Search for new resonances in the diphoton final state in the mass range between 80 and 110 GeV in pp collisions at $\sqrt{s}=8$ TeV

The results of a search for a new resonance decaying into two photons using proton-proton collision data at $\sqrt{s}=$ 8 TeV are presented for a diphoton invariant mass in the range between 80 and 110 GeV. The analysis uses a data set of 19.7 $\text{fb}^{-1}$ integrated luminosity. The expected and observed $95\%$ confidence level upper limits on the product of the cross-section times branching ratio into two photons are presented. No significant excess with respect to the expected limit is observed. The observed limit ranges from 75 fb at the mass hypothesis of 80 GeV to 42 fb at a mass of 110 GeV.