6533b7d6fe1ef96bd1265c32
RESEARCH PRODUCT
Massive neutrinos and right-handed weak currents in double beta decay.
Jouni SuhonenE. Hammarensubject
PhysicsNuclear physicsMassless particleNuclear and High Energy PhysicsParticle physicsIsotopes of germaniumDouble beta decayHigh Energy Physics::ExperimentElementary particleNeutrinoBeta decayRadioactive decayLeptondescription
The contributions of right-handed weak currents in neutrinoless double beta decay are studied taking explicitly into account the mass corrections to the intermediate neutrino propagator. Due to these corrections the right-handed currents become effective even if all neutrinos are light ([ital m][sub [nu]][gt]10 MeV). Explicit expressions for the neutrino-momentum integrals and the decay half-life are derived. As an example two neutrino-mass scenarios containing the hypothetical 17-keV neutrino are discussed. The experimental half-life of the [sup 76]Ge[r arrow][sup 76]Se decay is used to obtain an upper limit for a new kind of effective right-handed coupling within the two scenarios.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-02-01 | Physical review. C, Nuclear physics |