Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 16: Heavy-Ion Collisions and QCD Phases IV

HK 16.2: Talk

Tuesday, March 31, 2020, 17:30–17:45, J-HS G

Λ hyperon production in collisions of relativistic ions at the CERN SPS and FAIR SIS100 energies — •Hamda CHERIF for the CBM collaboration — Goethe University Frankfurt am Main — GSI Helmholtzzentrum für Schwerionenforschung GmbH

For more than 30 years, the production of strangeness has been proposed as a sensitive signal to QGP formation. Strange particles are of particular interest in hadronic collisions since they carry a new quantum number not present in the colliding nuclei. In that respect, the study of the production of Λ hyperons is of particular interest as it allows one to study simultaneously strangeness production and the effect of net baryon density.

The NA61/SHINE experiment at the CERN/SPS and the CBM experiment at the future facility FAIR aim to investigate the QCD phase diagram of strongly interacting matter in the region of moderate temperatures and high net-baryon densities. A systematic study of the energy dependence of Λ production has been performed previously by NA49 for Pb+Pb collisions, and recently by NA61/SHINE in p+p collisions.

In this contribution, the status of the analysis of Λ hyperons with the NA61/SHINE experiment at CERN/SPS will be presented. The study of Λ production in CBM experiment at the future FAIR facility in Darmstadt will be also presented based on simulation of Au+Au collisions at various SIS100 energies.