Pion electroproduction amplitude

2001/05/31 by E. Truhlı́k, E. Truhlik · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.64.055501

published as Phys.Rev. C64 (2001) 055501 · 14 pages, 6 figures, revised version, accepted for publication in Phys. Rev. C

arxiv created 2001/08/29 · openalex publication_date 2001/10/19 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We analyze amplitudes for the pion electroproduction on proton derived from Lagrangians based on the local chiral SU(2)\ifmmode×\else\texttimes\fiSU(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.

Citations

• Chiral Lagrangians and the Transition Amplitude for Radiative Muon Capture

Cited by

• Induced pseudoscalar coupling of the proton weak interaction