• [1]

    M. Gell-Mann, Phys. Lett., 8: 214 (1964)

  • [2]

    S. K. Choi et al (Belle Collaboration), Phys. Rev. Lett., 91: 262001 (2003)

  • [3]

    D. Acosta et al (CDF Collaboration), Phys. Rev. Lett., 93: 072001 (2004)

  • [4]

    V. M. Abazov et al (D0 Collaboration), Phys. Rev. Lett., 93: 162002 (2004)

  • [5]

    B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 71: 071103 (2005)

  • [6]

    T. F. Carames and A. Valcarce, Phys. Rev. Lett., 103: 222001 (2009)

  • [7]

    T. F. Carames and A. Valcarce, Phys. Rev. D, 82: 054032 (2010)

  • [8]

    B. Aubert et al (BaBar Collaboration), Phys. Rev. Lett., 95: 142001 (2005)

  • [9]

    Q. He et al (CLEO Collaboration), Phys. Rev. D, 74: 091104(R) (2006)

  • [10]

    K. Abe et al (Belle Collaboration), arXiv: 0612006[hep-ex]; C. Z. Yuan et al (Belle Collaboration), Phys. Rev. Lett., 99: 182004(2007)

  • [11]

    T. E. Coan et al (CLEO Collaboration), Phys. Rev. Lett., 96: 162003 (2006)

  • [12]

    X. L. Wang et al (Belle Collaboration), Phys. Rev. Lett., 99: 142002 (2007)

  • [13]

    J. P. Lees et al (BaBar Collaboration), Phys. Rev. D, 86: 051102 (2012)

  • [14]

    Z. Q. Liu et al (Belle Collaboration), Phys. Rev. Lett., 110: 252002 (2013)

  • [15]

    L. Ma, Z. F. Sun, X. H. Liu, W. Z. Deng, X. Liu and S. L. Zhu, Phys. Rev. D, 90: 034020 (2014)

  • [16]

    K. T. Chao, Z. G. He, D. Li and C. Meng, arXiv:1310:8597

  • [17]

    C. F. Qiao, R. L. Zhu, Phys. Rev. D, 89: 074006 (2014)

  • [18]

    Q. Wang, X. H. Liu and Q. Zhao, Phys. Rev. D, 84: 014007(R) (2012)

  • [19]

    S. K. Choi et al (Belle Collaboration), Phys. Rev. Lett., 100: 142001 (2008)

  • [20]

    B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 79: 112001 (2009)

  • [21]

    R. Aaij et al (LHCb Collaboration), Phys. Rev. Lett., 112: 222002 (2014)

  • [22]

    K. Chilikin et al (Belle Collaboration), Phys. Rev. D, 88: 074026 (2013)

  • [23]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 110: 252001 (2013)

  • [24]

    T. Xiao, S. Dobbs, A. Tomaradze and K. K. Seth, Phys. Lett. B, 727: 366 (2013)

  • [25]

    L. Maiani, V. Riquer, R. Faccini, F.Piccinini, A. Pilloni, and A.D. Polosa, Phys. Rev. D, 87: 111102(R) (2013)

  • [26]

    D. Y. Chen, X. Liu, and T. Matsuki, Phys. Rev. Lett., 110: 232001 (2013)

  • [27]

    M. B. Voloshin, Phys. Rev. D, 87: 091501 (2013); N. Mahajan, arXiv:1304.1301

  • [28]

    E. Braaten, Phys. Rev. Lett., 111: 162003 (2013)

  • [29]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 112: 022001 (2014)

  • [30]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 111: 242001 (2013)

  • [31]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 112: 132001 (2014)

  • [32]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 113: 212002 (2014)

  • [33]

    T. K. Pedlar et al (CLEO Collaboration), Phys. Rev. Lett., 107: 041803 (2011)

  • [34]

    M. Ablikim et al (BESIII Collaboration), Nucl. Instrum. Methods Phys. Res. Sect. A, 614: 345 (2010)

  • [35]

    J. Mandel, The Statistical Analysis of Experimental Data, Dover Publications (1964)

  • [36]

    C. Z. Yuan, Chinese Physics C, 38(4): 043001 (2014)

  • [37]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 114: 092003 (2015)

  • [38]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. D, 91: 112005 (2015)

  • [39]

    R. Faccini, G. Filaci, A. L. Guerrieri, A. Pilloni and A. D. Polosa, Phys. Rev. D, 91: 117501 (2015)

  • [40]

    T. Barnes, F. E. Close, E. S. Swanson, Phys. Rev. D, 52: 5242 (1995)

  • [41]

    A. Bondar et al (Belle Collaboration), Phys. Rev. Lett., 108: 122001 (2012)

  • [42]

    P. del Amo Sanchez et al (Belle Collaboration), Phys. Rev. D, 83: 032004 (2011)

  • [43]

    Frank E. Close, Philip R. Page, Phys. Rev. D, 52: 1706 (1995)

  • [44]

    N. Isgur and J. Paton, Phys. Rev. D, 31: 2910 (1985)

  • [45]

    F. E. Close and P. Page, Nucl. Phys. B, 443: 233 (1995)

  • [46]

    M. Ablikim et al (BESIII Collaboration), arXiv:1506.06018

  • [47]

    M. Ablikim et al (BESIII Collaboration), arXiv:1507.02404

  • [48]

    M. Ablikim et al (BESIII Collaboration), Phys. Rev. Lett., 112: 092001 (2014)