Majorons Without Majorana Masses and Neutrinoless Double Beta Decay

Details Majorons Without Majorana Masses and Neutrinoless Double Beta Decay Majorons Without Majorana Masses and Neutrinoless Double Beta Decay

1992-09-30

arxiv.org/abs/hep-ph/9209299v1

Phys.Lett. B298 (1993) 141-148

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 1 figure (not included), McGill/92-22

Scientific paper

10.1016/0370-2693(93)91720-8

We explain excess events near the endpoints of the double beta decay spectra of several elements, using the neutrinoless emission of massless Goldstone bosons. Models with scalars carrying lepton number $-2$ are proposed for this purpose so that ordinary neutrinoless double beta decay is forbidden, and we can raise the scale of global symmetry breaking above the 10 keV scale needed for observable emission of conventional Majorons in double beta decay. The electron spectrum has a different shape, and the rate depends on different nuclear matrix elements, than for the emission of ordinary Majorons.

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