Measurement of the Z→ττ cross section with the ATLAS detector
Name
Aad-2011-Measurement of the Z ! cross section.pdf
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1.53 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Taylor, Frank E.
Date Issued
December 2011
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
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.84.112006
