Melting hadrons, boiling quarks and gluons


István Szanyi (Wigner FK)


We argue that two seemingly different phenomena, namely the well-known saturation of the Hagedorn exponential distribution and the less familiar saturation of Regge trajectories at resonance masses m ≈ 2.5 GeV are related and have the same origin: quark deconfinement. We show that the slope of the real part of non-linear Regge trajectories determines the prefactor in Hagedorn's resonance mass density distribution. While the Hagedorn distribution comes from statistics, Regge trajectories contain dynamics.

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