Color Discriminant Variable to Separate Dijet Resonances at the LHC

TL;DR

This paper introduces a color discriminant variable method to identify the color structure of narrow dijet resonances at the LHC, enabling model-independent classification based on measurable resonance properties.

Contribution

It provides a transparent theoretical formulation of the color discriminant variable, linking it to resonance branching ratios and parton properties, improving resonance classification.

Findings

The method effectively distinguishes color-triplet and color-sextet scalar diquarks from other resonances.

The formulation simplifies predictions of the variable for different resonance classes.

The approach enhances the ability to identify resonance color structure at the LHC.

Abstract

A narrow resonance decaying to dijets could be discovered at the 14 TeV run of the LHC. To quickly identify its color structure in a model-independent manner, we introduced a method based on a color discriminant variable, determined from the measurements of the resonance's production cross section, mass and width. This talk introduces a more transparent theoretical formulation of the color discriminant variable that highlights its relationship to the branching ratios of the resonance into incoming and outgoing partons and to the properties of those partons. The formulation makes it easier to predict the value of the variable for a given class of resonance. We show that this method applies well to color-triplet and color-sextet scalar diquarks, distinguishing them clearly from other candidate resonances.