Probing the Rho Spectral Function in Hot and Dense Nuclear Matter by Dileptons

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dc.creatorCassing, W.
dc.creatorBratkovskaya, E. L.
dc.creatorRapp, R.
dc.creatorWambach, J.
dc.date1997-08-12
dc.date1997-11-03
dc.date.accessioned2026-07-07T11:11:18Z
dc.date.available2026-07-07T11:11:18Z
dc.descriptionWe present a dynamical study of $e^+e^-$ and $μ^+ μ^-$ 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 $ρ$-meson spectral function that includes the pion modifications in the nuclear medium as well as the polarization of the $ρ$-meson due to resonant $ρ$$-N$ scattering. We find that the experimental data from the CERES and HELIOS-3 Collaborations can be described equally well as within the dropping $ρ$-mass scenario. Whereas corresponding dilepton $q_T$-spectra are found to be very similar, the inclusive dilepton yield in the invariant mass range $0.85 \leq M \leq 1.0$ GeV should allow to disentangle the two scenarios experimentally.
dc.description13 pages RevTeX slightly revised, 6 eps-figures
dc.identifierhttps://arxiv.org/abs/nucl-th/9708020
dc.identifierhttp://arxiv.org/abs/nucl-th/9708020
dc.identifierPhys.Rev.C57:916-921,1998
dc.identifierdoi:10.1103/PhysRevC.57.916
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191054
dc.subjectNuclear Theory
dc.titleProbing the Rho Spectral Function in Hot and Dense Nuclear Matter by Dileptons
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