A Diphoton Resonance from Bulk RS

TL;DR

The paper discusses a potential explanation for a 750 GeV diphoton resonance observed at the LHC, proposing it as a scalar or pseudoscalar in a bulk Randall-Sundrum model with specific couplings to gauge bosons.

Contribution

It introduces a bulk RS model with a scalar near the Higgs, explaining the resonance as a strongly coupled state with distinctive gauge boson interactions.

Findings

Resonance could be a scalar or pseudoscalar in bulk RS

Decays to other SM particles are suppressed

Search for gauge boson couplings can reveal the model

Abstract

Recent LHC data hinted at a 750 GeV mass resonance that decays into two photons. A significant feature of this resonance is that its decays to any other Standard Model particles would be too low to be detected so far. Such a state has a compelling explanation in terms of a scalar or a pseudoscalar that is strongly coupled to vector states charged under the Standard Model gauge groups. Such a scenario is readily accommodated in bulk RS with a scalar localized in the bulk away from but close to the Higgs. Turning this around, we argue that a good way to find the elusive bulk RS model might be the search for a resonance with prominent couplings to gauge bosons.