Photoproduction of J/ψ in non-single-diffractive p+p collisions

• 作 者: 曹泽华 阮丽娟 唐泽波 许长补 杨驰 杨帅 查王妹
• 机 构: StateKeyLaboratoryofParticleDetectionandElectronics,DepartmentofModemPhysics,BrookhavenNationalLabor
• 出 处: 中国物理C:英文版
• 发表日期: 2019年6期
• 关键词: PHOTOPRODUCTION jpsi RHIC LHC
• 基金项目: the National Natural Science Foundation of China (11775213,11505180, 11675168),the U.S. DOE Office of Science (DE-SC0012704) and MOST (2016YFE0104800).

Significant enhancements of J/ψ production at very low transverse momenta were recently observed by the ALICE and STAR collaborations in peripheral hadronic A+A collisions. The anomalous excess points to coherent photon-nucleus interactions in violent had