Can hadrons survive the chiral phase transition ?

Details Can hadrons survive the chiral phase transition ? Can hadrons survive the chiral phase transition ?

1995-06-09

arxiv.org/abs/hep-ph/9506282v1

Phys.Lett. B356 (1995) 147-152

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, Latex with epsf macros, 2 uuencoded figures

Scientific paper

10.1016/0370-2693(95)00835-9

We study mesonic and baryonic correlation functions in the temporal directions in the vicinity of the critical temperature $T\simeq T_c$ using the instanton liquid model. In this model chiral symmetry restoration is driven by the formation of instanton-antiinstanton molecules. Although we find the signals for all hadronic poles to be drastically reduced, some hadronic states seem to survive the phase transition, as loosely bound $U(N_f)\times U(N_f)$ chiral multiplets in the plasma phase. These states are the $0^+ - 0^-$ mesons $(\pi,\sigma,\eta',\delta)$ and the $N(\frac{1}{2}^+) - N(\frac{1}{2}^-)$ baryons.

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