Rayleigh-like distribution of particle transverse momenta in collisions at high energies  

作　　者：邵贵成 李惠玲 

机构地区：[1]Department of Physics,Xinzhou Normal University [2]Department of Physics,Shanxi Normal University

出　　处：《Chinese Physics C》2010年第7期964-971,共8页中国物理C（英文版）

基　　金：Supported by NSFC (10675077,10975095);Natural Science Foundation of Shanxi Province (2007011005)

摘　　要：The transverse momentum distributions of final-state particles produced in collisions at high en-ergies are studied by using a two-component Rayleigh-like distribution.This representation is based on Liu＇s multisource ideal gas model which describes protons and fragments in high energy nucleus-nucleus collisions.The calculated results are in good agreement with the experimental data of Au-Au,Cu-Cu,d-Au,and pp collisions at the relativistic heavy ion collider energies.The experimental particle momentum distributions of p-Be collisions at 6.4,12.3,and 17.5 GeV/c,as well as Au-Au collisions at 1.5 AGeV are well described by a model based on a single Rayleigh-like distribution of particle transverse momenta.The transverse momentum distributions of final-state particles produced in collisions at high en-ergies are studied by using a two-component Rayleigh-like distribution.This representation is based on Liu＇s multisource ideal gas model which describes protons and fragments in high energy nucleus-nucleus collisions.The calculated results are in good agreement with the experimental data of Au-Au,Cu-Cu,d-Au,and pp collisions at the relativistic heavy ion collider energies.The experimental particle momentum distributions of p-Be collisions at 6.4,12.3,and 17.5 GeV/c,as well as Au-Au collisions at 1.5 AGeV are well described by a model based on a single Rayleigh-like distribution of particle transverse momenta.

关 键 词：transverse momentum distribution Rayleigh-like distribution high energy collisions 

分 类 号：O571[理学—粒子物理与原子核物理]