Measurement of D-0, D+, D*+ and D-s(+) production in Pb-Pb collisions at root s(NN)=5:02 TeV



Acharya, S, Acosta, F T-, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU
et al (show 994 more authors) (2018) Measurement of D-0, D+, D*+ and D-s(+) production in Pb-Pb collisions at root s(NN)=5:02 TeV JOURNAL OF HIGH ENERGY PHYSICS, 2018 (10). 174-. ISSN 1029-8479, 1029-8479

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Abstract

We report measurements of the production of prompt D<sup>0</sup>, D<sup>+</sup>, D<sup>*+</sup> and D<inf>s</inf> <sup>+</sup> mesons in Pb–Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN=5.02 TeV, in the centrality classes 0–10%, 30–50% and 60–80%. The D-meson production yields are measured at mid-rapidity (|y| < 0.5) as a function of transverse momentum (p<inf>T</inf>). The p<inf>T</inf> intervals covered in central collisions are: 1 < p<inf>T</inf>< 50 GeV/c for D<sup>0</sup>, 2 < p<inf>T</inf>< 50GeV/c for D<sup>+</sup>, 3 < p<inf>T</inf>< 50GeV/c for D<sup>*+</sup>, and 4 < p<inf>T</inf>< 16GeV/c for D<inf>s</inf> <sup>+</sup> mesons. The nuclear modification factors (R<inf>AA</inf>) for non-strange D mesons (D<sup>0</sup>, D<sup>+</sup>, D<sup>*+</sup>) show minimum values of about 0.2 for p<inf>T</inf> = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at sNN=2.76 TeV. For D<inf>s</inf> <sup>+</sup> mesons, the values of R<inf>AA</inf> are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average R<inf>AA</inf> of non-strange D mesons is compatible with that of charged particles for p<inf>T</inf>> 8 GeV/c, while it is larger at lower p<inf>T</inf>. The nuclear modification factors for strange and non-strange D mesons are also compared to theoretical models with different implementations of in-medium energy loss.[Figure not available: see fulltext.]

Item Type: Article
Uncontrolled Keywords: Heavy Ion Experiments
Depositing User: Symplectic Admin
Date Deposited: 07 May 2019 10:26
Last Modified: 22 May 2026 21:24
DOI: 10.1007/JHEP10(2018)174
Open Access URL: https://doi.org/10.1007/JHEP10(2018)174
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3040061
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