Calculations of differential momentum transfer spectra for J/ψphotoproduction in heavy-ion collisions  

作　　者：Pengfei Wang Xin Wu Wangmei Zha Zebo Tang 王鹏飞;吴鑫;查王妹;唐泽波(State Key Laboratory of Partiele Deleetion and Eleetronics University of Seienee and Technology of China Hefei 230026,China;Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]State Key Laboratory of Partiele Deleetion and Eleetronics University of Seienee and Technology of China Hefei 230026,China [2]Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Physics C》2022年第7期112-117,共6页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (12005220, 12175223);MOST (2018YFE0104900)

摘　　要：Understanding the gluonic structure in nuclei is one of the most important goals in modern nuclear physics,for which J/ψphotoproduction is suggested as a powerful tool to probe the gluon density distribution.The experimental investigation of the photoproduction process is conventionally studied in ultra-peripheral heavy-ion collisions,and has recently been extended to hadronic collisions.However,theoretical efforts in hadronic heavy-ion collisions are still lacking in the literature.In this paper,we build up a phenomenological framework to calculate the differential momentum transfer spectra for J/ψphotoproduction in hadronic heavy-ion collisions based on a vector meson dominance model.For the first time,we include the effect of internal photon radiation in the calculations,and we find that the results with internal photon radiation could describe the experimental measurements from STAR very well.

关 键 词：PHOTOPRODUCTION J/Ψ heavy-ion collision INTERNAL photon radiation 

分 类 号：O571.6[理学—粒子物理与原子核物理]