Measurement of differential cross sections for Higgs boson production in the diphoton decay channel in $pp$ collisions at $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$

Abstract

A measurement is presented of differential cross sections for Higgs boson (H) production in pp collisions at $\sqrt{s} = 8\mathrm{\,Te\kern -0.1em V}$. The analysis exploits the $H \to \gamma \gamma$ decay in data corresponding to an integrated luminosity of 19.7fb$^{−1}$ collected by the CMS experiment at the LHC. The cross section is measured as a function of the kinematic properties of the diphoton system and of the associated jets. Results corrected for detector effects are compared with predictions at next-to-leading order and next-to-next-to-leading order in perturbative quantum chromodynamics, as well as with predictions beyond the standard model. For isolated photons with pseudorapidities $|\eta| <2.5$, and with the photon of largest and next-to-largest transverse momentum ($p^{γ}_{T}$) divided by the diphoton mass mγγ satisfying the respective conditions of $p^{γ}_{T}/m_{ \gamma \gamma}>1/3$ and $>1/4$, the total fiducial cross section is $32\pm10$\,fb.