Journal
PHYSICAL REVIEW D
Volume 64, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.64.017301
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We calculate the one-loop electroweak corrections to the decay t --> bW(+), including the counterterm for the CKM matrix elements V-tb. Previous calculations used an incorrect deltaV(tb) that led to a gauge dependent amplitude. However, since the contribution stemming from deltaV(tb) is small, those calculations only underestimate the width by roughly 1 part in 10(5).
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