Measurement of the isolated di-photon cross-section in $pp$ collisions at $\\sqrts=7$ TeV with the ATLAS detector
Journal
Physical Review
Journal Volume
D85
Pages
012003
Date Issued
2012
Author(s)
Aad, Georges et al. (The ATLAS Collaboration)
Abstract
The ATLAS experiment has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at ffiffi ffi s p 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 (m ), total transverse momentum (p T; ), and azimuthal separation ( ), are presented and compared to the predictions of next-toleading-order QCD.
Type
journal article