Quenching of spin operators in the calculation of radiative corrections for nuclear beta decay

Details Quenching of spin operators in the calculation of radiative corrections for nuclear beta decay Quenching of spin operators in the calculation of radiative corrections for nuclear beta decay

1994-05-31

arxiv.org/abs/nucl-th/9405031v1

Phys.Lett.B333:13-16,1994

Physics

Nuclear Physics

Nuclear Theory

LaTeX, 7 pages, no figures, TASCC-P-94-11

Scientific paper

10.1016/0370-2693(94)91000-6

Calculations of the axial-vector component to the radiative correction for
superallowed Fermi $0^+ \rightarrow 0^+$ nuclear beta decay are here modified
with quenched rather than free-nucleon coupling constants for the axial-vector
and electromagnetic interactions with nucleons. The result increases the
deduced value of $V_{ud}$ but does not restore unitarity in the CKM matrix.

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