D6 Family Symmetry and Cold Dark Matter at LHC

Abstract

We consider a non-supersymmetric extension of the standard model with a family symmetry based on D6 Z2 Z2, where one of Z2's is exactly conserved. This Z2 forbids the tree-level neutrino masses and simultaneously ensures the stability of cold dark matter candidates. From the assumption that cold dark matter is fermionic we can single out the D6 singlet right-handed neutrino as the best cold dark mater candidate. We find that an inert charged Higgs with a mass between 300 and 750 GeV decays mostly into an electron (or a positron) with a large missing energy, where the missing energy is carried away by the cold dark matter candidate. This will be a clean signal at LHC.

20 pages, 7 figures

References in corpus (11)

• Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
• Cold Dark Matter, Radiative Neutrino Mass, mu to e gamma, and Neutrinoless Double Beta Decay
• Common Origin of Neutrino Mass, Dark Matter, and Baryogenesis
• Emanations of Dark Matter: Muon Anomalous Magnetic Moment, Radiative Neutrino Mass, and Novel Leptogenesis at the TeV Scale
• Neutrino masses and CDM in a non-supersymmetric model
• Resolving Eight-Fold Neutrino Parameter Degeneracy by Two Identical Detectors with Different Baselines
• Model Predictions for Neutrino Oscillation Parameters
• Neutrino Mass and New Physics
• The discrete flavor symmetry D5
• Supersymmetric Model of Radiative Seesaw Majorana Neutrino Masses
• Deconstruction and Bilarge Neutrino Mixing

Cited by in corpus (15)

• Flavour physics of leptons and dipole moments
• From the trees to the forest: a review of radiative neutrino mass models
• The low-scale approach to neutrino masses
• Fermion Masses and Mixings from Dihedral Flavor Symmetries with Preserved Subgroups
• Radiative seesaw: Warm dark matter, collider and lepton flavour violating signals
• Anomaly Induced Dark Matter Decay and PAMELA/ATIC Experiments
• T(13) Flavor Symmetry and Decaying Dark Matter
• Flavor Changing Neutral Higgs Bosons in a Supersymmetric Extension based on a $Q_6$ Family Symmetry
• Non-Abelian Discrete Flavor Symmetries from T^2/Z_N Orbifolds
• Revelations of the E_6/U(1)_N Model: Two-Loop Neutrino Mass and Dark Matter
• Dark matter in the supersymmetric radiative seesaw model with an anomalous U(1) symmetry
• Signals of dark matter in a supersymmetric two dark matter model
• A Note on Embedding Nonabelian Finite Flavor Groups in Continuous Groups
• Variants of the Dark Left-Right Gauge Model: Neutrinos and Scotinos
• Family symmetries and the origin of fermion masses and mixings