| [1] |
C. Patrignani et al (Particle Data Group), Chin. Phys. C, 40:100001 (2016) |
| [2] |
A. Pevsner et al, Phys. Rev. Lett., 7:421 (1961); G. R. Kalbfleisch et al, Phys. Rev. Lett., 12:527 (1964); M. Goldberg et al, Phys. Rev. Lett., 12:546 (1964) |
| [3] |
P. Bickert, P. Masjuan, and S. Scherer, Phys. Rev. D, 95:054023 (2017) |
| [4] |
S. Weinberg, Phys. Rev. D, 11:3583 (1975); G. A. Christos, Phys. Rept., 116:251 (1984) |
| [5] |
L. A. Harland-Lang, V. A. Khoze, M. G. Ryskin and A. G. Shuvaev, Phys. Lett. B, 770:88 (2017); S. D. Bass, arXiv:hep-ph/0108187 |
| [6] |
A. A. Osipov, B. Hiller, A. H. Blin, and J. Moreira, Acta Phys. Polon. Supp., 9:413 (2016) |
| [7] |
C. Gatto, B. F. Enriquez, and M. I. P. Morales, PoS ICHEP2016:812 (2016) |
| [8] |
M. Ablikim et al (BESⅢ Collaboration), Chin. Phys. C, 41:013001 (2017) |
| [9] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 87:092011 (2013) |
| [10] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 92:012001 (2015) |
| [11] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 92:012014 (2015) |
| [12] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. Lett., 112:251801 (2014) |
| [13] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 92:051101 (2015) |
| [14] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 93:072008 (2016) |
| [15] |
Z. Y. Deng et al, Chinese Phys. C, 30:371 (2006) |
| [16] |
S. Jadach, B. F. L. Ward, and Z. Was, Comput. Phys. Commun., 130:260 (2009) |
| [17] |
S. Jadach, B. F. L. Ward, and Z. Was, Phys. Rev. D, 63:113009 (2001) |
| [18] |
R. G. Ping, Chinese Phys. C, 32:599 (2008); D. J. Lange, Nucl. Instrum. Meth. A, 462:152 (2001) |
| [19] |
J. C. Chen, G. S. Huang, X. R. Qi, D. H. Zhang, and Y. S. Zhu, Phys. Rev. D, 62:034003 (2000) |
| [20] |
W. D. Li et al, Proceeding of CHEP06, Mumbai, India (2006) |
| [21] |
Z. Y. Zhang, L. Q. Qin, and S. S. Fang, Chin. Phys. C, 36:926 (2012) |
| [22] |
Thimo Petri, arXiv:1010.2378[nucl-th] |
| [23] |
B. R. Holstein, Phys. Scripta, T99:55 (2002) |
| [24] |
R. Arnaldi et al (NA60 Collaboration), Phys. Lett. B, 757:437 (2016); P. Adlarson et al (A2 Collaboration at MAMI), Phys. Rev. C, 95:035208 (2017); R. I. Dzhelyadin et al, Phys. Lett. B, 94:548 (1980); R. Arnaldi et al (NA60 Collaboration), Phys. Lett. B, 677:260 (2009); H. Berghuser et al, Phys. Lett. B, 701:562 (2011); P. Aguar-Bartolome et al (A2 Collaboration at MAMI), Phys. Rev. C, 89:044608 (2014) |
| [25] |
M. Kawaguchi and S. Matsuzaki, Eur. Phys. J. A, 53:68 (2017) |
| [26] |
L. G. Landsberg, Phys. Rept., 128:301 (1985) |
| [27] |
M. Bando, T. Kugo and K. Yamawaki, Phys. Rep., 164:217 (1988) |
| [28] |
M. Harada and K. Yamawaki, Phys. Rep., 381:1 (2003) |
