6 T2 /p T3 p − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet > 0.6 T2 /p T3 p DataPYTHIA LO Z+1j+PSMADGRAPH LO Z+4j+PSSHERPA LO Z+4j+PSaMC@NLO NLO Z+1j+PSSyst. on datafor aMC@NLOScale + PDF uncert. Figure 7: Z + two-jet events at √ s = ∆ R for soft radiation( p T3 / p T2 < ∆ R for hard radiation ( p T3 / p T2 > p T1 >
510 GeV). Thismay explain why the region of small p T3 / p T2 is better described by predictions that includePS in the latter case. In addition, the large-angle radiation is best described by fixed-order MEcalculations. − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data
CMS (8 TeV) Z + two jet < 1.0 R ∆ − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet < 1.0 R ∆ PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data
CMS (8 TeV) Z + two jet > 1.0 R ∆ − × ) T / p T d ( p j d N j N T2 /p T3 p0.40.60.811.21.41.6 P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet > 1.0 R ∆ PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data
Figure 8: Z + two-jet events at √ s = PYTHIA p T3 / p T2 for small-angle radiation ( ∆ R < p T3 / p T2 for large-angle radiation( ∆ R > p T3 / p T2 , which orig-inates from the different kinematic selection criteria relative to three-jet events, thus reducingthe sensitivity in the soft and collinear region. Within the available phase space, the measure-ments are in reasonable agreement with both PS and ME calculations, apart from the emissionof j in the high- p T3 / p T2 region. − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data
CMS (8 TeV) Z + two jet < 0.3 T2 /p T3 p − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet < 0.3 T2 /p T3 p PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data
CMS (8 TeV) Z + two jet > 0.6 T2 /p T3 p − × R ∆ d j d N j N R ∆ P r e d i c ti on / D a t a CMS (8 TeV) Z + two jet > 0.6 T2 /p T3 p PYTHIA+PSDataMPI+FPS+IPSnoMPI+FPS+IPSnoMPI+noFPS+IPSSyst. on data Figure 9: Z + two-jet events at √ s = PYTHIA ∆ R for soft radiation ( p T3 / p T2 < ∆ R for hard radiation ( p T3 / p T2 > Two kinematic variables are introduced to quantify the radiation pattern in multijet events: (i)the transverse momentum ratio ( p T3 / p T2 ) of two jets, and (ii) their angular separation ( ∆ R ).The variable p T3 / p T2 is used to distinguish between soft and hard radiation, while ∆ R classi-fies events into small- and large-angle radiation types. Events with three or more energetic jetsas well as inclusive Z + two-jet events are selected for study using data collected at √ s = − . Three-jet events at √ s =
13 TeV corre-sponding to an integrated luminosity of 2.3 fb − are also analyzed. No significant dependenceon the center-of-mass energy is observed in the differential distributions of p T3 / p T2 and ∆ R .Overall, large-angle radiation (large ∆ R ) and hard radiation (large p T3 / p T2 ) are well de-scribed by the matrix element (ME) calculations (using LO 4j+PS formulations), while the par-ton shower (PS) approach (LO 2j+PS and NLO 2j+PS) fail to describe the regions of large-angleand hard radiation. The collinear region (small ∆ R ) is not well described; LO 2j+PS, NLO2j+PS, and LO 4j+PS distributions show deviations from the measurements. In the soft region(small p T3 / p T2 ), the PS approach describes the measurement also in the large-angle region (fullrange in ∆ R ), while for large p T3 / p T2 higher-order ME contributions are needed to describethe three-jet measurements. The distributions in Z + two-jet events are reasonably describedby all tested generators. Nevertheless, we find an underestimation of third-jet emission at large p T3 / p T2 both in the collinear and large-angle regions, for all of the tested models. These resultsillustrate how well the collinear/soft, and large-angle/hard regions are described by differentapproaches. The different kinematic regions and initial-state flavor composition may be thereason why the three-jet measurements are less consistent with the theoretical predictions rel-ative to the Z + two-jet final states. These results clearly indicate that the methods of mergingME with PS calculations are not yet optimal for describing the full region of phase space. Acknowledgments
