Measurement of the Isolated Diphoton Cross Section in pp Collisions at √s=7 TeV with the ATLAS Detector
2012 (English)In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 85, 012003- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2012. Vol. 85, 012003- p.
PHOTON PAIR PRODUCTION, TO-LEADING ORDER
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-69586DOI: 10.1103/PhysRevD.85.012003ISI: 000298989300001OAI: oai:DiVA.org:su-69586DiVA: diva2:477870
FunderSwedish Research CouncilKnut and Alice Wallenberg Foundation