Sang, WL (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属:
[Sang, Wen-Long] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Sang, Wen-Long] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China; [Gao, Ying-Jia; Chen, Yu-Qi] Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
英文摘要:
In this paper, we propose a new approach to probe the quarkonium at the BES-III and the B factories. In the two-photon process, e(+)e(-) -> e(+)e(-) + hadron, the signals of the emitted hadron can be reconstructed through investigating the final leptons e(+)e(-). Furthermore, by analyzing the distribution of the relative angle between the final e(+) and e(-), we can determine the quantum number of the final hadron. For those hadrons that are hard to detect directly, this may provide an effective way. We calculate the cross sections as well as the distributions of the eta(c)(1S, 2S) and chi(cJ)(1P, 2P) production at tree level and the next-to-leading order QCD radiative corrections. In addition, the cross sections of bottomonium production are considered at tree level. Unfortunately, they are too tiny to be detected.
