Interplay of inert doublet and vector-like lepton triplet with displaced vertices at the LHC/FCC and MATHUSLA

Abstract

We study the interaction between the inert Higgs doublet (IDM) dark matter and a vector-like $SU(2)$ triplet lepton (VLL), both of which are $Z_2$-odd. The vector current of the VLL with the $Z$-boson rules out a fermionic or two-component dark matter scenario. However, a compressed mass spectrum and a sufficiently small Yukawa coupling allows co-annihilation and late decay of the VLL into the IDM sector, affecting the relic density of the pseudoscalar dark matter. The same two factors enable displaced decay of the VLL states, providing novel signatures involving hadronically quiet displaced multi-lepton final states. Such signatures to probe the model are studied at the 14 and 27 TeV LHC, as well as the 100 TeV FCC-hh. In addition to being detectable at the CMS/ATLAS experiments, if the new particles have sub-100 GeV masses, signals can also be seen at the proposed MATHUSLA detector.

45 pages, 14 figures, 9 tables

References in corpus (34)

• An Introduction to PYTHIA 8.2
• Effects of new leptons in Electroweak Precision Data
• The Inert Dark Matter
• Fermion Triplet Dark Matter and Radiative Neutrino Mass
• Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
• Direct Detection of Non-Chiral Dark Matter
• Limits on Vectorlike Leptons from Searches for Anomalous Production of Multi-Lepton Events
• Exploring collider signatures of the inert Higgs doublet model
• Dark matter assisted lepton anomalous magnetic moments and neutrino masses
• Prospects for vectorlike leptons at future proton-proton colliders
• Vector-like Leptons: Muon g-2 Anomaly, Lepton Flavor Violation, Higgs Decays, and Lepton Non-Universality
• Obscure Higgs boson at Colliders
• Enhancement of h --> gamma gamma in the Two Higgs Doublet Model Type I
• Right-handed sneutrino dark matter in $\mathbf{U}(1{)}^{\prime }$ seesaw models and its signatures at the LHC
• Muon $g-2$ in two Higgs doublet models with vectorlike leptons
• Inflation and Dark Matter in the Inert Doublet Model
• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Implications of right-handed neutrinos in $B-L$ extended standard model with scalar dark matter
• Vector-Like Leptons and Inert Scalar Triplet: Lepton Flavor Violation, $g-2$ and Collider Searches
• Bounds on the triplet fermions in type-III seesaw and implications for collider searches
• A Two Higgs Doublet Model for Dark Matter and Neutrino Masses
• Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model
• Distinguishing Inert Higgs Doublet and Inert Triplet Scenarios
• Phenomenology of vector-like leptons with Deep Learning at the Large Hadron Collider
• Low-mass doubly-charged Higgs bosons at LHC
• Displaced Higgs production in type III seesaw
• Displaced Higgs production in Type-III Seesaw at the LHC/FCC, MATHUSLA and Muon collider
• Singlet-Doublet Majorana Dark Matter and Neutrino Mass in a minimal Type-I Seesaw Scenario
• Vectorlike leptons and long-lived bosons at the LHC
• Scrutinizing Vacuum Stability in IDM with Type-III Inverse seesaw
• Vacuum Stability in Inert Higgs Doublet Model with Right-handed Neutrinos
• Searching for GeV-scale Majorana Dark Matter: inter spem et metum
• Collider Signatures of a Scalar Leptoquark and Vector-like Lepton in Light of Muon Anomaly
• Confronting dark fermion with a doubly charged Higgs in the left-right symmetric model

Cited by in corpus (4)

• Multi Higgs production via photon fusion at future multi-TeV muon colliders
• Long-lived Searches of Vector-like Lepton and Its Accompanying Scalar at Colliders
• Fate of the scalar quartic couplings in the inert models
• Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee