A search for the first generation charged vector-like leptons at future colliders
arXiv:2103.08222
Abstract
Flavor Democracy Hypothesis favors existence of iso-singlet quarks and vector-like charged leptons. Their observation at future colliders could shed light on the nature of mass and mixing patterns of known leptons and quarks, as well as Higgs boson itself. Vector-like quarks are extensively searched by ATLAS and CMS collaborations. Unfortunately, this is not the case for vector-like leptons, while they have actually similar status from phenomenology viewpoint. We argue that vector-like charged leptons should be included into the new physics search programs of future energy frontier colliders. It is shown that pair production at the HE-LHC with decay of one of the leptons to Ze and another to He channel, followed by H \rightarrow bb and Z \rightarrow μμdecays will give opportunity to scan masses of iso-singlet and iso-doublet charged leptons up to 0.9 TeV and 1.5 TeV, respectively. FCC will extend this region up to 2 TeV for iso-singlet and 3.6 TeV for iso-doublet charged leptons.
arXiv commentarXiv admin note: text overlap with arXiv:1801.03927
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