Freeze-Out Conditions in Heavy Ion Collisions from QCD Thermodynamics

Bazavov, A. ; Ding, H.-T.

; Hegde, P. ; Kaczmarek, O. ; Karsch, F. ; Laermann, E. ; Mukherjee, Swagato

; Petreczky, P. ; Schmidt, C.

; Smith, D.

; Soeldner, W. ; Wagner, M.

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Zusammenfassung

We present a determination of freeze-out conditions in heavy ion collisions based on ratios of cumulants of net electric charge fluctuations. These ratios can reliably be calculated in lattice QCD for a wide range of chemical potential values by using a next-to-leading order Taylor series expansion around the limit of vanishing baryon, electric charge and strangeness chemical potentials. From a ...