Measurement of the Higgs boson inclusive and differential fiducial production cross sections in the diphoton decay channel with pp collisions at $\sqrt{s}$ = 13 TeV

TL;DR

This paper reports precise measurements of the Higgs boson production cross sections in the diphoton decay channel at 13 TeV, confirming consistency with the Standard Model across various observables and production modes.

Contribution

First detailed differential and inclusive fiducial cross section measurements of the Higgs boson in the diphoton channel at 13 TeV with high luminosity data.

Findings

Inclusive cross section measured as 73.4 fb, consistent with SM prediction.

No significant deviations from the Standard Model observed.

Differential measurements across multiple observables performed.

Abstract

The measurements of the inclusive and differential fiducial cross sections of the Higgs boson decaying to a pair of photons are presented. The analysis is performed using proton-proton collisions data recorded with the CMS detector at the LHC at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 137 fb$^{-1}$. The inclusive fiducial cross section is measured to be $\sigma_\mathrm{fid}$ = 73.4 $_{-5.3}^{+5.4}$ (stat) ${}_{-2.2}^{+2.4}$ (syst) fb, in agreement with the standard model expectation of 75.4 $\pm$ 4.1 fb. The measurements are also performed in fiducial regions targeting different production modes and as function of several observables describing the diphoton system, the number of additional jets present in the event, and other kinematic observables. Two double differential measurements are performed. No significant deviations from the standard model expectations are observed.