6533b873fe1ef96bd12d584d
RESEARCH PRODUCT
LHC sensitivity to singly charged scalars decaying into electrons and muons
Nicolás I. MileoJulien Alcaidesubject
PhysicsParticle physicsLarge Hadron ColliderMuon010308 nuclear & particles physicsElectroweak interactionScalar (mathematics)High Energy Physics::PhenomenologyYukawa potentialFOS: Physical sciencesFísicaFermion01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Pair production0103 physical sciencesNeutrino010306 general physicsdescription
Current LHC searches for nonsupersymmetric singly charged scalars, based on two-Higgs-doublet models, in general, focus the analysis in third-generation fermions in the final state. However, singly charged scalars in alternative extensions of the scalar sector involve Yukawa couplings not proportional to the mass of the fermions. Assuming the scalar decays into electrons and muons, it can manifest cleaner experimental signatures. In this paper, we suggest that a singly charged scalar singlet, with electroweak production, can start to be probed in the near future with dedicated search strategies. Depending on the strength of the Yukawa couplings, two independent scenarios are considered: direct pair production (small couplings) and single production via a virtual neutrino exchange (large couplings). We show that, up to a mass as large as 500 GeV, most of the parameter space could be excluded at the 95% C.L. in a high-luminosity phase of the LHC. Our results also apply to other frameworks, provided the singly charged scalar exhibits similar production patterns and dominant decay modes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-10-23 |