Measurement of the Branching Ratio for the Beta Decay of 14O

P.A. Voytas, E.A. George, Gregory Severin, L. Zhan, L.D. Knutson

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Abstract

We present a new measurement of the branching ratio for the decay of 14O to the ground state of 14N. The experimental result, l0/ltotal = (4.934 0.040(stat.) 0.061(syst.)) ×10-3, is significantly smaller than previous determinations of this quantity. The new measurement allows an improved determination of the partial halflife for the superallowed 0+ 0+ Fermi decay to the 14N first excited state, which impacts the determination of the Vud element of the CKM matrix. With the new measurement in place, the corrected 14O F t value is in good agreement with the average F t for other superallowed 0+ 0+ Fermi decays.
Original languageEnglish
JournalPhysical Review C
Number of pages8
ISSN2469-9985
Publication statusAccepted/In press - 2015
Externally publishedYes

Cite this

Voytas, P. A., George, E. A., Severin, G., Zhan, L., & Knutson, L. D. (Accepted/In press). Measurement of the Branching Ratio for the Beta Decay of 14O. Physical Review C.
Voytas, P.A. ; George, E.A. ; Severin, Gregory ; Zhan, L. ; Knutson, L.D. . / Measurement of the Branching Ratio for the Beta Decay of 14O. In: Physical Review C. 2015.
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abstract = "We present a new measurement of the branching ratio for the decay of 14O to the ground state of 14N. The experimental result, l0/ltotal = (4.934 0.040(stat.) 0.061(syst.)) ×10-3, is significantly smaller than previous determinations of this quantity. The new measurement allows an improved determination of the partial halflife for the superallowed 0+ 0+ Fermi decay to the 14N first excited state, which impacts the determination of the Vud element of the CKM matrix. With the new measurement in place, the corrected 14O F t value is in good agreement with the average F t for other superallowed 0+ 0+ Fermi decays.",
author = "P.A. Voytas and E.A. George and Gregory Severin and L. Zhan and L.D. Knutson",
year = "2015",
language = "English",
journal = "Physical Review C (Nuclear Physics)",
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Voytas, PA, George, EA, Severin, G, Zhan, L & Knutson, LD 2015, 'Measurement of the Branching Ratio for the Beta Decay of 14O', Physical Review C.

Measurement of the Branching Ratio for the Beta Decay of 14O. / Voytas, P.A. ; George, E.A.; Severin, Gregory; Zhan, L. ; Knutson, L.D. .

In: Physical Review C, 2015.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Measurement of the Branching Ratio for the Beta Decay of 14O

AU - Voytas, P.A.

AU - George, E.A.

AU - Severin, Gregory

AU - Zhan, L.

AU - Knutson, L.D.

PY - 2015

Y1 - 2015

N2 - We present a new measurement of the branching ratio for the decay of 14O to the ground state of 14N. The experimental result, l0/ltotal = (4.934 0.040(stat.) 0.061(syst.)) ×10-3, is significantly smaller than previous determinations of this quantity. The new measurement allows an improved determination of the partial halflife for the superallowed 0+ 0+ Fermi decay to the 14N first excited state, which impacts the determination of the Vud element of the CKM matrix. With the new measurement in place, the corrected 14O F t value is in good agreement with the average F t for other superallowed 0+ 0+ Fermi decays.

AB - We present a new measurement of the branching ratio for the decay of 14O to the ground state of 14N. The experimental result, l0/ltotal = (4.934 0.040(stat.) 0.061(syst.)) ×10-3, is significantly smaller than previous determinations of this quantity. The new measurement allows an improved determination of the partial halflife for the superallowed 0+ 0+ Fermi decay to the 14N first excited state, which impacts the determination of the Vud element of the CKM matrix. With the new measurement in place, the corrected 14O F t value is in good agreement with the average F t for other superallowed 0+ 0+ Fermi decays.

M3 - Journal article

JO - Physical Review C (Nuclear Physics)

JF - Physical Review C (Nuclear Physics)

SN - 2469-9985

ER -

Voytas PA, George EA, Severin G, Zhan L, Knutson LD. Measurement of the Branching Ratio for the Beta Decay of 14O. Physical Review C. 2015.