# Novel signatures for vector-like quarks

## TL;DR

This paper explores supersymmetric models with vector-like quarks, revealing new decay modes involving scalars that lead to multi-top, multi-bottom, and multi-Higgs signals, and generalizes existing analysis tools.

## Contribution

It introduces new decay channels for vector-like quarks in supersymmetric models and extends the analysis framework to include these channels.

## Key findings

- New decay modes involving scalars are significant in supersymmetric models.
- Generalized branching ratio triangles accommodate additional decay channels.
- Recast limits from heavy quark searches to include supersymmetric decay modes.

## Abstract

We consider supersymmetric extensions of the standard model with a vector-like doublet $(T \, B)$ of quarks with charge $2/3$ and $-1/3$, respectively. Compared to non-supersymmetric models, there is a variety of new decay modes for the vector-like quarks, involving the extra scalars present in supersymmetry. The importance of these new modes, yielding multi-top, multi-bottom and also multi-Higgs signals, is highlighted by the analysis of several benchmark scenarios. We show how the triangles commonly used to represent the branching ratios of the `standard' decay modes of the vector-like quarks involving $W$, $Z$ or Higgs bosons can be generalised to include additional channels. We give an example by recasting the limits of a recent heavy quark search for this more general case.