Measurement of differential cross sections for Higgs boson production in the diphoton decay channel in pp collisions at $$\sqrt{s}=8\,\text {TeV} $$ s = 8 TeV

A measurement is presented of differential cross sections for Higgs boson (H) production in pp collisions at $$\sqrt{s}=8$$ $$\,\text {TeV}$$ . The analysis exploits the $${H} \rightarrow {\gamma }{\gamma }$$ decay in data corresponding to an integrated luminosity of 19.7 $$\,\text {fb}^\text {-1}$$ 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 ( $$p_{\mathrm {T}} ^{\gamma }$$ ) divided by the diphoton mass $$m_{\gamma \gamma }$$ satisfying the respective conditions of $$p_{\mathrm {T}} ^{\gamma }/m_{\gamma \gamma }> 1/3$$ and $${>}1/4$$ , the total fiducial cross section is $$32 \pm 10$$ $$\text {\,fb}$$ .