Speaker
Fernando Alvarado
Description
The axial form factor is a fundamental property of the nucleon and a key ingredient of neutrino-nucleon cross sections. We have calculated this form factor in relativistic Chiral Perturbation Theory at next to leading one-loop order. We investigate the problem of convergence of the perturbative series and fit to recent LQCD results. The explicit Delta(1232) is crucial to reconcile the light-quark mass dependence of the axial charge with phenomenology. Moreover, the axial radius is also extracted without relying on ad-hoc parametrisations.
Primary authors
Fernando Alvarado
Luis Alvarez-Ruso
