Branching ratios for the beta decay of Na-21
Abstract
We have measured the beta-decay branching ratio for the transition from Na-21 to the first excited state of Ne-21. A recently published test of the standard model, which was based on a measurement of the beta-nu correlation in the decay of Na-21, depended on this branching ratio. However, until now only relatively imprecise (and, in some cases, contradictory) values existed for it. Our new result, 4.74(4)%, reduces but does not remove the reported discrepancy with the standard model.
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/Subject
MONTE-CARLO CALCULATIONSPRECISE EFFICIENCY CALIBRATION
HPGE DETECTOR
NUCLEI
TRANSITIONS
Physics