2018/07/31 by Dario Buttazzo, Diego Redigolo, Filippo Sala +1 · 1 citation
Physics and Astronomy · #Boson #Dark Matter and Cosmic Phenomena #Electron #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Mixing (physics) #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Scalar (mathematics) #Vector boson #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep11(2018)144
34 pages, 16 figures, 2 tables. v2: discussion improved, figures and references added, typos and numerical glitches fixed, conclusions unchanged
openalex created_date 2018/07/19 · arxiv created 2018/08/29 · openalex publication_date 2018/11/01 · arxiv updated 2018/12/05 · openalex updated_date 2026/08/05
A bstract We study vector boson fusion production of new scalar singlets at high energy lepton colliders. We find that CLIC has the potential to test single production cross-sections of a few tens of attobarns in di-Higgs and di-boson final states. In models with a sizeable singlet-Higgs mixing, these values correspond to a precision in Higgs couplings of order 0.1% or better. We compare our sensitivities with those of the LHC and interpret our results in well-motivated models like the Twin Higgs, the NMSSM and axion-like particles. Looking forward to even higher energy machines, we show that the reach of muon colliders like LEMMA or MAP overcomes the one of future hadron machines like FCC-hh. We finally study the pair production of the new scalar singlets via an off-shell Higgs. This process does not vanish for small mixings and will constitute a crucial probe of models generating a first order electro-weak phase transition.