Search for neutrinoless double-beta decay of Mo-100 with the NEMO-3 detector
- NázevTitle
- Search for neutrinoless double-beta decay of Mo-100 with the NEMO-3 detectorSearch for neutrinoless double-beta decay of Mo-100 with the NEMO-3 detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- R. Arnold, C. Augier, JD. Baker, R. Hodák, F. Mamedov, E. Rukhadze, A. Smetana, K. Smolek, I. Štekl, F. Šimkovic
- DOIDOI
- 10.1103/PhysRevD.89.111101
- Časopis / citaceJournal / citation
- Physical Review D. 2014, 89(11), 111101-1-111101-6. ISSN 1550-7998.
- RokYear
- 2014
- JazykLanguage
- eng
- WoSWoS
- 000338660100001
- ScopusScopus
- 2-s2.0-84902985014
- RIVRIV
- RIV/68407700:21670/14:00226645!RIV15-MSM-21670___
- ProjektProject
- Speciální detekční techniky a studium potlačení pozadí pro účely experimentu COBRA (bezneutrinový dvojitý rozpad beta)Special detection techniques and the study of background suppression within the COBRA experiment (neutrinoless double beta decay); Příspěvek k rozšíření velké výzkumné infrastruktury evropského významuContribution of the Czech Republic to the extension of the large research infrastructure of European importance
AbstraktAbstract
We report the results of a search for the neutrinoless double-beta decay (0 upsilon beta beta) of Mo-100, using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7 kg . y, no evidence for the 0 upsilon beta beta signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of T-1/2(0 upsilon beta beta) > 1.1 x 10(24) years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the nuclear matrix elements this corresponds to an upper limit on the Majorana effective neutrino mass of < m(upsilon)> < 0.3-0.9 eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0 upsilon beta beta decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.2-10] MeV is observed for an exposure of 47 kg . y.
We report the results of a search for the neutrinoless double-beta decay (0 upsilon beta beta) of Mo-100, using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7 kg . y, no evidence for the 0 upsilon beta beta signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of T-1/2(0 upsilon beta beta) > 1.1 x 10(24) years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the nuclear matrix elements this corresponds to an upper limit on the Majorana effective neutrino mass of < m(upsilon)> < 0.3-0.9 eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0 upsilon beta beta decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.2-10] MeV is observed for an exposure of 47 kg . y.