We present a measurement of the W-boson-pair production cross section in pp¯ 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<sup>+</sup>W<sup>-</sup> 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 9.7fb-1 of integrated luminosity, a total of 3027 collision events consistent with W<sup>+</sup>W<sup>-</sup> production are observed with an estimated background contribution of 1790 ± 190 events. The measured total cross section is Ï(pp¯ â W<sup>+</sup>W<sup>-</sup>)= 14.0 ± 0.6 (stat)<inf>-1.0</inf><sup>+1.2</sup> (syst) ± 0.8 (lumi) pb, consistent with the standard model prediction.
Measurement of the production and differential cross sections of W+W- bosons in association with jets in p(p)over-bar collisions at root s = 1.96 TeV
MANCA, GIULIA;
2015-01-01
Abstract
We present a measurement of the W-boson-pair production cross section in pp¯ 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 9.7fb-1 of integrated luminosity, a total of 3027 collision events consistent with W+W- production are observed with an estimated background contribution of 1790 ± 190 events. The measured total cross section is Ï(pp¯ â W+W-)= 14.0 ± 0.6 (stat)File | Dimensione | Formato | |
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PhysRevD.92.039901.pdf
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Descrizione: Publisher's Note. This paper was published online on 23 June 2015 with an incorrect listing of author affiliations and footnotes. The affiliations and footnotes have been corrected as of 28 July 2015.
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