6533b873fe1ef96bd12d4c0c

RESEARCH PRODUCT

Confined quarks and the neutrinoless ββ decay

Amand FaesslerS.b. KhadkikarJouni Suhonen

subject

QuarkPhysicsNuclear and High Energy PhysicsParticle physicsNuclear TheoryForm factor (quantum field theory)Nuclear physicsMAJORANADouble beta decayHigh Energy Physics::ExperimentColor confinementNeutrinoRandom phase approximationGround state

description

Abstract The half life of the neutrinoless double beta decay of 76Ge into the ground state of 76Se is calculated in a relativistic quark confinement model. The neutron-proton quasi-particle random phase approximation is used to evaluate the nuclear matrix elements involved in the decay amplitude. We avoid the closure approximation, but compare our results with this approximation. From the experimental half life we deduce an upper limit for the Majorana mass of the neutrino and estimate the right-handed contribution to the charged weak current.

https://doi.org/10.1016/0370-2693(90)90451-b