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The Self-energy of Nucleon for the Pole term of the Axial-vector Current and the Neutron β-decay

2023/09/20 by Susumu Kinpara, Kinpara, Susumu
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2309.11060

openalex publication_date 2023/09/20 · openalex created_date 2023/09/22 · openalex updated_date 2026/07/28

Abstract

The effect of the pion propagator on the β-decay of neutron is investigated to account for the ratio of the axial-vector to the vector part gA/gV by including the pole term. A suggestion is made that the sign and the size of the vertex correction is appropriate to improve the discrepancy between the result of the model hamiltonian and the experiment.

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