Majoron emission in muon and tau decays revisited
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Majoron emission in muon and tau decays revisited

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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

Este documento está disponible también en : http://hdl.handle.net/10550/37388
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.

    Hirsch, Martin Vicente Montesinos, Avelino Meyer, J. Porod, Werner 2009 Majoron emission in muon and tau decays revisited Physical Review D 79 5 055023
http://dx.doi.org/10.1103/PhysRevD.79.055023

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