126 GeV Higgs boson in the top-seesaw model

Abstract

We consider a model of dynamical electroweak symmetry breaking built on the idea of top-seesaw mechanism. The model features a fourth generation of vector-like QCD quarks responsible for the origin of the top-seesaw mechanism and leading to the natural explanation of the large splitting between the top and bottom quark masses. Motivated by the LHC data on the couplings of the Higgs boson, we include the entire third generation of Standard Model matter fields into the model. We determine the low energy effective theory and the resulting low energy spectrum of states, and constrain the model parameters with constraints from the precision electroweak data and from the requirement of a light scalar state with quantum numbers of the Standard Model Higgs boson. Finally, we perform a global fit of the model parameters to the LHC Higgs data and show that the model is equally viable as the Standard Model itself, and predicts new states accessible at the LHC.

31 pages, 10 figures, references added

References in corpus (8)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collision data at sqrt(s) = 7 TeV with ATLAS
• Search for the standard model Higgs boson decaying to a W pair in the fully leptonic final state in pp collisions at sqrt(s) = 7 TeV
• Search for the standard model Higgs boson in the decay channel H to ZZ to 4 leptons in pp collisions at sqrt(s) = 7 TeV
• New Higgs interactions and recent data from the LHC and the Tevatron
• LHC Higgs Signatures from Topflavor Seesaw Mechanism
• Search for the Standard Model Higgs boson in the H -> WW(*) -> l nu l nu decay mode with 4.7 /fb of ATLAS data at sqrt(s) = 7 TeV

Cited by in corpus (8)

• Baryogenesis in the two doublet and inert singlet extension of the Standard Model
• A Composite Higgs Model with Minimal Fine-Tuning I.~The Large-N and Weak-technicolor Limit
• The Light Composite Higgs in Strong Extended Technicolor
• Vacuum Alignment of the Top-Mode Pseudo-Nambu-Goldstone Boson Higgs Model
• 125 GeV Higgs from a chiral-techniquark model
• Dynamical Origin of the Electroweak Scale and the 125 GeV Scalar
• Higgs mass from compositeness at a multi-TeV scale
• Charged Higgs Pair Production at the LHC as a Probe of the Top-Seesaw Assisted Technicolor Models