One-loop contribution to the neutrino mass matrix in NMSSM with right-handed neutrinos and tri-bimaximal mixing

Abstract

Neutrino mass patterns and mixing have been studied in the context of next-to-minimal supersymmetric standard model (NMSSM) with three gauge singlet neutrino superfields. We consider the case with the assumption of R-parity conservation. The vacuum expectation value of the singlet scalar field $S$ of NMSSM induces the Majorana masses for the right-handed neutrinos as well as the usual $\mu$-term. The contributions to the light neutrino mass matrix at the tree level as well as one-loop level are considered, consistent with the tri-bimaximal pattern of neutrino mixing. Light neutrino masses arise at the tree level through a TeV scale seesaw mechanism involving the right-handed neutrinos. Although all the three light neutrinos acquire non-zero masses at the tree-level, we show that the one-loop contributions can be comparable in size under certain conditions.

14 pages, 7 figures

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• Right Sneutrino Dark Matter and a Monochromatic Photon Line
• A possible connection between neutrino mass generation and the lightness of a NMSSM pseudoscalar
• Comparison of neutralino and sneutrino dark matter in a model with spontaneous CP violation
• One Right-handed Neutrino to Generate Complete Neutrino Mass Spectrum in the Framework of NMSSM
• Soft leptogenesis in the NMSSM with a singlet right-handed neutrino superfield