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Geng, Li Sheng; Martín Camalich, Jorge; Álvarez Ruso, Luis; Vicente Vacas, Manuel José | |||
Aquest document és un/a article, creat/da en: 2008 | |||
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We report a theoretical study of the axial nucleon-to-delta (1232) (N -> Delta) transition form factors up to one-loop order in relativistic baryon chiral perturbation theory. We adopt a formalism in which the Delta couplings obey the spin-3/2 gauge symmetry and, therefore, decouple the unphysical spin-1/2 fields. We compare the results with phenomenological form factors obtained from neutrino bubble-chamber data and in quark models. | |||
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