[Wang, W. L.; Liu, F.] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Zhang, Z. Y.; Wang, W. L.] Inst High Energy Phys, Beijing 100049, Peoples R China.
[Huang, F.] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA.
[Zhang, Z. Y.] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China.
[Liu, F.] Huazhong Normal Univ, Minist Educ, Key Lab Quark & Lepton Phys, Wuhan 430079, Peoples R China.