Seminar Details

Beta Spectroscopy in 14O

Paul Voytas, Wittenberg University
Monday, November 11, 2:00 PM - Special Seminar
NSCL Lecture Hall

I will describe the status of an experiment investigating the beta decay of 14O using a novel superconducting beta spectrometer developed at the University of Wisconsin-Madison. The shape of the 0+  1+ ground state branch in the 14O  14N beta decay is sensitive to contributions beyond the allowed approximation. In particular, it is a good candidate for investigating the contributions from weak magnetism. In addition, the branching ratio in the decay is an important ingredient in analyses that use 0+  0+ superallowed beta decays to test the unitarity of the CKM matrix. Both the shape and branching ratio determinations are complicated by the smallness of the branching ratio (ca. 0.5% for the ground state branch) and the large gamma background from the excited branch decays. I will present our new measurements of the beta spectra for the ground state and first excited state branches in 14O decay and our results to date on the analysis of the shape and branching ratio.