The ATLAS Collaboration;
(2016)
Transverse momentum, rapidity, and centrality dependence
of inclusive charged-particle production in √sNN = 5.02 TeV p + Pb
collisions measured by the ATLAS experiment.
Physics Letters B
, 763
pp. 313-336.
10.1016/j.physletb.2016.10.053.
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Abstract
Measurements of the per-event charged-particle yield as a function of the charged-particle transverse momentum and rapidity are performed using p+Pb collision data collected by the ATLAS experiment at the LHC at a centre-of-mass energy of View the MathML source. Charged particles are reconstructed over pseudorapidity |η|<2.3 and transverse momentum between 0.1 GeV and 22 GeV in a dataset corresponding to an integrated luminosity of 1 μb−1. The results are presented in the form of charged-particle nuclear modification factors, where the p+Pb charged-particle multiplicities are compared between central and peripheral p+Pb collisions as well as to charged-particle cross sections measured in pp collisions. The p+Pb collision centrality is characterized by the total transverse energy measured in −4.9<η<−3.1, which is in the direction of the outgoing lead beam. Three different estimations of the number of nucleons participating in the p+Pb collision are carried out using the Glauber model and two Glauber–Gribov colour-fluctuation extensions to the Glauber model. The values of the nuclear modification factors are found to vary significantly as a function of rapidity and transverse momentum. A broad peak is observed for all centralities and rapidities in the nuclear modification factors for charged-particle transverse momentum values around 3 GeV. The magnitude of the peak increases for more central collisions as well as rapidity ranges closer to the direction of the outgoing lead nucleus.
| Type: | Article |
|---|---|
| Title: | Transverse momentum, rapidity, and centrality dependence of inclusive charged-particle production in √sNN = 5.02 TeV p + Pb collisions measured by the ATLAS experiment |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2016.10.053 |
| Publisher version: | http://doi.org/10.1016/j.physletb.2016.10.053 |
| Language: | English |
| Additional information: | Copyright © 2016 The Author(s). Published by Elsevier Inc. This is an open access article under the Creative Commons Attribution 4.0 International (CC BY 4.0) license (http://creativecommons.org/licenses/by/4.0/) |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1500761 |
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