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HK: Fachverband Physik der Hadronen und Kerne

HK 50: Heavy-Ion Collisions and QCD Phases VIII

HK 50.3: Vortrag

Donnerstag, 13. März 2025, 16:15–16:30, HS 3 Chemie

Strangeness fluctuations in the HADES experiment^* — •Athira Sreejith — Bergische Universität Wuppertal, Wuppertal, Deutschland

The QCD phase diagram has been actively studied over the years in the experimental, and theoretical domains using e.g. lattice QCD. The fluctuations of conserved charges like electric charge, baryon number, and strangeness are useful probes to study the QCD phase diagram. The experimental study of higher order cumulants provides insights into potential critical behaviour, and is being analysed at different experiments. This work focuses on the analysis of strangeness fluctuations in Ag-Ag collision data at 1.58 AGeV collected with the High Acceptance DiElectron Spectrometer (HADES). HADES is a fixed target experiment at GSI, Darmstadt that investigates the properties of dense baryonic matter at lower energy regimes.

This study aims to extract strangeness fluctuations by means of charged kaons. The low particle yield at the studied low energies presents challenges, necessitating robust methods to address particle misidentification. One such approach is the Identity method, in which the particle identification is based on probabilities rather than hard cuts. This method is implemented in the TIdentity module developed by M. Arslandok and A. Rustamov. This software module is used to conduct a feasibility study which will be the focus of this contribution.

^*This work is supported by “Netzwerke 2021”, an initiative of the Ministry of Culture and Science of the State of Northrhine Westphalia and BMBF (05P24PX1).

Keywords: strangeness; heavy-ion collisions; QCD phase diagram; fluctuations; HADES