# Measurement of the production cross section for pairs of isolated photons in pp collisions at \sqrt{s} = 7 TeV

CMS Collaboration; Chatrchyan, S; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Aguiló, E; Amsler, C; Chiochia, V; De Visscher, S; Favaro, C; Ivova Rikova, M; Millan Mejias, B; Otiougova, P; Robmann, P; Schmidt, A; Snoek, H; Verzetti, M; et al (2012). Measurement of the production cross section for pairs of isolated photons in pp collisions at \sqrt{s} = 7 TeV. Journal of High Energy Physics, 2012(1):133.

## Abstract

The integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 pb−1 is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed for regions of the phase space where the two photons have an azimuthal angle difference Δφ≲2.8 rad.

The integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 pb−1 is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed for regions of the phase space where the two photons have an azimuthal angle difference Δφ≲2.8 rad.

## Citations

4 citations in Web of Science®
8 citations in Scopus®

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 2012 08 Mar 2013 10:07 05 Apr 2016 16:39 Springer 1029-8479 The original publication is available at www.springerlink.com https://doi.org/10.1007/JHEP01(2012)133
Permanent URL: https://doi.org/10.5167/uzh-76068

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