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HK: Fachverband Physik der Hadronen und Kerne

HK 71: Hadron Structure and Spectroscopy X

HK 71.2: Vortrag

Donnerstag, 14. März 2024, 16:00–16:15, HBR 62: EG 19

Partial Wave Analysis for Pion-Induced Resonance Studies in the HADES Experiment — •Ahmed M. Foda for the HADES collaboration — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Deutschland

The High Acceptance Di-lepton Spectrometer (HADES) collaboration at GSI employs a pion beam to examine the characteristics of baryonic resonances and their decay channels. This pion-beam facility possess a significant advantage over proton-induced reactions and provides complementary information to photo-induced studies. Furthermore, HADES has a particular interest in studying the role and medium modification of vector mesons in heavy-ion collisions in baryon-dense matter. Elementary pion-induced studies on the proton combined with a partial wave analysis (PWA) will provide insights into the couplings of baryonic resonances to ρ N and ω N final states in greater detail, will provide insights into the impact of the melting of the ρ meson in heavy ion collisions and the involvement of intermediary vector mesons in dilepton emissions.

In anticipation of conducting a more comprehensive exploration of the resonance regions in pion-proton collisions, a new implementation of the K-Matrix & N/D frameworks is currently under development. This updated implementation aims to offer a refined mapping of these regions. Example fits will be presented showing the current status and the potential of the new framework.

Keywords: partial wave analysis; hadrons; electronmagetic transition form factors; di-lepton; pion-beam