Köln 2025 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Poster

HK 23.35: Poster

Tuesday, March 11, 2025, 17:30–19:00, Foyer Physik

Proton Emission in Ag+Ag Collisions at 1.23 AGeV measured at HADES — •Elisabeth van Engelen for the HADES collaboration — Goethe University Frankfurt

The HADES experiment investigates the QCD phase diagram at moderate temperatures and high net-baryon densities by analyzing particles emitted in heavy-ion collisions at approximately 1 AGeV. Understanding hadronic behavior under these extreme conditions is crucial for advancing our knowledge of the strong interaction at high densities. This poster presents a comprehensive differential yield analysis of protons emitted in Ag+Ag collisions at 1.23 AGeV. The analysis is based on measurements taken by HADES in March 2019, during which a smaller sample was recorded at 1.23 AGeV alongside the high-statistics sample collected at 1.58 AGeV. Combined with the data sample of Au+Au collisions at 1.23 AGeV, the collected data will allow for detailed investigations of the energy and system size dependence of proton emission. As the most frequently emitted hadrons at this energy, protons provide a unique opportunity for in-depth analysis with exceptional statistical precision. Their study offers valuable insights into the dynamics of dense nuclear matter, addressing previously underexplored aspects of these collisions.

Keywords: HADES; heavy-ion collisions; high net-baryon density; protons; differential yield analysis