6533b81ffe1ef96bd127739a

RESEARCH PRODUCT

Nuclear matrix elements of ββ decay from β-decay data

Jouni Suhonen

subject

PhysicsNuclear and High Energy PhysicsHalf-lifeProton–neutron interactionBeta decayDouble beta decayNuclear physicsDouble beta decayNuclear matrix elementsQuasiparticleQuasiparticle random-phase approximationBeta (velocity)High Energy Physics::ExperimentNeutrinoRandom phase approximationNuclear ExperimentEigenvalues and eigenvectors

description

Abstract The evaluation of the nuclear matrix elements (NME) of the two-neutrino double beta ( 2 ν β β ) decay and neutrinoless double beta ( 0 ν β β ) decay using the proton–neutron quasiparticle random-phase approximation (pnQRPA) is addressed. In particular, the extraction of a proper value of the proton–neutron particle–particle interaction parameter, g pp , of this theory is analyzed in detail. Evidence is shown, that it can be misleading to use the experimental half-life of the 2 ν β β decay to extract a value for g pp . Rather, arguments are given in favour of using the available data on single beta decay for this purpose.

yearjournalcountryeditionlanguage
2005-02-01Physics Letters B
10.1016/j.physletb.2004.12.048http://dx.doi.org/10.1016/j.physletb.2004.12.048