Charged-hadron suppression in Pb+Pb and Xe+Xe collisions measured with the ATLAS detector Balek, Petr Aguilar Saavedra, Juan Antonio Atlas Collaboration Xenon–xenon collisions Lead–lead collisions, Charged-hadron production Nuclear modification factor 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 3 μb−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 chargedhadron 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. 2020-01-21T11:33:16Z 2020-01-21T11:33:16Z 2018 info:eu-repo/semantics/article Balek, P. (2019). Charged-hadron suppression in Pb+ Pb and Xe+ Xe collisions measured with the ATLAS detector. arXiv preprint arXiv:1908.11636. http://hdl.handle.net/10481/58966 10.1016/j.nuclphysa.2018.10.079 eng http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess Atribución-NoComercial-SinDerivadas 3.0 España Elsevier BV