Publication: Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector
Дата
2019
Авторы
Balek, P.
Aaboud, M.
Aad, G.
Abbott, B.
Belotskiy, K.
Belyaev, N. L.
Bulekov, O.
Kantserov, V. A.
Ponomarenko, D.
Proklova, N.
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Аннотация
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.
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Charged-hadron suppression in Pb plus Pb and Xe plus Xe collisions measured with the ATLAS detector / Balek, P [et al.] // NUCLEAR PHYSICS A. - 2019. - 982. - P. 571-574. - 10.1016/j.nuclphysa.2018.10.079