Medium Modifications of Vector Mesons and NA60
arXiv:hep-ph/0604269
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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