Speaker
Dr
Paolo Giuseppe Alba
(University of Turin)
Description
In recent years, the study of fluctuations of conserved charges has
received increasing attention: they turned out to be a promising tool to
study the deconfinement phase transition of QCD, the existence of a
critical point in the phase diagram and, more recently, the freeze-out
conditions in heavy-ion collisions (HICs).
Recent lattice QCD simulations and phenomenological models have found
first indications for a different transition-temperature for strange and
light quarks. The study of the higher order moments of the strange
particle
distributions measured in HICs would be very useful to clarify this issue.
Preliminary results on the moments of net-charged kaons have been
presented by the STAR collaboration, with experimental kinematic cuts but
still without corrections due to finite acceptance in the detectors.
Combinations of such moments are related to volume-independent ratios of
higher order cumulants, which can be calculated in the Hadron Resonance
Gas (HRG) model. I present results for higher order fluctuations of
strangeness in the HRG model, including different combinations of stable
strange hadrons, resonance feed-down corrections, kinematic cuts, thus
getting as close as possible to the future HIC strangeness fluctuation
measurements.
| On behalf of collaboration: | None |
|---|
Authors
Claudia Ratti
(University of Turin)
Dr
Marcus Bluhm
(North Carolina State University)
Dr
Paolo Giuseppe Alba
(University of Turin)
Rene Bellwied
(University of Houston (US))
Dr
Valentina Mantovani Sarti
(University of Turin)
Prof.
Wanda Alberico
(University of Turin)
