Probing the Seesaw and Gauge Mediation Scales with BR(μ\to eγ) and |U_{e3}|

Details Probing the Seesaw and Gauge Mediation Scales with BR(μ\to eγ) and |U_{e3}| Probing the Seesaw and Gauge Mediation Scales with BR(μ\to eγ) and |U_{e3}|

2011-11-24

arxiv.org/abs/1111.5751v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure, v2: References added

Scientific paper

The new MEG bound on BR(\mu\to e\gamma) provides the strongest upper bound on the scale of gauge mediation of supersymmetry breaking. If, in the future, this decay is observed by MEG, the mediation scale will become known to within one order of magnitude, and the seesaw scale will be constrained. In such a case, contributions from Planck mediated supersymmetry breaking are likely to be non-negligible, and an interpretation in terms of purely seesaw parameters will be impossible. The recent evidence for |U_{e3}|~0.15 further sharpens the predictions of gauge mediated supersymmetry breaking.

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