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Measurements of WW and WZ Production in W plus jets Final States in p(p)over-bar Collisions
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2012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 108, no 18, 181803- p.Article in journal (Refereed) Published
Abstract [en]

We study WW and WZ production with lvqq (l = e, mu) final states using data collected by the D0 detector at the Fermilab Tevatron Collider corresponding to 4.3 fb(-1) of integrated luminosity from p (p) over bar collisions at root s = 1.96 TeV. Assuming the ratio between the production cross sections sigma(WW) and sigma(WZ) as predicted by the standard model, we measure the total WV (V = W, Z) cross section to be sigma(WV) = 19.6(-3.0)(+3.2) pb and reject the background-only hypothesis at a level of 7.9 standard deviations. We also use b-jet discrimination to separate the WZ component from the dominant WW component. Simultaneously fitting WW and WZ contributions, we measure sigma(WW) = 15.9(-3.2)(+3.7) pb and sigma(WZ) = 3.3(-3.3)(+4.1) pb, which is consistent with the standard model predictions.

Place, publisher, year, edition, pages
2012. Vol. 108, no 18, 181803- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-174909DOI: 10.1103/PhysRevLett.108.181803ISI: 000303438500004OAI: oai:DiVA.org:uu-174909DiVA: diva2:529402
Available from: 2012-05-30 Created: 2012-05-30 Last updated: 2017-12-07Bibliographically approved

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Bélanger-Champagne, CamilleBuszello, Claus P.

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