Two-loop neutrino masses with large R-parity violating interactions in supersymmetry

Details Two-loop neutrino masses with large R-parity violating interactions in supersymmetry Two-loop neutrino masses with large R-parity violating interactions in supersymmetry

2008-08-11

arxiv.org/abs/0808.1523v2

JHEP 0812:100,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revised version, 25 pages, 16 figures

Scientific paper

10.1088/1126-6708/2008/12/100

We attempt to reconcile large trilinear R-parity violating interactions in a supersymmetric (SUSY) theory with the observed pattern of neutrino masses and mixing. We show that, with a restricted number of such interaction terms with the $\lambda'$-type couplings in the range (0.1-1.0), it is possible to forbid one-loop contributions to the neutrino mass matrix. This is illustrated with the help of a `working example' where an econnomic choice of SUSY parameters is made, with three non-vanishing and `large' R-parity violating terms in the superpotential. The two-loop contributions in such a case can not only generate the masses in the requisite order but can also lead us to specific allowed regions of the parameter space.

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