Majoron emission in muon and tau decays revisited
Journal Article
·
· Physical Review. D, Particles Fields
In models where the breaking of lepton number is spontaneous a massless Goldstone boson, the Majoron (J), appears. We calculate the theoretically allowed range for the branching ratios of Majoron-emitting charged lepton decays, such as Br({mu}{yields}eJ) and Br({mu}{yields}eJ{gamma}), in a supersymmetric model with spontaneous breaking of R-parity. Br({mu}{yields}eJ) is maximal in the same region of parameter space for which the lightest neutralino decays mainly invisibly. A measurement of Br({mu}{yields}eJ) thus potentially provides information on R-parity violation complementary to accelerator searches. We also briefly discuss existing bounds and prospects for future improvements on the Majoron coupling to charged leptons.
- OSTI ID:
- 21260117
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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