$ρ$ meson broadening and dilepton production in heavy ion collisions

Details $ρ$ meson broadening and dilepton production in heavy ion collisions $ρ$ meson broadening and dilepton production in heavy ion collisions

1999-06-28

arxiv.org/abs/nucl-th/9906087v3

Nucl.Phys. A661 (1999) 518-521

Physics

Nuclear Physics

Nuclear Theory

4 pages, LaTeX, including 4 Postscript figures, to appear in Proc. of QM'99, Nucl. Phys. A

Scientific paper

The modification of the width of the rho meson due to in-medium decays and
collisions is evaluated. In high temperature and/or high density hadronic
matter, the collision width is much larger than the one-loop decay width. The
large width of the $\rho$ meson in matter seems to be consistent with some
current interpretations of the $e^+ e^-$ mass spectra measured at the CERN/SPS.

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