Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Heavy Ion Collisions and QCD Phases 1
HK 5.5: Vortrag
Montag, 23. März 2015, 15:45–16:00, T/HS1
Event-by-event extraction of kinetic and chemical freeze-out properties in the CBM experiment — •Volodymyr Vovchenko1,2,3,4, Ivan Kisel1,2,3, and Dmitry Anchishkin4,5 for the CBM collaboration — 1Goethe University, Frankfurt am Main, Germany — 2Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany — 3GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — 4Taras Shevchenko University, Kyiv, Ukraine — 5Bogolyubov Institute for Theoretical Physics, Kyiv, Ukraine
The future CBM experiment at FAIR is designed to study properties of strongly interacting matter produced in heavy-ion collisions at high baryon densities. It will employ high intensity beams and large acceptance detectors. One important task is to extract the thermal parameters of matter at stages of kinetic and chemical freeze-out from the observed data.
The extraction of thermal parameters is implemented as a package within the CBMROOT framework. The kinetic freeze-out temperature and the inverse slope of charged pions are extracted from their measured momentum spectra with appropriate correction on acceptance and reconstruction efficiency. The parameters of the chemical freeze-out are extracted by fitting the measured particle ratios in the framework of Hadron Resonance Gas model. The procedures can be used to perform analysis on event-by-event as well as on the inclusive spectra level.
Supported by FIAS, HICforFAIR and HGS-HIRe for FAIR.