1. Higher order fluctuations and correlations of conserved charges from lattice QCD
- Author
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Szabolcs Borsanyi, Zoltan Fodor, Jana N. Guenther, Sandor K. Katz, Attila Pasztor, Israel Portillo, Claudia Ratti, and K. K. Szabó
- Subjects
Lattice QCD ,Phase Diagram of QCD ,Quark-Gluon Plasma ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
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 μ B = 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.
- Published
- 2018
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