Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector



Balek, Petr, Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL
et al (show 2909 more authors) (2019) Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector. NUCLEAR PHYSICS A, 982. pp. 571-574.

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Abstract

The ATLAS detector at the LHC recorded 0.49nb$^{-1}$ of Pb+Pb collisions and 25pb$^{-1}$ of $pp$ collisions, both at the center-of-mass energy 5.02TeV per nucleon pair. Recently, ATLAS also recorded 3$\mu$b$^{-1}$ of Xe+Xe collisions at the center-of-mass energy 5.44TeV, which provides a new opportunity to study the system-size dependence of the charged-hadron production in heavy-ion collisions. The large acceptance of the ATLAS detector allows to measure the spectra of charged hadrons in a wide range of pseudorapidity and transverse momentum. The nuclear modification factors $R_\mathrm{AA}$ are constructed as a ratio of the spectra measured in Pb+Pb or Xe+Xe collisions to that measured in $pp$ collisions. The $R_\mathrm{AA}$ obtained in the two systems are presented for different centrality intervals and the results are discussed.

Item Type: Article
Additional Information: 4 pages, 5 figures, presented at Quark Matter 2018
Uncontrolled Keywords: xenon-xenon collisions, lead-lead collisions, charged-hadron production, nuclear modification factor
Depositing User: Symplectic Admin
Date Deposited: 30 Apr 2019 10:15
Last Modified: 16 Dec 2022 03:55
DOI: 10.1016/j.nuclphysa.2018.10.079
Open Access URL: https://doi.org/10.1016/j.nuclphysa.2018.10.079
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3039047