Measurement of the WW production cross section in p(p)over-bar collisions at root(s)over-bar=1.96 TeV

Abazov, V. M. (author)

Åsman, Barbro (author)

Clément, Christophe (author)

2005
2005
English.
In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 94:15, s. 151801-

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Abazov, V. M.; Åsman, Barbro; Clément, Christo ...; Lager, Sara; Strandberg, Jona ...; Zylberstejn, A.

About the subject

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