Precise Half-Life Measurement of the Superallowed Beta+ Emitter 46V

Abstract

The half-life of 46V has been measured to be 422.66(6) ms, which is a factor of two more precise than the best previous measurement. Our result is also consistent with the previous measurements, with no repeat of the disagreement recently encountered with Q_{EC} values measured for the same transition. The Ft value for the 46V superallowed transition, incorporating all world data, is determined to be 3074.1(26) s, a result consistent with the average Ft value of 3072.08(79) s established from the 13 best-known superallowed transitions.

arXiv comment6 pages, 6 figures

References in corpus (6)

• Superallowed 0+ to 0+ nuclear beta decays: A new survey with precision tests of the conserved vector current hypothesis and the standard model
• An improved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi beta decay
• Q-values of the Superallowed beta-Emitters 26m-Al, 42-Sc and 46-V and their impact on V_ud and the Unitarity of the CKM Matrix
• Q_EC values of the Superallowed beta-Emitters 10-C, 34-Ar, 38-Ca and 46-V
• Precise Half-Life Measurement of the Superallowed Beta+ Emitter 26Si
• Q-Value for the Fermi Beta-Decay of 46V

Cited by in corpus (3)

• Superallowed 0+ --> 0+ nuclear beta decays: 2014 critical survey, with precise results for Vud and CKM unitarity
• The measurement and interpretation of superallowed 0+ to 0+ nuclear beta decay
• Precise half-life measurement of the superallowed emitter 30S