6533b7d7fe1ef96bd12683f4
RESEARCH PRODUCT
Neutrinoless double electron capture as a tool to measure the electron neutrino mass
Jose BernabeuA. De RújulaCecilia Jarlskogsubject
PhysicsNuclear and High Energy PhysicsElectron captureHigh Energy Physics::PhenomenologyFísicaWeak interactionNuclear physicsMAJORANAExcited stateAtomHigh Energy Physics::ExperimentAtomic physicsNeutrinoNuclear ExperimentNeutrino oscillationElectron neutrinoGeneral Theoretical Physicsdescription
Abstract A nucleus (Z, A) may capture two atomic electrons to become (Z − 2, A). For Majorana neutrinos this may occur with no neutrino emission, the process is a virtual mixing of the parent atom and the daughter atom with two electron holes. The process becomes real as the daughter atom de-excites. In some cases where the daughter nucleus is excited, the neutrinoless decay may be enhanced by its proximity to a virtual resonance. We identify the 112 Sn → 112 Cd transition as a good case. The no-neutrino lifetime for mν = 30 eV ranges from 1022 to 1027 years as a function of the insufficiently well determined distance to resonance. The signatures of the two- or no-neutrino modes are very different.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1983-01-01 | Nuclear Physics B |