Inclusive heavy-flavour production at central and forward rapidity in Xe-Xe collisions at , √sNN=5.44 TeV



Acharya, S, Adamova, D, Adler, A, Adolfsson, J, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU
et al (show 988 more authors) (2021) Inclusive heavy-flavour production at central and forward rapidity in Xe-Xe collisions at , √sNN=5.44 TeV PHYSICS LETTERS B, 819. 136437-. ISSN 0370-2693, 1873-2445

Access the full-text of this item by clicking on the Open Access link.

Abstract

The first measurements of the production of muons and electrons from heavy-flavour hadron decays in Xe–Xe collisions at s<inf>NN</inf>=5.44 TeV, using the ALICE detector at the LHC, are reported. The measurement of the nuclear modification factor R<inf>AA</inf> is performed as a function of transverse momentum p<inf>T</inf> in several centrality classes at forward rapidity (2.5<y<4) and midrapidity (|y|<0.8) for muons and electrons from heavy-flavour hadron decays, respectively. A suppression by a factor up to about 2.5 compared to the binary-scaled pp reference is observed in central collisions at both central and forward rapidities. The R<inf>AA</inf> of muons from heavy-flavour hadron decays is compared to previous measurements in Pb–Pb collisions at s<inf>NN</inf>=5.02 TeV. When the nuclear modification factors are compared in the centrality classes 0–10% for Xe–Xe collisions and 10–20% for Pb–Pb collisions, which have similar charged-particle multiplicity density, a similar suppression, with R<inf>AA</inf>∼0.4 in the p<inf>T</inf> interval 4<p<inf>T</inf><8 GeV/c, is observed. The comparison of the measured R<inf>AA</inf> values in the two collision systems brings new insights on the properties of the quark-gluon plasma by investigating the system-size and geometry dependence of medium-induced parton energy loss. The results of muons and electrons from heavy-flavour hadron decays provide new constraints to model calculations.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 15 Dec 2021 16:19
Last Modified: 16 Jun 2026 11:49
DOI: 10.1016/j.physletb.2021.136437
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3145439
Disclaimer: The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.