6533b7cffe1ef96bd12585bd
RESEARCH PRODUCT
New leptoquark mechanism of neutrinoless double beta decay
Hans Volker Klapdor-kleingrothausM. HirschS. G. Kovalenkosubject
QuarkPhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::PhenomenologyFísicaFOS: Physical sciencesLepton numberHelicityNuclear physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Double beta decayLeptoquarkBeta (velocity)High Energy Physics::ExperimentNeutrinoLeptondescription
A new mechanism for neutrinoless double beta ($\znbb$) decay based on leptoquark exchange is discussed. Due to the specific helicity structure of the effective four-fermion interaction this contribution is strongly enhanced compared to the well-known mass mechanism of $\znbb$ decay. As a result the corresponding leptoquark parameters are severely constrained from non-observation of $\znbb$-decay. These constraints are more stringent than those derived from other experiments.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-03-04 |