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Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Hadronenstruktur und -spektroskopie IV

HK 17.6: Vortrag

Dienstag, 16. März 2010, 15:15–15:30, HG IV

Observing In-Medium Properties of Vector Mesons in Elementary Nuclear Reactions — •Janus Weil and Ulrich Mosel — Institut für Theoretische Physik, Universität Giessen

We investigate in-medium properties of vector mesons in photon- and proton-induced nuclear reactions within the GiBUU transport model [1]. While our main focus lies on the simulation of dilepton spectra, as measured by g7 (JLAB), HADES (GSI) and E325 (KEK) [2,3], we also treat hadronic decay modes like ω→π0γ, which is being studied experimentally by the TAPS group [4]. Our analysis aims for an investigation of in-medium modifications of the light vector mesons in cold nuclear matter, i.e. collisional broadening and mass shifts, and the question how experimentally accessible observables are influenced by such effects.


[1] http://gibuu.physik.uni-giessen.de

[2] M. H. Wood et al., Phys. Rev. C 78, 015201 (2008).

[3] M. Naruki et al., Phys. Rev. Lett. 96, 092301 (2006).

[4] M. Kotulla et al., Phys. Rev. Lett. 100, 192302 (2008).

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