Production of High-pT Kaon and Pion in pp and Au-Au Collisions by Resolved Photoproduction Processes

Taking into account the effects of shadowing and jet quenching, the large transverse momentum distribution of K＋, π＋ and K＋/π＋ ratios at s = 200 GeV originating from resolved photoproduction processes is calculated based on perturbative quantum chromodynamics. It is found that the contribution of K＋...

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Published in中国物理快报：英文版 no. 8; pp. 44 - 47
Main Author 蔡燕兵 杨海涛 李云德
Format Journal Article
LanguageEnglish
Published 2015
Subjects
π介子
光生过程
动力学计算
动量分布
生产工艺
碰撞
金
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Summary:Taking into account the effects of shadowing and jet quenching, the large transverse momentum distribution of K＋, π＋ and K＋/π＋ ratios at s = 200 GeV originating from resolved photoproduction processes is calculated based on perturbative quantum chromodynamics. It is found that the contribution of K＋ and π＋ produced by photoproduction processes is evident. The K＋ /π＋ ratios in Au-Au collisions show an obvious enhancement compared with p p collisions. The numerical results indicate that the photoproduetion processes are good modification for kaon and pion production.
Bibliography:CAI Yan-Bing, YANG Hai-Tao, LI Yun-De（ 1Department of Physics, Yunnan University, Kunming 650091 2School of Physics and Electronic Information Engineering, Zhaotong University, Zhaotong 657000 ）
Taking into account the effects of shadowing and jet quenching, the large transverse momentum distribution of K＋, π＋ and K＋/π＋ ratios at s = 200 GeV originating from resolved photoproduction processes is calculated based on perturbative quantum chromodynamics. It is found that the contribution of K＋ and π＋ produced by photoproduction processes is evident. The K＋ /π＋ ratios in Au-Au collisions show an obvious enhancement compared with p p collisions. The numerical results indicate that the photoproduetion processes are good modification for kaon and pion production.
11-1959/O4
ISSN:0256-307X
1741-3540