Dilepton production at HADES: theoretical predictions

Abstract

Dileptons represent a unique probe for nuclear matter under extreme conditions reached in heavy-ion collisions. They allow to study meson properties, like mass and decay width, at various density and temperature regimes. Present days models allow generally a good description of dilepton spectra in ultra-relativistic heavy ion collision. For the energy regime of a few GeV/nucleon, important discrepancies between theory and experiment, known as the DLS puzzle, have been observed. Various models, including the one developed by the Tübingen group, have tried to address this problem, but have proven only partially successful. High precision spectra of dilepton emission in heavy-ion reactions at 1 and 2 GeV/nucleon will be released in the near future by the HADES Collaboration at GSI. Here we present the predictions for dilepton spectra in C+C reactions at 1 and 2 GeV/nucleon and investigate up to what degree possible scenarios for the in-medium modification of vector mesons properties are accessible by the HADES experiment.

arXiv comment12 pages, 4 figures; submitted to Phys.Lett. B

References in corpus (32)

• First Measurement of the rho Spectral Function in High-Energy Nuclear Collisions
• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Kaon production in heavy ion reactions at intermediate energies
• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Chiral Restoration in Hot and/or Dense Matter
• Evidence for a Soft Nuclear Equation-of-State from Kaon Production in Heavy Ion Collisions
• First observation of in-medium modifications of the omega meson
• Dielectron Cross Section Measurements in Nucleus-Nucleus Reactions at 1.0 A GeV
• Dilepton Production at SPS Energies
• P-Wave Polarization of the $\rho$-Meson and the Dilepton Spectrum in Dense Matter
• Effects of in-medium vector meson masses on low-mass dileptons from SPS heavy-ion collisions
• Dilepton Spectra from Decays of Light Unflavored Mesons
• QCD Sum Rules, Scattering Length and the Vector Mesons in Nuclear Medium
• Intermediate mass excess of dilepton production in heavy ion collisions at BEVALAC energies
• Inclusive Dielectron Cross Sections in p+p and p+d Interactions at Beam Energies from 1.04 to 4.88 GeV
• Evaluation of QCD sum rules for light vector mesons at finite density and temperature
• Modifications of the Rho Meson from the Virtual Pion Cloud in Hot and Dense Matter
• Momentum Dependence of the Pion Cloud for Rho Mesons in Nuclear Matter
• Neutral Pions and Eta Mesons as Probes of the Hadronic Fireball in Nucleus-Nucleus Collisions around 1A GeV
• Dilepton production and $m_T$-scaling at BEVALAC/SIS energies
• Dilepton production in heavy ion collisions at intermediate energies
• Heavy Meson Production in Proton-Nucleus Reactions with Empirical Spectral Functions
• Electromagnetic transition form factors and dilepton decay rates of nucleon resonances
• Low-mass dileptons and dropping rho meson mass
• Dilepton/Photon Production in Heavy Ion Collisions and the QCD Phase Transition
• In-medium dependence and Coulomb effects of the pion production in heavy ion collisions
• Coupling of Baryon Resonances to the $N\omega$ channel
• QCD sum rule analysis for light vector and axial-vector mesons in vacuum and nuclear matter
• Off-shell omega production in proton-proton collisions near threshold
• New results from CERES
• Dilepton production in proton-proton collisions at BEVALAC energies
• rho, omega, phi-Nucleon Scattering Lengths from QCD Sum Rules

Cited by in corpus (12)

• Hadron properties in the nuclear medium
• Dielectron production in 12C+12C collisions at 2 AGeV with HADES
• Dilepton production and off-shell transport dynamics at SIS energies
• Study of dielectron production in C+C collisions at 1 AGeV
• Towards a model-independent constraint of the high-density dependence of the symmetry energy
• The impact of energy conservation in transport models on the ${\pi }^{-}/{\pi }^{+}$ multiplicity ratio in heavy-ion collisions and the symmetry energy
• Neutron-proton elliptic flow difference as a probe for the high density dependence of the symmetry energy
• Production and evolution path of dileptons at HADES energies
• Dilepton production in heavy-ion collisions with in-medium spectral functions of vector mesons
• Flow probe of symmetry energy in relativistic heavy-ion reactions
• Dilepton Radiation from Strongly Interacting Systems
• How Sensitive are Di-Leptons from Rho Mesons to the High Baryon Density Region?