Tests of isospin mixing corrections in superallowed 0(+)-->0(+) beta decays.
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Measurements of superallowed 0+ 0+ nuclear decays, corrected for radiative and charge-dependent effects, yield fundamental properties of the weak interaction. Model predictions of the necessary corrections exist, but they have never been tested directly by experiment. The present work reports, for the first time, observations of (or limits on) nonanalog 0+ 0+ branches in K38m, V46, Mn50, and Co54, and tests of the model predictions for isospin-mixing corrections. The resulting unitarity test of the top row of the Kobayashi-Maskawa matrix is 0.9983 0.0015. 1994 The American Physical Society.
author list (cited authors)
Hagberg, E., Koslowsky, V. T., Hardy, J. C., Towner, I. S., Hykawy, J. G., Savard, G., & Shinozuka, T.
complete list of authors
Hagberg, E||Koslowsky, VT||Hardy, JC||Towner, IS||Hykawy, JG||Savard, G||Shinozuka, T