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Measurement of the production and differential cross sections of W⁺W⁻ bosons in association with jets in pbar{p} collisions at sqrt{s}=1.96 TeV
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arxiv 1505.00801 v2 pith:CH2GRPRT submitted 2015-05-04 hep-ex
Measurement of the production and differential cross sections of W⁺W⁻ bosons in association with jets in pbar{p} collisions at sqrt{s}=1.96 TeV
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We present a measurement of the $W$-boson-pair production cross section in $p\bar{p}$ collisions at 1.96 TeV center-of-mass energy and the first measurement of the differential cross section as a function of jet multiplicity and leading-jet energy. The $W^{+}W^{-}$ cross section is measured in the final state comprising two charged leptons and neutrinos, where either charged lepton can be an electron or a muon. Using data collected by the CDF experiment corresponding to $9.7~\rm{fb}^{-1}$ of integrated luminosity, a total of $3027$ collision events consistent with $W^{+}W^{-}$ production are observed with an estimated background contribution of $1790\pm190$ events. The measured total cross section is $\sigma(p\bar{p} \rightarrow W^{+}W^{-}) = 14.0 \pm 0.6~(\rm{stat})^{+1.2}_{-1.0}~(\rm{syst})\pm0.8~(\rm{lumi})$ pb, consistent with the standard model prediction.
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