Journalartikel
Autorenliste: CASSING, W; EHEHALT, W; KO, CM
Jahr der Veröffentlichung: 1995
Seiten: 35-40
Zeitschrift: Physics Letters B
Bandnummer: 363
Heftnummer: 1-2
ISSN: 0370-2693
Open Access Status: Green
DOI Link: https://doi.org/10.1016/0370-2693(95)01214-B
Verlag: Elsevier
Abstract:
We present a dynamical study of e(+)e(-) production in proton-nucleus and nucleus-nucleus collisions at SPS energies on the basis of a covariant transport approach. For p + A reactions the dilepton yield for invariant masses m less than or equal to 1.2 GeV is found to be dominated by the decays of the eta,rho,omega and Phi mesons in line with the findings of the CERES Collaboration. For S + Au collisions at 200 GeV/A the dilepton yield is, however, dominated by pi(+)pi(-) annihilation due to the high pion densities achieved. For 'free' meson masses and form factors the experimental cross section is slightly underestimated for 0.3 GeV less than or equal to m less than or equal to 0.45 GeV. Effects due to different medium modifications of the rho-meson are studied in comparison to the CERES data.
Zitierstile
Harvard-Zitierstil: CASSING, W., EHEHALT, W. and KO, C. (1995) DILEPTON PRODUCTION AT SPS ENERGIES, Physics Letters B, 363(1-2), pp. 35-40. https://doi.org/10.1016/0370-2693(95)01214-B
APA-Zitierstil: CASSING, W., EHEHALT, W., & KO, C. (1995). DILEPTON PRODUCTION AT SPS ENERGIES. Physics Letters B. 363(1-2), 35-40. https://doi.org/10.1016/0370-2693(95)01214-B
Schlagwörter
DENSE MATTER; DIELECTRON PRODUCTION; EQUATION; FINITE-TEMPERATURE; HEAVY-ION COLLISIONS; LEPTONS; NUCLEUS-NUCLEUS COLLISIONS; QCD SUM-RULES; RELATIVISTIC HEAVY-ION COLLISIONS; RHO-MESON
