[Xiao, Le; Zhou, Shi-Qiang; Wang, Dong; Sun, Xiang-Ming; Guo, Di; Huang, Guang-Ming; Zhou, Zhuo; You, Bi-Hui; Yang, Ping; Gao, Chao-Song; Ren, Wei-Ping; Wang, Min; Liu, Jun] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.
[Zhou, Wei; Zhao, Cheng-Xin] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
[Zhao, Cheng-Xin] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China.