6533b872fe1ef96bd12d36e6
RESEARCH PRODUCT
Mean-field effects on neutrinoless double beta decay
M. AunolaJouni Suhonensubject
Nuclear physicsPhysicsNuclear and High Energy PhysicsParticle physicsAtomic orbitalMean field theoryDouble beta decayNuclear TheoryQuasiparticleNeutronNeutrinoRandom phase approximationParametrizationdescription
Abstract Mean-field effects on the nuclear matrix elements involved in the neutrinoless double beta (0νββ) decay of several double-electron and double-positron emitters have been studied within the framework of the relativistic quark-confinement model and the quasiparticle random-phase approximation. The single-particle energies of the model space have been generated both by using the standard Woods-Saxon parametrization of the mean field and adjusting the quasiparticle spectra with the data from neutron- and proton-odd nuclei. The 0νββ rates are found to be much less affected by the energies of the mean-field orbitals than the rates of the two-neutrino double beta decay. The present study suggests that the extracted effective neutrino masses vary within a factor of two when using different realistic single-particle bases in the calculations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-11-01 | Nuclear Physics A |