Color-octet Companions of a 750 GeV Heavy Pion

TL;DR

This paper investigates how existing LHC searches constrain the production of color octet bosons associated with a 750 GeV diphoton resonance, providing limits and future prospects for detection.

Contribution

It demonstrates that current LHC dijet and photon+jet searches impose strong limits on color octet states related to the 750 GeV resonance, and discusses future detection potential.

Findings

Current constraints limit the diphoton cross section to below 5 fb at 13 TeV.

Existing searches exclude certain parameter spaces for color octet bosons.

Future photon+jet resonance searches can confirm the presence of color octet states.

Abstract

Color octet bosons are a universal prediction of models in which the 750 GeV diphoton resonance corresponds to a pion of a QCD-like composite sector. We show that the existing searches for dijet and photon plus jet resonances at the LHC constrain single productions of color octet states and can be translated into stringent limits on the 750 GeV diphoton rate. For a minimal 5 + 5bar model, the 750 GeV diphoton signal cross section at the 13 TeV LHC is constrained to be below around 5 fb. Future LHC searches for the photon plus jet resonances can establish evidence of a new color-octet state with 20/fb and validate a pion-like explanation for the 750 GeV resonance.