6533b7d1fe1ef96bd125d92f
RESEARCH PRODUCT
Higgs Pair Production as a Signal of Enhanced Yukawa Couplings
Marcela CarenaMarcela CarenaMartin BauerAdrian Carmonasubject
PhysicsParticle physicsLarge Hadron ColliderUnitarity010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyElectroweak interactionYukawa potentialFOS: Physical sciencesGeneral Physics and AstronomyFermion01 natural sciencesGluonHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Pair production0103 physical sciencesHiggs bosonHigh Energy Physics::Experiment010306 general physicsdescription
We present a non-trivial correlation between the enhancement of the Higgs-fermion couplings and the Higgs pair production cross section in two Higgs doublet models with a flavour symmetry. This symmetry suppresses flavour-changing neutral couplings of the Higgs boson and allows for a partial explanation of the hierarchy in the Yukawa sector. After taking into account the constraints from electroweak precision measurements, Higgs coupling strength measurements, and unitarity and perturbativity bounds, we identify an interesting region of parameter space leading to enhanced Yukawa couplings as well as enhanced di-Higgs gluon fusion production at the LHC reach. This effect is visible in both the resonant and non-resonant contributions to the Higgs pair production cross section. We encourage dedicated searches based on differential distributions as a novel way to indirectly probe enhanced Higgs couplings to light fermions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-07-12 | Physical Review Letters |