# Broad composite resonances and their signals at the LHC

## TL;DR

This paper investigates broad composite spin-1 resonances in composite Higgs models, highlighting their detectability at the LHC through various channels, especially involving third-generation quarks.

## Contribution

It introduces the phenomenology of broad spin-1 resonances interacting with third-generation quarks and compares different LHC search channels for their detection.

## Key findings

- $t\bar{t}$ resonance search is as sensitive as di-lepton channels.
- Same-sign di-lepton channel probes large $g_\rho$ regions.
- Complementary detection channels enhance discovery potential.

## Abstract

We explore the possibility that the left-handed third generation quark doublet $q_L$ is fully composite in composite Higgs models. The signature of the model is the presence of broad spin-1 resonances strongly interacting with the third generation quark doublet $q_L$. In this case, The $t\bar{t}$ resonance search channel is comparable in sensitivity to the di-lepton channel. In addition, the same-sign di-lepton channel in the $t\bar{t}\rho$ associate production can probe the large $g_\rho$ parameter space and complementary to the Drell-Yan production channels.