Deviations from tri-bimaximal mixing

Details Deviations from tri-bimaximal mixing Deviations from tri-bimaximal mixing

2009-01-02

arxiv.org/abs/0901.0248v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages. Talk given at NOW2008, Conca Specchiulla, Otranto, Italy, September 6-13, 2008

Scientific paper

10.1016/j.nuclphysbps.2009.02.07

Current data indicates that lepton mixing is very close to the tri-bimaximal mixing scenario. In general, however, one expects deviations from any mixing scenario. We discuss several examples to perturb tri-bimaximal mixing, namely soft breaking, renormalization group running and charged lepton corrections. We also present a convenient parametrization of the PMNS matrix which takes advantage of the apparently close to tri-bimaximal mixing pattern. Finally, it is discussed how to generate values of U_{e3} which correspond to the recently found hint for non-zero U_{e3}.

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