Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon)
Journal Article
·
· Physical Review Letters
- Institut de Physique Nucleaires, 43 Avenue de 11 Novembre 1918, 69622 Villeurbanne Cedex (France)
Rho meson propagation in hot hadronic matter is studied in a model with coupling to {pi}{pi} states. Medium modifications are induced by a change of the pion dispersion relation through collisions with nucleons and {Delta}{close_quote}s in the fireball. Maintaining gauge invariance dilepton production is calculated and compared to the recent data of the CERES Collaboration in central S+Au collisions at 200 GeV/u. The observed enhancement of the rate below the rho meson mass can be largely accounted for. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279475
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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