Higgs boson cross section and mass measurements in the H→γγ channel with the CMS experiment

This report presents a review of the measurements of the Higgs boson’s mass and production cross-section in the diphoton decay channel using data collected by the CMS experiment at the LHC. The cross-section in a fiducial phase space was measured in Run 2 with 137 fb−1, obtaining 73.40+6.1−5.9fb, in agreement with the Standard Model theoretical value. The Higgs boson mass was measured with Run1 and Run 2 2016 data, obtaining 125.78±0.26 GeV. Due to the increased radiation damage in the calorimeters, a finer treatment of systematic uncertainties arising from longitudinal inhomogeneity in the ECAL light collection is necessary for ongoing full Run 2 analyses. Future analyses with data from Run3 are expected to improve precision both on production cross-section and on the Higgs boson’s mass.