Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 17: Hadronenstruktur und -spektroskopie

HK 17.2: Vortrag

Montag, 4. März 2013, 17:00–17:15, HSZ-204

Investigating in-medium properties of the ω meson via the ω→π⁰γ decay — •Janus Weil^1,2, Ulrich Mosel¹, and Volker Metag³ — ¹Institut für Theoretische Physik, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany — ²Present address: Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Str. 1, D-60438 Frankfurt — ³II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany

We investigate the feasibility of studying in-medium properties of the ω meson in photoproduction experiments via the decay ω→π⁰γ. We use the GiBUU transport model to compare different methods of obtaining in-medium information, such as the invariant mass spectrum, transparency ratio, excitation function and momentum spectrum. We show that the final-state interaction of the pion poses a major obstacle for the interpretation of the invariant mass spectrum. We also demonstrate that the other three observables are fairly independent of final-state interactions and thus can give access to the ω in-medium properties.
Work supported by HIC-for-FAIR, HGS-HIRe and DFG under TR16.