The SU(3)_C * SU(4)_W * U(1)_{B-L} Models with Left-Right Unification

Abstract

The left-right models provide an explanation for the parity asymmetry in the Standard Model (SM). To further understand the origin of the left-right symmetry, we study a partial unification model based on SU(4)_W*U(1)_{B-L} which can be broken down to the minimal left-right model either through the Higgs mechanism in four dimensions or through the five-dimensional orbifold gauge symmetry breaking with inner or outer automorphism. We scrutinize all these breaking mechanisms and find that for the orbifold breaking in five dimensions, the rank-reducing outer automorphism is better than the inner automorphism and can make the low energy theory free of the U(1)_Z anomaly. For the four-dimensional model with the Higgs mechanism, we study in detail both its structure and its typical phenomenology. It turns out that this four-dimensional scenario may predict some new phenomenology since the new mirror fermions (which are introduced in order to fill the SM fermions into SU(4)_W without anomaly) are preserved at low energy scale and mix with the SM fermions. We also examine the gauge coupling unification in each case, and discuss the possibility for unifying this partial unification group with the Pati-Salam group SU(4)_{PS} to realize a grand unification.

version in Nucl.Phys.B (discussions added)

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Cited by in corpus (9)

• Collider signatures of mirror fermions in the framework of Left Right Mirror Model
• Scalar dark matter explanation of the DAMPE data in the minimal Left-Right symmetric model
• Boson mass spectrum in $SU(4{)}_L\otimes U(1{)}_Y$ model with exotic electric charges
• Supersymmetry Breaking Scalar Masses and Trilinear Soft Terms From High-Dimensional Operators in E_6 SUSY GUT
• Neutral currents in a $SU(4{)}_L\otimes U(1{)}_Y$ gauge model with exotic electric charges
• Topological pseudodefects of a supersymmetric $SO(10)$ model and cosmology
• Low-Scale SU(4)_W Unification
• Realistic Flipped SU(5) from Orbifold SO(10)
• SU(7) Unification of SU(3)_C*SU(4)_W* U(1)_{B-L}