Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-12-07
Acta Physica Polonica B Proceedings Supplement vol. 5 (2012) page 555
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 6 figures, talk given at the conference Strangeness in Quark Matter 2011, Cracow, Poland
Scientific paper
10.5506/APhysPolBSupp.5.555
Heavy quarks are a unique probe to study the medium produced in ultra-relativistic heavy ion collisions. Within the partonic transport model Boltzmann approach to multi-parton scatterings (BAMPS) the production, energy loss and elliptic flow of heavy quarks are investigated in 3+1 dimensional simulations of the quark gluon plasma evolution. With only binary interactions between heavy quarks and particles from the medium calculated within perturbative QCD, the results on elliptic flow and the nuclear modification factor are not compatible with experimental data from RHIC and LHC. However, if the binary cross section is multiplied with K=4 both the elliptic flow and the nuclear modification factor are simultaneously described at RHIC and also LHC. Furthermore, preliminary results are presented that the implementation of radiative processes leads to a stronger suppression which agrees well with the measured nuclear modification factor at RHIC without the need of any K factor.
Fochler Oliver
Greiner Carsten
Uphoff Jan
Xu Zhe
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