The rho meson in dense matter and its influence on dilepton production rates
1993; Elsevier BV; Volume: 555; Issue: 1 Linguagem: Inglês
10.1016/0375-9474(93)90325-r
ISSN1873-1554
Autores Tópico(s)Particle physics theoretical and experimental studies
ResumoRho meson propagation in dense nuclear matter and dilepton production are considered in a phenomenological model with coupling to π+π− states. Special attention is paid to constraints from gauge invariance. Taking into account the usual π-Δh coupling it is found that the rho meson in matter is slightly quenched and shifted upwards. A new interesting structure at ~500 MeV appears in the rho-meson mass spectrum.
Referência(s)