Inclusive γ(1S,2S,3S) photoproduction at the CEPC  

作　　者：Xi-Jie Zhan Jian-Xiong Wang 展希杰;王建雄(Institute of High Energy Physics(IHEP),Chinese Academy of Sciences(CAS),19B Yuquan Road,Shijingshan District,Beijing,100049,China;University of Chinese Academy of Sciences(UCAS),Chinese Academy of Sciences(CAS),19A Yuquanlu Road,Shijingshan District,Beijing,100049,China)

机构地区：[1]Institute of High Energy Physics(IHEP),Chinese Academy of Sciences(CAS),19B Yuquan Road,Shijingshan District,Beijing,100049,China [2]University of Chinese Academy of Sciences(UCAS),Chinese Academy of Sciences(CAS),19A Yuquanlu Road,Shijingshan District,Beijing,100049,China

出　　处：《Chinese Physics C》2021年第2期240-245,共6页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11975242)and the Key Research Program of Frontier Sciences,CAS,(Y7292610K1)。

摘　　要：Inclusive γ(1S,2S,3S) photoproduction at the future Circular-Electron-Positron-Collider(CEPC)is studied,using the non-relativistic quantum chromodynamics(NRQCD)factorization formalism.Including the contributions from both direct and resolved photons,we present different distributions for the γ(1S,2S,3S) production.Our results suggest that there will be considerable events,implying that well measurements of the T photoproduction can be performed to further study heavy quarkonium physics at electron-positron colliders,in addition to hadron colliders.This supplemental study is very important for clarifying the current situation regarding the heavy quarkonium production mechanism.

关 键 词：NRQCD heavy quarkonium PHOTOPRODUCTION e^+e^-collider 

分 类 号：O572.214[理学—粒子物理与原子核物理]