The elliptic flow (v2) of D0 mesons from beautyhadron decays (non-prompt D0) 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 D0 mesons were reconstructed at midrapidity (|y| < 0.8) from their hadronic decay D0 → K−π+, in the transverse momentum interval 2 < pT < 12 GeV/c. The result indicates a positive v2 for non-prompt D0 mesons with a significance of 2.7σ. The non-prompt D0-meson v2 is lower than that of prompt non-strange D mesons with 3.2σ significance in 2 < pT < 8 GeV/c, and compatible with the v2 of beauty-decay electrons. Theoretical calculations of beautyquark transport in a hydrodynamically expanding medium describe the measurement within uncertainties.

Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., et al. (2023). Measurement of non-prompt D0-meson elliptic flow in Pb–Pb collisions at √sNN = 5.02 TeV. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(12), 1-17 [10.1140/epjc/s10052-023-12259-3].

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

Agrawal, N.;Alici, A.;Arcelli, S.;Bellini, F.;Carnesecchi, F.;Colocci, M.;Ercolessi, F.;Giacalone, M.;Jacazio, N.;Malfattore, G.;Rubini, N.;Scioli, G.;Strazzi, S.;
2023

Abstract

The elliptic flow (v2) of D0 mesons from beautyhadron decays (non-prompt D0) 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 D0 mesons were reconstructed at midrapidity (|y| < 0.8) from their hadronic decay D0 → K−π+, in the transverse momentum interval 2 < pT < 12 GeV/c. The result indicates a positive v2 for non-prompt D0 mesons with a significance of 2.7σ. The non-prompt D0-meson v2 is lower than that of prompt non-strange D mesons with 3.2σ significance in 2 < pT < 8 GeV/c, and compatible with the v2 of beauty-decay electrons. Theoretical calculations of beautyquark transport in a hydrodynamically expanding medium describe the measurement within uncertainties.
2023
Acharya, S., Adamová, D., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., et al. (2023). Measurement of non-prompt D0-meson elliptic flow in Pb–Pb collisions at √sNN = 5.02 TeV. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 83(12), 1-17 [10.1140/epjc/s10052-023-12259-3].
Acharya, S.; Adamová, D.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akindinov, A.; Al-Turany, M.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/954098
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