Centrality dependence and isospin effect on $\Wpm$ and $\Zn$ productions in nucleus-nucleus collisions at $\sNN=5.02$~TeV
- Resource Type
- Working Paper
- Authors
- Zhou, Dai-Mei; Yan, Yu-Liang; Zheng, Liang; Zhao, Ming-Rui; Li, Xiao-Mei; Zhang, Xiao-Ming; Chen, Gang; Lei, An-Ke; Zhu, Ya-Qian; Cai, Xu; Sa, Ben-Hao
- Source
- Subject
- High Energy Physics - Phenomenology
- Language
In this paper, the centrality dependent $\Zn$ and $\Wpm$ production and the isospin effect in $\Wpm$ production are investigated with a parton and hadron cascade model PACIAE in Pb--Pb collisions at $\sNN=5.02$~TeV. ALICE data of $\Zn$ production in Pb--Pb collisions at $\sNN=5.02$~TeV are found to be reproduced fairly well. The prediction on $\Wpm$ production in the same collision system is given as well. An interesting isospin effect is observed in exploring the charge asymmetry between $\Wp$ and $\Wm$ as a function of the asymmetry between number of valence $u$- and $d$-quarks varied from small to large collision systems at center-of-mass energy 5.02 TeV. The results serve as a important benchmarks for understanding the initial conditions of heavy-ion collisions.
Comment: arXiv admin note: text overlap with arXiv:2002.00344