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

Bjoern Schenke·Carsten Greiner
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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.

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Bjoern Schenke, Carsten Greiner. 2006-08-03. Dilepton yields from Brown-Rho scaled vector mesons including memory effects. https://doi.org/10.1103/physrevlett.98.022301

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