A plausible explanation for the lightness of neutrino masses is that neutrinos are massless at
tree level, with their mass (typically Majorana) being generated radiatively at one or more …

This report presents a comprehensive collection of searches for new physics performed by
the ATLAS Collaboration during the Run 2 period of data taking at the Large Hadron …

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 …

The results of a search for the top squark, the supersymmetric partner of the top quark, in
final states with one isolated electron or muon, jets, and missing transverse momentum are …

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 We investigate a gauge extension of the Standard Model in light of the observed
hints of lepton universality violation in b→ cℓν and b→ sℓ+ ℓ− decays at BaBar, Belle and …

A bstract The results of a search for vector-like top quarks using events with exactly one
lepton, at least four jets, and large missing transverse momentum are reported. The search …

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 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+ …

A bstract Relatively light Top Partners are unmistakable signatures of reasonably Natural
Composite Higgs models and as such they are worth searching for at the LHC. Their …