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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
Baringer, Philip S. Bean, Alice Christofek, L. Coppage, Don Gardner, J. Hensel, Carsten Jabeen, S. Wilson, Graham Wallace
Baringer, Philip S.
Bean, Alice
Christofek, L.
Coppage, Don
Gardner, J.
Hensel, Carsten
Jabeen, S.
Wilson, Graham Wallace
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Abstract
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.
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2005-04
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AMERICAN PHYSICAL SOC
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Abazov, VM; Abbott, B, et al. Measurement of the WW production cross section in p(p)over-bar collisions at root(s)over-bar=1.96 TeV. PHYSICAL REVIEW LETTERS. April 2005. 94(15)