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Properties of the rho meson in nuclear matter

1994; American Institute of Physics; Volume: 49; Issue: 2 Linguagem: Inglês

10.1103/physrevc.49.1185

1538-4497

C. M. Shakin, Weidong Sun,

Particle physics theoretical and experimental studies

We calculate the vector-isovector hadronic current correlation function in the presence of nuclear matter. We find that the rho mass decreases by about 20% at nuclear matter density and the rho width is reduced by about 35%. These results are in general accord with the results of calculations made using QCD sum rules. In our calculations, and in the QCD sum-rule calclations, the main effect considered is reduction of the value of the quark condensate in the presence of matter. That reduction is here assumed to be 35% at nuclear matter density.