2000/07/07 by W. Cassing
Physics and Astronomy · #nucl-th
published as Acta Phys.Polon. B31 (2000) 2177-2186 · invited talk presented at MESON2000, Cracow, May 2000; to appear in Acta Phys. Pol. B
arxiv created 2000/07/07 · arxiv updated 2009/12/01
The production and decay of vector mesons (ρ, ω) in pA reactions at COSY energies is studied with particular emphasis on their in-medium spectral functions. It is explored within transport calculations, if hadronic in-medium decays like π+π- or π0 γ might provide complementary information to their dilepton (e+e-) decays. Whereas the π+ π- signal from the ρ-meson is found to be strongly distorted by pion rescattering, the ω-meson Dalitz decay to π0 γ appears promising even for more heavy nuclei. The perspectives of scalar meson (f0, a0) production in pp reactions are investigated within a boson-exchange model indicating that the f0-meson might hardly be detected in these collisions in the K K or ππ decay channels whereas the exclusive channel pp → d a0+ looks very promising.