Vector-like quarks: Status and new directions at the LHC

Experimental searches for vector-like quarks have until now only considered their decays into Standard Model particles. However, various new physics scenarios predict additional scalars, so that these vector-like quarks can decay to new channels. These new channels reduce the branching ratios into Standard Model final states, significantly affecting current mass bounds. In this article, we quantitatively assess the relevance and observability of single and pair production processes of vector-like quarks, followed by decays into both standard and exotic final states. We highlight the importance of large widths and the relative interaction strengths with Standard Model particles and new scalars. Then, we review the post-Moriond 2024 status of these models in light of available LHC data and discuss potential future strategies to enhance the scope of vector-like quark searches.

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Publication Details

Journal
SciPost Physics Core
Published
2024-12-04
DOI
https://doi.org/10.21468/scipostphyscore.7.4.079
Citations
17
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
11.21

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Vector-like quarks: Status and new directions at the LHC

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Particle physics theoretical and experimental studies
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Vector-like quarks: Status and new directions at the LHC

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article en
17 citations

Abstract

Experimental searches for vector-like quarks have until now only considered their decays into Standard Model particles. However, various new physics scenarios predict additional scalars, so that these vector-like quarks can decay to new channels. These new channels reduce the branching ratios into Standard Model final states, significantly affecting current mass bounds. In this article, we quantitatively assess the relevance and observability of single and pair production processes of vector-like quarks, followed by decays into both standard and exotic final states. We highlight the importance of large widths and the relative interaction strengths with Standard Model particles and new scalars. Then, we review the post-Moriond 2024 status of these models in light of available LHC data and discuss potential future strategies to enhance the scope of vector-like quark searches.

SciPost Physics CoreVol. 7(4)
Tata Institute of Fundamental Research (IN), Uppsala University (SE), Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Cosenza, University of Calabria (IT), Chalmers University of Technology (SE), University of Genoa (IT)
Kungl. Vetenskaps- och Vitterhets-Samhället i Göteborg, Department of Atomic Energy, Government of India, Chalmers Tekniska Högskola, Stiftelserna Wilhelm och Martina Lundgrens, Knut och Alice Wallenbergs Stiftelse, Mainz Institute for Theoretical Physics, Johannes Gutenberg University Mainz
Openalex Percentile: Top 1%
Particle physics theoretical and experimental studies
11.21
DOIOpen Access PDFOpenAlex
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