Multiplicity Moments and Hard Processes in Relativistic Heavy Ion Collisions

Abstract

The normalized multiplicity moments and their relation with soft and hard processes in relativistic heavy ion collisions are analyzed in a general two-component model. It is found that, the strong fluctuations in binary collision number N_c in minimum-bias events can enhance the hard component, especially for the higher order moments. This enhancement can not be effectively described by modifying the participant number in the one-component model.

Comments: 6 pages, 5 figures