Diphoton Resonances in the Renormalizable Coloron Model

TL;DR

This paper explores how the renormalizable coloron model's scalar and pseudoscalar bosons could explain the diphoton resonance signals observed by CMS and ATLAS, consistent with existing constraints and absent signals in other channels.

Contribution

It demonstrates that the scalar and pseudoscalar bosons in the model can account for diphoton signals via loop processes, expanding the understanding of potential new physics explanations.

Findings

Either boson can produce the diphoton resonance.

Loop production explains the absence of signals in other channels.

Degenerate bosons can jointly account for the observed signal.

Abstract

The renormalizable coloron model, which has previously been shown in the literature to be consistent with a wide array of theoretical and precision electroweak constraints, includes a pair of spinless bosons (one scalar, one pseudoscalar). We show that either of them, or both together if they are degenerate, could be responsible for the diphoton resonance signal for which both CMS and ATLAS have seen evidence. Because either of these bosons would be produced and decay through loops of spectator fermions, the absence of signals in dijet, $t\bar{t}$, and electroweak boson pair channels is not a surprise.