Vectorlike Leptons as the Tip of the Dark Matter Iceberg

Abstract

A vectorlike lepton could make up a tiny fraction of the dark matter. Its large Z-boson mediated direct detection cross section can compensate for the small relic abundance, giving rise to an interesting signal at future experiments---perhaps even the first one detected. We discuss how such a scenario might arise in the context of a simple non-thermal cosmology and investigate bounds from direct detection experiments and whether this scenario might be probed at the LHC. Searches for disappearing tracks appear promising.

8 pages, 4 figures, v.2. streamlined discussion of multiple moduli case

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• Closing the window for compressed Dark Sectors with disappearing charged tracks
• Prospects for vectorlike leptons at future proton-proton colliders
• Last Electroweak WIMP Standing: Pseudo-Dirac Higgsino Status and Compact Stars as Future Probes
• Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV at the CMS experiment
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• $Z$ boson mediated dark matter beyond the effective theory
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• Doublet-singlet model and unitarity
• GeV-Scale Messengers of Planck-Scale Dark Matter
• The Two Scales of New Physics in Higgs Couplings
• Long-lived Searches of Vector-like Lepton and Its Accompanying Scalar at Colliders
• String Consistency, Heavy Exotics, and the $750$ GeV Diphoton Excess at the LHC
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• Stability of the Standard Model Vacuum with Vector-Like Leptons: A Critical Examination
• H Marks the Spot: Searching for Exotic Production of Higgs + X to Map Out New Physics
• Machine learning study on single production of a singlet vectorlike lepton at the Large Hadron Collider