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Majoron emission in muon and tau decays revisited
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| Hirsch, Martin; Vicente Montesinos, Avelino; Meyer, Jochen; Porod, Werner | |||
| This document is a artículoDate2009 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/37388 |
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| 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. | |||
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Hirsch, Martin Vicente Montesinos, Avelino Meyer, J. Porod, Werner 2009 Majoron emission in muon and tau decays revisited Physical Review D 79 5 055023 |
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| http://dx.doi.org/10.1103/PhysRevD.79.055023 |
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22 - Física [3703]