Influence of pion-delta-hole configuration on the rho meson mass spectrum in dense hadronic matter
G. Chanfray, P. Schuck
Abstract
We discuss medium modification of the rho meson originating from its coupling to in medium quasi-pions and delta-hole states. This medium effect leads to a marked structure of the rho meson strength function in the 500 MeV invariant mass region. We suggest that this effect may provide an explanation of the structure observed by the DLS collaboration in the Ca+Ca/C+C ratio at 1 GeV/u.
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