https://doi.org/10.1140/epja/i2016-16046-9
Regular Article - Theoretical Physics
Rapidity bin multiplicity correlations from a multi-phase transport model
1
School of Mathematics and Physics, China University of Geoscience, 430074, Wuhan, China
2
Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, 430079, Wuhan, China
3
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China
* e-mail: wangmj@cug.edu.cn
Received:
22
October
2015
Revised:
20
January
2016
Accepted:
27
January
2016
Published online:
11
March
2016
The central-arbitrary bin and forward-backward bin multiplicity correlation patterns for Au+Au collisions at GeV are investigated within a multi-phase transport (AMPT) model. An interesting observation is that for
GeV Au+Au collisions, these two correlation patterns both have an increase with the pseudorapidity gap, while for
GeV Au+Au collisions, they decrease. We mainly discuss the influence of different evolution stages of collision system on the central-arbitrary bin correlations, such as the initial conditions, partonic scatterings, hadronization scheme and hadronic scatterings. Our results show that the central-arbitrary bin multiplicity correlations have different responses to partonic phase and hadronic phase, which can be suggested as a good probe to explore the dynamical evolution mechanism of the hot dense matter in high-energy heavy-ion collisions.
© SIF, Springer-Verlag Berlin Heidelberg, 2016