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Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005fuin.conf..230m&link_type=abstract
FUNDAMENTAL INTERACTIONS. Proceedings of the Nineteenth Lake Louise Winter Institute. Held 15-21 February 2004 in Lake Louise, A
Other
Scientific paper
The see-saw mechanism of neutrino mass generation, when incorporated in supersymmetric theories with supergravity mediated supersymmetry breaking, results in low-energy lepton-flavour violation arising from the soft supersymmetry breaking slepton masses. The parameter space of supergravity theories with conserved R-parity is severely constrained by the requirement that the LSP provide cold dark matter with a relic density in the range indicated by the recent WMAP measurements, as well as by laboratory constraints. We calculate the μ → eγ branching ratio for the constrained minimal supersymmetric standard model, over the range of parameters consistent with WMAP and laboratory constraints, in families of see-saw model parameterizations which fit the low energy neutrino measurements. We find that over much of the range of see-saw models, for supersymmetry parameters consistent with WMAP and laboratory bounds, the resulting predicted rates for μ → eγ (and other charged lepton flavour violating processes) are within current experimental limits, but that these rates should be detectable with the next generation of lepton-flavour violation experiments.
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