An Exceptional Electroweak Model

Abstract

We consider a gauge extension of the electroweak sector of the Standard Model based on the group G_2 x SU(2)x U(1). The exceptional group G_2 is the smallest rank two group that contains SU(3) as a subgroup; the SU(3) prediction sin^2 theta_w=1/4 follows approximately in this model if the couplings of the additional SU(2) and U(1) factors are sufficiently large. We study the symmetry breaking sector of the model, the bounds from precision electroweak constraints and the mass spectrum of exotic gauge bosons that may be produced at future colliders. We also discuss an SU(3) electroweak model in which a vector-like sector is included explicitly to facilitate the decays of otherwise stable exotic states. The models considered here represent plausible extensions of the minimal SU(3) electroweak model with potentially distinctive TeV-scale phenomenology.

29 pages RevTeX, 7 eps figures. v2: minor revisions

References in corpus (11)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• TeV scale 5D $SU(3{)}_W$ unification and the fixed point anomaly cancellation with chiral split multiplets
• Standard Model Higgs from Higher Dimensional Gauge Fields
• The Weak Mixing Angle from an SU(3) Symmetry at a TeV
• Unification of Weak and Hypercharge Interactions at the TeV Scale
• Electroweak Unification into a Five-Dimensional SU(3) at a TeV
• Neutrino Masses in a 5D $SU(3{)}_W$ TeV Unification Model
• Weak Mixing Angle and the SU(3)_C times SU(3) Model on M^4 times S^1/(Z_2 times Z_2')
• Constraints on the SU(3) Electroweak Model
• Phenomenology of a 5D Orbifold $SU(3{)}_W$ Unification model

Cited by in corpus (4)

• Generations: Three Prints, in Colour
• An Exceptional G(2) Extension of the Standard Model from the Correspondence with Cayley-Dickson Algebras Automorphism Groups
• The Resurgence of the G(2) Group for the Strong Sector and the Emergence of Dark Matter
• The Structure Constants of the Exceptional Lie Algebra ${\mathfrak{g}}_2$ in the Cartan-Weyl Basis