The elliptic flow of mesons from beauty-hadron decays (non-prompt was measured in midcentral (30–50%) Pb–Pb collisions at a centre-of-mass energy per nucleon pair TeV with the ALICE detector at the LHC. The mesons were reconstructed at midrapidity from their hadronic decay π, in the transverse momentum interval GeV/c. The result indicates a positive for non-prompt mesons with a significance of 2.7. The non-prompt -meson is lower than that of prompt non-strange D mesons with 3.2 significance in , and compatible with the of beauty-decay electrons. Theoretical calculations of beauty-quark transport in a hydrodynamically expanding medium describe the measurement within uncertainties.
Measurement of non-prompt D -meson elliptic flow in Pb–Pb collisions at √sNN=5.02 TeV
A. De Caro;D. De Gruttola;S. De Pasquale;L. Dello Stritto;N. Funicello;R. Ricci;T. Virgili;
2023
Abstract
The elliptic flow of mesons from beauty-hadron decays (non-prompt was measured in midcentral (30–50%) Pb–Pb collisions at a centre-of-mass energy per nucleon pair TeV with the ALICE detector at the LHC. The mesons were reconstructed at midrapidity from their hadronic decay π, in the transverse momentum interval GeV/c. The result indicates a positive for non-prompt mesons with a significance of 2.7. The non-prompt -meson is lower than that of prompt non-strange D mesons with 3.2 significance in , and compatible with the of beauty-decay electrons. Theoretical calculations of beauty-quark transport in a hydrodynamically expanding medium describe the measurement within uncertainties.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.