Hadronic electroweak current and $\pi - a_1$ mixing
High Energy Physics - Phenomenology
2018-12-26 v3
Abstract
It is found that in presence of electroweak interactions the gauge covariant diagonalization of the axial-vector -- pseudoscalar mixing in the effective meson Lagrangian leads to a deviation from the vector meson and the axial-vector meson dominance of the entire hadronic electroweak current. The essential features of such a modification of the theory are investigated in the framework of the extended Nambu-Jona-Lasinio model with explicit breaking of chiral symmetry. The Schwinger-DeWitt method is used as a major tool in our study of the real part of the relevant effective action. Some straightforward applications are considered.
Cite
@article{arxiv.1810.09632,
title = {Hadronic electroweak current and $\pi - a_1$ mixing},
author = {A. A. Osipov and B. Hiller and P. M. Zhang},
journal= {arXiv preprint arXiv:1810.09632},
year = {2018}
}
Comments
14 pages, four figures, the final version published in the Physical Review D