ATLAS 750 GeV Analysis

These slides are for BEACH 2016 presentation about 750 GeV searches at the ATLAS experiment with the 3.2 $\text{fb}^{-1}$ $\sqrt{s}$=13 TeV data collected in year 2015. The results from $\gamma\gamma$ and $Z\gamma$ final states are summarized. For $\gamma\gamma$ analysis, the local significance is 3.9 $\sigma$ for the spin-0 selection and 3.8 $\sigma$ for spin-2 selection at 750 GeV, with global significance both at 2.1 $\sigma$. For the $Z\gamma$ analysis, both the leptonic and hadronic decays of the $Z$ boson are studied and no excess at the signal region is observed.