Transverse momentum versus multiplicity fluctuations in high-energy   nuclear collisions
  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. 
St. Mrowczynski, M. Rybczynski and Z. Wlodarczyk