Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of Ca-48 with the NEMO-3 detector
- NázevTitle
- Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of Ca-48 with the NEMO-3 detectorMeasurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of Ca-48 with the NEMO-3 detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- R Arnold, L. Fajt, R. Hodák, F. Mamedov, P. Přidal, E. Rukhadze, A. Smetana, K. Smolek, I. Štekl, et al.
- Klíčová slovaKeywords
- shell model, double beta decay, Nuclei
- ExperimentCollaboration
- NEMO-3
- DOIDOI
- 10.1103/PhysRevD.93.112008
- Časopis / citaceJournal / citation
- Physical Review D 93(11), 112008 (2016) · ISSN 2470-0010
- RokYear
- 2016
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Podzemní laboratoř LSM (Laboratoire Souterrain de Modane, Francie) - český příspěvek do výzkumné infrastruktury evropského významuUnderground laboratory LSM (Laboratoire Souterrain de Modane, Francie) - Czech contribution to research infrastructure of European level; Technologie potlačení pozadí, detektorové techniky v jaderné fyzice a jejich aplikaceTechnologies of background suppression, detection techniques in nuclear physics and their applications
- CitovánoCited by
- 129 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- http://link.aps.org/pdf/10.1103/PhysRevD.93.112008
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The NEMO-3 experiment at the Modane Underground Laboratory investigates the double-beta decay of Ca-48. Using 5.25 yr of data recorded with a 6.99 g sample of Ca-48, approximately 150 double-beta decay candidate events are selected with a signal-to-background ratio greater than 3. The half-life for the two-neutrino double-beta decay of Ca-48 is measured to be T-1/2(2v) = [6.4(-0.6)(+0.7)(stat)(-0.6)(+0.7)(syst)] x 10(19) yr. A search for neutrinoless double-beta decay of Ca-48 yields a null result, and a corresponding lower limit on the half-life is found to be T-1/2(0v) > 2.0 x 10(22) yr at 90% confidence level, translating into an upper limit on the effective Majorana neutrino mass of < m(beta beta)> < 6.0-26 eV, with the range reflecting different nuclear matrix element calculations. Limits are also set on models involving Majoron emission and right-handed currents.
The NEMO-3 experiment at the Modane Underground Laboratory investigates the double-beta decay of Ca-48. Using 5.25 yr of data recorded with a 6.99 g sample of Ca-48, approximately 150 double-beta decay candidate events are selected with a signal-to-background ratio greater than 3. The half-life for the two-neutrino double-beta decay of Ca-48 is measured to be T-1/2(2v) = [6.4(-0.6)(+0.7)(stat)(-0.6)(+0.7)(syst)] x 10(19) yr. A search for neutrinoless double-beta decay of Ca-48 yields a null result, and a corresponding lower limit on the half-life is found to be T-1/2(0v) > 2.0 x 10(22) yr at 90% confidence level, translating into an upper limit on the effective Majorana neutrino mass of < m(beta beta)> < 6.0-26 eV, with the range reflecting different nuclear matrix element calculations. Limits are also set on models involving Majoron emission and right-handed currents.