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

Summary, in English

The elliptic flow (v2) 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 -π + , in the transverse momentum interval 2 < pT< 12 GeV/c. The result indicates a positive v2 for non-prompt D mesons with a significance of 2.7 σ . The non-prompt D -meson v2 is lower than that of prompt non-strange D mesons with 3.2 σ significance in 2

• Author: S. Acharya; S. Basu; P. Christiansen; J. Hansen; N Zurlo
• Department/s: Particle and nuclear physics
• Publishing year: 2023
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 83
• Issue: 12
• Links: http://dx.doi.org/10.1140/epjc/s10052-023-12259-3
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: Bosons; Hadrons; Nitrogen compounds; Tellurium compounds; A-center; Center-of-mass energies; Centre-of-mass energies; D+ mesons; Elliptic flows; Hadronic decays; Measurements of; Mid-rapidity; Pb-Pb collisions; Transverse momenta; Uncertainty analysis
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044