paper

Dilepton yields from Brown-Rho scaled vector mesons including memory effects

arXiv:hep-ph/0608032 · doi:10.1103/PhysRevLett.98.022301

Abstract

Brown-Rho scaling, which has been strongly discussed after recent NA60 data was presented, is investigated within a nonequilibrium field theoretical description that includes quantum mechanical memory. Dimuon yields are calculated by application of a model for the fireball, and strong modifications are found in the comparison to quasi-equilibrium calculations, which assume instantaneous adjustment of all meson properties to the surrounding medium. In addition, we show results for the situation of very broad excitations.

4 pages, 5 figures

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Dilepton yields from Brown-Rho scaled vector mesons including memory effects · wovepaper