Combined measurement of differential and total cross sections in the H → γγ and the H → Z Z∗ → 4 decay channels at √s = 13 TeV with the ATLAS detector

Abstract

A combined measurement of differential and inclusive total cross sections of Higgs bosonproduction is performed using 36.1 fb-11 of 13 TeV proton?proton collision data producedby the LHC and recorded by the ATLAS detector in 2015 and 2016. Cross sections areobtained from measured H -->gammagamma and H ->ZZ--> 4l event yields, which are combinedtaking into account detector efficiencies, resolution, acceptances and branching fractions. Thetotal Higgs boson production cross section is measured to be 57.0 pb in agreement with the Standard Model prediction. Differential cross-section measurements are presented for the Higgs boson transverse momentum distribution, Higgs boson rapidity, number of jets produced together with the Higgs boson, and the transverse momentum of the leading jet. The results from the two decay channels are found to be compatible, and theircombination agrees with the Standard Model predictions.