LHC sensitivity to singly-charged scalars decaying into electrons and muons

Understand

Current LHC searches for non-supersymmetric singly-charged scalars, based on Two-Higgs-Doublet models, in general focus the analysis on 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.