Darmstadt 2016 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 56: Heavy Ion Collision and QCD Phases XI
HK 56.5: Talk
Thursday, March 17, 2016, 17:30–17:45, S1/01 A01
Statistical model analysis of hadron yields at SIS energies — •Manuel Lorenz for the HADES collaboration — Goethe Universität
The HADES data from p+Nb collisions at center of mass energy of √sNN= 3.2 GeV are analyzed by employing a statistical model. Accounting for the identified hadrons π0, η, Λ, Ks0, ω allows a surprisingly good description of their abundances with parameters Tchem=(99±11) MeV and µb=(619±34) MeV, which fits well in the chemical freeze-out systematics found in heavy-ion collisions. In supplement we reanalyze our previous HADES data from Ar+KCl collisions at √sNN= 2.6 GeV as well as the recent Au+Au data at √sNN= 2.4. Comparing the description of yields and the regularity of freeze-out parameters obtained from the three samples, we discuss equlibration in heavy-ion collisions in this energy regime. Supported by BMBF (05P12RFGHJ,05P15RFFCA ), GSI and HIC for FAIR.