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Measurement of the WW production cross section in pp collisions at square root[s]=1.96 TeV.
- Source :
-
Physical review letters [Phys Rev Lett] 2005 Apr 22; Vol. 94 (15), pp. 151801. Date of Electronic Publication: 2005 Apr 20. - Publication Year :
- 2005
-
Abstract
- We present a measurement of the W boson pair-production cross section in pp collisions at a center-of-mass energy of sqrt[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, emu, or mumu). 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(+4.3)(-3.8)(stat)+1.2-0.9(syst)+/-0.9(lum) pb, in agreement with predictions from the standard model.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 94
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 15904132
- Full Text :
- https://doi.org/10.1103/PhysRevLett.94.151801