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arXiv · 1303.2126

Nucleon and Delta axial-vector couplings in 1/Nc - Baryon Chiral Perturbation Theory

A. Calle Cordon·J. L. Goity
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Abstract

In this contribution, baryon axial-vector couplings are studied in the framework of the combined 1/Nc and chiral expansions. This framework is implemented on the basis of the emergent spin-flavor symmetry in baryons at large Nc and HBChPT, and linking both expansions (\xi-expansion), where 1/Nc is taken to be a quantity O(p). The study is carried out including one-loop contributions, which corresponds to O(\xi^3) for baryon masses and O(\xi^2) for the axial couplings. An analysis of the Lattice QCD results for the axial couplings of both N and \Delta is presented.

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A. Calle Cordon, J. L. Goity. 2013-03-08. Nucleon and Delta axial-vector couplings in 1/Nc - Baryon Chiral Perturbation Theory. https://arxiv.org/abs/1303.2126

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