| [29] |
L. W. Bartel et al (JADE Collaboration), Phys. Lett. B, 113:190 (1982); H. Behrends et al, Phys. Lett. B, 114:78 (1982); C. Berger et al (PLUTO Collaboration), Phys. Lett. B, 142:125 (1984); M. Althoff et al (TASSO Collaboration), Phys. Lett. B, 147:487 (1984); H. Aihara et al (TPC/Two Gamma Collaboration), Phys. Rev. D, 35:2650 (1987); H. Albrecht et al (ARGUS Collaboration), Phys. Lett. B, 199:457 (1987); S. Bityukov et al, Z. Phys. C, 50:451 (1991) |
| [30] |
J. Wess and B. Zumino, Phys. Lett. B, 37:95 (1971); E. Witten, Nucl. Phys. B, 223:422 (1983) |
| [31] |
A. Abele et al (Crystal Barrel Collaboration), Phys. Lett. B, 402:195 (1997); R. R. Akhmetshin et al (CMD-2 Collaboration), Phys. Lett. B, 527:161 (2002); M. Benayoun et al, Z. Phys. C, 58:31 (1993) |
| [32] |
G. J. Gounaris and J. J. Sakurai, Phys. Rev. Lett., 21:244 (1968) |
| [33] |
F. Stollenwerk et al, Phys. Lett. B, 707:184 (2012) |
| [34] |
C. Hanhart et al, Eur. Phys. J. C, 77:98 (2017) |
| [35] |
A. Faessler, C. Fuchs, and M. Krivoruchenko, Phys. Rev. C, 61:035206 (2000) |
| [36] |
B. Borasoy and R. Nissler, Eur. Phys. J. A, 33:95 (2007) |
| [37] |
C. Terschlsen, S. Leupold, and M. Lutz, Eur. Phys. J. A, 48:190 (2012) |
| [38] |
C. Hanhart et al, Eur. Phys. J. C, 73:2668 (2013) |
| [39] |
G. Colangelo, J. Gasser and H. Leutwyler, Nucl. Phys. B, 603:125 (2001); W. A. Bardeen, Lowell S. Brown, B. W. Lee, and H. T. Nieh, Phys. Rev. Lett., 18:1170 (1967); K. Kampf et al, Phys. Rev. D, 84:114015 (2011); P. Guo et al, Phys. Rev. D, 92:054016 (2015); P. Guo et al, Phys. Lett. B, 771:497 (2017); G. Colangelo et al, Phys. Rev. Lett., 118:022001 (2017); M. Albaladejo and B. Moussallam, Eur. Phys. J. C, 77:508 (2017) |
| [40] |
M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. Lett., 108:182001 (2012) |
| [41] |
F. Ambrosino et al (KLOE Collaboration), J. High Energy Phys., 05:006 (2008) |
| [42] |
A. Anastasi et al (KLOE-2 Collaboration), J. High Energy Phys., 1605:19 (2016) |
| [43] |
M. Unverzagt et al (Crystal Ball at MAMI and TAPS and A2 Collaborations), Eur. Phys. J. A, 39:169 (2009) |
| [44] |
S. P. Schneider, B. Kubis and C. Ditsche, J. High Energy Phys., 1102:28 (2011) |
| [45] |
V. Dorofeev et al, Phys. Lett. B, 651:22 (2007); M. Ablikim et al (BESⅢ Collaboration), Phys. Rev. D, 83:012003 (2011); A. M. Blik et al, Phys. At. Nucl., 72:231 (2009); D. Alde et al (Serpukhov-Brussels-Los Alamos-Annecy(LAPP) Collaboration), Phys. Lett. B, 177:115 (1986); R. A. Briere et al (CLEO Collaboration), Phys. Rev. Lett., 84:26 (2000) |
| [46] |
B. Kubis and S. P. Schneider, Eur. Phys. J. C, 62:511 (2009) |
| [47] |
F.-K. Guo, B. Kubis, and A. Wirzba, Phys. Rev. D, 85:014014 (2012) |