Radiative Neutron β-Decay in Effective Field Theory.
We consider radiative β-decay of the neutron in heavy baryon chiral perturbation theory. Nucleon-structure effects not encoded in the weak coupling constants gA and gV are determined at next-to-leading order in the chiral expansion, and enter at the [Formula: see text]-level, making a sensitive test of the Dirac structure of the weak currents possible.
Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
Susan
S
Gardner
Université Louis Pasteur, Laboratoire de Physique Théorique 3-5, rue de l'Université, F-67084 Strasbourg, France.
Véronique
V
Bernard
Universität Bonn, Helmholtz-Institut für Strahlen-und Kernphysik (Theorie) Nußallee 14-16, D-53115 Bonn, GermanyForschungszentrum Jülich, Institut für Kernphysik (Theorie) D-52425 Jülich, Germany.
Ulf-G
UG
Meißner
Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, USA.
Chi
C
Zhang
neutron β-decay; radiative corrections