Search for Vector-like Quark, Heavy Neutral Lepton and Long-lived Particles at ATLAS and CMS

TL;DR

This paper reports recent experimental searches at the LHC for vector-like quarks, heavy neutral leptons, and long-lived particles predicted by theories beyond the Standard Model, focusing on their unique signatures.

Contribution

It presents new results from ATLAS and CMS experiments specifically targeting BSM particles like vector-like quarks and heavy neutral leptons.

Findings

No significant signals observed for the targeted particles.

Constraints placed on the masses and couplings of these BSM particles.

Enhanced understanding of the parameter space for future searches.

Abstract

Several theories beyond the Standard Model (BSM) predict heavy neutral leptons, or long-lived particles with unique signatures which are difficult to reconstruct. Another area of interest are vector-like quarks which lie at the heart of many extensions to the Standard Model seeking to address the Hierarchy Problem, as they can naturally cancel the mass divergence for the Higgs boson. New results for these BSM searches from the ATLAS and CMS experiments at the LHC are presented.