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 7TeV 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 Delta phi less than or similar to 2.8 rad.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2012). Measurement of the production cross section for pairs of isolated photons in pp collisions at root s=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS(1) [10.1007/JHEP01(2012)133].

Measurement of the production cross section for pairs of isolated photons in pp collisions at root s=7 TeV

BENAGLIA, ANDREA DAVIDE;DE GUIO, FEDERICO;DI MATTEO, LEONARDO;GHEZZI, ALESSIO;MARTELLI, ARABELLA;MASSIRONI, ANDREA;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Govoni, P;Malberti, M;DINARDO, MAURO EMANUELE;
2012

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 7TeV 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 Delta phi less than or similar to 2.8 rad.
Articolo in rivista - Articolo scientifico
high energy collider; LHC; CMS
English
2012
1
133
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., et al. (2012). Measurement of the production cross section for pairs of isolated photons in pp collisions at root s=7 TeV. JOURNAL OF HIGH ENERGY PHYSICS(1) [10.1007/JHEP01(2012)133].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46499
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