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Abstract:

The ATLAS experiment at the LHC has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at √s=7TeV . The full data set collected in 2011, corresponding to an integrated luminosity of 4.9 fb -1 , is used. The amount of background, from hadronic jets and isolated electrons, is estimated with data-driven techniques and subtracted. The total cross section, for two isolated photons with transverse energies above 25 GeV and 22 GeV respectively, in the acceptance of the electromagnetic calorimeter (|η| < 1.37 and 1.52 < |η| < 2.37) and with an angular separation ΔR > 0.4, is 44.0 -4.2 +3.2 pb. The differential cross sections as a function of the di-photon invariant mass, transverse momentum, azimuthal separation, and cosine of the polar angle of the largest transverse energy photon in the Collins-Soper di-photon rest frame are also measured. The results are compared to the prediction of leading-order parton-shower and next-to-leading-order and next-to-next-to-leading-order parton-level generators.[Figure not available: see fulltext.] © 2013 CERN for the benefit of the ATLAS collaboration.

Registro:

Documento: Artículo
Título:Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2899 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2899 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron Scattering
Año:2013
Volumen:2013
Número:1
DOI: http://dx.doi.org/10.1007/JHEP01(2013)086
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2013_n1_p_Aad

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Citas:

---------- APA ----------
(2013) . Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector. Journal of High Energy Physics, 2013(1).
http://dx.doi.org/10.1007/JHEP01(2013)086
---------- CHICAGO ----------
Aad, G. "Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector" . Journal of High Energy Physics 2013, no. 1 (2013).
http://dx.doi.org/10.1007/JHEP01(2013)086
---------- MLA ----------
Aad, G. "Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2013, no. 1, 2013.
http://dx.doi.org/10.1007/JHEP01(2013)086
---------- VANCOUVER ----------
Aad, G. Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector. J. High Energy Phys. 2013;2013(1).
http://dx.doi.org/10.1007/JHEP01(2013)086