Hexapod Coloron at the LHC

TL;DR

This paper explores a novel decay mode of the coloron into multiple jets via Higgs-like bosons, proposing a jet-substructure search strategy that enhances detection prospects at the LHC for masses up to 5 TeV.

Contribution

It introduces a detailed collider analysis for the coloron decay into Higgs bosons and develops a jet-substructure method for boosted scenarios, expanding search strategies beyond traditional dijet signatures.

Findings

LHC can discover colorons up to 5 TeV mass with 100 fb$^{-1}$ data.

Boosted $_I$ behaves as a four-prong fat jet, aiding detection.

Jet-substructure techniques improve sensitivity for boosted decay products.

Abstract

Instead of the usual dijet decay, the coloron may mainly decay into its own "Higgs bosons", which subsequently decay into many jets. This is a general feature of the renormalizable coloron model, where the corresponding "Higgs bosons" are a color-octet $\Theta$ and a color-singlet $\phi_I$. In this paper, we perform a detailed collider study for the signature of $pp \rightarrow G' \rightarrow (\Theta \rightarrow gg) (\phi_I \rightarrow gg q\bar{q})$ with the coloron $G'$ as a six-jet resonance. For a light $\phi_I$ below around 0.5 TeV, it may be boosted and behave as a four-prong fat jet. We also develop a jet-substructure-based search strategy to cover this boosted $\phi_I$ case. Independent of whether $\phi_I$ is boosted or not, the 13 TeV LHC with 100 fb$^{-1}$ has great discovery potential for a coloron with the mass sensitivity up to 5 TeV.