LHC Future Prospects of the 750 GeV Resonance

TL;DR

This paper assesses the future detection prospects of the 750 GeV resonance at the LHC using effective field theory, focusing on diboson signals and sensitivity projections at high luminosity.

Contribution

It introduces a model-independent method to evaluate future LHC sensitivities to the 750 GeV resonance through effective operators and diboson signal ratios.

Findings

High luminosity LHC can probe most of the parameter space with 3000 fb$^{-1}$.

Diboson signal ratios effectively distinguish relevant operators.

Sensitivity estimates are independent of production and decay details.

Abstract

A quantitative discussion on the future prospects of the 750 GeV resonance at the LHC experiment is given using a simple effective field theory analysis. The relative size of two effective operators relevant to diphoton decays can be probed by ratios of diboson signals in a robust way. We obtain the future sensitivities of $Z\gamma $, $ZZ$ and $WW$ resonance searches at the high luminosity LHC, rescaling from the current sensitivities at $\sqrt{s}=13$ TeV. Then, we show that a large fraction of parameter space in the effective field theory will be covered with 300 fb$^{-1}$ and almost the whole parameter space will be tested with 3000 fb$^{-1}$. This discussion is independent of production processes, other decay modes and total decay width.