Speaker
Description
First six cumulants of proton number are calculated in the statistical resonance gas model with chemical potentials for every stable identified hadron species. The chemical potentials are chosen in such a way that the average particle numbers after decay of resonances are kept constant independently of temperature and equal to the values given at the chemical freeze-out. This corresponds to a fireball with hadron abundances set at the chemical freeze-out, which further cools down to the thermal freeze-out. It is shown that also the volume-independent ratios of cumulants stay nearly constant in such a scenario. This is useful information, because it shows that the observed non-critical values of volume independent cumulant ratios, which could be modified at any time during the fireball evolution, are not too much influenced after chemical freeze-out.
