Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Measurement of the Z to tau tau cross section with the ATLAS detector

Jul 7, 2012, 6:00 PM
Melbourne Convention and Exhibition Centre

Melbourne Convention and Exhibition Centre

Melbourne Australia
Board: 09
Poster Sessions Track 1 - The Standard Model and EW Symmetry Breaking - Higgs Searches Poster Session


Ms Jana Novakova (Charles University (CZ))


The Z to tau tau cross section has been recently measured using data collected with the ATLAS detector corresponding to the integrated luminosity of 1.34 − 1.55 fb-1. The analysis is performed in three different final states determined by decay modes of the tau leptons - so-called electron + hadronic tau, muon + hadronic tau and electron + muon channels. Cross sections are measured separately in each final state in a fiducial kinematic phase space, and also extrapolated to the full phase space in the invariant mass region 66 − 116 GeV. The individual cross sections are combined together and the product of the total Z boson production cross section and Z to tau tau branching fraction is measured to be 0.92 +/- 0.20(stat) +/- 0.08(syst) +/- 0.03(lumi) nb, in agreement with the NNLO theoretical expectation.

Primary author

Ms Jana Novakova (Charles University (CZ))

Presentation materials