We congratulate our colleagues in the CERN accelerator departments for the excellent perfor-mance of the LHC and thank the technical and administrative staffs at CERN and at other CMSinstitutes for their contributions to the success of the CMS effort. In addition, we gratefullyacknowledge the computing centers and personnel of the Worldwide LHC Computing Gridand other centers for delivering so effectively the computing infrastructure essential to ouranalyses. Finally, we acknowledge the enduring support for the construction and operationof the LHC, the CMS detector, and the supporting computing infrastructure provided by thefollowing funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq,CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, andNSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT(Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Fin-land); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NK-FIA (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, CIN-VESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (NewZealand); 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); ThEPCen-ter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC(United Kingdom); DOE and NSF (USA).Individuals have received support from the Marie-Curie program and the European ResearchCouncil and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, and 765710 (EuropeanUnion); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Hum-boldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation `a laRecherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Inno-vatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) un-der the “Excellence of Science – EOS” – be.h project n. 30820817; the Beijing Municipal Science &Technology Commission, No. Z191100007219010; the Ministry of Education, Youth and Sports(MEYS) of the Czech Republic; the Deutsche Forschungsgemeinschaft (DFG), under Germany’sExcellence Strategy – EXC 2121 “Quantum Universe” – 390833306, and under project number400140256 - GRK2497; the Lend ¨ulet (“Momentum”) Program and the J´anos Bolyai ResearchScholarship of the Hungarian Academy of Sciences, the New National Excellence Program´UNKP, the NKFIA research grants 123842, 123959, 124845, 124850, 125105, 128713, 128786,and 129058 (Hungary); the Council of Science and Industrial Research, India; the HOMINGPLUS program of the Foundation for Polish Science, cofinanced from European Union, Re-gional Development Fund, the Mobility Plus program of the Ministry of Science and HigherEducation, 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-bis2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National ResearchFund; the Ministry of Science and Higher Education, project no. 0723-2020-0041 (Russia); thePrograma Estatal de Fomento de la Investigaci ´on Cient´ıfica y T´ecnica de Excelencia Mar´ıa deMaeztu, 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 RachadapisekSompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the ChulalongkornAcademic into Its 2nd Century Project Advancement Project (Thailand); the Kavli Foundation;the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845;and the Weston Havens Foundation (USA). eferences References [1] S. Catani, F. Krauss, R. Kuhn, and B. R. Webber, “QCD matrix elements + partonshowers”,
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Yerevan Physics Institute, Yerevan, Armenia
A.M. Sirunyan † , A. Tumasyan Institut f ¨ur Hochenergiephysik, Wien, Austria
