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 …

The physics programme and the design are described of a new collider for particle and
nuclear physics, the Large Hadron Electron Collider (LHeC), in which a newly built electron …

A combination of the searches for pair-produced vectorlike partners of the top and bottom
quarks in various decay channels (T→ Z t/W b/H t, B→ Z b/W t/H b) is performed using 36.1 …

We obtain constraints on the mixing of vectorlike quarks coupling predominantly to the third
generation. We consider all (seven) relevant types of vectorlike quarks, individually. The …

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 …

We systematically study the possible signals at LHC of new vector-like quarks mainly
coupled to the third generation. We consider heavy quarks T, B, X, Y of charges 2/3,-1/3, 5/3 …

The Large Hadron Collider presents an unprecedented opportunity to probe the realm of
new physics in the TeV region and shed light on some of the core unresolved issues of …

A bstract A search is presented for the pair production of heavy vector-like T quarks,
primarily targeting the T quark decays to a W boson and a b-quark. The search is based on …

A search is described for the production of a pair of bottom-type vectorlike quarks (VLQs),
each decaying into ab or b¯ quark and either a Higgs or a Z boson, with a mass greater than …

A search for vectorlike quarks is presented, which targets their decay into a Z boson and a
third-generation Standard Model quark. In the case of a vectorlike quark T (B) with charge+ …