Rapidity dependence of hadron p_T spectra in central Au+Au collisions at s_(NN)～(1/2)=200 GeV  

作　　者：邵凤兰 宋军 谢去病 

机构地区：[1]Department of Physics,Qufu Normal University [2]Department of Physics,Shandong University

出　　处：《Chinese Physics C》2009年第6期481-486,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10775089,10475049);Science Fund of Qufu Normal University

摘　　要：The transverse momentum spectra for identified hadrons at different rapidities in central Au＋Au collisions at √^SNN= 200 GeV are studied in a quark combination model. The results for PT spectra of π^±, K^±, p（p^-） and for the p/π ratios in a broader PT range at midrapidity agree well with the data. The transverse momentum spectra of pions, protons and antiprotons at various rapidities y - 1, η= 2.2 and y ≈ 3.2 are calculated and compared with the data.The transverse momentum spectra for identified hadrons at different rapidities in central Au＋Au collisions at √^SNN= 200 GeV are studied in a quark combination model. The results for PT spectra of π^±, K^±, p（p^-） and for the p/π ratios in a broader PT range at midrapidity agree well with the data. The transverse momentum spectra of pions, protons and antiprotons at various rapidities y - 1, η= 2.2 and y ≈ 3.2 are calculated and compared with the data.

关 键 词：relativistic heavy ion collisions HADRONIZATION quark combination 

分 类 号：O572.2[理学—粒子物理与原子核物理]