6533b7defe1ef96bd12768b6
RESEARCH PRODUCT
A 125 GeV composite Higgs boson versus flavour and electroweak precision tests
Riccardo BarbieriAndrea TesiDavid M. StraubDario ButtazzoFilippo Salasubject
Nuclear and High Energy PhysicsParticle physicsHiggs bosonHigh Energy Physics::LatticeFlavourHigh Energy Physics. PhenomenologyFOS: Physical sciences01 natural sciencesHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesHeavy Quark Physics010306 general physicsPhysicsCouplingLarge Hadron Collider010308 nuclear & particles physicsPhysicsElectroweak interactionHigh Energy Physics::PhenomenologyHiggs physicstechnicolor and composite modelsSymmetry (physics)Settore FIS/02 - Fisica Teorica Modelli e Metodi MatematiciHigh Energy Physics - PhenomenologyCP violationComposite fermionBeyond Standard ModelHiggs bosonHigh Energy Physics::ExperimentHeavy Quark Physicdescription
A composite Higgs boson of 125 GeV mass, only mildly fine-tuned, requires top partners with a semi-perturbative coupling and a mass not greater than about a TeV. We analyze the strong constraints on such picture arising from flavour and electroweak precision tests in models of partial compositeness. We consider different representations for the composite fermions and compare the case of an anarchic flavour structure to models with a U(3)^3 and U(2)^3 flavour symmetry. Although non trivially, some models emerge that look capable of accommodating a 125 GeV Higgs boson with top partners in an interesting mass range for discovery at the LHC as well as associated flavour signals.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-05-01 |