Transverse momentum versus multiplicity fluctuations in high-energy nuclear collisions

Abstract

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.

Comments: 5 pages, 3 figures, revised & extended, to appear in Phys. Rev. C