Higher order fluctuations of conserved charges in heavy ion collisions

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Sakaida, Miki^1 ; Asakawa, Masayuki^1 ; Kitazawa, Masakiyo^1

Department of Physics, Osaka University, Toyonaka, Osaka

560-0043, Japan^1

关键词: Charge conservation;    Charge fluctuations;    Cumulants;    Diffusion distance;    Heavy ion collision;    Higher-order;    Relativistic heavy ion collision;    Time evolutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012046/pdf
DOI  :  10.1088/1742-6596/612/1/012046

来源: IOP

【 摘 要 】

We investigate the effect of the global charge conservation on the cumulants of conserved charges in relativistic heavy ion collisions in a finite rapidity window by studying the time evolution of cumulants in the hadronic medium. It is argued that the global charge conservation does not affect the experimental result of the net-electric charge fluctuation observed by ALICE, because of the finite diffusion distance of charged particles in the hadronic stage.