Abstract
We study neutrino physics in the context of a supersymmetric model where a continuous R-symmetry is identified with the total Lepton Number and one sneutrino can thus play the role of the down type Higgs. We show that R-breaking effects communicated to the visible sector by Anomaly Mediation can reproduce neutrino masses and mixing solely via radiative contributions, without requiring any additional degree of freedom. In particular, a relatively large reactor angle (as recently observed by the Daya Bay collaboration) can be accommodated in ample regions of the parameter space. On the contrary, if the R-breaking is communicated to the visible sector by gravitational effects at the Planck scale, additional particles are necessary to accommodate neutrino data.
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ArXiv ePrint: 1203.5340v2
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Bertuzzo, E., Frugiuele, C. Fitting neutrino physics with a U(1) R lepton number. J. High Energ. Phys. 2012, 100 (2012). https://doi.org/10.1007/JHEP05(2012)100
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DOI: https://doi.org/10.1007/JHEP05(2012)100