Gießen 2007 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Theorie

HK 20.5: Vortrag

Dienstag, 13. März 2007, 18:00–18:15, C

Omega mesons in medium — •Fabian Eichstädt, Stefan Leupold, and Ulrich Mosel — Institut für Theoretische Physik, Universität Giessen, Germany

Recent experimental observation indicates a downward mass shift of the ω meson when put into a nuclear medium. Therefore it is worthwhile to take a look at theoretical approaches that can describe this mass shift. One such hadronic model was introduced by Klingl et al. (Nucl.Phys.A650:299-312,1999) The model will be shortly introduced in this talk and some of our results will be presented and compared with the previous results presented by Klingl et al. It turns out that the main approximation used by Klingl et al has no justification. A corrected calculation within this model yields unreasonable results.

Work supported by DFG.