Enhanced production of strange baryons in high-energy nuclear collisions from a multiphase transport model

被引：16
|
作者：
Shao, Tianhao [1 ,2 ,3 ]
Chen, Jinhui [1 ]
Ko, Che Ming [4 ,5 ]
Lin, Zi-Wei [6 ]
机构：
[1] Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA
[5] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA
[6] East Carolina Univ, Dept Phys, Greenville, NC 27858 USA
来源：
PHYSICAL REVIEW C | 2020年 / 102卷 / 01期
基金：
中国国家自然科学基金;
关键词：
P-PB COLLISIONS; MATTER; DEPENDENCE; MULTIPLICITY; PERSPECTIVE; PROTON;
D O I：
10.1103/PhysRevC.102.014906
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We introduce additional coalescence factors for the production of strange baryons in a multiphase transport (AMPT) model in order to describe the enhanced production of multistrange hadrons observed in Pb + Pb collisions at root s(NN) = 2 . 76 TeV at the Large Hadron Collider (LHC) and Au + Au collisions at root s(NN) = 200 GeV at Relativistic Heavy-Ion Collider (RHIC). This extended AMPT model is found to also give a reasonable description of the multiplicity dependence of the strangeness enhancement observed in high multiplicity events in pp collisions at root s = 7 TeV and p-Pb collisions at root s(NN) = 5.02 TeV. We find that the coalescence factors depend on the system size but not much on whether the system is produced from A + A or p + A collisions. The extended AMPT model thus provides a convenient way to model the mechanism underlying the observed strangeness enhancement in collisions of both small and large systems at RHIC and LHC energies.
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页数：6
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