Search for a heavy boson in WW_γγ channel at the Large Hadron Collider in pp at $\sqrt{s}=13TeV$ and integrated luminosity of 36.5 fb⁻¹ with the ATLAS detector

In this study, a search for heavy boson H, decaying into the Standard Model Higgs h, and scalar boson S using 36.5 fb⁻¹ of proton-proton collision data recorded at $\sqrt{s}=13TeV$ by the ATLAS detector at the Large Hadron Collider is presented in this note. The investigation is carried out with h decaying into two photons and the semileptonic decays of two W's from S. The analysis procedures are described and the sensitivity of the analysis is presented. (paper)