The mass of the electron neutrino from electron capture in 163Ho

S. Yasumi; H. Maezawa; K. Shima; Y. Inagaki; T. Mukoyama; T. Mizogawa; K. Sera; S. Kishimoto; M. Fujioka; K. Ishii; T. Omori; G. Izawa; O. Kawakami

doi:10.1016/0370-2693(94)90616-5

The mass of the electron neutrino from electron capture in ¹⁶³Ho

S. Yasumi, H. Maezawa, K. Shima, Y. Inagaki, T. Mukoyama, T. Mizogawa, K. Sera, S. Kishimoto, M. Fujioka, K. Ishii, T. Omori, G. Izawa, O. Kawakami

ENG - Quantum Science and Energy Engineering

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

18 Citations (Scopus)

Abstract

Using an M X-ray spectrum from electron capture in ¹⁶³Ho together with M X-ray fluorescence spectra of the Dy atom, the partial decay constants of ¹⁶³Ho, λ_M1 and λ_M2 were measured. With λ_M1, λ_M2 and λ_t (total decay constant) as three constraints, the mass of the electron neutrino, m_Ve, the Q-value, and log(ft) of the ¹⁶³Ho decay were simultaneously determined. Results obtained are m_Ve=110_-110⁺³⁵⁰ eV, Q=2.710_-0.005^+0.100 keV, and log(ft)=4.993_-0.001^+0.030.

Original language	English
Pages (from-to)	229-233
Number of pages	5
Journal	Physics Letters B
Volume	334
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(94)90616-5
Publication status	Published - 1994 Aug 11

ASJC Scopus subject areas

Nuclear and High Energy Physics

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title = "The mass of the electron neutrino from electron capture in 163Ho",

abstract = "Using an M X-ray spectrum from electron capture in 163Ho together with M X-ray fluorescence spectra of the Dy atom, the partial decay constants of 163Ho, λM1 and λM2 were measured. With λM1, λM2 and λt (total decay constant) as three constraints, the mass of the electron neutrino, mVe, the Q-value, and log(ft) of the 163Ho decay were simultaneously determined. Results obtained are mVe=110-110+350 eV, Q=2.710-0.005+0.100 keV, and log(ft)=4.993-0.001+0.030.",

author = "S. Yasumi and H. Maezawa and K. Shima and Y. Inagaki and T. Mukoyama and T. Mizogawa and K. Sera and S. Kishimoto and M. Fujioka and K. Ishii and T. Omori and G. Izawa and O. Kawakami",

year = "1994",

month = aug,

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doi = "10.1016/0370-2693(94)90616-5",

language = "English",

volume = "334",

pages = "229--233",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

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TY - JOUR

T1 - The mass of the electron neutrino from electron capture in 163Ho

AU - Yasumi, S.

AU - Maezawa, H.

AU - Shima, K.

AU - Inagaki, Y.

AU - Mukoyama, T.

AU - Mizogawa, T.

AU - Sera, K.

AU - Kishimoto, S.

AU - Fujioka, M.

AU - Ishii, K.

AU - Omori, T.

AU - Izawa, G.

AU - Kawakami, O.

PY - 1994/8/11

Y1 - 1994/8/11

N2 - Using an M X-ray spectrum from electron capture in 163Ho together with M X-ray fluorescence spectra of the Dy atom, the partial decay constants of 163Ho, λM1 and λM2 were measured. With λM1, λM2 and λt (total decay constant) as three constraints, the mass of the electron neutrino, mVe, the Q-value, and log(ft) of the 163Ho decay were simultaneously determined. Results obtained are mVe=110-110+350 eV, Q=2.710-0.005+0.100 keV, and log(ft)=4.993-0.001+0.030.

AB - Using an M X-ray spectrum from electron capture in 163Ho together with M X-ray fluorescence spectra of the Dy atom, the partial decay constants of 163Ho, λM1 and λM2 were measured. With λM1, λM2 and λt (total decay constant) as three constraints, the mass of the electron neutrino, mVe, the Q-value, and log(ft) of the 163Ho decay were simultaneously determined. Results obtained are mVe=110-110+350 eV, Q=2.710-0.005+0.100 keV, and log(ft)=4.993-0.001+0.030.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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