Transverse momentum versus multiplicity fluctuations in high-energy nuclear collisions

St. Mrowczynski, M. Rybczynski, Z. Wlodarczyk

Published 2004-07-05, updated 2004-09-15Version 2

We discuss recently measured event-by-event fluctuations of transverse momentum and of multiplicity in relativistic heavy-ion collisions. It is shown that the non-monotonic behavior of the p_T-fluctuations as a function of collision centrality can be fully explained by the observed non-monotonic multiplicity fluctuations. A possible mechanism responsible for the multiplicity fluctuations is also considered.