| [1] | E. Oset et al, Int. J. Mod. Phys. E, 25:1630001 (2016) | 
	
			| [2] | P. del Amo Sanchez et al[BaBar Collaboration], Phys. Rev. D 93 (5):052013 (2016) | 
	
			| [3] | Y. Ushiroda et al (Belle Collaboration), Phys. Rev. D, 74:111104 (2006) | 
	
			| [4] | B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 79:011102 (2009) | 
	
			| [5] | H. Sahoo et al (Belle Collaboration), Phys. Rev. D, 84:071101 (2011) | 
	
			| [6] | B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 70:091104 (2004) | 
	
			| [7] | R. Aaij et al (LHCb Collaboration), Phys. Rev. D, 92 (11):112002 (2015) | 
	
			| [8] | Y. Amhis et al, Eur. Phys. J. C, 77 (12):895 (2017) | 
	
			| [9] | G. R. Lu, R. M. Wang, and Y. D. Yang, Eur. Phys. J. C, 34:291 (2004) | 
	
			| [10] | Y. Li and C. D. Lu, Phys. Rev. D, 74:097502 (2006) | 
	
			| [11] | A. Kozachuk, D. Melikhov, and N. Nikitin, Phys. Rev. D, 93 (1):014015 (2016) | 
	
			| [12] | S. de Boer and G. Hiller, JHEP, 1708:091 (2017) | 
	
			| [13] | A. Khodjamirian, G. Stoll, and D. Wyler, Phys. Lett. B, 358:129 (1995) | 
	
			| [14] | Li-Sheng Geng and Eulogio Oset, Phys. Rev. D, 94:014018 (2016) | 
	
			| [15] | J. J. Sakurai, Currents and Mesons, (Chicago:University of Chicago Press, 1969) | 
	
			| [16] | M. Bando, T. Kugo, S. Uehara, K. Yamawaki, and T. Yanagida, Phys. Rev. Lett., 54:1215 (1985) | 
	
			| [17] | M. Bando, T. Kugo, and K. Yamawaki, Phys. Rep., 164:217 (1988) | 
	
			| [18] | U. G. Meissner, Phys. Rep., 161:213 (1988) | 
	
			| [19] | S. Fajfer and P. Singer, Phys. Rev. D, 56:4302 (1997) | 
	
			| [20] | S. Fajfer, S. Prelovsek, and P. Singer, Eur. Phys. J. C, 6:471 (1999) | 
	
			| [21] | B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 78:071101 (2008) | 
	
			| [22] | A. Abdesselam et al (Belle Collaboration), Phys. Rev. Lett., 118 (5):051801 (2017) | 
	
			| [23] | A. Biswas, S. Mandal, and N. Sinha, arXiv:1702.05059[hep-ph] | 
	
			| [24] | Y. L. Shen and G. Li, Eur. Phys. J. C, 73:2441 (2013) | 
	
			| [25] | G. Burdman, E. Golowich, J. L. Hewett, and S. Pakvasa, Phys. Rev. D, 52:6383 (1995) | 
	
			| [26] | M. Bayar, W. H. Liang, and E. Oset, Phys. Rev. D, 90:114004 (2014) | 
	
			| [27] | J. R. Pelaez and G. Rios, Phys. Rev. Lett., 97:242002 (2006) | 
	
			| [28] | S. Weinberg, Phys. Rev., 137:B672 (1965) | 
	
			| [29] | C. Hanhart, Y. S. Kalashnikova, and A. V. Nefediev, Phys. Rev. D, 81:094028 (2010) | 
	
			| [30] | D. Gamermann, J. Nieves, E. Oset, and E. Ruiz Arriola, Phys. Rev. D, 81:014029 (2010) | 
	
			| [31] | T. Hyodo, D. Jido, and A. Hosaka, Phys. Rev. C, 78:025203 (2008) | 
	
			| [32] | T. Sekihara, T. Hyodo, and D. Jido, PTEP, 2015:063D04 (2015) | 
	
			| [33] | F. Aceti and E. Oset, Phys. Rev. D, 86:014012 (2012) | 
	
			| [34] | C. W. Xiao, F. Aceti, and M. Bayar, Eur. Phys. J. A, 49:22 (2013) | 
	
			| [35] | N. N. Achasov, M. S. Dubrovin, V. N. Ivanchenko, A. A. Kozhevnikov, and E. V. Pakhtusova, Int. J. Mod. Phys. A, 7:3187 (1992) | 
	
			| [36] | N. N. Achasov and A. A. Kozhevnikov, Phys. Lett. B, 233:474 (1989) | 
	
			| [37] | N. N. Achasov and A. A. Kozhevnikov, Int. J. Mod. Phys. A, 7:4825 (1992) | 
	
			| [38] | J. A. Oller, E. Oset, and J. R. Pelaez, Phys. Rev. D, 62:114017 (2000) | 
	
			| [39] | C. Patrignani et al (Particle Data Group), Chin. Phys. C, 40 (10):100001 (2016) | 
	
			| [40] | H. Y. Cheng, Phys. Rev. D, 51:6228 (1995) | 
	
			| [41] | E. Golowich and S. Pakvasa, Phys. Lett. B, 205:393 (1988) | 
	
			| [42] | E. Golowich and S. Pakvasa, Phys. Rev. D, 51:1215 (1995) | 
	
			| [43] | J. F. Donoghue, E. Golowich, and A. A. Petrov, Phys. Rev. D, 55:2657 (1997) | 
	
			| [44] | J. J. Xie, L. R. Dai, and E. Oset, Phys. Lett. B, 742:363 (2015) | 
	
			| [45] | H. Nagahiro, L. Roca, A. Hosaka, and E. Oset, Phys. Rev. D, 79:014015 (2009) | 
	
			| [46] | H. Nagahiro, J. Yamagata-Sekihara, E. Oset, S. Hirenzaki, and R. Molina, Phys. Rev. D, 79:114023 (2009) | 
	
			| [47] | M. Wirbel, B. Stech, and M. Bauer, Z. Phys. C, 29:637 (1985) M. Bauer, B. Stech, and M. Wirbel, Z. Phys. C, 34:103 (1987) |