[PDF] Top 20 Measurement of the distributions of event-by-event flow harmonics in lead-lead collisions at = 2.76 TeV with the ATLAS detector at the LHC

... acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Aus- tralia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, ... See full document

... presented in this paper were performed using the ATLAS inner de- tector (ID), calorimeter, muon spectrometer, and the high-level trigger and data acquisition systems ...[19]. The ID ... See full document

... nitudes of F obtained for third- and fourth-order harmon- ics, and also for the elliptic flow harmonic measured in the most central collisions, indicate the dominant role ... See full document

... functions in ∆η and ∆φ have been measured using charged particles with p T > 100 MeV and |η| < ...recorded by the ATLAS detector at the LHC from ... See full document

... dominate the UE are the main type of interaction in proton–proton col- ...lisions. The behaviour of such soft interactions cannot be calculated reliably with perturbative ... See full document

... side of the interaction point to suppress noncollision ...between the ZDC signals at forward and backward pseudorapidity is required to reject a variety of background processes, while ... See full document

... hits in the inner detector using the standard ATLAS track recon- struction algorithm [25] with settings optimized for the high hit density in heavy ion ... See full document

... ideal detector, the combinatorial pair distribu- tion is uniform in ∆φ, and has a nearly triangular shape in ∆η due to the weak dependence of the single-particle ... See full document

... when the measured p Z T is large enough that, taking into account detector resolu- tion, it can be used to define a ...direction. The away region is dominated by particles balancing the ... See full document

... dependence of the mean charged-particle multiplicity as a function of pseu- dorapidity is measured in approximately 1 µb −1 of proton–lead collisions at a nucleon– ... See full document

... through the medium and lose ...process in which constituents of the parton shower may be elastically or inelastically scattered by the constituents of the plasma, ... See full document

... to the second sampling layer of the electro- magnetic calorimeter, which typically contains over 50% of the shower ...energy. In the dense environment of the ... See full document

... Studying the production of pairs of Z bosons in proton- proton (pp) interactions at the Large Hadron Collider (LHC) tests the electroweak sector of ... See full document

... The measurement presented here is based on pPb data taken with the CMS experiment at the LHC at the beginning of ...description of the ... See full document

... are the only significant source of background that does not contain a Z bo- ...enriched in t¯ t background events is defined by changing the charge combination of the ... See full document

... upon event counting, but rather upon measuring detec- tor currents that are proportional to the total particle flux in specific regions of the ...to the highest interaction rates ... See full document

... measurements of primary charged-particle distributions in pp collisions at a centre-of-mass energy of √ s = 13 TeV, using data recorded by the ... See full document

... measured in units of 1R ≡ √ (1η) 2 + (1φ) 2 . The photon or electron transverse energy is ET = E sin(θ ), where E is its ...energy. The inner tracking detector (ITD) ... See full document

... Determination of single-beam parameters from luminous-region and luminosity-scan data While a single o ff-axis scan can provide convincing evidence for non-factorization, it samples only one thin slice in ... See full document

... on the Pythia8 generator [ 22 , 23 ] either with the A2 [ 24 ] set of tuned underlying-event parameters and the MSTW 2008 LO PDF set [ 25 ] or with the Monash [ 26 ... See full document