Előadó: Marianna Mazzilli (University of Houston / CERN ALICE / Wigner RCP)
Előadás címe: Probing the QGP with heavy flavour hadrons with ALICE: state of the art and future upgrades
Dátum: 2023. július 17., 14 óra
Helyszín: 2-es épület Médiaterem
Illetve online:
Zoom: https://cern.zoom.us/j/67590004845?pwd=TmhMaVpCOFhQZ3RCRUJwVUVMSFV0dz09
Meeting ID: 675 9000 4845
Passcode: 344007
Összefoglaló:
Heavy quarks (charm and beauty) are valuable probes for investigating the properties of the quark-gluon plasma (QGP) formed in ultra-relativistic heavy-ion collisions, as they are mainly produced through hard-scattering processes prior to the formation of the QGP, and their number is conserved during the subsequent QGP evolution. Measurements of the nuclear modification factor RAA of charm and beauty hadrons allow the characterisation of the in-medium energy loss of heavy quarks while traversing the QGP. Information on their diffusion and degree of participation in the medium collective motion can be obtained by measuring the elliptic-flow coefficient v2 of heavy-
flavour particles.
ALICE has planned several upgrades that will enable novel studies of the quark-gluon plasma. The main new studies in the QGP sector rely on a rich heavy flavour program. In particular, low-pT heavy-flavour production, including beauty hadrons, multi-charm baryons and charm-charm correlations, as well as on precise multi-differential measurements of dielectron emission to probe the mechanism of the time-evolution of the QGP temperature.
In this talk, the latest heavy flavour measurements that probe the QGP properties with the ALICE detector will be presented. In view of a better understanding of the in-medium heavy-quark dynamics, the reported ALICE measurements will be compared to predictions from models including different implementations of heavy-quark interaction and hadronisation with the QGP constituents. The presentation will also cover the physics performance expected with the next ALICE upgrades (foreseen for Run 4 and Run 5).
