• [1]

    Asner D M et al. Int. J. Mod. Phys. A, 2009, 24: S1[2] JIN S. (BES collaboration). Int. J. Mod. Phys. A, 2006, 21: 613[3] SHEN X Y. (BES collaboration). Nucl. Phys. Proc. Suppl., 2008, 185: 134[4] Harris F A. (BES collaboration). Int. J. Mod. Phys. A, 2009, 24: 377[5] LI H B, YANG M Z. Phys. Rev. Lett., 2006, 96: 192001; [arXiv:hep-ph/0511222][6] HUANG T, LU W, TAO Z J. Phys. Rev. D, 1997, 55: 1643[7] Tsai Y S. Phys. Rev. D, 1995, 51: 3172[8] Nakamura K et al. (Particle Data Group). J. Phys. G, 2010, 37: 075021