  The presence of memory effects and color long-range forces among the
many-parton system in the early stage of heavy-ion collisions can affect the
particle statistical behavior at the freeze-out temperature. In this context,
we calculate, in the framework of the equilibrium generalized non-extensive
thermostatistics, the shape of pion transverse mass spectrum and the value of
the transverse momentum correlation function of the pions emitted during the
central Pb+Pb collisions and we show that the experimental results is well
reproduced assuming very small deviations from the standard statistics.
