| [1] | T. Barnes and E. S. Swanson, Phys. Rev. D, 46: 131 (1992) doi: 10.1103/PhysRevD.46.131 |
| [2] | E. S. Swanson, Ann. Phys. (N.Y.), 220: 73 (1992) doi: 10.1016/0003-4916(92)90327-I |
| [3] | T. Barnes, E. S. Swanson, and J. Weinstein, Phys. Rev. D, 46: 4868 (1992) doi: 10.1103/PhysRevD.46.4868 |
| [4] | T. Barnes, N. Black, and E. S. Swanson, Phys. Rev. C, 63: 025204 (2001) doi: 10.1103/PhysRevC.63.025204 |
| [5] | G. Colangelo, J. Gasser, and H. Leutwyler, Nucl. Phys. B, 603: 125 (2001) doi: 10.1016/S0550-3213(01)00147-X |
| [6] | A. Dobado, M. J. Herrero, and T. N. Truong, Phys. Lett. B, 235: 134 (1990) doi: 10.1016/0370-2693(90)90109-J |
| [7] | A. Dobado and J. R. Peláez, Phys. Rev. D, 56: 3057 (1997) doi: 10.1103/PhysRevD.56.3057 |
| [8] | F. Guerrero and J. A. Oller, Nucl. Phys. B, 537: 459 (1999) doi: 10.1016/S0550-3213(98)00663-4 |
| [9] | A. G. Nicola and J. Peláez, Phys. Rev. D, 65: 054009 (2002) doi: 10.1103/PhysRevD.65.054009 |
| [10] | J. Nebreda and J. R. Peláez, Phys. Rev. D, 81: 054035 (2010) doi: 10.1103/PhysRevD.81.054035 |
| [11] | M. Döring and U.-G. Meißner, JHEP, 01: 009 (2012) |
| [12] | F.-K. Guo, R.-G. Ping, P.-N. Shen, H.-C. Chiang, and B. S. Zou, Nucl. Phys. A, 773: 78 (2006) doi: 10.1016/j.nuclphysa.2006.04.008 |
| [13] | I. V. Danilkin, L. I. R. Gil, and M. F. M. Lutz, Phys. Lett. B, 703: 504 (2011) doi: 10.1016/j.physletb.2011.08.001 |
| [14] | Y.-Q. Li and X.-M. Xu, Nucl. Phys. A, 794: 210 (2007) doi: 10.1016/j.nuclphysa.2007.08.009 |
| [15] | Z.-Y. Shen and X.-M. Xu, J. Korean Phys. Soc., 66: 754 (2015) doi: 10.3938/jkps.66.754 |
| [16] | Z.-Y. Shen, X.-M. Xu, and H. J. Weber, Phys. Rev. D, 94: 034030 (2016) doi: 10.1103/PhysRevD.94.034030 |
| [17] | D. Lohse, J. W. Durso, K. Holinde, and J. Speth, Nucl. Phys. A, 516: 513 (1990) doi: 10.1016/0375-9474(90)90126-7 |
| [18] | G. E. Brown, C. M. Ko, Z. G. Wu, and L. H. Xia, Phys. Rev. C, 43: 1881 (1991) doi: 10.1103/PhysRevC.43.1881 |
| [19] | K. Yang, X.-M. Xu, and H. J. Weber, Phys. Rev. D, 96: 114025 (2017) doi: 10.1103/PhysRevD.96.114025 |
| [20] | K. Nakamura et al (Particle Data Group), J. Phys. G, 37: 075021 (2010) doi: 10.1088/0954-3899/37/7A/075021 |
| [21] | S.-T. Ji, Z.-Y. Shen, and X.-M. Xu, J. Phys. G, 42: 095110 (2015) doi: 10.1088/0954-3899/42/9/095110 |
| [22] | W. Buchmüller and S.-H. H. Tye, Phys. Rev. D, 24: 132 (1981) doi: 10.1103/PhysRevD.24.132 |
| [23] | F. Karsch, E. Laermann, and A. Peikert, Nucl. Phys. B, 605: 579 (2001) doi: 10.1016/S0550-3213(01)00200-0 |
| [24] | X.-M. Xu, Nucl. Phys. A, 697: 825 (2002) doi: 10.1016/S0375-9474(01)01259-3 |
| [25] | S. Godfrey and N. Isgur, Phys. Rev. D, 32: 189 (1985) doi: 10.1103/PhysRevD.32.189 |
| [26] | G. B. Arfken and H. J. Weber, Mathematical Methods for Physicists (Elsevier, Amsterdam, 2006) |