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arXiv · hep-ph/9503328

Where does the Rho Go? Chirally Symmetric Vector Mesons in the Quark--Gluon Plasma.

Robert D. Pisarski
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Abstract

If the phase transition of $QCD$ at nonzero temperature is dominated by the (approximate) restoration of chiral symmetry, then the transition might be characterized using a gauged linear sigma model. Assuming that vector meson dominance holds, such sigma models predict that at the temperature of chiral restoration, the pole mass of the thermal $ρ$ meson is greater than that at zero temperature; in the chiral limit and in weak coupling this mass is $\sim 962 \, MeV$. The width of the thermal $ρ-a_1$ peak is estimated to be about $200 - 250 \, MeV$.

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Robert D. Pisarski. 1995-03-14. Where does the Rho Go? Chirally Symmetric Vector Mesons in the Quark--Gluon Plasma.. https://doi.org/10.1103/physrevd.52.r3773

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