Radiative neutrino mass, dark matter and electroweak baryogenesis from the supersymmetric gauge theory with confinement

Shinya Kanemura; Naoki Machida; Tetsuo Shindou

doi:10.1016/j.physletb.2014.09.013

paper

Radiative neutrino mass, dark matter and electroweak baryogenesis from the supersymmetric gauge theory with confinement

arXiv:1405.5834 · doi:10.1016/j.physletb.2014.09.013

Abstract

We propose a simple model to explain neutrino mass, dark matter and baryogenesis based on the extended Higgs sector which appears in the low-energy effective theory of a supersymmetric gauge theory with confinement. We here consider the SU(2) $_{H}$ gauge symmetry with three flavours of fundamental representations which are charged under the standard SU(3) $_{C} \times$ SU(2) $_{L} \times$ U(1) $_{Y}$ symmetry and a new discrete $Z_{2}$ symmetry. We also introduce $Z_{2}$ -odd right-handed neutrino superfields in addition to the standard model matter superfields. The low-energy effective theory below the confinement scale contains the Higgs sector with fifteen composite superfields, some of which are $Z_{2}$ -odd. When the confinement scale is of the order of ten TeV, electroweak phase transition can be sufficiently of first order, which is required for successful electroweak baryogenesis. The lightest $Z_{2}$ -odd particle can be a new candidate for dark matter, in addition to the lightest $R$ -parity odd particle. Neutrino masses and mixings can be explained by the quantum effects of $Z_{2}$ -odd fields via the one-loop and three-loop diagrams. We find a benchmark scenario of the model, where all the constraints from the current neutrino, dark matter, lepton flavour violation and LHC data are satisfied. Predictions of the model are shortly discussed.

arXiv comment19 pages, 5 figures

Radiative neutrino mass, dark matter and electroweak baryogenesis from the supersymmetric gauge theory with confinement

Abstract

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