Abstract
The full space-time evolution of gluons, light and heavy quarks in ultra-relativistic heavy-ion collisions is studied within the partonic transport model Boltzmann Approach to MultiParton Scatterings (BAMPS). We discuss for light and heavy quarks the elastic and radiative energy loss with a running coupling. Radiative processes, in particular, are implemented through an improved version of the Gunion-Bertsch matrix element, which is derived from comparisons to the exact result, explicitly taking finite heavy quark masses into account. Subsequently, we present results with and without radiative processes and compare them to experimental data at LHC. A focus is put on the nuclear modification factor of charged hadrons and D mesons.
Highlights
In ultra-relativistic heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) at BNL [1, 2] and the Large Hadron Collider (LHC) at CERN [3] a hot and dense medium is produced
Before radiative heavy quark processes have been implemented in Boltzmann Approach to MultiParton Scatterings (BAMPS), we mimicked their influence by effectively increasing the elastic cross section by a factor K = 3.5, which is tuned to the elliptic flow data of heavy flavor electrons at RHIC [7]
The nuclear modification factor of heavy flavor electrons at RHIC can be described with the same parameter
Summary
In ultra-relativistic heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) at BNL [1, 2] and the Large Hadron Collider (LHC) at CERN [3] a hot and dense medium is produced. In this paper we study the nuclear modification factor and elliptic flow of heavy flavor particles at LHC within the partonic transport model BAMPS. We calculate the elastic and radiative energy loss of light and heavy quarks in a static thermal medium.
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