Measurement of the production cross section for pairs of isolated photons in pp collisions at \sqrt{s} = 7 TeV
| Autor: | Sirunyan, A. M., Robmann, P.(Universität Zürich, Zurich, Switzerland), Chiochia, V., Millan Mejias, B., Chatrchyan, S., Verzetti, M., Schmidt, A., Favaro, C., Ivova Rikova, M., Khachatryan, V., et al, Otiougova, P., Aguiló, E., De Visscher, S, CMS Collaboration, Tumasyan, A., Amsler, C.(Universität Zürich, Zurich, Switzerland), Snoek, H. |
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| Přispěvatelé: | University of Zurich, Chatrchyan, S |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | 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. Zurich Open Repository and Archive OpenAIRE |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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