Münster 2011 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 15: Schwerionenkollisionen und QCD Phasen III
HK 15.1: Gruppenbericht
Dienstag, 22. März 2011, 14:00–14:30, HS AP
Hard probes within a pQCD-based partonic transport model — Oliver Fochler1, •Jan Uphoff1, Zhe Xu2,1, and Carsten Greiner1 — 1Goethe-Universität Frankfurt — 2Frankfurt Institute for Advanced Studies
High-energy partons and heavy quarks are studied in fully dynamic simulations of heavy-ion collisions at RHIC and LHC energies within the perturbative QCD-based partonic transport model BAMPS. In this framework we investigate simultaneously jet-quenching and elliptic flow of gluons, light quarks and heavy quarks. For gluons and light quarks the model consistently features elastic and inelastic 2 ↔ 3 processes, the latter being based on the Gunion-Bertsch matrix element. Currently, heavy quarks only scatter elastically with light partons, but this process is treated accurately with improved Debye screening and running coupling. The nuclear modification factor stemming from the fragmentation of gluons and light quarks is investigated for different impact parameters at RHIC energies and for central LHC collisions. The experimentally measured nuclear modification factor and elliptic flow of heavy quarks can be explained simultaneously within BAMPS, but only if the cross section is enhanced by a factor of 4. Furthermore, we present results on open charm and J/psi production in the medium.