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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Hadron Structure and Spectroscopy II

HK 11.5: Talk

Monday, March 11, 2024, 17:45–18:00, HBR 62: EG 19

Dilepton production in proton-proton reaction at 4.5 GeV with the HADES spectrometer — •Rayane Abou Yassine for the HADES collaboration — TU Darmstadt — GSI Helmholtzzentrum für Schwerionenforschung GmbH — Laboratoire de Physique des 2 infinis Irène Joliot- Curie, Université Paris-Saclay, France

The investigation of dilepton production in hadron collisions is an important tool to study the electromagnetic decays of resonances. It provides a reference spectra for the hot and dense matter effects (heavy-ion collisions A+A). In February 2022, the HADES collaboration measured p+p collisions at 4.5 GeV beam kinetic energy. In this contribution we present results for the multi-differential analysis of signal spectra as well as the vector meson production cross section.

Keywords: Hadronic physics; Dielectron pairs; Baryonic resonances; Dalitz decay; Vector meson