Energy and centrality dependence of light nuclei production in relativistic heavy-ion collisions  

作　　者：Li-Lin Zhu Bo Wang Meng Wang Hua Zheng 

机构地区：[1]Department of Physics,Sichuan University,Chengdu 610064,China [2]School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China

出　　处：《Nuclear Science and Techniques》2022年第4期62-71,共10页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.11905120 and 11947416).

摘　　要：We study the energy and centrality dependence of deuteron and triton(helium-3)production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider(RHIC)and CERN Large Hadron Collider(LHC)using the Tsallis distribution,blast-wave(BW)model,and stationary Fokker-Planck(FP)solution.Our study shows that good agreement can be reached between the fitting results from the stationary FP solution and the experimental data for Au+Au collisions from the beam energy scan(BES)program of RHIC at√SNN=7.7,11.5,14.5,19.6,27,39,62.4,and 200 GeV and for Pb+Pb collisions at√SNN=2.76 TeV.The Tsallis distribution and BW model can reasonably describe the deuteron and triton(helium-3)trans verse momentum spectra obtained at RHIC and LHC.A more comprehensive comparison among the three methods suggests that the stationary FP solution is a sensible method,which is able to describe the energy dependence of the light nuclei yield ratio N_(t)N_(p)/N_(d)^(2) and provide a coherent description of deuteron and triton(helium-3)production for all centralities and various colliding energies at RHIC and LHC.

关 键 词：Light nucleiproduction Heavy-ioncollisions Tsallis distribution Blast-wavemodel Fokker–Planck solution 

分 类 号：O571.6[理学—粒子物理与原子核物理]