Measurement of differential cross sections for inclusive isolated-photon and photon+jets production in proton-proton collisions at $\sqrt{s} =$ 13 TeV

• Main Author: CMS collaboration (2299 authors)
• Publication Date: 2019
• Other Authors: Nayak, Aruna, Bargassa, Pedrame, Beirão Da Cruz E Silva, Cristóvão, Di Francesco, Agostino, Faccioli, Pietro, Galinhas, Bruno, Gallinaro, Michele, Hollar, Jonathan, Leonardo, Nuno, Lloret Iglesias, Lara, Seixas, Joao, Strong, Giles, Toldaiev, Oleksii, Vadruccio, Daniele, Varela, Joao, Vischia, Pietro, David Tinoco Mendes, Andre, Silva, Pedro, Musella, Pasquale
• Format: Article
• Language: eng
• Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Download full: http://dx.doi.org/10.1140/epjc/s10052-018-6482-9; http://hdl.handle.net/10400.26/27675

Measurements of inclusive isolated-photon and photon+jets production in proton-proton collisions at $\sqrt{s} =$ 13 TeV are presented. The analysis uses data collected by the CMS experiment in 2015, corresponding to an integrated luminosity of 2.26 fb$^{-1}$. The cross section for inclusive isolated-photon production is measured as a function of the photon transverse energy, for $E_\mathrm{T}>$ 190 GeV, and rapidity, for $|y|<$ 2.5. The cross section for photon+jets production is measured as a function of the photon transverse energy, for $E_\mathrm{T}>$ 190 GeV, the photon rapidity, for $|y|<$ 2.5, and the rapidity of the jet with highest transverse momentum, up to $|y|<$ 2.4. The experimental measurements are found to be in agreement with predictions from perturbative QCD.