W. Adam, T. Bergauer, M. Dragicevic, J. Er ¨o, A. Escalante Del Valle, R. Fr ¨uhwirth , M. Jeitler ,N. Krammer, L. Lechner, D. Liko, T. Madlener, I. Mikulec, F.M. Pitters, N. Rad, J. Schieck ,R. Sch ¨ofbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz , M. Zarucki Institute for Nuclear Problems, Minsk, Belarus
V. Chekhovsky, A. Litomin, V. Makarenko
Universiteit Antwerpen, Antwerpen, Belgium
M.R. Darwish , E.A. De Wolf, D. Di Croce, X. Janssen, T. Kello , 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
Universit´e 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. P´etr´e, 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 , M. Niedziela, C. Roskas, K. Skovpen,M. Tytgat, W. Verbeke, B. Vermassen, M. Vit Universit´e 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, J. Zobec
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. Ald´a J ´unior, E. Belchior Batista Das Chagas, H. BRANDAO MALBOUISSON,W. Carvalho, J. Chinellato , E. Coelho, E.M. Da Costa, G.G. Da Silveira , D. De Jesus Damiao,S. Fonseca De Souza, J. Martins , D. Matos Figueiredo, M. Medina Jaime , 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 , S˜ao 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
M. Bonchev, A. Dimitrov, T. Ivanov, L. Litov, B. Pavlov, P. Petkov, A. Petrov Beihang University, Beijing, China
W. Fang , Q. Guo, H. Wang, L. Yuan Department of Physics, Tsinghua University, Beijing, China
M. Ahmad, Z. Hu, Y. Wang
Institute of High Energy Physics, Beijing, China
E. Chapon, G.M. Chen , H.S. Chen , M. Chen, T. Javaid , A. Kapoor, D. Leggat, H. Liao, Z. Liu,R. Sharma, A. Spiezia, J. Tao, J. Thomas-wilsker, J. Wang, H. Zhang, S. Zhang , 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-beamApplication (MOE) - Fudan University, Shanghai, China
X. Gao 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 Gonz´alez,N. Vanegas Arbelaez
University of Split, Faculty of Electrical Engineering, Mechanical Engineering and NavalArchitecture, Split, Croatia
D. Giljanovic, N. Godinovic, D. Lelas, I. Puljak, T. Sculac
University of Split, Faculty of Science, Split, Croatia
Z. Antunovic, M. Kovac
Institute Rudjer Boskovic, Zagreb, Croatia
V. Brigljevic, D. Ferencek, D. Majumder, M. Roguljic, A. Starodumov , T. Susa University of Cyprus, Nicosia, Cyprus
M.W. Ather, A. Attikis, E. Erodotou, A. Ioannou, G. Kole, M. Kolosova, S. Konstantinou,G. Mavromanolakis, J. Mousa, C. Nicolaou, F. Ptochos, P.A. Razis, H. Rykaczewski, H. Saka,D. Tsiakkouri
Charles University, Prague, Czech Republic
M. Finger , M. Finger Jr. , 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, EgyptianNetwork of High Energy Physics, Cairo, Egypt
H. Abdalla , A.A. Abdelalim , S. Elgammal Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
M.A. Mahmoud, Y. Mohammed 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. Br ¨ucken, F. Garcia, J. Havukainen, V. Karim¨aki, M.S. Kim, R. Kinnunen, T. Lamp´en,K. Lassila-Perini, S. Lehti, T. Lind´en, H. Siikonen, E. Tuominen, J. Tuominiemi
Lappeenranta University of Technology, Lappeenranta, Finland
P. Luukka, T. Tuuva
IRFU, CEA, Universit´e 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. ¨O. Sahin, A. Savoy-Navarro , M. Titov, G.B. Yu Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechniquede 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
Universit´e de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
J.-L. Agram , J. Andrea, D. Bloch, G. Bourgatte, J.-M. Brom, E.C. Chabert, C. Collard, J.-C. Fontaine , D. Gel´e, U. Goerlach, C. Grimault, A.-C. Le Bihan, P. Van Hove Institut de Physique des 2 Infinis de Lyon (IP2I ), 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
G. Adamov, Z. Tsamalaidze 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. Fl ¨ugge, W. Haj Ahmad , O. Hlushchenko, T. Kress, A. Nowack, C. Pistone,O. Pooth, D. Roy, H. Sert, A. Stahl , T. Ziemons Deutsches Elektronen-Synchrotron, Hamburg, Germany
