Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 2: Heavy Ion Collisions and QCD Phases I

HK 2.3: Vortrag

Montag, 27. März 2017, 17:30–17:45, F 1

Performance of charged pions, kaons, protons and their anti-particles identification in the CBM experiment — •Viktor Klochkov^1,2 and Ilya Selyuzhenkov¹ for the CBM collaboration — ¹GSI Helmholtzzentrum für Schwerionenforschung — ²Goethe University Frankfurt

The goal of the CBM experiment at FAIR is to investigate the properties of the dense baryonic matter. Among the key observables which are used to characterize the particle production in heavy-ion collisions are the charged particle spectra, anisotropic flow, and angular correlations. The particle mass ordering and flavor dependence provide an important information on the evolution of the created matter. A procedure for particle identification in centrality classes is developed for CBM. It is based on a Bayesian approach which allows for high-purity selection of charged pions, kaons, and protons using the correlation between the signal in the CBM time-of-flight (TOF) detector and the reconstructed particle momentum. The CBM performance for charged hadron identification is studied for Au-Au collisions simulated at different SIS-100 energies. The developed procedure can be further used to unfold the contribution to physics observables from individual identified hadrons in case of low purity.

Supported by Helmholtz Graduate School for Hadron and Ion Research (HGS-HIRe) and GSI Helmholtzzentrum für Schwerionenforschung.