RHIC and LHC heavy ion collisions with pQCD Boltzmann transport

International Workshop on Discovery Physics at the LHC 2012

Bouras, I.^1 ; Fochler, O.^1 ; Reining, F.^1 ; Senzel, F.^1 ; Uphoff, J.^1 ; Wesp, C.^1 ; Xu, Z.^2 ; Greiner, C.^1

Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany^1

Department of Physics, Tsinghua University, Beijing 100084, China^2

关键词: Boltzmann transport;    Collective effects;    Double peak structure;    Heavy ion collision;    Inelastic process;    Reconstruction algorithms;    Relativistic heavy ion collision;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/455/1/012051/pdf
DOI  :  10.1088/1742-6596/455/1/012051

来源: IOP

【 摘 要 】

We discuss recent applications of the partonic perturbative QCD based cascade model BAMPS with focus on heavy-ion phenomeneology in hard and soft momentum range. First, the elliptic flow and suppression of charm and bottom quarks are studied at LHC energies. Thereafter, we compare in a detailed study the standard Gunion-Bertsch approximation of the matrix elements for inelastic processes to the exact results at leading order perturbative QCD. Since a disagreement is found, we propose an improved Gunion-Bertsch matrix element, which agrees with the exact result in all phase space regions. In addition to recent jet-quenching investigations we present results on the application of jet reconstruction algorithms in BAMPS. Finally, jet phenomena inducing collective effects such as Mach cones, are demonstrated in an expanding medium at relativistic heavy-ion collisions. We address the question, whether the signal of a Mach cones is the origin for a double peak structure in extracted two-particle correlations.