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Measurement of the Z -> tau tau cross section with the ATLAS detector

Aad G.
•
Abbott B.
•
Abdallah J.
altro
Zwalinski L.
2011
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
The Z -> tau tau cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the tau 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(-1), at a proton-proton center-of-mass energy of root 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 -> tau tau 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.
DOI
10.1103/PhysRevD.84.112006
WOS
WOS:000298131100002
Archivio
http://hdl.handle.net/11390/884281
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84855259626
Diritti
metadata only access
Web of Science© citazioni
11
Data di acquisizione
Mar 17, 2024
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