New constraints and discovery potential for Higgs to Higgs cascade decays through vectorlike leptons

Abstract

One of the cleanest signatures of a heavy Higgs boson in models with vectorlike leptons is $H\to e_4^{\pm }{\ell }^{\mp }\to h{\ell }^{+}{\ell }^{-}$ which, in two Higgs doublet model type-II, can even be the dominant decay mode of heavy Higgses. Among the decay modes of the standard model like Higgs boson, $h$, we consider $b\bar{b}$ and $\gamma \gamma$ as representative channels with sizable and negligible background, respectively. We obtained new model independent limits on production cross section for this process from recasting existing experimental searches and interpret them within the two Higgs doublet model. In addition, we show that these limits can be improved by about two orders of magnitude with appropriate selection cuts immediately with existing data sets. We also discuss expected sensitivities with integrated luminosity up to 3 ab${}^{-1}$ and present a brief overview of other channels.

arXiv comment17 pages, 9 figures

References in corpus (26)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FastJet user manual
• Big-Bang Nucleosynthesis
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• Dispelling the N^3 myth for the Kt jet-finder
• UFO - The Universal FeynRules Output
• Vector-like leptons: Higgs decays and collider phenomenology
• Explanation of the Muon g-2 Anomaly with Vectorlike Leptons and its Implications for Higgs Decays
• Search for the $b\bar{b}$ decay of the Standard Model Higgs boson in associated $(W/Z)H$ production with the ATLAS detector
• Search for a CP-odd Higgs boson decaying to $Zh$ in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Vectorlike leptons at the Large Hadron Collider
• Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
• Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at $\sqrt{s}=8$ TeV with ATLAS
• Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in llbb final states
• Limits on Vectorlike Leptons from Searches for Anomalous Production of Multi-Lepton Events
• Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h to tau tau
• Search for a new resonance decaying to a $W$ or $Z$ boson and a Higgs boson in the $\ell \ell /\ell \nu /\nu \nu +b\bar{b}$ final states with the ATLAS Detector
• Measurements of $Z\gamma$ and $Z\gamma \gamma$ production in $pp$ collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector
• Dip or nothingness of a Higgs resonance from the interference with a complex phase
• Two Higgs doublet model with vectorlike leptons and contributions to $pp\to WW$ and $H\to WW$
• Effects of vectorlike leptons on $h\to 4\ell$ and the connection to the muon g-2 anomaly
• New decay modes of heavy Higgs bosons in a two Higgs doublet model with vectorlike leptons
• A New Avenue to Charged Higgs Discovery in Multi-Higgs Models
• Contributions of flavor violating couplings of a Higgs boson to $pp\to WW$

Cited by in corpus (19)

• Prospects for Beyond the Standard Model Physics Searches at the Deep Underground Neutrino Experiment
• Prospects for vectorlike leptons at future proton-proton colliders
• Dark Matter "Collider" from Inelastic Boosted Dark Matter
• Muon $g-2$ in two Higgs doublet models with vectorlike leptons
• Hunting for Vectorlike Quarks
• Dark Matter and Collider Studies in the Left-Right Symmetric Model with Vector-Like Leptons
• Signals with six bottom quarks for charged and neutral Higgs bosons
• Dark Matter Phenomenology of SM and Enlarged Higgs Sectors Extended with Vector Like Leptons
• Tau-jet signatures of vectorlike quark decays to heavy charged and neutral Higgs bosons
• Top-bottom-tau Yukawa coupling unification in the MSSM+1VF and fermion masses as IR fixed points
• Current status on pair-produced muon-philic vectorlike leptons in multilepton channels at the LHC
• Cascade decays of Heavy Higgs bosons through vectorlike quarks
• Leptonic cascade decays of a heavy Higgs boson through vectorlike leptons at the LHC
• Extended Higgs Sectors in Radiative Neutrino Models
• The Two Scales of New Physics in Higgs Couplings
• H Marks the Spot: Searching for Exotic Production of Higgs + X to Map Out New Physics
• BSM Matter providing Neutrino Masses and Gauge Unification
• 2$b$ or not 2$b$: on the rejection of $g\to b\bar{b}$ jets
• Charged and neutral Higgs bosons in final states with six bottom quarks