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arXiv · 0805.0603

Isospin-symmetry-breaking corrections to superallowed Fermi beta decay: Formalism and schematic models

G. A. Miller·A. Schwenk
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Abstract

We study the formalism to include isospin-symmetry-breaking corrections when extracting the up-down Cabibbo-Kobayashi-Maskawa matrix element from superallowed 0+ -> 0+ nuclear beta decay. We show that there are no first order isospin-symmetry-breaking corrections to the relevant nuclear matrix elements. We find corrections to the treatment of Towner and Hardy, and assess these using schematic models of increasing complexity.

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G. A. Miller, A. Schwenk. 2008-09-08. Isospin-symmetry-breaking corrections to superallowed Fermi beta decay: Formalism and schematic models. https://doi.org/10.1103/physrevc.78.035501

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