Nucleon-to-Delta axial transition form factors in relativistic baryon chiral perturbation theory

Details Nucleon-to-Delta axial transition form factors in relativistic baryon chiral perturbation theory Nucleon-to-Delta axial transition form factors in relativistic baryon chiral perturbation theory

2008-01-29

arxiv.org/abs/0801.4495v2

Phys.Rev.D78:014011,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

A few clarifying remarks added; version to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.78.014011

We report a theoretical study of the axial Nucleon to Delta(1232) ($N\to\Delta$) 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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