Measurement of the isolated diphoton cross section in pp collisions at √s=7 TeV with the ATLAS detector
Farrington, Sinead (2012) Measurement of the isolated diphoton cross section in pp collisions at √s=7 TeV with the ATLAS detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.85 (No.1). 012003. ISSN 1550-7998
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Official URL: http://dx.doi.org/10.1103/PhysRevD.85.012003
The ATLAS experiment has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at √s=7 TeV. The full data set acquired in 2010 is used, corresponding to an integrated luminosity of 37 pb-1. The background, consisting of hadronic jets and isolated electrons, is estimated with fully data-driven techniques and subtracted. The differential cross sections, as functions of the di-photon mass (mγγ), total transverse momentum (pT,γγ), and azimuthal separation (Δϕγγ), are presented and compared to the predictions of next-to-leading-order QCD.
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