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In this short note, we revisit the model of a CP-even singlet scalarresonance proposed in arXiv:1507.02483, where the resonance appears as thelightest composite state made of scalar quarks participating in hidden strongdynamics. We show that the model can consistently explain the excess ofdiphoton events with an invariant mass around 750GeV reported by both the ATLASand CMS experiments. We also discuss the nature of the charged composite statesin the TeV range which accompany to the neutral scalar. Due to inseparabilityof the dynamical scale and the mass of the resonance, the model also predictssignatures associated with the hidden dynamics such as leptons, jets along withmultiple photons at future collider experiments. We also associate theTeV-scale dynamics behind the resonance with an explanation of dark matter.

Revisiting Scalar Quark Hidden Sector in Light of 750-GeV Diphoton Resonance