Ponente
Dr.
Grzegorz Stefanek
(Jan Kochanowski University in Kielce)
Descripción
The exploration of the phase diagram of strongly interacting matter
particularly the search for a critical endpoint, is one of the most
challenging tasks in present heavy ion physics. The existence of
the critical point is expected to result in large event-by-event
fluctuations of many observables of produced particles, provided
the freeze-out occurs close to its location in the phase diagram.
The NA49 experiment studied event-by-event fluctuations of multiplicity, transverse momentum, azimuthal angle and charge of particles in the final state as well as intermittency in low-mass dipion and in proton production.
In this talk new NA61/Shine results on event-by-event fluctuations
of hadron multiplicities, the average transverse momentum and
chemical composition of the final state in p+p interactions
at the CERN SPS will be shown. The results will be compared with
the fluctuations measured in nucleus-nucleus collisions colected
by NA49 and predictions from string hadronic models.In particular,
the results and advantages of new strongly intensive measures
of fluctuations will be discussed.
Further on a first look by NA61/Shine at fluctuations in Be+Be
interactions will be presented. Finally the status and plans
of data taking in the NA61/Shine ion program will be summarized.
Autor primario
Dr.
Grzegorz Stefanek
(Jan Kochanowski University in Kielce)
