What is the gamma gamma resonance at 750 GeV?
Roberto Franceschini, Gian F. Giudice, Jernej F. Kamenik, Matthew, McCullough, Alex Pomarol, Riccardo Rattazzi, Michele Redi, Francesco Riva,, Alessandro Strumia, Riccardo Torre
TL;DR
This paper analyzes the 750 GeV diphoton resonance observed at the LHC, exploring its properties, possible interpretations including a new boson with varying widths, and implications for strongly-interacting sectors and dark matter connections.
Contribution
It provides a detailed analysis of the 750 GeV resonance, considering different width scenarios and proposing models involving additional heavy particles linked to dark matter.
Findings
Hints of a new resonance at 750 GeV in diphoton data
Compatibility improved by introducing an additional heavy particle
Indications suggest the resonance may belong to a strongly-interacting sector
Abstract
Run 2 LHC data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 GeV. We analyse the data in terms of a new boson, extracting information on its properties and exploring theoretical interpretations. Scenarios covered include a narrow resonance and, as preliminary indications suggest, a wider resonance. If the width indications persist, the new particle is likely to belong to a strongly-interacting sector. We also show how compatibility between Run 1 and Run 2 data is improved by postulating the existence of an additional heavy particle, whose decays are possibly related to dark matter.
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