6533b836fe1ef96bd12a09d1
RESEARCH PRODUCT
Detailed studies of $^{100}$Mo two-neutrino double beta decay in NEMO-3
S. BlotI. VanushinLukas FajtM. BongrandFrédéric NowackiKarel SmolekR. SaakyanC. VilelaB. SouléC. AugierMasaharu NomachiVl. I. TretyakS. JullianA. SmetanaV.e. KovalenkoH. GómezY. A. RamachersJose BustoF. MaugerJ. J. EvansP. GuzowskiY. LemièreA. S. BarabashS. CalvezC. PatrickA. HuberD.v. FilosofovM. MackoM. MackoJouni SuhonenA. ChaponX. SarazinF. XieA. ChopraZ. J. LiptakA. J. CaffreyR. HodákA. ŽUkauskasV.i. UmatovJ.p. CesarPh. HubertS. TorreC. Girard-carilloX. GarridoV. G. EgorovO.i. KochetovS. Söldner-remboldF. MamedovE. RukhadzeYu. ShitovV. BrudaninD. BoursetteG. EurinD. WatersJ. C. ThomasJ. K. SedgbeerS. I. KonovalovH. OhsumiF. PiquemalT. Le NobletE. ChauveauGuillaume LutterDominique DurandR. DvornickýC. CernaKevin LangPavel P. PovinecCh. MarquetC. MacolinoG. OliviéroC. HugonF. NovaA. MinottiA. PinR. L. FlackL. DawsonD. LalanneJ. L. ReyssB. MorganMichele CascellaP. LoaizaC. L. RiddleR. B. PahlkaL. SimardL. SimardD. DuchesneauA. RemotoR. SalazarX.r. LiuC.s. SuttonR. ArnoldV. I. TretyakA.a. SmolnikovG. SzklarzB. GuillonFedor ŠImkovicP. PřidalIgor NemchenokJ. MottV. V. TimkinVit VorobelA. SalamatinA. Basharina-freshvilleF. PerrotH. TedjditiS. BlondelI. Steklsubject
Particle physicsS029MTPhysics and Astronomy (miscellaneous)FOS: Physical sciencesElementary particle[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]nucl-exinvariance: Lorentz01 natural sciences7. Clean energyneutrinoless double beta decaydecay modesPhysics Particles & Fieldsdouble-beta decay: (0neutrino)SEARCHDouble beta decay0103 physical sciencesground stateNuclear Experiment (nucl-ex)010306 general physics0206 Quantum PhysicsEngineering (miscellaneous)Nuclear ExperimentMajoronS076H2NPhysicsScience & TechnologyHALF-LIFE010308 nuclear & particles physicsPhysicsMO-100High Energy Physics::PhenomenologyNuclear & Particles PhysicsMajoronviolation: Lorentznucleus: transitionSTATESstatisticsPhysical Sciences0202 Atomic Molecular Nuclear Particle and Plasma Physicsspectralelectron: energy spectrumHigh Energy Physics::ExperimentNeutrinoGround stateEnergy (signal processing)Radioactive decayLeptondescription
The full data set of the NEMO-3 experiment has been used to measure the half-life of the two-neutrino double beta decay of $^{100}$Mo to the ground state of $^{100}$Ru, $T_{1/2} = \left[ 6.81 \pm 0.01\,\left(\mbox{stat}\right) ^{+0.38}_{-0.40}\,\left(\mbox{syst}\right) \right] \times10^{18}$ y. The two-electron energy sum, single electron energy spectra and distribution of the angle between the electrons are presented with an unprecedented statistics of $5\times10^5$ events and a signal-to-background ratio of ~80. Clear evidence for the Single State Dominance model is found for this nuclear transition. Limits on Majoron emitting neutrinoless double beta decay modes with spectral indices of n=2,3,7, as well as constraints on Lorentz invariance violation and on the bosonic neutrino contribution to the two-neutrino double beta decay mode are obtained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-01 |