Search for a Neutrino with a Mass of 0.01–1.0 MeV in Beta Decays of 144Ce–144Pr Nuclei

Spectra of electrons from beta decays of 144 Ce– 144 Pr nuclei have been measured and analyzed in order to find a contribution from a heavy neutrino. For the neutrino with the mass m νH in the interval of 150–350 keV, a new upper bound | U eH | 2 ≤ (2−5) × 10 −3 at 90% C.L. has been found for the mi...

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Bibliographic Details
Published inJETP letters Vol. 108; no. 8; pp. 499 - 503
Main Authors Derbin, A. V., Drachnev, I. S., Lomskaya, I. S., Muratova, V. N., Pilipenko, N. V., Semenov, D. A., Tukkhonen, L. M., Unzhakov, E. V., Khusainov, A. Kh
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2018
Springer Nature B.V
Subjects
Atomic
Beta decay
Biological and Medical Physics
Biophysics
Cerium 144
Fields
Molecular
Neutrinos
Nuclei
Nuclei (nuclear physics)
Optical and Plasma Physics
Particle and Nuclear Physics
Particles
Physics
Physics and Astronomy
Praseodymium isotopes
Quantum Information Technology
Solid State Physics
Spintronics
Upper bounds
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Summary:Spectra of electrons from beta decays of 144 Ce– 144 Pr nuclei have been measured and analyzed in order to find a contribution from a heavy neutrino. For the neutrino with the mass m νH in the interval of 150–350 keV, a new upper bound | U eH | 2 ≤ (2−5) × 10 −3 at 90% C.L. has been found for the mixing parameter.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364018200067