Fast Decaying Neutrinos and Observable Flavor Violation in a New Class of Majoron Models
- ,
- J.W.F. Valle()
- CERN and
- Valencia U.
7 pages
Published in:
- Phys.Lett.B 216 (1989) 360-366
- Published: 1989
Report number:
- CERN-TH-5170-88,
- FTUV-10-88
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Abstract: (Elsevier)
Neutrinos can have any mass (allowed by laboratory limits) without violating limits from cosmology, astrophysics or laboratory searches for lepton violation phenomena. We present a simple extension of the standard theory where neutrinos decay dominantly into invisible modes involving a majoron associated with the spontaneous violation of B - L symmetry due to physics at or below the electroweak scale. Measurable branchings for lepton-flavour-violating processes such as μ →e+ γ , and for non-standard Z decays e.g. Z → e + τ , and Z →μ+ τ (plus their conjugates) at LEP are possible without unnatural fine-tuning of the parameters. Lepton-number-violating effects such as neutrinoless ββ decay may also be present at a measurable level.- NEUTRINO: DECAY MODES
- DECAY MODES: NEUTRINO
- NEUTRINO: MASS
- MASS: NEUTRINO
- POSTULATED PARTICLE: MAJORON
- B-L NUMBER: SPONTANEOUSLY BROKEN
- MUON: RADIATIVE DECAY
- RADIATIVE DECAY: MUON
- Z0: LEPTONIC DECAY
- LEPTONIC DECAY: Z0
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