H. Aarup Petersen, M. Aldaya Martin, P. Asmuss, I. Babounikau, S. Baxter, O. Behnke,A. Berm ´udez Mart´ınez, A.A. Bin Anuar, K. Borras , V. Botta, D. Brunner, A. Campbell,A. Cardini, P. Connor, S. Consuegra Rodr´ıguez, V. Danilov, A. De Wit, M.M. Defranchis,L. Didukh, D. Dom´ınguez Damiani, G. Eckerlin, D. Eckstein, T. Eichhorn, L.I. Estevez Banos,E. Gallo , A. Geiser, A. Giraldi, A. Grohsjean, M. Guthoff, A. Harb, A. Jafari , N.Z. Jomhari,H. Jung, A. Kasem , M. Kasemann, H. Kaveh, C. Kleinwort, J. Knolle, D. Kr ¨ucker, W. Lange,T. Lenz, J. Lidrych, K. Lipka, W. Lohmann , R. Mankel, I.-A. Melzer-Pellmann, J. Metwally,A.B. Meyer, M. Meyer, M. Missiroli, J. Mnich, A. Mussgiller, V. Myronenko, Y. Otarid,D. P´erez Ad´an, 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. Fr ¨ohlich, 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. Steinbr ¨uck, B. Vormwald, I. Zoi
Karlsruher Institut fuer Technologie, Karlsruhe, Germany
S. Baur, J. Bechtel, T. Berger, E. Butz, R. Caspart, T. Chwalek, W. De Boer, A. Dierlamm,A. Droll, K. El Morabit, N. Faltermann, K. Fl ¨oh, M. Giffels, A. Gottmann, F. Hartmann ,C. Heidecker, U. Husemann, M.A. Iqbal, I. Katkov , P. Keicher, R. Koppenh ¨ofer, S. Maier,M. Metzler, S. Mitra, D. M ¨uller, Th. M ¨uller, M. Musich, G. Quast, K. Rabbertz, J. Rauser,D. Savoiu, D. Sch¨afer, M. Schnepf, M. Schr ¨oder, 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 Io´annina, Io´annina, Greece
I. Evangelou, C. Foudas, P. Gianneios, P. Katsoulis, P. Kokkas, K. Manitara, N. Manthos,I. Papadopoulos, J. Strologas
MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´and University, Budapest, Hungary
M. Bart ´ok , R. Chudasama, M. Csanad, M.M.A. Gadallah , S. L ¨ok ¨os , P. Major, K. Mandal,A. Mehta, G. Pasztor, O. Sur´anyi, G.I. Veres Wigner Research Centre for Physics, Budapest, Hungary
G. Bencze, C. Hajdu, D. Horvath , F. Sikler, V. Veszpremi, G. Vesztergombi † Institute of Nuclear Research ATOMKI, Debrecen, Hungary
S. Czellar, J. Karancsi , 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, F. Nemes, 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 , D. Dash, C. Kar, P. Mal, T. Mishra, V.K. Muraleedharan Nair Bindhu,A. Nayak , D.K. Sahoo , N. Sur, S.K. Swain Panjab University, Chandigarh, India
S. Bansal, S.B. Beri, V. Bhatnagar, S. Chauhan, N. Dhingra , 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 , R. Bhattacharya, S. Bhattacharya, D. Bhowmik, S. Dutta, S. Ghosh, B. Gomber ,M. Maity , S. Nandan, P. Palit, P.K. Rout, G. Saha, B. Sahu, S. Sarkar, M. Sharan, B. Singh ,S. Thakur 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 , 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, 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 , M. Zeinali Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
S. Chenarani , S.M. Etesami, M. Khakzad, M. Mohammadi Najafabadi University College Dublin, Dublin, Ireland
M. Felcini, M. Grunewald
INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy M. Abbrescia a , b , R. Aly a , b ,40 , 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 , Universit`a 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 ,C. Grandi a , L. Guiducci a , b , F. Iemmi a , b , S. Lo Meo a ,41 , 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 , Universit`a di Catania b , Catania, Italy S. Albergo a , b ,42 , S. Costa a , b ,42 , A. Di Mattia a , R. Potenza a , b , A. Tricomi a , b ,42 , C. Tuve a , b INFN Sezione di Firenze a , Universit`a 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 , Universit`a 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 , Universit`a 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 ,20 , 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 , 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 ,20 , D. Zuolo a , b INFN Sezione