Higher order fluctuations and correlations of conserved charges from lattice QCD

Szabolcs Borsanyi, Zoltan Fodor, Jana N. Guenther, Sandor K. Katz, Attila Pasztor, Israel Portillo, Claudia Ratti, K. K. Szabó

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124 Scopus citations


We calculate several diagonal and non-diagonal fluctuations of conserved charges in a system of 2+1+1 quark flavors with physical masses, on a lattice with size 483 × 12. Higher order fluctuations at μB = 0 are obtained as derivatives of the lower order ones, simulated at imaginary chemical potential. From these correlations and fluctuations we construct ratios of net-baryon number cumulants as functions of temperature and chemical potential, which satisfy the experimental conditions of strangeness neutrality and proton/baryon ratio. Our results qualitatively explain the behavior of the measured cumulant ratios by the STAR collaboration.

Original languageEnglish (US)
Article number205
JournalJournal of High Energy Physics
Issue number10
StatePublished - Oct 1 2018

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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