What is the gamma gamma resonance at 750 GeV?

Tuesday, 15 December, 2015

Published in: 

arXiv:1512.04933

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.

Author(s): 

Roberto Franceschini
Gian F. Giudice
Jernej F. Kamenik
Matthew McCullough
Alex Pomarol
Riccardo Rattazzi
Michele Redi
Francesco Riva
Alessandro Strumia
Riccardo Torre