Reconstruction of π0 and η mesons via conversion method in Au+Au at 1.23AGeV with HADES

FAIR NExt generation of ScientistS 2013

Behnke, C.^1

Goethe Universität Frankfurt, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany^1

关键词: Conversion methods;    Hadronic matters;    Lepton pairs;    Model calculations;    Model independent;    Production cross section;    Strangeness production;    Virtual photons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/503/1/012015/pdf
DOI  :  10.1088/1742-6596/503/1/012015

来源: IOP

【 摘 要 】

Lepton pairs emerging from decays of virtual photons are one of the most promising probes of dense hadronic matter. The HADES experiment at GSI Helmholtzzentrum fur Schwerionenforschung in Darmstadt studies dielectron radiation as well as strangeness production in various reactions, i.e. proton, deuteron and heavy-ion. The understanding of the corresponding experimental results calls for supporting studies from various model calculations. For a more model independent understanding of the dilepton cocktail the production cross sections of particles created during the freeze-out is crucial. In this contribution we will present results from a two photon analysis of Au+Au in 1.23 GeV/u collisions providing information on π0and η mesons. Therefore the capability of HADES to detect e+e-pairs from external conversion of real photons will be explained and first results will be shown.