Measurement of the w -> tau nu(tau) cross section in pp collisions at root s=7 TeV with the ATLAS experiment ATLAS Collaboration
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KünyeAad, G, Abbott, B., Abdallah, J., Abdelalim, A.A., Abdesselam, A., Abdinov, O. ... ATLAS Collaboration. (2012). Measurement of the w -> tau nu(tau) cross section in pp collisions at root s=7 TeV with the ATLAS experiment ATLAS Collaboration. Physics Letters B, 706 (4-5). pp. 276-294. http://dx.doi.org/10.1016/j.physletb.2011.11.057.
The cross section for the production of W bosons with subsequent decay W -> tau nu(tau) is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton-proton center-of-mass energy of root s = 7 TeV and corresponds to an integrated luminosity of 34 pb(-1). The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the W -> tau nu(tau) branching ratio is measured to be sigma(tot)(W -> tau nu tau) = 11.1 +/- 0.3 (stat) +/- 1.7 (syst) +/- 0.4 (lumi) nb.