2017/10/16 by Julien Alcaide, M. Chala, Mikael Chala +1
Physics and Astronomy · #Astrophysics #Dark Matter and Cosmic Phenomena #Electron #Higgs boson #Large Hadron Collider #Lepton #Luminosity #Missing energy #Neutrino #Neutrino Physics Research #Nuclear physics #Observable #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Sign (mathematics) #Standard Model (mathematical formulation) #Statistics #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2018.02.001
14 pages, 15 figures
arxiv created 2017/10/16 · openalex created_date 2017/11/10 · openalex publication_date 2018/02/05 · arxiv updated 2018/02/07 · openalex updated_date 2026/08/05
Contrary to the see-saw models, extended Higgs sectors leading to radiatively-induced neutrino masses do require the extra particles to be at the TeV scale. However, these new states have often exotic decays, to which experimental LHC searches performed so far, focused on scalars decaying into pairs of same-sign leptons, are not sensitive. In this paper we show that their experimental signatures can start to be tested with current LHC data if dedicated multi-region analyses correlating different observables are used. We also provide high-accuracy estimations of the complicated Standard Model backgrounds involved. For the case of the Zee–Babu model, we show that regions not yet constrained by neutrino data and low-energy experiments can be already probed, while most of the parameter space could be excluded at the 95% C.L. in a high-luminosity phase of the LHC.