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TitleCharged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector
Author(s)Onofre, A.
Castro, Nuno Filipe
ATLAS Collaboration
Keywordsxenon-xenon collisions
lead-lead collisions
charged-hadron production
nuclear modification factor
Issue date2019
JournalNuclear Physics A
CitationBalek, P., Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., . . . Collaboration, A. (2019). Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector. Nuclear Physics A, 982, 571-574. doi: 10.1016/j.nuclphysa.2018.10.079
Abstract(s)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.
Publisher version
AccessOpen access
Appears in Collections:LIP - Artigos/papers

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