Majorons without Majorana masses and neutrinoless double beta decay

Burgess, C.P.; Cline, James M.

doi:10.1016/0370-2693(93)91720-8

Majorons without Majorana masses and neutrinoless double beta decay

C.P. Burgess
(
- McGill U.
)
,
James M. Cline
(
- McGill U.
)

Aug, 1992

16 pages

Published in:

Phys.Lett.B 298 (1993) 141-148

e-Print:

hep-ph/9209299 [hep-ph]

DOI:

10.1016/0370-2693(93)91720-8

Report number:

MCGILL-92-22

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Abstract:

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.

Note:

Revised version

nucleus: semileptonic decay
semileptonic decay: nucleus
final state: (0neutrino)
(0neutrino): final state
postulated particle: Majoron
lepton number: -2
energy spectrum: (electron)
(electron): energy spectrum
neutrino: sterile
numerical calculations

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Figures(0)

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