# Hypercharge Axion and the Diphoton $750$ GeV Resonance Academic Article

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• Overview
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### abstract

• Abstract: The CMS and ATLAS reports on a possible excess of diphoton events at $750$ GeV are the cause of great excitement and hope. We show that a pseudoscalar axion coupled to the topological density of hypercharge, suggested in the past by Brustein and Oaknin as a candidate for inducing baryogenesis, can explain the signal in the diphoton channel. The hypercharge axion (HCA) can also decay to $Z\gamma$ and $ZZ$. The expected number of events in these channels is too small to have been detected, but …

### publication date

• January 27, 2016