Abstract
The half-life of the isospin mirror decay of was measured at the GANIL-SPIRAL radioactive ion beam facility to be (10) s, a result that is more than a factor of 5 times more precise than the previous world average, with a resulting value that is now two times more precise. The precision of this new result implies that the half-life is no longer the dominant source of uncertainty in the value used in the calculation of from mirror decays to test the conserved vector current hypothesis of the standard model. The value of deduced from mirror decays using the new half-life result is now in better agreement with the derived from superallowed to transitions.
1 More- Received 30 October 2014
- Revised 4 February 2015
DOI:https://doi.org/10.1103/PhysRevC.91.032501
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Published by the American Physical Society