First direct determination of the 48Ca double-β decay Q value

S. Bustabad; G. Bollen; M. Brodeur; D. L. Lincoln; S. J. Novario; M. Redshaw; R. Ringle; S. Schwarz; A. A. Valverde

doi:10.1103/PhysRevC.88.022501

First direct determination of the 48Ca double-β decay Q value

S. Bustabad, G. Bollen, M. Brodeur, D. L. Lincoln, S. J. Novario, M. Redshaw, R. Ringle, S. Schwarz, A. A. Valverde

Physics

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The low-energy beam and ion trap Penning trap mass spectrometer was used for an improved determination of the 48Ca double-β decay Q value: Q _ββ=4268.121(79)keV. The new value is 1.2 keV greater than the value in the 2012 atomic mass evaluation, a shift of three σ, and is a factor of 5 more precise. Accurate knowledge of this Q value is important for experimental searches to observe neutrinoless double-β decay (0νββ) in 48Ca and is essential for extracting the effective mass of the electron neutrino if the 48Ca half-life of 0νββ was experimentally determined.

Original language	English
Article number	022501
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.88.022501
State	Published - Aug 7 2013

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10.1103/PhysRevC.88.022501

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abstract = "The low-energy beam and ion trap Penning trap mass spectrometer was used for an improved determination of the 48Ca double-β decay Q value: Q ββ=4268.121(79)keV. The new value is 1.2 keV greater than the value in the 2012 atomic mass evaluation, a shift of three σ, and is a factor of 5 more precise. Accurate knowledge of this Q value is important for experimental searches to observe neutrinoless double-β decay (0νββ) in 48Ca and is essential for extracting the effective mass of the electron neutrino if the 48Ca half-life of 0νββ was experimentally determined.",

author = "S. Bustabad and G. Bollen and M. Brodeur and Lincoln, {D. L.} and Novario, {S. J.} and M. Redshaw and R. Ringle and S. Schwarz and Valverde, {A. A.}",

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AU - Bustabad, S.

AU - Bollen, G.

AU - Brodeur, M.

AU - Lincoln, D. L.

AU - Novario, S. J.

AU - Redshaw, M.

AU - Ringle, R.

AU - Schwarz, S.

AU - Valverde, A. A.

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AB - The low-energy beam and ion trap Penning trap mass spectrometer was used for an improved determination of the 48Ca double-β decay Q value: Q ββ=4268.121(79)keV. The new value is 1.2 keV greater than the value in the 2012 atomic mass evaluation, a shift of three σ, and is a factor of 5 more precise. Accurate knowledge of this Q value is important for experimental searches to observe neutrinoless double-β decay (0νββ) in 48Ca and is essential for extracting the effective mass of the electron neutrino if the 48Ca half-life of 0νββ was experimentally determined.

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First direct determination of the 48Ca double-β decay Q value

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