Precision measurements of Higgs boson differential production cross sections are
a key tool to probe the properties of the Higgs boson and test the standard model. New
physics can affect both Higgs boson production and decay, leading to deviations from the
distributions that are expected in the standard model. In this paper, combined measurements
of differential spectra in a fiducial region matching the experimental selections are performed,
based on analyses of four Higgs boson decay channels (γ γ , ZZ(∗), WW(∗), and ττ) using
proton-proton collision data recorded with the CMS detector at √s = 13 TeV, corresponding
to an integrated luminosity of 138 fb−1. The differential measurements are extrapolated to
the full phase space and combined to provide the differential spectra. A measurement of
the total Higgs boson production cross section is also performed using the γ γ and ZZ decay
channels, with a result of 53.4 +2.9 −2.9 (stat)+1.9 −1.8 (syst) pb, consistent with the standard model
prediction of 55.6 ± 2.5 pb. The fiducial measurements are used to compute limits on Higgs
boson couplings using the κ-framework and the SM effective field theory.
