Fluctuations of conserved charges on the lattice and in heavy ion collisions

30th Winter Workshop on Nuclear Dynamics

Borsanyi, S.^1 ; Fodor, Z.^1,2,3 ; Katz, S.D.^2,4 ; Krieg, S.^1,3 ; Ratti, C.^5,6 ; Szabo, K.K.^1,3

Department of Physics, Wuppertal University, Gaussstr. 20, Wuppertal

D-42119, Germany^1

Inst. for Theoretical Physics, Eötvös University, Pázmány P. sétány 1/A, Budapest

H-1117, Hungary^2

Jülich Supercomputing Centre, Forschungszentrum Jülich, Jülich

D-52425, Germany^3

MTA-ELTE Lendület Lattice Gauge Theory Research Group, Pázmány P. sétány 1/A, Budapest

H-1117, Hungary^4

Dip. di Fisica, Università di Torino, Sezione di Torino, via Giuria 1, Torino

I-10125, Italy^5

Department of Physics, University of Houston, Houston

TX

77204, United States^6

关键词: Baryon number;    Dynamical quarks;    Freeze out;    Freeze out temperature;    Heavy ion collision;    Multiplicity distributions;    Quark mass;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/535/1/012030/pdf
DOI  :  10.1088/1742-6596/535/1/012030

来源: IOP

【 摘 要 】

We present our latest results for fluctuations of electric charge and baryon number, simulated on the lattice in a system of 2+1 dynamical quark flavors at the physical quark masses and continuum extrapolated. In order to extract the chemical freeze-out temperature and chemical potential, we compare our results to the moments of multiplicity distribution of the corresponding conserved charges, measured in heavy ion collision experiments by the STAR collaboration. Consistency between the freeze-out parameters obtained through different conserved charges is discussed.