A model of transverse expansion of the quark-gluon fluid with phase transition and hadron spectra in heavy ion collisions

A simple model of transverse expansion of quark-gluon plasma with phase transition is suggested. The variation of parton matter fraction during the quark-hadron phase transition is determined and the lifetime of a mixed phase is estimated in the framework of this approach. The model is applied to derive the momentum spectra of produced hadrons for comparison with an existing experimental data. Possible probing the collective transverse flow by hadrons pT-distribution is discussed.