A new mechanism of neutrino mass generation in the NMSSM with broken lepton number

Asmaa Abada; Gautam Bhattacharyya; Gregory Moreau

doi:10.1016/j.physletb.2006.09.061

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arXiv · hep-ph/0606179

A new mechanism of neutrino mass generation in the NMSSM with broken lepton number

Asmaa Abada·Gautam Bhattacharyya·Gregory Moreau

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Abstract

In the Minimal Supersymmetric Standard Model with bilinear R-parity violation, only one neutrino eigenstate acquires a mass at tree level, consequently experimental data on neutrinos cannot be accommodated at tree level. We show that in the Next-to-Minimal extension, where a gauge singlet superfield is added to primarily address the so-called $μ$-problem, it is possible to generate two massive neutrino states at tree level. Hence, the global three-flavour neutrino data can be reproduced at tree level, without appealing to loop dynamics which is vulnerable to model-dependent uncertainties. We give analytical expressions for the neutrino mass eigenvalues and present examples of realistic parameter choices.

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Asmaa Abada, Gautam Bhattacharyya, Gregory Moreau. 2006-10-05. A new mechanism of neutrino mass generation in the NMSSM with broken lepton number. https://doi.org/10.1016/j.physletb.2006.09.061

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