Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 62: Schwerionenkollisionen und QCD Phasen
HK 62.7: Vortrag
Donnerstag, 7. März 2013, 15:45–16:00, HSZ-201
Simulations of heavy ion collisions in a pQCD-based partonic transport model and a closer look on the Gunion-Bertsch approximation — •Oliver Fochler1, Jan Uphoff1, Zhe Xu2, and Carsten Greiner1 — 1Institut für Theoretische Physik, Goethe-Universität Frankfurt, Max-von-Laue-Straße 1, D-60438 Frankfurt, Germany — 2Department of Physics, Tsinghua University, Beijing, China
The perturbative QCD-based partonic transport model BAMPS (Boltzmann
Approach to Multi-Parton Scatterings) incorporates binary interactions
of gluons and quarks based on leading order pQCD cross sections as
well as 2<->3 processes that obey detailed balance and are based on
the Gunion-Bertsch approximation of the radiative matrix element. The
validity of the Gunion-Bertsch approximation and its application to
Boltzmann transport is discussed and compared to the exact leading
order matrix element by Berends et al. Based on this analysis,
improvements to the commonly used version of the Gunion-Bertsch
approximation are discussed that are necessary when computing
transport rates. First results on the implications on fully dynamic
simulations of heavy ion collisions at RHIC and at LHC energies within
our transport model BAMPS will be discussed.
Supported by BMBF.