Leptonic cascade decays of a heavy Higgs boson through vectorlike leptons at the LHC

• DOI: 10.1007/jhep10(2022)138
• Publication Date: 2022-10-21T13:03:57Z
• Authors: Radovan Dermisek; Junichiro Kawamura; Enrico Lunghi; Navin McGinnis; Seodong Shin
• Keywords: Vector-Like Fermions; FOS: Physical sciences; QC770-798; 7. Clean energy; 01 natural sciences; High Energy Physics - Experiment; High Energy Physics - Phenomenology; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph); Nuclear and particle physics. Atomic energy. Radioactivity; 0103 physical sciences; Multi-Higgs Models

We demonstrate the potential of fully leptonic cascade decays a heavy neutral Higgs boson through vectorlike leptons as simultaneous probe for extended sectors and extra matter particles at LHC. The processes we explore are unique in that their event topologies lead to di-boson-like final states with lepton pair which does not reconstruct mass gauge boson. By recasting existing $2\ell + E_T^{\rm miss}$ $3/4\ell$ searches channels using run2 data from LHC obtain $\textit{model independent}$ bounds on masses scalars use these results future prospects HL-LHC. Our can be directly applied any kind new physics scenarios sharing topology. For concreteness, apply our benchmark scenario: two doublet model type-II augmented leptons. Remarkably, even current sensitivity analysis shows reach up 2 TeV 1.5 TeV, respectively. Even low $\tan\beta \gtrsim 1,$ retains slightly above 1 TeV. sensitivities HL-LHC extend Higgses 2.7