Florian Senzel (Goethe-Universität Frankfurt)
An updated version of the partonic transport model Boltzmann Approach to Multi-Parton Scatterings (BAMPS) is presented, which numerically solves the 3+1D Boltzmann equation by allowing interactions among all parton species: gluons, light quarks, and heavy quarks with both elastic and inelastic collisions. We introduce the improved Gunion-Bertsch matrix element, which cures problems of the original Gunion-Bertsch result in characteristic regions of the phase space. Based on extensive numerical calculations, the improved matrix element agrees well with the exact pQCD calculation. While employing the new matrix element, important properties of the quark-gluon plasma created in heavy-ion collisions such as the thermalization time of the plasma and the shear viscosity over entropy density ratio are calculated within the microscopic transport model BAMPS. Furthermore, we compare our results of the nuclear modification factor and elliptic flow to experimental data measured at RHIC and LHC.
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Prof. Carsten Greiner (University of Frankfurt)
Christian Wesp (Goethe Universität Frankfurt) Florian Senzel (Goethe-Universität Frankfurt) Jan Uphoff (Goethe University Frankfurt) Dr Oliver Fochler (Goethe-Universität Frankfurt) Prof. Zhe Xu (Tsinghua University Beijing)