We present a measurement of the W-boson-pair production cross section in ppÂ¯ 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 Â± 190 events. The measured total cross section is Ï(ppÂ¯ â W<sup>+</sup>W<sup>-</sup>)= 14.0 Â± 0.6 (stat)<inf>-1.0</inf><sup>+1.2</sup> (syst) Â± 0.8 (lumi) pb, consistent with the standard model prediction.
|Titolo:||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|
|Data di pubblicazione:||2015|
|Tipologia:||1.1 Articolo in rivista|
File in questo prodotto:
|PhysRevD.92.039901.pdf||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.||versione editoriale||Open Access Visualizza/Apri|