Measurement of the isolated diphoton cross section in pp collisions at √s=7 TeV with the ATLAS detector
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[superscript -1]. The background, consisting...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/71988 https://orcid.org/0000-0002-7586-7253 |
| Summary: | 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[superscript -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[subscript γγ]), total transverse momentum (pT,[subscript γγ]), and azimuthal separation (Δϕ[subscript γγ]), are presented and compared to the predictions of next-to-leading-order QCD. |
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