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Curvature of the freeze-out line in heavy ion collisions

Bazavov, A. ; Ding, H.-T. ; Hegde, P. ; Kaczmarek, O. ; Karsch, F. ; Laermann, E. ; Mukherjee, Swagato ; Ohno, H. ; Petreczky, P. ; Schmidt, C. ; Sharma, S. ; Soeldner, W. ; Wagner, M.



Abstract

We calculate the mean and variance of net-baryon number and net-electric charge distributions from quantum chromodynamics (QCD) using a next-to-leading order Taylor expansion in terms of temperature and chemical potentials. We compare these expansions with experimental data from STAR and PHENIX, determine the freeze-out temperature in the limit of vanishing baryon chemical potential, and, for the ...

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