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" Measurement of the isolated diphoton cross section in pp collisions at √s=7TeV with the ATLAS detector "
Aad, G; Abbott, B; Abdallah, J; Abdelalim, AA; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS; Adams, DL; Addy, TN; Adelman, J; Aderholz, M; Adomeit, S; Adragna, P; Adye, T; Aefsky, S; Aguilar-Saavedra, JA; Aharrouche, M; Ahlen, SP; Ahles, F; Ahmad, A; Ahsan, M; et al.
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AL
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| Record Number
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913352
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LA7vd14150
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| Title & Author
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Measurement of the isolated diphoton cross section in pp collisions at √s=7TeV with the ATLAS detector [Article]\ Aad, G; Abbott, B; Abdallah, J; Abdelalim, AA; Abdesselam, A; Abdinov, O; Abi, B; Abolins, M; Abramowicz, H; Abreu, H; Acerbi, E; Acharya, BS; Adams, DL; Addy, TN; Adelman, J; Aderholz, M; Adomeit, S; Adragna, P; Adye, T; Aefsky, S; Aguilar-Saavedra, JA; Aharrouche, M; Ahlen, SP; Ahles, F; Ahmad, A; Ahsan, M; et al.
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2012
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UC Santa Cruz
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| Abstract
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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=7TeV. The full data set acquired in 2010 is used, corresponding to an integrated luminosity of 37pb -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 γγ), total transverse momentum (p T,γγ), and azimuthal separation (Δφ γγ), are presented and compared to the predictions of next-to-leading-order QCD. © 2012 CERN.
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