Searches for new heavy quarks in ATLAS

TL;DR

This paper reports on searches for new heavy vector-like quarks using the ATLAS detector at CERN, focusing on pair production and various decay channels, with results applicable to multiple VLQ decay modes.

Contribution

It presents two recent ATLAS searches for pair-produced vector-like quarks, exploring different decay modes and interpreting results for alternative VLQ decay scenarios.

Findings

Constraints on vector-like quark masses and decay modes

Sensitivity to $T$ quark decays into $tH$, $tZ$, and $Wb$

Results applicable to various VLQ decay hypotheses

Abstract

A search for new heavy quarks focusing on recent vector-like quark searches with the ATLAS detector at the CERN Large Hadron Collider is presented. Two recent searches targeting the pair production of type vector-like quarks are described. The first search is sensitive to vector-like up-type quark ($T$) decays to a $t$ quark and either a Standard Model Higgs boson or a $Z$ boson. The second search is primarily sensitive to $T$ decays to $W$ boson and a $b$ quark. Additionally, the results can be interpreted for alternative VLQ decays.