Münster 2017 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 39: Heavy Ion Collisions and QCD Phases VIII
HK 39.1: Gruppenbericht
Donnerstag, 30. März 2017, 14:00–14:30, F 1
Recent ALICE measurements on open heavy-flavour hadron production in pp, p–Pb, and Pb–Pb collisions at the LHC — •Andrea Dubla for the ALICE collaboration — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — Physikalisches Institut, University of Heidelberg, Heidelberg, Germany
In heavy-ion collisions at ultra-relativistic energies a de-confined state of quarks and gluons, the Quark-Gluon Plasma (QGP), is expected to be formed. Produced in hard-scattering processes in the initial stage of the collision, heavy quarks are a powerful tool to probe the partonic interactions ongoing in the medium. The analysis of the transverse momentum spectra and of the azimuthal anisotropy of heavy-flavour particles in Pb–Pb collisions provides crucial information on the mechanisms of parton energy loss, hadronisation and thermalization in the hot and dense state of matter. Heavy-flavour measurements in pp collisions provide a baseline for the results from Pb–Pb data, and an important test of perturbative QCD. In heavy-ion collisions, the nuclear nature of the incoming projectiles also give rise to cold nuclear matter effects such as modification of parton densities in nuclei, momentum broadening and shadowing. These effects have to be disentangled from those due to the hot QGP phase. This can be studied with p–Pb collisions. The most recent results obtained in Pb–Pb collisions at √sNN = 2.76 TeV and 5.02 TeV will be discussed, together with the results measured in smaller collision systems.