Flavour Universal Dynamical Electroweak Symmetry Breaking

Abstract

The top condensate see-saw mechanism of Dobrescu and Hill allows electroweak symmetry to be broken while deferring the problem of flavour to an electroweak singlet, massive sector. We provide an extended version of the singlet sector that naturally accommodates realistic masses for all the standard model fermions, which play an equal role in breaking electroweak symmetry. The models result in a relatively light composite Higgs sector with masses typically in the range of (400-700)~GeV. In more complete models the dynamics will presumably be driven by a broken gauged family or flavour symmetry group. As an example of the higher scale dynamics a fully dynamical model of the quark sector with a GIM mechanism is presented, based on an earlier top condensation model of King using broken family gauge symmetry interactions (that model was itself based on a technicolour model of Georgi). The crucial extra ingredient is a reinterpretation of the condensates that form when several gauge groups become strong close to the same scale. A related technicolour model of Randall which naturally includes the leptons too may also be adapted to this scenario. We discuss the low energy constraints on the massive gauge bosons and scalars of these models as well as their phenomenology at the TeV scale.

22 pages, 3 figs

References in corpus (4)

• Top Quark Seesaw Theory of Electroweak Symmetry Breaking
• Electroweak Symmetry Breaking via Top Condensation Seesaw
• A Heavy Top Quark From Flavor-Universal Colorons
• Model-independent Constraints on Topcolor from $R_b$

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• Non-universal gauge bosons $Z^{\prime }$ and lepton flavor-violation tau decays
• Weak-Singlet Fermions: Models and Constraints
• Minimal Walking Technicolour, the Top Mass and Precision Electroweak Measurements
• Triviality and the Precision Bound on the Higgs Mass
• TeV resonances in top physics at the LHC
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• Production of the top-pions at the THERA collider based $\gamma p$ collisions
• Lepton flavor violation decays ${\tau }^{-}\to {\mu }^{-}{P}_1{P}_2$ in the topcolor-assisted technicolor model and the littlest Higgs model with $T$ parity
• The bound on the mass of the new gauge boson $Z^{\prime }$ from the process $\mu ⟶3e$
• Non-universal gauge boson $Z^{\prime }$ and the spin correlation of top quark pair production at $e^{-}{e}^{+}$ colliders
• Detecting the neutral top-pion at future muon colliders
• Lepton flavor violating semileptonic $\tau$ decays $\tau \to lP(V)$ in a topcolor scenario
• Neutral top-pion and lepton flavor violating processes
• Detecting top-Higgs at high energy $e^{+}{e}^{-}$ colliders
• Top-quark couplings to TeV resonances at future lepton colliders
• Bounds on Flavor Gauge Bosons from Precision Electroweak Data
• The neutral top-pion and the lepton flavor violating $Z$ decays $Z\to l_i{l}_j$
• Flavor Gauge Bosons at the Tevatron
• QCD corrections to massive color-octet vector boson pair production
• Probing topcolor-assisted technicolor models from like-sign tau pair production in e gamma collisions
• Rare decays B\to Mν\barν in the TC2 model and the LHT model
• Lepton flavor violating processes $l_i⟶l_j{\nu }_l{\bar{\nu }}_l$ in topcolor-assisted technicolor models
• Unscrambling New Models for Higher-Energy Physics