Medium Modifications of Vector Mesons and NA60

Abstract

We confront different models for medium modifications of the electromagnetic correlation function to recent dimuon spectra from the NA60 collaboration for central In-In collisions at the CERN-SPS. In the low-mass region (M \lesssim 1.0 GeV), we evaluate medium modifications of the spectral properties of ρ-, ω- and ϕ-mesons. In the intermediate-mass region (M>1.0 GeV), we employ schematic models for the mixing of vector and axialvector current correlators, which provide a mechanism for chiral-symmetry restoration.

8 pages, 6 figures, contribution to the proceedings of the 22nd Winter Workshop on Nuclear Dynamics

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• Thermal Dilepton Production from Dropping rho based on the Vector Manifestation
• Dileptons and Medium Effects in Heavy-Ion Collisions
• Di-muon measurements in CBM experiment at FAIR
• A Hidden Local Field Theory Description of Dileptons in Relativistic Heavy Ion Collisions
• Vector-axialvector mixing in hot matter and its hadronic effective field theory description
• Thermal Dilepton Production Rate from Dropping rho in the Vector Manifestation