Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-13
Phys. Rev. D 84, 113010 (2011)
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 2 figures. v2:Minor changes (including a slight change in the title). Journal version
Scientific paper
10.1103/PhysRevD.84.113010
In models where lepton number is considered to be a spontaneously-broken global symmetry a massless Goldstone boson, the majoron (J), appears. We describe a procedure to explore the muon-electron-majoron coupling using the results from mu-e conversion search experiments. To accomplish that, we determine how the energy spectrum of the muon decay into an electron and a majoron is modified by binding effects in a muonic atom. We find that the future mu-to-e conversion experiments may be able to produce bounds on the mu->eJ rate which are comparable with the present ones from direct searches.
Bryman Douglas
Czarnecki Andrzej
Dowling Matthew
Tormo Xavier Garcia i.
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