6533b829fe1ef96bd128ae7d
RESEARCH PRODUCT
126 GeV Higgs boson in the top-seesaw model
Kimmo TuominenKimmo TuominenKimmo TuominenHidenori S. Fukanosubject
PhysicsQuarkQuantum chromodynamicsNuclear and High Energy PhysicsParticle physicsLarge Hadron Colliderta114Electroweak interactionHigh Energy Physics::PhenomenologyFOS: Physical sciencesBottom quarkStandard ModelHigh Energy Physics - ExperimentHigh Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)Higgs bosonEffective field theoryHigh Energy Physics::Experimentdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-06-02 | Journal of High Energy Physics |