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arXiv · hep-ph/0509106

The Problem of Mass: Mesonic Bound States Above Tc

H. -J. Park·C. -H. Lee·G. E. Brown·M. Rho
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Abstract

By extending the Bielefeld LGS (Lattice Gauge Simulation) color singlet interaction, we find that the masses of pi, sigma, rho and a_1 excitations, 32 degrees of freedom in all, go to zero (in the chiral limit) as T -> T_c. This result indicates a smooth phase transition at T_c, at which from above the masses and couplings of mesons vanish `a la Brown-Rho scaling. We discuss that our scenario successfully explains the STAR (STAR Collaboration) rho^0/pi^- ratio in Au-Au peripheral collisions at RHIC.

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H. -J. Park, C. -H. Lee, G. E. Brown, M. Rho. 2005-09-12. The Problem of Mass: Mesonic Bound States Above Tc. https://doi.org/10.1016/j.nuclphysa.2006.06.159

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