- 
								[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)