Phase Space and Dynamical Fluctuations of Kaon--to--Pion Ratios

Details Phase Space and Dynamical Fluctuations of Kaon--to--Pion Ratios Phase Space and Dynamical Fluctuations of Kaon--to--Pion Ratios

2010-07-23

arxiv.org/abs/1007.4074v1

Prog.Theor.Phys.126:279-292,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages (revtex4), 2 eps figure

Scientific paper

10.1143/PTP.126.279

The dynamical fluctuations of kaon--to--pion ratios have been studied over a wide range of center--of--mass energies $\sqrt{s}$. Based on changing phase space volume which apparently is the consequence of phase transition from hadrons to quark--gluon plasma at large $\sqrt{s}$, single--particle distribution function $f$ is assumed to be rather modified. Varying $f$ and phase space volume are implemented in the grand--canonical partition function, especially at large $\sqrt{s}$, so that hadron resonance gas model, when taking into account the experimental acceptance and quark phase space occupation factor, turns to be able to reproduce the dynamical fluctuations over the entire range of $\sqrt{s}$.

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