Dilepton production with the SMASH model

FAIRNESS 2016

Weil, Janus^1 ; Staudenmaier, Jan^1,2 ; Petersen, Hannah^1,2,3

Frankfurt Institute for Advanced Studies, Frankfurt

60438, Germany^1

Institut für Theoretische Physik, Goethe-Universität, Frankfurt

60438, Germany^2

GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

64291, Germany^3

关键词: Dilepton production;    Electromagnetic transitions;    Energy ranges;    Form factors;    Hadronic matters;    Heavy ion collision;    Non equilibrium;    Resonance state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/742/1/012034/pdf
DOI  :  10.1088/1742-6596/742/1/012034

来源: IOP

【 摘 要 】

In this work the SMASH model is presented ("Simulating Many Accelerated Strongly-Interacting Hadrons"), a next-generation hadronic transport approach, which is designed to describe the non-equilibrium evolution of hadronic matter in heavy-ion collisions. We discuss first dilepton spectra obtained with SMASH in the few-GeV energy range of GSI/FAIR, where the dynamics of hadronic matter is dominated by the production and decay of various resonance states. In particular we show how electromagnetic transition form factors can emerge in a transport picture under the hypothesis of vector-meson dominance.