Mr Benoit Courbon
An observation of the Higgs boson production for the two photon decay channel with the 2016 LHC Run 2 data is described. The analysis is performed using the dataset recorded by the CMS experiment at the LHC from pp collisions at centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 12.9 fb-1. The observed significance at the Run 1 ATLAS+CMS combined mH = 125.09 GeV is 5.6 sigma, where 6.2 sigma is expected. The best-fit signal strength relative to the standard model prediction is 0.95 +/- 0.20. Also, a search for an additional light Higgs boson decaying into two photons, in the mass range 80-110 GeV, is reported. This search is performed using a dataset of 19.7 fb-1 recorded by CMS at a center of mass energy of 8 TeV. No evidence for new particle is observed.