Searches for vector-like quarks and resonances decaying to top quarks with the ATLAS and CMS detectors

TL;DR

This paper reviews searches conducted by ATLAS and CMS for vector-like quarks and heavy resonances decaying to top quarks using 8 and 13 TeV proton-proton collision data, setting new exclusion limits.

Contribution

It compiles and reports on extensive experimental searches for vector-like quarks and resonances, providing the most recent exclusion limits across various models.

Findings

No evidence for vector-like quarks or resonances was found.

Stringent exclusion limits on masses and cross sections were established.

The results constrain many beyond standard model theories.

Abstract

Many models beyond the standard model predict the existence of vector-like quarks or other types of heavy resonances. Using proton-proton collision data at center-of-mass energies of 8 and 13 TeV, the ATLAS and CMS Collaborations have performed a multitude of searches for pair and singly produced vector-like quarks decaying to W, Z, or Higgs bosons. Heavy gauge and (pseudo)scalar resonances decaying to top quarks have been searched for as well. No evidence for any of these hypothetical particles has been found yet, and stringent exclusion limits are derived on their masses, cross sections and couplings in various models.