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Título: | Majoron emission in muon and tau decays revisited |
Autor: | Hirsch, Martin CSIC ORCID; Meyer, J.; Porod, Werner CSIC; Vicente, Avelino CSIC ORCID | Fecha de publicación: | 1-abr-2009 | Editor: | American Physical Society | Citación: | Phys.Rev.D79:055023,200 | Resumen: | 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 -> eJ) and Br(mu -> eJ gamma), in a supersymmetric model with spontaneous breaking of R-parity. Br(mu -> eJ) is maximal in the same region of parameter space for which the lightest neutralino decays mainly invisibly. A measurement of Br(mu -> 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. | Descripción: | 9 pages, 4 figures.-- ISI article identifier:000264762400078.-- ArXiv pre-print avaible at: http://arxiv.org/abs/0902.0525 | Versión del editor: | hhtp://dx.doi.org/10.1103/PhysRevD.79.055023 | URI: | http://hdl.handle.net/10261/15957 | DOI: | 10.1103/PhysRevD.79.055023 | ISSN: | 1550-7998 |
Aparece en las colecciones: | (IFIC) Artículos |
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