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https://hdl.handle.net/20.500.11851/10809
Title: | Charged-Hadron Production in Pp, P+pb, Pb+pb, and Xe+xe Collisions at √snn = 5 Tev With the Atlas Detector at the Lhc | Authors: | Aad, G. Abbott, B. Abeling, K. Abidi, S.H. Aboulhorma, A. Abramowicz, H. Abreu, H. |
Keywords: | Heavy Ion Experiments | Publisher: | Springer Science and Business Media Deutschland GmbH | Abstract: | This paper presents measurements of charged-hadron spectra obtained in pp, p+Pb, and Pb+Pb collisions at s or sNN = 5.02 TeV, and in Xe+Xe collisions at sNN = 5.44 TeV. The data recorded by the ATLAS detector at the LHC have total integrated luminosities of 25 pb−1, 28 nb−1, 0.50 nb−1, and 3 μb−1, respectively. The nuclear modification factors RpPb and R AA are obtained by comparing the spectra in heavy-ion and pp collisions in a wide range of charged-particle transverse momenta and pseudorapidity. The nuclear modification factor RpPb shows a moderate enhancement above unity with a maximum at p T ≈ 3 GeV; the enhancement is stronger in the Pb-going direction. The nuclear modification factors in both Pb+Pb and Xe+Xe collisions feature a significant, centrality-dependent suppression. They show a similar distinct p T-dependence with a local maximum at p T ≈ 2 GeV and a local minimum at p T ≈ 7 GeV. This dependence is more distinguishable in more central collisions. No significant |η|-dependence is found. A comprehensive comparison with several theoretical predictions is also provided. They typically describe R AA better in central collisions and in the p T range from about 10 to 100 GeV. [Figure not available: see fulltext.] © 2023, The Author(s). | URI: | https://doi.org/10.1007/JHEP07(2023)074 https://hdl.handle.net/20.500.11851/10809 |
ISSN: | 1029-8479 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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