ELFT HÍRADÓ

[Ferenc Siklér <sikler.ferenc AT wigner.hu>]

Kedves kollégák,

 Meghívunk minden érdeklődőt a Wigner FK Nagyenergiás Fizikai Osztályának jövő 
hétfői szemináriumára, július 17., 14:00-ra.

 Részletek itt, absztrakt alább:
 https://indico.wigner.hu/event/1511/

 [Az előadás a zoom-on keresztül is követhető, csatlakozási infók a fenti 
leírásban.]

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Probing the QGP with heavy flavour hadrons with ALICE: state of the art and 
future upgrades

by Marianna Mazzilli (University of Houston / CERN ALICE / Wigner RCP)

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).

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Üdvözlettel,
 Siklér Ferenc