• [1]

    T. Janssens, R. Hofstadter, E. B. Hughes et al., Phys. Rev. 142, 922 (1966)

  • [2]

    L. E. Price et al., Phys. Rev. D 4, 45 (1971)

  • [3]

    A. Lung et al., Phys. Rev. Lett. 70, 718 (1993)

  • [4]

    E. E. W. Bruins et al., Phys. Rev. Lett. 75, 21 (1995)

  • [5]

    W. Bartel et al., Nucl. Phys. B 58, 429 (1973)

  • [6]

    J. Bernauer et al. (A1 Collaboration), Phys. Rev. C 90, 015206 (2014)

  • [7]

    H. Anklin et al., Phys. Lett. B 336, 313 (1994)

  • [8]

    P. Markowitz et al., Phys. Rev. C 48, R5 (1993)

  • [9]

    J. Lachniet et al. (CLAS Collaboration), Phys. Rev. Lett. 102, 192001 (2009)

  • [10]

    D. T. Spayde et al. (SAMPLE Collaboration), Phys. Lett. B 583, 79 (2004)

  • [11]

    F. E. Maas et al., Phys. Rev. Lett. 94, 152001 (2005)

  • [12]

    D. S. Armstrong et al. (G0 Collaboration), Phys. Rev. Lett. 95, 092001 (2005)

  • [13]

    A. Acha et al. (HAPPEX Collaboration), Phys. Rev. Lett. 98, 032301 (2007)

  • [14]

    F. Gross, G. Ramalho, and M. Pena, Phys. Rev. D 85, 093005 (2012)

  • [15]

    Z. Y. Zhang, Y. W. Yu, P. N. Shen et al., Nucl. Phys. A 625, 59 (1997)

  • [16]

    L. R. Dai, Z. Y. Zhang, Y. W. Yu et al., Nucl. Phys. A 727, 321 (2003)

  • [17]

    A. W. Thomas, S. Theberge, and G. A. Miller, Phys. Rev. D 24, 216 (1981)

  • [18]

    D. H. Lu, A. W. Thomas, and A. G. Williams, Phys. Rev. C 57, 2628 (1998)

  • [19]

    V. E. Lyubovitskij, P. Wang, T. Gutsche et al., Phys. Rev. C 66, 055204 (2002)

  • [20]

    M. De Sanctis, J. Ferretti, E. Santopinto et al., Phys. Rev. C 84, 055201 (2011)

  • [21]

    M. A. Ivanov and V. E. Lyubovitskij, Phys. Lett. B 408, 435 (1997)

  • [22]

    A. Faessler, T. Gutsche, M. A. Ivanov et al., Phys. Rev. D 68, 014011 (2003)

  • [23]

    H. Weigel, A. Abada, R. Alkofer et al., Phys. Lett. B 353, 20 (1995)

  • [24]

    M. E. Carrillo-Serrano, W. Bentz, I. C. Cloet et al., Phys. Lett. B 759, 178 (2016)

  • [25]

    C. D. Roberts, Prog. Part. Nucl. Phys. 61, 50 (2008)

  • [26]

    R. Bijker, Eur. Phys. J. A 32, 403 (2007)

  • [27]

    S. J. Brodsky and G. F. de Teramond, Phys. Rev. D 83, 036011 (2011)

  • [28]

    Dian-Yong Chen and Yu-Bing Dong, Nucl. Phys. A 832, 209 (2010)

  • [29]

    P. Schweitzer, M. Colli, and S. Boffi, Phys. Rev. D 67, 114022 (2003)

  • [30]

    K. Goeke et al., Phys. Rev. D 75, 094021 (2007)

  • [31]

    R. S. Sufian, Y. B. Yang, J. Liang et al. (χQCD Collaboration), Phys. Rev. D 96, 114504 (2017)

  • [32]

    Y. Jang, R. Gupta, H.-W. Lin et al. (PNDME Collaboration), Phys. Rev. D 101, 014507 (2020)

  • [33]

    S. Weinberg, Physical A 96, 327 (1979)

  • [34]

    J. Gasser and H. Leutwyler, Ann. Phys. 158, 142 (1984)

  • [35]

    T. Fuchs, J. Gegelia, and S. Scherer, J. Phys. G 30, 1407 (2004)

  • [36]

    B. Kubis and U.-G. Meissner, Nucl. Phys. A 679, 698 (2001)

  • [37]

    P. Wang, F. C. He, C.-R. Ji et al., arXiv: 2206.09361

  • [38]

    F. C He and P. Wang, Phys. Rev. D 97, 036007 (2018)

  • [39]

    F. C He and P. Wang, Phys. Rev. D 98, 036007 (2018)

  • [40]

    Y. Salamu, C.-R. Ji, W. Melnitchouk et al., Phys. Rev. D 99, 014041 (2019)

  • [41]

    Y. Salamu, C.-R. Ji, W. Melnitchouk et al., Phys. Rev. D 100, 094026 (2019)

  • [42]

    F. He, C.-R. Ji, W. Melnitchouk et al., Phys. Rev. D 105, 094007 (2022)

  • [43]

    F. He, C.-R. Ji, W. Melnitchouk et al., Phys. Rev. D 106, 054006 (2022)

  • [44]

    F. C. He and P. Wang, Eur. Phys. J. Plus 135, 156 (2020)

  • [45]

    H. Li and P. Wang, arXiv: 2112.02971

  • [46]

    M. Y. Yang and P. Wang, Phys. Rev. D 102, 056024 (2020)

  • [47]

    P. Wang, D.B. Leinweber, A. W. Thomas et al., Phys. Rev. D 86, 094038 (2012)

  • [48]

    P. Wang, D.B. Leinweber, and A. W. Thomas, Phys. Rev. D 89, 033008 (2014)

  • [49]

    B. Kubis and U.-G. Meissner, Eur. Phys. J. C 18, 747 (2001)

  • [50]

    V. Pascalutsa, M. Vanderhaeghen, and S. N. Yang, Phys. Rept. 437, 125 (2007)

  • [51]

    S. Baunack et al., Phys. Rev. Lett. 102, 151803 (2009)