di Napoli a , Universit`a di Napoli ’Federico II’ b , Napoli, Italy, Universit`a dellaBasilicata c , Potenza, Italy, Universit`a 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 ,20 , P. Paolucci a ,20 , B. Rossi a , C. Sciacca a , b , E. Voevodina a , b INFN Sezione di Padova a , Universit`a di Padova b , Padova, Italy, Universit`a di Trento c ,Trento, Italy P. Azzi a , N. Bacchetta a , D. Bisello a , b , A. Boletti 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 ,43 , 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 , A. Tiko 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 , Universit`a 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 , Universit`a di Perugia b , Perugia, Italy M. Biasini a , b , G.M. Bilei a , D. Ciangottini a , b , L. Fan `o 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 , Universit`a di Pisa b , Scuola Normale Superiore di Pisa c , Pisa Italy,Universit`a di Siena d , Siena, 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 , d , 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 , d , A. Venturi a , P.G. Verdini a INFN Sezione di Roma a , Sapienza Universit`a 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 , Universit`a di Torino b , Torino, Italy, Universit`a del PiemonteOrientale 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 , 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 , D. Trocino a , b INFN Sezione di Trieste a , Universit`a 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. Kim4
H.S. Kim, Y. Kim4 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
Riga Technical University, Riga, Latvia
V. Veckalns Vilnius University, Vilnius, Lithuania
A. Juodagalvis, A. Rinkevicius, G. Tamulaitis
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 , 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 Aut ´onoma de San Luis Potos´ı, San Luis Potos´ı, Mexico
A. Morelos Pineda
University of Montenegro, Podgorica, Montenegro
J. Mijuskovic , 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 andTelecommunications, Krakow, Poland
V. Avati, L. Grzanka, M. Malawski
National Centre for Nuclear Research, Swierk, Poland
H. Bialkowska, M. Bluj, B. Boimska, T. Frueboes, M. G ´orski, M. Kazana, M. Szleper, P. Traczyk,P. Zalewski Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
K. Bunkowski, A. Byszuk , K. Doroba, A. Kalinowski, M. Konecki, J. Krolikowski,M. Olszewski, M. Walczak Laborat ´orio de Instrumenta¸c˜ao e F´ısica Experimental de Part´ıculas, Lisboa, Portugal
M. Araujo, P. Bargassa, D. Bastos, 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
V. Alexakhin, P. Bunin, M. Gavrilenko, A. Golunov, A. Golunov, I. Golutvin, I. Gorbunov,A. Kamenev, V. Karjavine, V. Korenkov, A. Lanev, A. Malakhov, V. Matveev , V. Palichik,V. Perelygin, M. Savina, S. Shmatov, S. Shulha, V. Smirnov, O. Teryaev, N. Voytishin, A. Zarubin
Petersburg Nuclear Physics Institute, Gatchina (St. Petersburg), Russia
G. Gavrilov, V. Golovtcov, Y. Ivanov, V. Kim , E. Kuznetsova , 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 † , 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 , 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
O. Bychkova, M. Chadeeva , D. Philippov, E. Popova, V. Rusinov 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, M. Dubinin , L. Dudko, A. Ershov, A. Gribushin, V. Klyukhin,O. Kodolova, I. Lokhtin, S. Obraztsov, S. Petrushanko, V. Savrin, A. Snigirev Novosibirsk State University (NSU), Novosibirsk, Russia
V. Blinov , T. Dimova , L. Kardapoltsev , I. Ovtin , Y. Skovpen 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 , P. Cirkovic, M. Dordevic, P. Milenovic, J. Milosevic Centro de Investigaciones Energ´eticas Medioambientales y Tecnol ´ogicas (CIEMAT),Madrid, Spain
