Measurement of non-prompt D0-meson elliptic flow in Pb-Pb collisions at √sNN=5.02 TeV



Acharya, S, Adamova, D, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I, Akindinov, A
et al (show 1040 more authors) (2023) Measurement of non-prompt D0-meson elliptic flow in Pb-Pb collisions at √sNN=5.02 TeV EUROPEAN PHYSICAL JOURNAL C, 83 (12). 1123-. ISSN 1434-6044, 1434-6052

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Abstract

The elliptic flow (v<inf>2</inf>) of D mesons from beauty-hadron decays (non-prompt D) was measured in midcentral (30–50%) Pb–Pb collisions at a centre-of-mass energy per nucleon pair sNN=5.02 TeV with the ALICE detector at the LHC. The D mesons were reconstructed at midrapidity (| y| < 0.8) from their hadronic decay D → K <sup>-</sup>π <sup>+</sup> , in the transverse momentum interval 2 < p<inf>T</inf>< 12 GeV/c. The result indicates a positive v<inf>2</inf> for non-prompt D mesons with a significance of 2.7 σ . The non-prompt D -meson v<inf>2</inf> is lower than that of prompt non-strange D mesons with 3.2 σ significance in 2<pT<8GeV/c , and compatible with the v<inf>2</inf> of beauty-decay electrons. Theoretical calculations of beauty-quark transport in a hydrodynamically expanding medium describe the measurement within uncertainties.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 13 Aug 2024 12:57
Last Modified: 22 May 2026 20:12
DOI: 10.1140/epjc/s10052-023-12259-3
Open Access URL: https://doi.org/10.1140/epjc/s10052-023-12259-3
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3183655
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