Heidelberg 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 53: Heavy Ion Collisions and QCD Phases 6
HK 53.7: Vortrag
Donnerstag, 26. März 2015, 16:15–16:30, T/HS1
Towards a Realistic Event Generator for In-Medium Signals — •Florian Seck for the HADES collaboration — TU Darmstadt
The most important task of theoretical heavy-ion physics is to link experimental observables to the bulk properties and the microscopic structure of the different phases of strongly interacting matter.
Until now the hadronic cocktails produced with the event generator Pluto for the HADES and CBM experiments only included a contribution from freeze-out ρ mesons modeled by a Breit-Wigner distribution around its pole mass.
However as dileptons are radiated from the fireball during the whole time evolution, medium effects like the broadening of the ρ should also be included in the simulations. Calculations of the in-medium ρ spectral function by R. Rapp and J. Wambach demonstrate, that a large part of the in-medium ρ mesons feed into the mass region below the ρ/ω pole mass down to zero masses.
The modular structure of Pluto makes it feasible to customize the event generator and incorporate models of in-medium physics, like the Rapp-Wambach spectral function, as plug-ins. For masses above 1 GeV/c2 we include emission due to multi-pion annihilation and due to QGP radiation.
In this contribution first steps towards the implementation of such a plug-in into the event generator Pluto are presented.
This work has been supported by VH-NG-823, Helmholtz Alliance HA216/EMMI and GSI.