High-Precision Half-Life Measurements for the Superallowed β+ Emitter 10C: Implications for Weak Scalar Currents

被引：14

作者：

Dunlop, M. R. ^{[1
]}

Svensson, C. E. ^{[1
]}

Ball, G. C. ^{[2
]}

Grinyer, G. F. ^{[3
]}

Leslie, J. R. ^{[4
]}

Andreoiu, C. ^{[5
]}

Austin, R. A. E. ^{[6
]}

Ballast, T. ^{[2
]}

Bender, P. C. ^{[2
]}

Bildstein, V. ^{[1
]}

Varela, A. Diaz ^{[1
]}

Dunlop, R. ^{[1
]}

Garnsworthy, A. B. ^{[2
]}

Garrett, P. E. ^{[1
]}

Hackman, G. ^{[2
]}

Hadinia, B. ^{[1
]}

Jamieson, D. S. ^{[1
]}

Laffoley, A. T. ^{[1
]}

MacLean, A. D. ^{[1
]}

Miller, D. M. ^{[2
]}

Mills, W. J. ^{[2
]}

Park, J. ^{[2
]}

Radich, A. J. ^{[1
]}

Rajabali, M. M. ^{[2
]}

Rand, E. T. ^{[1
]}

Unsworth, C. ^{[2
]}

Valencik, A. ^{[6
]}

Wang, Z. M. ^{[2
]}

Zganjar, E. F. ^{[7
]}

机构：

[1] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada

[2] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[3] CEA DRF CNRS IN2P3, GANIL, Bvd Henri Becquerel, F-14076 Caen, France

[4] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

[5] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada

[6] St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada

[7] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 17期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DECAY; LIVES;

D O I：

10.1103/PhysRevLett.116.172501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Precision measurements of superallowed Fermi beta-decay transitions, particularly for the lightest superallowed emitters C-10 and O-14, set stringent limits on possible scalar current contributions to the weak interaction. In the present work, a discrepancy between recent measurements of the C-10 half-life is addressed through two high-precision half-life measurements, via gamma-ray photopeak and beta counting, that yield consistent results for the C-10 half-life of T-1/2 = 19.2969 +/- 0.0074 s and T-1/2 = 19.3009 +/- 0.0017 s, respectively. The latter is the most precise superallowed beta-decay half-life measurement reported to date and the first to achieve a relative precision below 10(-4). A fit to the world superallowed beta-decay data including the C-10 half-life measurements reported here yields b(F) = -0.0018 +/- 0.0021 (68% C.L.) for the Fierz interference term and C-S/C-V = +.0009 +/- 0.0011 for the ratio of the weak scalar to vector couplings assuming left-handed neutrinos.

引用

页数：5

共 33 条

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APPLIED RADIATION AND ISOTOPES, 2021, 168
[32] Implications of high-precision measurements of 13C-18O bond ordering in CO2 for thermometry in modern bivalved mollusc shells
Petrizzo, Daniel A.
Young, Edward D.
Runnegar, Bruce N.
GEOCHIMICA ET COSMOCHIMICA ACTA, 2014, 142 : 400 - 410
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S. Sharma
G. F. Grinyer
G. C. Ball
J. R. Leslie
C. E. Svensson
F. A. Ali
C. Andreoiu
N. Bernier
S. S. Bhattacharjee
V. Bildstein
C. Burbadge
R. Caballero-Folch
R. Coleman
A. Diaz Varela
M. R. Dunlop
R. Dunlop
A. B. Garnsworthy
E. Gyabeng Fuakye
G. M. Huber
B. Jigmeddorj
K. Kapoor
A. T. Laffoley
K. G. Leach
J. Long
A. D. MacLean
C. R. Natzke
B. Olaizola
A. J. Radich
N. Saei
J. T. Smallcombe
A. Talebitaher
K. Whitmore
T. Zidar
The European Physical Journal A, 58 (5)

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