M. Aguilar-Benitez, J. Alcaraz Maestre, A. ´Alvarez Fern´andez, I. Bachiller, M. Barrio Luna,Cristina F. Bedoya, J.A. Brochero Cifuentes, C.A. Carrillo Montoya, M. Cepeda, M. Cerrada,N. Colino, B. De La Cruz, A. Delgado Peris, J.P. Fern´andez Ramos, J. Flix, M.C. Fouz,A. Garc´ıa Alonso, O. Gonzalez Lopez, S. Goy Lopez, J.M. Hernandez, M.I. Josa,J. Le ´on Holgado, D. Moran, ´A. Navarro Tobar, A. P´erez-Calero Yzquierdo, J. Puerta Pelayo,I. Redondo, L. Romero, S. S´anchez Navas, M.S. Soares, A. Triossi, L. Urda G ´omez, C. Willmott
Universidad Aut ´onoma de Madrid, Madrid, Spain
C. Albajar, J.F. de Troc ´oniz, R. Reyes-Almanza
Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnolog´ıas Espaciales deAsturias (ICTEA), Oviedo, Spain
B. Alvarez Gonzalez, J. Cuevas, C. Erice, J. Fernandez Menendez, S. Folgueras, I. Gonza-lez Caballero, E. Palencia Cortezon, C. Ram ´on ´Alvarez, J. Ripoll Sau, V. Rodr´ıguez Bouza,S. Sanchez Cruz, A. Trapote
Instituto de F´ısica de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
I.J. Cabrillo, A. Calderon, B. Chazin Quero, J. Duarte Campderros, M. Fernandez,P.J. Fern´andez 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 , 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. D ¨unser, N. Dupont, A. Elliott-Peisert,N. Emriskova, F. Fallavollita , 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. Lourenc¸o, L. Malgeri, S. Mallios,M. Mannelli, A. Massironi, F. Meijers, S. Mersi, E. Meschi, F. Moortgat, M. Mulders, J. Niedziela,S. Orfanelli, L. Orsini, F. Pantaleo , 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. Sch¨afer, C. Schwick, M. Selvaggi, A. Sharma, P. Silva, W. Snoeys,P. Sphicas , 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 , 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. Doneg`a, C. Dorfer, T. Gadek, T.A. G ´omez 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, L. Perrozzi, S. Pigazzini, M.G. Ratti, M. Reichmann, C. Reissel, T. Reitenspiess,B. Ristic, D. Ruini, D.A. Sanz Becerra, M. Sch ¨onenberger, V. Stampf, M.L. Vesterbacka Olsson,R. Wallny, D.H. Zhu
Universit¨at Z ¨urich, Zurich, Switzerland
C. Amsler , C. Botta, D. Brzhechko, M.F. Canelli, R. Del Burgo, J.K. Heikkil¨a, 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 , C.M. Kuo, W. Lin, A. Roy, T. Sarkar , 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
C¸ ukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
F. Boran, S. Damarseckin , Z.S. Demiroglu, F. Dolek, C. Dozen , I. Dumanoglu , E. Eskut,G. Gokbulut, Y. Guler, E. Gurpinar Guler , I. Hos , C. Isik, E.E. Kangal , O. Kara,A. Kayis Topaksu, U. Kiminsu, G. Onengut, K. Ozdemir , A. Polatoz, A.E. Simsek, B. Tali ,U.G. Tok, S. Turkcapar, I.S. Zorbakir, C. Zorbilmez Middle East Technical University, Physics Department, Ankara, Turkey
B. Isildak , G. Karapinar , K. Ocalan , M. Yalvac Bogazici University, Istanbul, Turkey
I.O. Atakisi, E. G ¨ulmez, M. Kaya , O. Kaya , ¨O. ¨Ozc¸elik, S. Tekten , E.A. Yetkin Istanbul Technical University, Istanbul, Turkey
A. Cakir, K. Cankocak , Y. Komurcu, S. Sen Istanbul University, Istanbul, Turkey
F. Aydogmus Sen, S. Cerci , B. Kaynak, S. Ozkorucuklu, D. Sunar Cerci 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,J. Taylor, A. Titterton
Rutherford Appleton Laboratory, Didcot, United Kingdom
K.W. Bell, A. Belyaev , 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 , 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 , 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 , 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
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, 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 , D. Cutts, Y.t. Duh, M. Hadley, U. Heintz, J.M. Hogan ,K.H.M. Kwok, E. Laird, G. Landsberg, K.T. Lau, J. Lee, M. Narain, S. Sagir , 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 † , 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, 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, S.M.A. Ghiasi Shirazi, 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. W ¨urthwein, 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
