We review the theory and phenomenology of isosinglet vector-like quarks (VLQs). In recent
years, interest in VLQs has been increasing, due to their contributions to new physics effects …

A bstract A search for pair production of vector-like quarks, both up-type (T) and down-type
(B), as well as for four-top-quark production, is presented. The search is based on pp …

A bstract A search is presented for pair production of heavy vector-like T and B quarks in
proton-proton collisions at\(\sqrt {s}= 13\) TeV. The data sample corresponds to an integrated …

A bstract A search is presented for vector-like T and B quark-antiquark pairs produced in
proton-proton collisions at a center-of-mass energy of 13 TeV. Data were collected by the …

A likelihood-based reconstruction algorithm for arbitrary event topologies is introduced and,
as an example, applied to the single-lepton decay mode of top-quark pair production. The …

A search has been performed for pair production of heavy vectorlike down-type (B) quarks.
The analysis explores the lepton-plus-jets final state, characterized by events with one …

A bstract Anomalously light fermionic partners of the top quark often appear in explicit
constructions, such as the 5d holographic models, where the Higgs is a light composite …

A search is made for a vector-like $ T $ quark decaying into a Higgs boson and a top quark
in 13 TeV proton-proton collisions using the ATLAS detector at the Large Hadron Collider …

A bstract A search is presented for the production of new heavy quarks that decay to a Z
boson and a third-generation Standard Model quark. In the case of a new charge+ 2/3 quark …

A bstract A search for vector-like leptons in multilepton (two, three, or four-or-more electrons
plus muons) final states with zero or more hadronic τ-lepton decays is presented. The …