Measurement of non-prompt D0-meson elliptic flow in Pb–Pb collisions at sNN=5.02 TeV.
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| Title: | Measurement of non-prompt D0-meson elliptic flow in Pb–Pb collisions at sNN=5.02 TeV. |
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| Authors: | ALICE Collaboration (AUTHOR), Acharya, S.1 (AUTHOR), Adamová, D.2 (AUTHOR), Aglieri Rinella, G.3 (AUTHOR), Agnello, M.4 (AUTHOR), Agrawal, N.5 (AUTHOR), Ahammed, Z.6 (AUTHOR), Ahmad, S.7 (AUTHOR), Ahn, S. U.8 (AUTHOR), Ahuja, I.9 (AUTHOR), Akindinov, A.10 (AUTHOR), Al-Turany, M.11 (AUTHOR), Aleksandrov, D.10 (AUTHOR), Alessandro, B.12 (AUTHOR), Alfanda, H. M.13 (AUTHOR), Alfaro Molina, R.14 (AUTHOR), Ali, B.7 (AUTHOR), Alici, A.15 (AUTHOR), Alizadehvandchali, N.16 (AUTHOR), Alkin, A.3 (AUTHOR) |
| Source: | European Physical Journal C -- Particles & Fields. Dec2023, Vol. 83 Issue 12, p1-17. 17p. |
| Subjects: | Particles (Nuclear physics), Measurement, Electrons, Detectors, Mesons |
| Abstract: | The elliptic flow (v 2) of D 0 mesons from beauty-hadron decays (non-prompt D 0) was measured in midcentral (30–50%) Pb–Pb collisions at a centre-of-mass energy per nucleon pair s NN = 5.02 TeV with the ALICE detector at the LHC. The D 0 mesons were reconstructed at midrapidity (| y | < 0.8) from their hadronic decay D 0 → K - π + , in the transverse momentum interval 2 < p T < 12 GeV/c. The result indicates a positive v 2 for non-prompt D 0 mesons with a significance of 2.7 σ . The non-prompt D 0 -meson v 2 is lower than that of prompt non-strange D mesons with 3.2 σ significance in 2 < p T < 8 GeV / c , and compatible with the v 2 of beauty-decay electrons. Theoretical calculations of beauty-quark transport in a hydrodynamically expanding medium describe the measurement within uncertainties. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The elliptic flow (v 2) of D 0 mesons from beauty-hadron decays (non-prompt D 0) was measured in midcentral (30–50%) Pb–Pb collisions at a centre-of-mass energy per nucleon pair s NN = 5.02 TeV with the ALICE detector at the LHC. The D 0 mesons were reconstructed at midrapidity (| y | < 0.8) from their hadronic decay D 0 → K - π + , in the transverse momentum interval 2 < p T < 12 GeV/c. The result indicates a positive v 2 for non-prompt D 0 mesons with a significance of 2.7 σ . The non-prompt D 0 -meson v 2 is lower than that of prompt non-strange D mesons with 3.2 σ significance in 2 < p T < 8 GeV / c , and compatible with the v 2 of beauty-decay electrons. Theoretical calculations of beauty-quark transport in a hydrodynamically expanding medium describe the measurement within uncertainties. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-023-12259-3 |
