Charged-particle spectra obtained in Pb+Pb interactions at (Formula presented.) and pp interactions at (Formula presented.) with the ATLAS detector at the LHC are presented, using data with integrated luminosities of 0.15 nb<sup>−1</sup> and 4.2 pb<sup>−1</sup>, respectively, in a wide transverse momentum (0.5 < p<inf>T</inf>< 150 GeV) and pseudorapidity (|η| < 2) range. For Pb+Pb collisions, the spectra are presented as a function of collision centrality, which is determined by the response of the forward calorimeters located on both sides of the interaction point. The nuclear modification factors R<inf>AA</inf> and R<inf>CP</inf> are presented in detail as a function of centrality, p<inf>T</inf> and η. They show a distinct p<inf>T</inf>-dependence with a pronounced minimum at about 7 GeV. Above 60 GeV, R<inf>AA</inf> is consistent with a plateau at a centrality-dependent value, within the uncertainties. The value is 0.55 ± 0.01(stat.) ± 0.04(syst.) in the most central collisions. The R<inf>AA</inf> distribution is consistent with flat |η| dependence over the whole transverse momentum range in all centrality classes.
|Titolo:||Measurement of charged-particle spectra in Pb+Pb collisions at sqrt(sNN) = 2.76 TeV with the ATLAS detector at the LHC|
|Data di pubblicazione:||2015|
|Citazione:||Aad, G., Ceradini, F., Di Micco, B., Orestano, D., Petrucci, F., Puddu, D., et al. (2015). Measurement of charged-particle spectra in Pb+Pb collisions at sqrt(sNN) = 2.76 TeV with the ATLAS detector at the LHC. JOURNAL OF HIGH ENERGY PHYSICS, 2015(9).|
|Appare nelle tipologie:||1.1 Articolo in rivista|