The SU(3) Vector Currents in BChPT x 1/Nc
Ishara P. Fernando, Jose L. Goity
TL;DR
This paper applies baryon chiral perturbation theory combined with 1/Nc expansion to analyze SU(3) vector currents, including SU(3) breaking corrections, at next-to-next-to-leading order, for generic Nc, revealing various Nc scalings.
Contribution
It introduces a combined approach of BChPT and 1/Nc expansion at NNLO to study SU(3) vector currents with SU(3) breaking effects, extending previous analyses.
Findings
Results include SU(3) breaking corrections to vector charges, charge radii, and magnetic moments.
The study explores Nc scaling behaviors of these quantities.
Provides a framework for analyzing baryon properties across different Nc values.
Abstract
Baryon Chiral Perturbation Theory (BChPT) combined with the 1/Nc expansion is applied to the SU(3) vector currents. In terms of the xi power counting linking the low energy and 1/Nc expansions according to O(xi) = O(p) = O(1/Nc), the study is carried out to next-to-next-to-leading order, and it includes SU(3) breaking corrections to the |Delta S|= 1 vector charges, charge radii, and magnetic moments and radii. The results are obtained for generic Nc, allowing for investigating the various scalings in Nc.
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