XIII Polish Workshop on Relativistic Heavy-Ion Collisions

Centrality dependence of freeze-out temperature fluctuations in Pb-Pb collisions at the LHC

7 Jan 2018, 10:00

30m

60, ground floor - Room Jan Rzewuski (Institute of Theoretical Physics, University of Wroclaw)

Session 5

Speaker

Dariusz Prorok (Institute of Theoretical Physics University of Wroclaw)

Description

Many data in the High Energy Physics are, in fact, sample
means. It is shown that when this exact meaning of the
data is taken into account and the most weakly bound
states are removed from the hadron resonance gas, the
whole spectra of pions, kaons and protons measured at
midrapidity in Pb-Pb collisions at $\sqrt{s_{NN}} = 2.76$
TeV can be fitted simultaneously. The invariant
distributions are predicted with the help of the
single-freeze-out model in the chemical equilibrium
framework. The method is applied to the measurements
in centrality bins of Pb-Pb collisions and gives acceptable
fits for all but peripheral bins. The comparison with the
results obtained in the framework of the original
single-freeze-out model is also presented.

Presentation materials

XIII-Workshop-HIC_prorok.pdf