Probing Color Octet Couplings at the Large Hadron Collider

TL;DR

This paper explores how associated production of gauge bosons with color-octet resonances at the LHC can help determine the chiral couplings of these new particles, aiding in understanding their underlying theory.

Contribution

It introduces a novel channel for measuring the chiral structure of color-octet resonances at the LHC, extending the capability to probe small couplings across a wide mass range.

Findings

LHC can probe color-octet masses from 2.5 to 4.5 TeV.

The proposed channel is sensitive to very small couplings.

Analysis covers different decay widths and luminosities.

Abstract

Color-octet resonances arise in many well motivated theories beyond the standard model. As colored objects they are produced copiously at the LHC and can be discovered in early searches for new physics in dijet final states. Once they are discovered it will be important to measure the couplings of the new resonances to determine the underlying theoretical structure. We propose a new channel, associated production of $W,Z$ gauge bosons and color-octet resonances, to help determine the chiral structure of the couplings. We present our analysis for a range of color-octet masses (2.5 to 4.5 TeV), couplings and decay widths for the LHC with center of mass energy of 14 TeV and 10 ${\rm fb}^{-1}$ or 100 ${\rm fb}^{-1}$ of integrated luminosity. We find that the LHC can probe a large region of the parameter space up to very small couplings.