Explaining the diphoton excess in alternative left-right symmetric model

We propose a possible explanation for the recent diphoton excess reported by ATLAS and CMS Collaborations at around a 750 GeV diphoton invariant mass within the framework of the E6-motivated alternative left-right symmetric model, which is capable of addressing the B decay anomalies in the flavor sector, the eejj and epTjj excesses reported by CMS in run 1 of the LHC, and high-scale leptogenesis. We find that gluon-gluon fusion can give the observed production rate of the 750 GeV resonance, ñ, through a loop of scalar leptoquarks (h(c)) with a mass below a few TeV range, while ñ can subsequently decay into a γγ final state via loops of h(c) and Ẽ(c). Interestingly, the slepton (Ẽ(c)) loop can enhance the diphoton branching ratio significantly to successfully explain the observed cross section of the diphoton signal.