Low mass dilepton production at ultrarelativistic energies

Abstract

Dilepton production in $pp$ and $Au+Au$ nucleus-nucleus collisions at $\sqrt{s}$ = 200 GeV as well as in $In+In$ and $Pb+Au$ at 158 A$\cdot$GeV is studied within the microscopic HSD transport approach. A comparison to the data from the PHENIX Collaboration at RHIC shows that standard in-medium effects of the $\rho ,\omega$ vector mesons - compatible with the NA60 data for $In+In$ at 158 A$\cdot$GeV and the CERES data for $Pb+Au$ at 158 A$\cdot$GeV - do not explain the large enhancement observed in the invariant mass regime from 0.2 to 0.5 GeV in $Au+Au$ collisions at $\sqrt{s}$ = 200 GeV relative to $pp$ collisions.

13 pages, 6 figures, extended version, Phys. Lett. B, in press

References in corpus (14)

• Comprehensive Interpretation of Thermal Dileptons at the SPS
• Dilepton production and off-shell transport dynamics at SIS energies
• Modification of the rho meson detected by low-mass electron-positron pairs in central Pb-Au collisions at 158 A GeV/c
• Study of dielectron production in C+C collisions at 1 AGeV
• NA60 results on the rho spectral function in In-In collisions
• Dilepton mass spectra in p+p collisions at sqrt(s)= 200 GeV and the contribution from open charm
• Low Mass Dimuons Produced in Relativistic Nuclear Collisions
• Thermal Dimuon Yields at NA60
• Enhancement of the dielectron continuum in sqrt{s_NN} = 200 GeV Au+Au collisions
• NA60 results on $p_T$ spectra and the $\rho$ spectral function in In-In collisions
• Theory and Phenomenology of Vector Mesons in Medium
• Dileptons and Medium Effects in Heavy-Ion Collisions
• Reply to 'Comment on: 'Non-perturbative finite T broadening of the rho meson and dilepton emission in heavy ion-collisions''
• Intermediate mass dileptons in relativistic nuclear collisions

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• Dilepton production in proton-proton and Pb+Pb collisions at sqrt(s_NN)=2.76 TeV
• Dilepton production in p+p, Cu+Cu and Au+Au collisions at 200 AGeV
• Phenomenology of photon and di-lepton production in relativistic nuclear collisions
• Low Mass Dilepton Rate from the Deconfined Phase
• Hadronic matter at the edge: A survey of some theoretical approaches to the physics of the QCD phase diagram
• Vector Meson Spectral Functions in a Coarse-Graining Approach
• Electromagnetic probes in heavy-ion collisions: Messengers from the hot and dense phase
• The Extraordinary Glow