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Title: Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon)

Abstract

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.}

Authors:
; ;  [1]
  1. Institut de Physique Nucleaires, 43 Avenue de 11 Novembre 1918, 69622 Villeurbanne Cedex (France)
Publication Date:
OSTI Identifier:
279475
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 76; Journal Issue: 3; Other Information: PBD: Jan 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; RHO-770 MESONS; PARTICLE PRODUCTION; WAVE PROPAGATION; CERN SPS SYNCHROTRON; COUPLING; DISPERSION RELATIONS; GAUGE INVARIANCE; GOLD 197 TARGET; LIPPMANN-SCHWINGER EQUATION; MASS; MEDIUM VACUUM; PION-NUCLEON INTERACTIONS; PIONS; PROPAGATOR; SULFUR 32 REACTIONS; TEV RANGE; FIREBALL MODEL

Citation Formats

Chanfray, G., Rapp, R., and Wambach, J. Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon). United States: N. p., 1996. Web. doi:10.1103/PhysRevLett.76.368.
Chanfray, G., Rapp, R., & Wambach, J. Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon). United States. doi:10.1103/PhysRevLett.76.368.
Chanfray, G., Rapp, R., and Wambach, J. Mon . "Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon)". United States. doi:10.1103/PhysRevLett.76.368.
@article{osti_279475,
title = {Medium modifications of the rho meson at CERN super proton synchrotron energies (200 GeV/nucleon)},
author = {Chanfray, G. and Rapp, R. and Wambach, J.},
abstractNote = {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.}},
doi = {10.1103/PhysRevLett.76.368},
journal = {Physical Review Letters},
number = 3,
volume = 76,
place = {United States},
year = {1996},
month = {1}
}