Baryon number fluctuations and the phase structure in the PNJL model
| Autor: | Zhan-duo Tang, Guo-yun Shao, Xue-yan Gao, Wei-bo He |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics and Astronomy (miscellaneous)
High Energy Physics::Lattice Nuclear Theory Crossover Phase (waves) lcsh:Astrophysics Poisson distribution 01 natural sciences Deconfinement symbols.namesake lcsh:QB460-466 0103 physical sciences lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Statistical physics Nuclear Experiment 010306 general physics Engineering (miscellaneous) Quantum chromodynamics Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Skewness Kurtosis symbols lcsh:QC770-798 Baryon number |
| Zdroj: | European Physical Journal C: Particles and Fields, Vol 78, Iss 2, Pp 1-7 (2018) European Physical Journal C |
| ISSN: | 1434-6052 1434-6044 |
| DOI: | 10.1140/epjc/s10052-018-5636-0 |
| Popis: | We investigate the kurtosis and skewness of net-baryon number fluctuations in the Polyakov loop extended Nambu–Jona-Lasinio (PNJL) model, and discuss the relations between fluctuation distributions and the phase structure of quark-gluon matter. The calculation shows that the traces of chiral and deconfinement transitions can be effectively reflected by the kurtosis and skewness of net-baryon number fluctuations not only in the critical region but also in the crossover region. The contour plot of baryon number kurtosis derived in the PNJL model can qualitatively explain the behavior of net-proton number kurtosis in the STAR beam energy scan experiments. Moreover, the three-dimensional presentations of the kurtosis and skewness in this study are helpful to understand the relations between baryon number fluctuations and QCD phase structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink