Evaporation of mesons from quark-gluon plasma by fission of chromoelectric flux tubes

The hadronization at the surface of a quark-gluon plasma has been studied in the framework of a chromoelectric flux tube model. The authors find that the radiation pressure is sufficiently small compared to the internal pressure that it can be ignored to first approximation in the hydrodynamical expansion of the plasma. Thus, this solution for meson radiation can be folded with a solution to the hydrodynamical expansion to obtain the spectrum of radiated mesons emitted over the history of the expansion. Of special interest is the distinction between strange and non-strange mesons, which is explicit in the theory through the dependences on the quark masses and the thermal populations in the plasma