[Pang, Longgang; Wang, Xin-Nian] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Wang, Qun; Pang, Longgang] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Peoples R China.
[Wang, Xin-Nian] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
[Wang, Xin-Nian] Cent China Normal Univ, Key Lab Quarks & Lepton Phys, Wuhan 430079, Peoples R China.
[Wang, Qun; Pang, Longgang] Univ Sci & Technol China, Dept Modern Phys, Anhua 230026, Peoples R China.