https://doi.org/10.1140/epja/i2015-15147-3
Regular Article - Theoretical Physics
Charge balance functions in a scenario of continuing charge production in quark matter
1
Department of Physics, Harbin Institute of Technology, 150006, Heilongjiang, China
2
School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024, Liaoning, China
* e-mail: panyh@hit.edu.cn
Received:
19
October
2015
Accepted:
29
October
2015
Published online:
19
November
2015
We study the charge balance functions of 
and 
in a scenario of continuing charge creation in a strongly interacting quark-gluon plasma (QGP) in high-energy heavy-ion collisions, using relativistic hydrodynamics and the lattice QCD results of quark susceptibilities and the equation of state of the QGP. We find that the charge balance functions are dominated by their QGP components because most charges are produced before the hadronic stage. The hadronic component of the balance function of is small but non-negligible. The balance function of 
has a negative hadronic component because the strangeness decreases during the system evolution. The correlation between light and strange quarks leads to small enhancements of the balance functions at small rapidity difference.
© SIF, Springer-Verlag Berlin Heidelberg, 2015
