Strangeness production in pA and AA collisions at 158 A GeV

作     者：王晓荣 萨本豪 周代翠 刘涵 蔡勖 

作者机构：Institute of Particle Physics Hua-Zhong Normal University Wuhan 430079 China China Institute of Atomic Energy Beijing 102413 China CCAST (World Lab.) Beijing 100080 China Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China PPE Division CERN Geneva 23 CH-1211 Switzerland 

出 版 物：《Science China Mathematics》 (中国科学：数学（英文版）)

年 卷 期：2000年第43卷第6期

页      面：623-628页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0701[理学-数学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(19575071,19875019) Nuclear Industry Foundation and Natural Science Foundation of Hubei Province 

主　　题：relativistic heavy-ion collision strangeness production LUCIAE model. 

摘      要：LUCIAE, a hadronic and string cascade model and its corresponding event generator are used to analyse strangeness production singly and multiply in p-Pb and Pb-Pb collisions at 158 A GeV. Spectra of multiplicity and transverse mass for single $(\Lambda ,\overline \Lambda )$ and multiple $(\Xi ^ - ,\overline {\Xi ^ - } ,\Omega ^ - ,\overline {\Omega ^ - } )$ strangeness are given. In LUCIAE model it suggests a physical mechanism, i.e. the dependence of the strange quark suppression factor on incident energy, projectile mass and centrality of colliding system might result in increase of yield of strange particles with increasing the above three parameters. Calculations from the model reconstruct well the WA97 experimental data: increase of yield of strange particles with increasing centrality and increase of strangeness enhancement with increasing number of strange quarks, in relativistic nucleus-nucleus collisions.