Measurement of differential cross sections for isolated photon pairs in pp collisions at

The summary of the measurement of differential cross sections for the production of a pair of isolated photons in proton-proton collisions at [CMS Collaboration, CMS-SMP-13-001 (2013), CERN-PH-EP-2014-067 (2014)] is presented. The data sample corresponds to an integrated luminosity of collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The cross section is measured differentially as a function of different kinematic variables of the diphoton system and compared to theoretical predictions at leading, next-to-leading and next-to-next-to-leading order in quantum chromodynamics (QCD).