Further comment on pion electroproduction and the axial form factor

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We show that a recent claim (H.Haberzettl, Phys. Rev. Lett. 85 (2000) 3576) that one cannot extract the nucleon weak axial form factor G_A (t) from charged pion threshold electroproduction is incorrect. Thus previous calculations remain valid and threshold charged pion electroproduction experiments can indeed be used to determine G_A (t), and they should certainly be pursued.
2 pp, somewhat more detailed than the comment by P. Guichon, hep-ph/0012126

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/40277

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0101062
 http://arxiv.org/abs/hep-ph/0101062

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arXiv