Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-03-10
Phys.Rev. C74 (2006) 024901
Physics
Nuclear Physics
Nuclear Theory
Accepted for publication by Physical Review C
Scientific paper
10.1103/PhysRevC.74.024901
We study charge fluctuations within the statistical hadronization model. Considering both the particle yield ratios and the charge fluctuations we show that it is possible to differentiate between chemical equilibrium and non-equilibrium freeze-out conditions. As an example of the procedure we show quantitatively how the relative yield ratio $\Lambda/K^-$ together with the normalized net charge fluctuation $v(Q)=\ave{\Delta Q^2}/\ave{\Nch}$ constrain the chemical conditions at freeze-out. We also discuss the influence of the limited detector acceptance on fluctuation measurements, and show how this can be accounted for within a quantitative analysis.
Jeon Sangyong
Rafelski Johann
Torrieri Giorgio
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