Pion electroproduction amplitude

descriptionPublicationkeyboard_double_arrow_right Article 19 Oct 2001 English Publisher:American Physical Society (APS)Journal:Physical Review C, volume 64 (issn: 0556-2813, eissn: 1089-490X,

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Authors: E. Truhlík;

doi: 10.1103/physrevc.64.055501

Pion electroproduction amplitude

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Abstract

We analyze amplitudes for the pion electroproduction on proton derived from Lagrangians based on the local chiral $\mathrm{SU}(2)\ifmmode\times\else\texttimes\fi{}\mathrm{SU}(2)$ symmetries. We show that such amplitudes do contain information on the nucleon weak axial form factor ${F}_{A}$ in both soft and hard pion regimes. This result invalidates Haberzettl's recent claim that the pion electroproduction at threshold cannot be used to extract any information regarding ${F}_{A}.$

Related Organizations

Academy of Sciences Republic of Uzbekistan
Uzbekistan
Institute of Nuclear Physics
Uzbekistan
Czech Academy of Sciences
Czech Republic

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