6533b874fe1ef96bd12d653c

RESEARCH PRODUCT

Quenching of gA and its impact in double beta decay

Francesco IachelloJenni-mari KotilaJose Barea

subject

High Energy Physics::Phenomenologyquenchingdouble beta decayNuclear Experiment

description

The theory of double beta decay is briefly reviewed. The most recent (2015) results for 0νβ −β − nuclear matrix elements in the interacting boson model (IBM-2) with light and heavy neutrino exchange are given for all nuclei of interest from 48Ca to 238U. The question of quenching of the axial vector coupling constant gA in nuclei is discussed. Possible additional scenarios, such as Majoron emission, and mechanisms, such as sterile neutrino exchanges, are also discussed. nonPeerReviewed

http://urn.fi/URN:NBN:fi:jyu-201604142198