Prompt photon production in proton–nucleus collisions at LHC:a comparison among color dipole models
作者机构：Physics DepartmentArmy Academy of Armored ForcesPLABeijing 100072China Department of Mathematics and PhysicsShijiazhuang Tiedao UniversityShijiazhuang 050043China Hebei Key Laboratory of Physics and Energy TechnologyNorth China Electric Power UniversityBaoding 071000China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China
出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)
年 卷 期：2023年第75卷第12期
页 面：75-83页
核心收录：
学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程]
基 金：Supported by the National Natural Science Foundation of China(Grant No.U1832120) the Natural Science Foundation for Outstanding Young Scholars of Hebei Province(Grant No.A2020210012) the S&T Program of Hebei(Grant No.236Z4601G) the Scientific Research Foundation for the Introducing Returned Overseas Chinese Scholars of Hebei Province(Grant No.C20230360)
主 题：color dipole formalism Glauber-Gribov approach small-r limit
摘 要：The nuclear modification factor for prompt photon production in proton-nucleus collisions is investigated within color dipole *** means of the Glauber-Gribov approach,the nuclear effects are studied in various rapidity bins with the evolution equation-based saturation models and the phenomenological dipole *** theoretical results are compared with the experimental data provided by PHENIX,ATLAS and CMS *** forward rapidity and midrapidity,a reasonable agreement with the experimental data is shown for the theoretical results with the modified Kharzeev,Levin and Nardi model,and the Kowalski and Teaney ***,we analyze the influence of the initial state energy loss effect on the nuclear modification factor and find that it is obvious only at backward rapidity together with small ***,the theoretical results are also compared with those of JETPHOX Monte Carlo program and the predictive results for the LHCb at very forward rapidities are presented.
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