The Family SU(2)_l x SU(2)_h x U(1) Model

Abstract

We consider extension of the standard model $SU(2{)}_l\times SU(2{)}_h\times U(1)$ where the first two families of quarks and leptons transform according to the $SU(2{)}_l$ group and the third family according to the $SU(2{)}_h$ group. In this approach, the largeness of top-quark mass is associated with the large vacuum expectation value of the corresponding Higgs field. The model predicts almost degenerate heavy $W^{\prime }$ and $Z^{\prime }$ bosons with non-universal couplings, and extra Higgs bosons. We present in detail the symmetry breaking mechanism, and carry out the subsequent phenomenology of the gauge sector. We compare the model with electroweak precision data, and conclude that the extra gauge bosons and the Higgs bosons whose masses lie in the TeV range, can be discovered at the LHC.

Latex 18 pages. No figure. Some references added. Version appeared in PRD

References in corpus (3)

• Baryogenesis from an Earlier Phase Transition
• Proton Lifetime and Baryon Number Violating Signatures at the LHC in Gauge Extended Models
• Ansatz for small FCNC with a non-universal $Z^{\prime }$

Cited by in corpus (24)

• Non-abelian gauge extensions for B-decay anomalies
• Lepton universality violation and right-handed currents in $b\to c\tau \nu$
• A $Z^{\prime }$ Model for $b\to s\ell \bar{\ell }$ Flavour Anomalies
• Explaining $b\to s{\ell }^{+}{\ell }^{-}$ and the Cabibbo Angle Anomaly with a Vector Triplet
• Search for a W' boson decaying to a $\tau$ lepton and a neutrino in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• A search for high-mass resonances decaying to tau+tau- in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Search for High-Mass Resonances Decaying to $\tau \nu$ in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector
• D0 Dimuon Asymmetry in $B_s-{\bar{B}}_s$ Mixing and Constraints on New Physics
• Implications for new physics from a novel puzzle in ${\bar{B}}_{(s)}^0\to D_{(s)}^{(\ast )+}\{{\pi }^{-},K^{-}\}$ decays
• Search for W' decaying to tau lepton and neutrino in proton-proton collisions at sqrt(s) = 8 TeV
• Top Quark Polarization As A Probe of Models with Extra Gauge Bosons
• Tri-unification: a separate $SU(5)$ for each fermion family
• Light Stops in a minimal U(1)x extension of the MSSM
• Lepton flavour violation in a nonuniversal gauge interaction model
• Yukawa sector for LFV in $h\to \mu \tau$ and CP violation in $h\to \tau \tau$
• New gauge boson Z' and lepton flavor violating decays and production of vector mesons
• Early LHC bound on W' boson in the nonuniversal gauge interaction model
• Constraints and Implications on Higgs FCNC Couplings from Precision Measurement of $B_s\to {\mu }^{+}{\mu }^{-}$ Decay
• Direct search for heavy gauge bosons at the LHC in the nonuniversal SU(2) model
• Search for high-mass resonances in final states with a $\tau$-lepton and missing transverse momentum with the ATLAS detector
• Third-generation-philic Hidden Naturalness
• Observing nonstandard $W^{\prime }$ and $Z^{\prime }$ through the third generation and Higgs lens
• Study of same-sign W boson scattering and anomalous couplings in events with one tau lepton from pp collisions at $\sqrt{s}$ = 13 TeV
• Baryon and lepton number violating effective operators in a non-universal extension of the Standard Model