Double-beta-decay mass constraints on 17-keV neutrinos

Details Double-beta-decay mass constraints on 17-keV neutrinos Double-beta-decay mass constraints on 17-keV neutrinos

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..67.2431h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 67, Oct. 28, 1991, p. 2431-2434. Research supported by DOE.

Astronomy and Astrophysics

Astrophysics

5

Beta Particles, Electron Decay Rate, Neutrinos, Particle Mass, Nuclear Astrophysics, Supernova 1987A, Weak-Interaction And Lepton Aspects, Quark And Lepton Masses And Mixing

Scientific paper

Attempts to reconcile a 17-keV neutrino with constraints from astrophysics and double beta decay have led to model Majorana neutrino mass matrices with vanishing (or nearly vanishing) electron-electron components. A simple parametrization is presented of the higher-order mass effects on the intermediate-state propagator through which 0neutrino beta-beta decay can still occur. For light-mass eigenstates, the 0neutrino and 2neutrino rates are proportional, with the ratio depending on a weighted sum over mass eigenstates. Thus, model 0neutrino beta-beta decay rates can be predicted with confidence.

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