Speaker
Marek Gazdzicki
(Goethe-University Frankfurt am Main and Jan Kochanowski University Kielce)
Description
Recent results on fluctuations and correlations in p+p, Be+Be and Ar+Sc collisions at the CERN SPS
energies will be reviewed. In particular, results on multiplicity fluctuations will be presented and
discussed. The scaled variance of multiplicity distribution decreases rapidly when going from Be+Be
to Ar+Sc collisions. At the same time the ratio of mean multiplicity of positively charged kaons and
pions shows a significant increase. The two observations will be interpreted as the first evidence of
the percolation threshold in high energy nucleus-nucleus collisions.
Author
Marek Gazdzicki
(Goethe-University Frankfurt am Main and Jan Kochanowski University Kielce)
