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

In this contribution, baryon axial-vector couplings are studied in the framework of the combined 1/Nc and chiral expansions [1]. This framework is implemented on the basis of the emergent spin-flavor symmetry in baryons at large Nc and HBChPT, and linking both expansions (ξ-expansion), where 1/Nc is taken to be a quantity O(p). The study is carried out including one-loop contri-butions, which corresponds to O(ξ 3) for baryon masses and O(ξ 2) for the axial couplings. An analysis of the Lattice QCD results for the axial couplings of both N and ∆ is presented. The 7th International Workshop on Chiral Dynamics