Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV

Details Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV Measurement of the Inclusive Z Cross Section via Decays to Tau Pairs in pp Collisions at sqrt(s)=7 TeV

2011-04-08

arxiv.org/abs/1104.1617v1

JHEP 1108:117,2011

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1007/JHEP08(2011)117

A measurement of inclusive Z to tau^+ tau^- production in pp collisions is presented, in the final states mu+hadrons, e+hadrons, e+mu, and mu+mu. The data sample corresponds to an integrated luminosity of 36 inverse picobarns collected with the CMS detector at the LHC. The measured cross section is sigma(pp to Z) B(Z to tau^+ tau^-) = 1.00 +/- 0.05 (stat.) +/- 0.08 (syst.) +/-0.04 (lumi.) nb, which is in good agreement with the next-to-next-to-leading order QCD prediction and with previous measurements in the Z to e^+e^- and mu^+ mu^- channels. The reconstruction efficiency for hadronic tau decays is determined with a precision of 7%.

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