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Measurement of the WW production cross section in p(p)over-bar collisions at root(s)over-bar=1.96 TeV
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2005 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 94, no 15, 151801- p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the W boson pair-production cross section in p(p) over bar collisions at a center-of-mass energy of root s=1.96 TeV. The data, collected with the Run II D0 detector at Fermilab, correspond to an integrated luminosity of 224-252 pb(-1) depending on the final state (ee, e mu, or mu mu). We observe 25 candidates with a background expectation of 8.1 +/- 0.6(stat)+/- 0.6(syst)+/- 0.5(lum) events. The probability for an upward fluctuation of the background to produce the observed signal is 2.3x10(-7), equivalent to 5.2 standard deviations. The measurement yields a cross section of 13.8(-3.8)(+4.3)(stat)(-0.9)(+1.2)(syst)+/- 0.9(lum) pb, in agreement with predictions from the standard model.

Place, publisher, year, edition, pages
2005. Vol. 94, no 15, 151801- p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-37774DOI: 10.1103/PhysRevLett.94.151801ISI: 000228632500010Scopus ID: 2-s2.0-18244372957OAI: oai:DiVA.org:kth-37774DiVA: diva2:435194
Available from: 2011-08-17 Created: 2011-08-17 Last updated: 2017-12-08Bibliographically approved

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Strandberg, Jonas

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Clément, ChristopheStrandberg, Jonas
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