D. Anderson, 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
S. Abdullin, 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. Gr ¨unendahl, 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 , 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 , 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
The University of Iowa, Iowa City, USA
M. Alhusseini, K. Dilsiz , S. Durgut, R.P. Gandrajula, M. Haytmyradov, V. Khristenko,O.K. K ¨oseyan, J.-P. Merlo, A. Mestvirishvili , A. Moeller, J. Nachtman, H. Ogul , Y. Onel,F. Ozok , A. Penzo, C. Snyder, E. Tiras, J. Wetzel, K. Yi 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. ´A. V´ami 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, S. Guts † , 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. Gonz´alez Fern´andez,I. Kravchenko, J.E. Siado, G.R. Snow † , B. Stieger, 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 ,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
P. Das, G. Dezoort, 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. Pirou´e, 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 , N. Trevisani, F. Wang,R. Xiao, W. Xie Purdue University Northwest, Hammond, USA
T. Cheng, 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 † , 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 , 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 , M. Dalchenko, A. Delgado, R. Eusebi, J. Gilmore, T. Huang, T. Kamon , H. Kim,S. Luo, S. Malhotra, R. Mueller, D. Overton, L. Perni`e, 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, M. Verweij
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. Herv´e, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless,J. Madhusudanan Sreekala, A. Mallampalli, D. Pinna, T. Ruggles, A. Savin, V. Shang, V. Sharma,W.H. Smith, J. Steggemann, D. Teague, S. Trembath-reichert, W. Vetens †: Deceased1: Also at Vienna University of Technology, Vienna, Austria2: Also at Institute of Basic and Applied Sciences, Faculty of Engineering, Arab Academy forScience, Technology and Maritime Transport, Alexandria, Egypt, Alexandria, Egypt3: Also at Universit´e Libre de Bruxelles, Bruxelles, Belgium4: Also at IRFU, CEA, Universit´e Paris-Saclay, Gif-sur-Yvette, France5: Also at Universidade Estadual de Campinas, Campinas, Brazil6: Also at Federal University of Rio Grande do Sul, Porto Alegre, Brazil7: Also at UFMS, Nova Andradina, Brazil8: Also at Universidade Federal de Pelotas, Pelotas, Brazil9: Also at University of Chinese Academy of Sciences, Beijing, China10: Also at Institute for Theoretical and Experimental Physics named by A.I. Alikhanov ofNRC ‘Kurchatov Institute’, Moscow, Russia11: Also at Joint Institute for Nuclear Research, Dubna, Russia12: Also at Cairo University, Cairo, Egypt13: Also at Helwan University, Cairo, Egypt14: Now at Zewail City of Science and Technology, Zewail, Egypt15: Now at British University in Egypt, Cairo, Egypt16: Now at Fayoum University, El-Fayoum, Egypt17: Also at Purdue University, West Lafayette, USA18: Also at Universit´e de Haute Alsace, Mulhouse, France19: Also at Erzincan Binali Yildirim University, Erzincan, Turkey20: Also at CERN, European Organization for Nuclear Research, Geneva, Switzerland21: Also at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany22: Also at University of Hamburg, Hamburg, Germany23: Also at Department of Physics, Isfahan University of Technology, Isfahan, Iran, Isfahan,Iran24: Also at Brandenburg University of Technology, Cottbus, Germany25: Also at Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University,Moscow, Russia26: Also at Institute of Physics, University of Debrecen, Debrecen, Hungary, Debrecen,Hungary27: Also at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt28: