Low-mass dileptons and dropping rho meson mass

Abstract

Using the transport model, we have studied dilepton production from heavy-ion collisions at Bevalac energies. It is found that the enhanced production of low-mass dileptons observed in the experiment by the DLS collaboration cannot be explained by the dropping of hadron masses, in particular the $\rho$-meson mass, in dense matter.

9 pages, LaTeX, including 1 postscript figure, to appear in Phys. Lett. B

References in corpus (11)

• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Dielectron Cross Section Measurements in Nucleus-Nucleus Reactions at 1.0 A GeV
• The Spectral Function of the Rho Meson in Nuclear Matter
• P-Wave Polarization of the $\rho$-Meson and the Dilepton Spectrum in Dense Matter
• Intermediate mass excess of dilepton production in heavy ion collisions at BEVALAC energies
• Probing the Rho Spectral Function in Hot and Dense Nuclear Matter by Dileptons
• Properties of Hadrons in the Nuclear Medium
• Dilepton production and $m_T$-scaling at BEVALAC/SIS energies
• $\rho$-meson properties at finite nuclear density
• Meson $m_T$-scaling in heavy-ion collisions at SIS energies

Cited by in corpus (28)

• From Kadanoff-Baym dynamics to off-shell parton transport
• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Dilepton production and off-shell transport dynamics at SIS energies
• Excitation functions of hadronic observables from SIS to RHIC energies
• Dilepton Spectra from Decays of Light Unflavored Mesons
• Dilepton production in proton-induced reactions at SIS energies with the GiBUU transport model
• Dilepton production in heavy ion collisions at intermediate energies
• Dilepton production in nucleus-nucleus collisions at top SPS energy within the Parton-Hadron-String Dynamics (PHSD) transport approach
• Electromagnetic transition form factors and dilepton decay rates of nucleon resonances
• Role of baryonic resonances in the dilepton emission in nucleon-nucleon collisions
• System Size and Energy Dependence of Dilepton Production in Heavy-Ion Collisions at SIS Energies
• e+ e- pairs from pi- A reactions
• Production and evolution path of dileptons at HADES energies
• Dilepton production and elliptic flow from an anisotropic quark-gluon plasma
• Charm meson scattering cross sections by pion and rho meson
• Perspectives of $e^{+}{e}^{-}$ production in pp, pd and p Be reactions at SIS energies
• Effective hadronic Lagrangian for charm mesons
• Dilepton production in proton-proton collisions at BEVALAC energies
• e^+e^- production from pp reactions at BEVALAC energies
• The Vector Probe in Heavy-Ion Reactions
• Dilepton production at HADES: theoretical predictions
• Charm meson production from meson-nucleon scattering
• On the possibility of rho-meson condensation in neutron stars
• Dilepton production at SIS energies with the GiBUU transport model
• rho -> pi pi decay in nuclear medium
• Dilepton production in elementary and in heavy ion reactions
• Dilepton production from SIS to LHC energies
• Dilepton production at SIS energies