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Type: Journal article
Title: Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector
Author: Balek, P.
Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adam, L.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adiguzel, A.
et al.
Citation: Nuclear Physics A, 2019; 982:571-574
Publisher: Elsevier
Issue Date: 2019
ISSN: 0375-9474
Statement of
Petr Balek, M Aaboud, G. Aad, B. Abbott, G. Abdinov ... Paul D Jackson ... Abhishek Sharma ... et al.
Abstract: The ATLAS detector at the LHC recorded 0.49 nb−1 of Pb+Pb collisions and 25 pb−1 of pp collisions, both at the center-of-mass energy 5.02 TeV per nucleon pair. Recently, ATLAS also recorded 3μb−1 of Xe+Xe collisions at the center-of-mass energy 5.44 TeV, 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 RAA are constructed as a ratio of the spectra measured in Pb+Pb or Xe+Xe collisions to that measured in pp collisions. The RAA obtained in the two systems are presented for different centrality intervals and the results are discussed.
Keywords: Xenon–xenon collisions; lead–lead collisions; charged-hadron production; nuclear modification factor
Rights: © 2018 The Authors. Published by Elsevier B.V.
DOI: 10.1016/j.nuclphysa.2018.10.079
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