Also at MTA-ELTE Lend ¨ulet CMS Particle and Nuclear Physics Group, E ¨otv ¨os Lor´andUniversity, Budapest, Hungary, Budapest, Hungary29: Also at Institute of Nuclear Research ATOMKI, Debrecen, Hungary30: Also at IIT Bhubaneswar, Bhubaneswar, India, Bhubaneswar, India31: Also at Institute of Physics, Bhubaneswar, India32: Also at G.H.G. Khalsa College, Punjab, India33: Also at Shoolini University, Solan, India34: Also at University of Hyderabad, Hyderabad, India35: Also at University of Visva-Bharati, Santiniketan, India36: Also at Indian Institute of Technology (IIT), Mumbai, India37: Also at Deutsches Elektronen-Synchrotron, Hamburg, Germany38: Also at Sharif University of Technology, Tehran, Iran39: Also at Department of Physics, University of Science and Technology of Mazandaran,Behshahr, Iran40: Now at INFN Sezione di Bari a , Universit`a di Bari b , Politecnico di Bari c , Bari, Italy41: Also at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy42: Also at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy43: Also at Universit`a di Napoli ’Federico II’, NAPOLI, Italy44: Also at Riga Technical University, Riga, Latvia, Riga, Latvia45: Also at Consejo Nacional de Ciencia y Tecnolog´ıa, Mexico City, Mexico46: Also at Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland47: Also at Institute for Nuclear Research, Moscow, Russia48: Now at National Research Nuclear University ’Moscow Engineering Physics Institute’(MEPhI), Moscow, Russia49: Also at St. Petersburg State Polytechnical University, St. Petersburg, Russia50: Also at University of Florida, Gainesville, USA51: Also at Imperial College, London, United Kingdom52: Also at P.N. Lebedev Physical Institute, Moscow, Russia53: Also at California Institute of Technology, Pasadena, USA54: Also at Budker Institute of Nuclear Physics, Novosibirsk, Russia55: Also at Faculty of Physics, University of Belgrade, Belgrade, Serbia56: Also at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka57: Also at INFN Sezione di Pavia a , Universit`a di Pavia b , Pavia, Italy, Pavia, Italy58: Also at National and Kapodistrian University of Athens, Athens, Greece59: Also at Universit¨at Z ¨urich, Zurich, Switzerland60: Also at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria, Vienna, Austria61: Also at Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France62: Also at S¸ ırnak University, Sirnak, Turkey63: Also at Department of Physics, Tsinghua University, Beijing, China, Beijing, China64: Also at Near East University, Research Center of Experimental Health Science, Nicosia,Turkey65: Also at Beykent University, Istanbul, Turkey, Istanbul, Turkey66: Also at Istanbul Aydin University, Application and Research Center for Advanced Studies(App. & Res. Cent. for Advanced Studies), Istanbul, Turkey67: Also at Mersin University, Mersin, Turkey68: Also at Piri Reis University, Istanbul, Turkey69: Also at Adiyaman University, Adiyaman, Turkey70: Also at Ozyegin University, Istanbul, Turkey71: Also at Izmir Institute of Technology, Izmir, Turkey72: Also at Necmettin Erbakan University, Konya, Turkey73: Also at Bozok Universitetesi Rekt ¨orl ¨ug ¨u, Yozgat, Turkey, Yozgat, Turkey74: Also at Marmara University, Istanbul, Turkey75: Also at Milli Savunma University, Istanbul, Turkey76: Also at Kafkas University, Kars, Turkey77: Also at Istanbul Bilgi University, Istanbul, Turkey78: Also at Hacettepe University, Ankara, Turkey79: Also at School of Physics and Astronomy, University of Southampton, Southampton,United Kingdom80: Also at IPPP Durham University, Durham, United Kingdom81: Also at Monash University, Faculty of Science, Clayton, Australia82: Also at Bethel University, St. Paul, Minneapolis, USA, St. Paul, USA83: Also at Karamano ˘glu Mehmetbey University, Karaman, Turkey84: Also at Ain Shams University, Cairo, Egypt4