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

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

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
Volume2018
Issue number10
DOIs
StatePublished - Oct 1 2018

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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