Speaker
Christoph Herold
(Suranaree University of Technology)
Description
Recent data from the beam-energy scan at RHIC has shown interesting behavior in the region of large baryon densities, where a significant increase in the net-proton kurtosis has been reported. We model the dynamical QCD phase transition in heavy-ion collisions using chiral fluid dynamics. This model is able to describe relevant nonequilibrium effects that other hydrodynamic models lack. We calculate particle multiplicities from a freeze-out over an energy hypersurface to determine the skewness and kurtosis as signs of non-Gaussian event-by-event fluctuations. Our results show good qualitative agreement with the experimental data. Special emphasis is put on the role of the equation of state, which is demonstrated to have crucial influence on the kurtosis for lower beam energies.
Author
Christoph Herold
(Suranaree University of Technology)
Co-authors
Chinorat Kobdaj
(Suranaree University of Technology (TH))
Yupeng Yan
(Suranaree University of Technology)
