Deciphering the CP nature of the 750 GeV resonance

Understand

The recently observed excess in diphoton events at around 750\,GeV can be satisfactorily described in terms of a new spin-0 real singlet with effective interactions to the gauge bosons.

• In this letter we first review the current constraints on this setup.
• We further explore the production in association with a gauge boson.
• We show the potential of this channel to unravel current flat directions in the allowed parameter space.