Phys. Rev. C 101, 055504 (2020) - Precise half-life determination of the mixed-mirror $\ensuremath{\beta}$-decaying $^{15}\mathrm{O}$

Precise half-life determination of the mixed-mirror $β$ -decaying ${}^{15}O$

D. P. Burdette, M. Brodeur, D. W. Bardayan, F. D. Becchetti, D. Blankstein, C. Boomershine, L. Caves, S. L. Henderson, J. J. Kolata, B. Liu, J. Long, P. D. O'Malley, and S. Y. Strauss

Phys. Rev. C 101, 055504 – Published 14 May 2020

Abstract

The half-life of ${}^{15}O$ was measured using the $β$ -Counting Station at the University of Notre Dame's Nuclear Science Laboratory. Our new result, $t_{1 / 2} = 122.308 (49)$ s, is the most precise determination to date for ${}^{15}O$ , and improves the world average by a factor of 4, yielding $t_{1 / 2}^{world} = 122.27 (6)$ s. This more precise value will be important for future determinations of $V_{ud}$ using superallowed $T = 1 / 2$ mirror transitions.

Received 19 December 2019
Accepted 6 April 2020

DOI:https://doi.org/10.1103/PhysRevC.101.055504

©2020 American Physical Society

Physics Subject Headings (PhySH)

Beta decay Electroweak interactions in nuclear physics Lifetimes & widths Nuclear tests of fundamental interactions Unstable nuclei induced nuclear reactions

Nuclear Physics

Authors & Affiliations

D. P. Burdette ^1,*, M. Brodeur¹, D. W. Bardayan¹, F. D. Becchetti ², D. Blankstein¹, C. Boomershine¹, L. Caves¹, S. L. Henderson ¹, J. J. Kolata¹, B. Liu¹, J. Long¹, P. D. O'Malley¹, and S. Y. Strauss ¹

¹Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 USA
²Physics Department, University of Michigan, Ann Arbor, Michigan 48109 USA

^*dburdett@nd.edu

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Vol. 101, Iss. 5 — May 2020

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