Unique forbidden beta decays and neutrino mass

Journal Article · Wed Oct 28 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4934898· OSTI ID:22492664

Dvornický, Rastislav ^[1]; Šimkovic, Fedor ^[2]

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1. Dzhelepov Laboratory of Nuclear Problems, JINR 141980 Dubna (Russian Federation)
2. Comenius University, Mlynská dolina F1, SK-842 48 Bratislava (Slovakia)

The measurement of the electron energy spectrum in single β decays close to the endpoint provides a direct determination of the neutrino masses. The most sensitive experiments use β decays with low Q value, e.g. KATRIN (tritium) and MARE (rhenium). We present the theoretical spectral shape of electrons emitted in the first, second, and fourth unique forbidden β decays. Our findings show that the Kurie functions for these unique forbidden β transitions are linear in the limit of massless neutrinos like the Kurie function of the allowed β decay of tritium.

• OSTI ID: 22492664
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1686; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
ELECTRON EMISSION
ELECTRON SPECTRA
ELECTRONS
ENERGY SPECTRA
FERMI PLOT
MASS
NEUTRINOS
Q-VALUE
RHENIUM
TRITIUM