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

The CMS collaboration

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Resumen

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 Δ ℓ ≲. 2:8 rad.

Idioma originalInglés
Número de artículo133
PublicaciónJournal of High Energy Physics
Volumen2012
N.º1
DOI
EstadoPublicada - 2012
Publicado de forma externa

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