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Measurement of the Z→ττ cross section with the ATLAS detector

Author(s)
Taylor, Frank E.
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Abstract
The Z→ττ cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the τ leptons: muon-hadron, electron-hadron, electron-muon, and muon-muon. The analysis is based on a data sample corresponding to an integrated luminosity of 36  pb[superscript -1], at a proton-proton center-of-mass energy of √s=7  TeV. Cross sections are measured separately for each final state in fiducial regions of high detector acceptance, as well as in the full phase space, over the mass region 66–116 GeV. The individual cross sections are combined and the product of the total Z production cross section and Z→ττ branching fraction is measured to be 0.97±0.07(stat)±0.06(syst)±0.03(lumi)  nb, in agreement with next-to-next-to-leading order calculations.
Date issued
2011-12
URI
http://hdl.handle.net/1721.1/69834
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aad, G. et al. “Measurement of the Z→ττ Cross Section with the ATLAS Detector.” Physical Review D 84.11 (2011): n. pag. Web. 22 Mar. 2012. © 2011 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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