Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Heavy Ion Collisions and QCD Phases X

HK 47.8: Vortrag

Donnerstag, 30. März 2017, 18:45–19:00, F 1

Online reconstruction of multi-strange hyperons with the CBM experiment — •Hamda Cherif1,2, Alberica Toia1,2, and Iouri Vassiliev2 for the CBM collaboration — 1Goethe Universität Frankfurt am Main — 2GSI Helmholtzzentrum für Schwerionenforschung

The Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research in Darmstadt is a dedicated heavy ion experiment which will operate in fixed target mode at beam energies up to 11A GeV for ions delivered by the SIS100 accelerator. The CBM physics program is devoted to the exploration of the QCD phase diagram at high net-baryon densities. One of the main experimental challenges is the measurement of very rare probes, which requires an interaction rate of up to 10 MHz.

We study the production of multi-strange (anti)hyperons as one of the earliest proposed signatures for the formation of a Quark Gluon Plasma. The reconstruction of multi-strange hyperons in CBM is based on their weak decay topology, characterized by one or more displaced vertices, and reaches a reconstruction efficiency of about 20% for Λ, 8% for Ξ and 5% for Ω . In this presentation, we discuss the performance of the online event selection of multi-strange hyperons in Au+Au collisions at various SIS100 energies.

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