Forbidden unique beta-decays and neutrino mass
- NázevTitle
- Forbidden unique beta-decays and neutrino massForbidden unique beta-decays and neutrino mass
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- F. Šimkovic, R. Dvornický
- Klíčová slovaKeywords
- neutrino mass, unique forbidden ? decay, Kurie plot
- KonferenceConference
- Matrix Elements for the Double-beta-decay EXperiments (Prague, Czechia, 2013-06-11)
- DOIDOI
- 10.1063/1.4856544
- Časopis / citaceJournal / citation
- In: AIP Conference Proceedings, AIP Publishing LLC, 2013, pp. 36-39 · ISSN 0094-243X
- RokYear
- 2013
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Příspěvek k rozšíření velké výzkumné infrastruktury evropského významuContribution of the Czech Republic to the extension of the large research infrastructure of European importance
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The measurement of the electron spectrum in beta-decays provides a robust direct determination of the values of neutrino masses. The planned rhenium beta-decay experiment, called the “Microcalorimeter Arrays for a Rhenium Experiment” (MARE), might probe the absolute mass scale of neutrinos with the same sensitivity as the Karlsruhe tritium neutrino mass (KATRIN) experiment, which is expected to collect data in a near future. In this contribution we discuss the spectrum of emitted electrons close to the end point in the case of the first unique forbidden beta-decay of 79Se , 107Pd and 187Re . It is found that the rho_{3/2-} wave emission dominates over the s 1/2-wave. It is shown that the Kurie plot near the end point is within a good accuracy linear in the limit of massless neutrinos like the Kurie plot of the superallowed beta-decay of 3H .
The measurement of the electron spectrum in beta-decays provides a robust direct determination of the values of neutrino masses. The planned rhenium beta-decay experiment, called the “Microcalorimeter Arrays for a Rhenium Experiment” (MARE), might probe the absolute mass scale of neutrinos with the same sensitivity as the Karlsruhe tritium neutrino mass (KATRIN) experiment, which is expected to collect data in a near future. In this contribution we discuss the spectrum of emitted electrons close to the end point in the case of the first unique forbidden beta-decay of 79Se , 107Pd and 187Re . It is found that the rho_{3/2-} wave emission dominates over the s 1/2-wave. It is shown that the Kurie plot near the end point is within a good accuracy linear in the limit of massless neutrinos like the Kurie plot of the superallowed beta-decay of 3H .