- 
								[1]
								H. D. Politzer, Phys. Rev. Lett., 30: 1346 (1973); ibid, Phys. Rep., 14: 129 (1974); D. J. Gross and F. Wilczek, Phys. Rev. Lett., 30: 1343 (1973); ibid, Phys. Rev. D, 8: 3633 (1973) 
- 
								[2]
								Cong-Feng Qiao and Ling Tang, Phys. Rev. Lett., 113: 221601 (2014); Liang Tang and Cong-Feng Qiao, Nucl. Phys. B, 904: 282 (2016) 
- 
								[3]
								W. Lee and D. Weingarten, Phys. Rev. D, 61: 014015 (1999) 
- 
								[4]
								G. S. Bali et al., Phys. Lett. B, 309: 378 (1993) 
- 
								[5]
								C. J. Morningstar and M. J. Peardon, Phys. Rev. D, 56: 4043 (1997) 
- 
								[6]
								Y. Chen et al., Phys. Rev. D, 73: 014516 (2006) 
- 
								[7]
								M. Acciarri et al., Phys. Lett. B, 501: 173 (2001) 
- 
								[8]
								R. Barate et al., Phys. Lett. B, 472: 189 (2000) 
- 
								[9]
								A. Abele et al., Phys. Lett. B, 385: 425 (1996) 
- 
								[10]
								A. Abele et al., Phys. Rev. D, 57: 3860 (1998) 
- 
								[11]
								D. Barberis et al., Phys. Lett. B, 462: 462 (1999) 
- 
								[12]
								S. Janowski, F. Giacosa, and D. H. Rischke, Phys. Rev. D, 90(11): 114005 (2014) 
- 
								[13]
								C. Amsler and F. E. Close, Phys. Lett. B, 353: 385 (1995); F. E. Close and A. Kirk, Phys. Lett. B, 483: 345 (2000) 
- 
								[14]
								F. E. Close and Q. Zhao, Phys. Rev. D, 71: 094022 (2005) 
- 
								[15]
								X. G. He, X. Q. Li, X. Liu et al., Phys. Rev. D, 73: 114026 (2006) 
- 
								[16]
								X. H. Yuan, L. Tang, M. Z. Yang et al., arXiv: 1104.2118 
- 
								[17]
								V. Crede and C.A. Meyer, Prog. Part. Nucl. Phys., 63: 74-116 (2009) 
- 
								[18]
								J. F. Donoghue, K. Johnson, and B. A. Li, Phys. Lett. B, 99: 416 (1981) 
- 
								[19]
								M. S. Chanowitz, Phys. Rev. Lett., 46: 981 (1981) 
- 
								[20]
								K. Ishikawa, Phys. Rev. Lett., 46: 978 (1981) 
- 
								[21]
								R. Lacaze and H. Navelet, Nucl. Phys. B, 186: 247 (1981) 
- 
								[22]
								A. Masoni, C. Cicalo, and G. L. Usai, J. Phys. G, 32: R293 (2006) 
- 
								[23]
								M. Ablikim et al., Phys. Rev. Lett., 107: 182001 (2011) 
- 
								[24]
								C. Amsler et al., Phys. Lett. B, 358: 289 (1995) 
- 
								[25]
								M. Acciarri et al., Phys. Lett. B, 501: 1 (2001) 
- 
								[26]
								C. J. Morningstar and M. Peardon, Phys. Rev. D, 60: 034509 (1999) 
- 
								[27]
								Gang Hao, Cong-Feng Qiao, and Ai-Lin Zhang, Phys. Lett. B, 642: 53 (2006) 
- 
								[28]
								G. Gabadadze, Phys. Rev. D, 58: 055003 (1998) 
- 
								[29]
								L. Faddeev, A. J. Niemi, and U. Wiedner, Phys. Rev. D, 70: 114033 (2004) 
- 
								[30]
								H.-Y. Cheng, H.-N. Li, and K.-F. Liu, Phys. Rev. D, 79: 014024 (2009) 
- 
								[31]
								Meng-Chuan Du and Qiang Zhao, Phys. Phys. D, 100: 036005 (2019) 
- 
								[32]
								W. I. Eshraim, S. Janowski, F. Giacosa et al., Phys. Rev. D, 87(5): 054036 (2013) 
- 
								[33]
								F. Brünner and A. Rebhan, Phys. Lett. B, 770: 124 (2017) 
- 
								[34]
								L. Micu, Nucl. Phys. B, 10: 521 (1969) 
- 
								[35]
								A. Le Yaouanc, L. Oliver, O. Pène et al., Phys. Rev. D, 8: 2223 (1973) 
- 
								[36]
								A. Le Yaouanc, L. Oliver, O. Pène et al., Hadron Transitions in the Quark Model, Gordon and Breach Science Publishers, New York, (1987) 
- 
								[37]
								E. S. Ackleh, T. Barnes, and E. S. Swanson, Phys. Rev. D, 54: 6811 (1996) 
- 
								[38]
								Z. G. Luo, X. L. Chen, and X. Liu, Phys. Rev. D, 79: 074020 (2009) 
- 
								[39]
								Y. Sun, Q.-T. Song, D.-Y. Chen et al., Phys. Rev. D, 89: 054026 (2014) 
- 
								[40]
								J. Segovia, D. R. Entem, and F. Fernández Grupo, Phys. Lett. B, 715: 322 (2012) 
- 
								[41]
								T. J. Burns, Phys. Rev. D, 90: 034009 (2014) 
- 
								[42]
								Harry G. Blundell, arXiv: hep-ph/9608473 
- 
								[43]
								Y. Yang, Z. Xia, and J. Ping, Phys. Rev. D, 81: 094003 (2010) 
- 
								[44]
								T. Feldmann, P. Kroll, and B. Stech, Phys. Rev. D, 58: 114006 (1998) 
- 
								[45]
								T. Feldmann, P. Kroll, and B. Stech, Phys. Lett. B, 449: 339 (1999) 
- 
								[46]
								N. Kochelev and D. P. Min, Phys. Rev. D, 72: 097502 (2005) 
- 
								[47]
								Y. D. Tsai, H. n. Li, and Q. Zhao, Phys. Rev. D, 85: 034002 (2012) 
- 
								[48]
								M. Jacob and G. C. Wick, Ann. Phys. (N.Y.), 7: 404 (1959) 
- 
								[49]
								C. Bernard, Phys. Lett. B, 108: 431 (1982) 
- 
								[50]
								J. M. Cornwall, Phys. Rev. D, 26: 1453 (1982) 
- 
								[51]
								M. Tanabashi et al. (Particle Data Group), Phys. Rev. D, 98: 030001 (2018) 
- 
								[52]
								Gang Hao, Cong-Feng Qiao, and Peng Sun, Phys. Rev. D, 76: 125013 (2007) 
- 
								[53]
								F. Brünner, D. Parganlija, and A. Rebhan, Phys. Rev. D, 91(10): 106002 (2015), Erratum: [Phys. Rev. D, 93(10): 109903 (2016)] 
- 
								[54]
								L. C. Gui et al. (CLQCD Collaboration), Phys. Rev. Lett., 110(2): 021601 (2013) 
- 
								[55]
								M. Strohmeier-Presicek, T. Gutsche, R. Vinh Mau et al., Phys. Rev. D, 60: 054010 (1999)