pion-rho-omega vertex in nuclear matter

Details pion-rho-omega vertex in nuclear matter pion-rho-omega vertex in nuclear matter

2002-02-14

arxiv.org/abs/nucl-th/0202043v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, to appear in Proc. 2nd International Symposium on Quantum Theory and Symmetries, Cracow, 18-21 July 2001

Scientific paper

Medium modifications of the pion-omega-rho vertex are analyzed in context of the omega -> pi gamma* and rho -> pi gamma* decays in nuclear matter. A relativistic hadronic model with mesons, nucleons, and Delta(1232)isobars is applied. A substantial increase of the widths for the decays omega -> pi gamma* and rho -> pi gamma* is found for photon virtualities in the range 0.3-0.6 GeV. This enhancement has a direct importance for the description of dilepton yields obtained in relativistic heavy-ion collisions.

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