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Title: Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector
Authors: Balek, Petr
Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Adamczyk, L.
Keywords: xenon-xenon collisions
lead-lead collisions
charged-hadron production
nuclear modification factor
Issue Date: 2019
Publisher: Elsevier
Abstract: The ATLAS detector at the LHC recorded 0.49 nb(-1) of Pb+Pb collisions and 25 of pp(-1) collisions, both at the center-of-mass energy 5.02 TeV per nucleon pair. Recently, ATLAS also recorded 30 mu b(-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 R-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-AA obtained in the two systems are presented for different centrality intervals and the results are discussed.
ISSN: 0375-9474
Appears in Collections:WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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