$\boldsymbol{SU(3)_{C}\otimes SU(3)_{L}\otimes U(1)_{X}}$ models in view of the $750$ GeV diphoton signal

Abstract: We analyze the recent diphoton signal reported by ATLAS and CMS collaborations in the context of the $SU(3){C}\otimes SU(3){L}\otimes U(1){X}$ anomaly free models, with a 750 GeV scalar candidate which can decay into two photons. These models may explain the 750GeV signal by means of one loop decays to $\gamma\gamma$ through charged vector and Higgs bosons, as well as top-, bottom- and electron-like exotic particles that arise naturally from the condition of anomaly cancellations of the $SU(3){C}\otimes SU(3){L}\otimes U(1){X}$ models.