Journalartikel

Jahr der Veröffentlichung: 1998

Seiten: 916-921

Zeitschrift: Physical Review C

Bandnummer: 57

Heftnummer: 2

ISSN: 0556-2813

eISSN: 1089-490X

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.57.916

Verlag: American Physical Society

Abstract: 
We present a dynamical study e(+)e(-) and mu(+)mu(-) production in proton-nucleus and nucleus-nucleus collisions at CERN-SPS energies on the basis of the covariant transport approach HSD employing a momentum-dependent rho-meson spectral function that includes the pion modifications ill tilt nuclear medium as well as the polarization of the rho meson due to resonant rho-N scattering. We find that the experimental data from the CERES and HELIOS-3 Collaborations can be described equally well as within the dropping rho-mass scenario. Whereas corresponding dilepton q(T) spectra are found to be very similar, the inclusive dilepton yield in the invariant mass range 0.85 less than or equal to M less than or equal to 1.0 GeV should allow us to disentangle the two scenarios experimentally.

Harvard-Zitierstil: Cassing, W., Bratkovskaya, E., Rapp, R. and Wambach, J. (1998) Probing the ρ spectral function in hot and dense nuclear matter by dileptons, Physical Review C, 57(2), pp. 916-921. https://doi.org/10.1103/PhysRevC.57.916

APA-Zitierstil: Cassing, W., Bratkovskaya, E., Rapp, R., & Wambach, J. (1998). Probing the ρ spectral function in hot and dense nuclear matter by dileptons. Physical Review C. 57(2), 916-921. https://doi.org/10.1103/PhysRevC.57.916