6533b853fe1ef96bd12ac28f
RESEARCH PRODUCT
Probing the Type I Seesaw mechanism with displaced vertices at the LHC
Marta LosadaAlexander Moreno BriceñoA. M. GagoPilar HernándezJoel Jones-perezJoel Jones-perezsubject
PhysicsParticle physicsLarge Hadron ColliderPhysics and Astronomy (miscellaneous)Physics beyond the Standard ModelHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaType (model theory)Nuclear physicsHigh Energy Physics - PhenomenologySeesaw mechanismHigh Energy Physics - Phenomenology (hep-ph)Seesaw molecular geometryPseudorapidityHiggs bosonHigh Energy Physics::ExperimentNeutrinoEngineering (miscellaneous)description
The observation of Higgs decays into heavy neutrinos would be strong evidence for new physics associated to neutrino masses. In this work we propose a search for such decays within the Type I seesaw model in the few-GeV mass range via displaced vertices. Using 300 fb$^{-1}$ of integrated luminosity, at 13 TeV, we explore the region of parameter space where such decays are measurable. We show that, after imposing pseudorapidity cuts, there still exists a region where the number of events is larger than $\mathcal{O}(10)$. We also find that conventional triggers can greatly limit the sensitivity of our signal, so we display several relevant kinematical distributions which might aid in the optimization of a dedicated trigger selection.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-10-01 | The European Physical Journal C |