17 research outputs found

    Search for electroweak production of single top quarks in ppˉp\bar{p} collisions.

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    We present a search for electroweak production of single top quarks in the electron+jets and muon+jets decay channels. The measurements use ~90 pb^-1 of data from Run 1 of the Fermilab Tevatron collider, collected at 1.8 TeV with the DZero detector between 1992 and 1995. We use events that include a tagging muon, implying the presence of a b jet, to set an upper limit at the 95% confidence level on the cross section for the s-channel process ppbar->tb+X of 39 pb. The upper limit for the t-channel process ppbar->tqb+X is 58 pb. (arXiv

    A direct measurement of w boson decay width

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    Based on 85 pb−1^{-1} data of \ppbar collisions at s=1.8\sqrt{s}=1.8 \tev\ collected using the D{\O}detector at Fermilab during the 1994-1995 run of the Tevatron, we present a direct measurement of the total decay width of the \wb\ boson, ΓW\Gamma_W. The width is determined from the transverse mass spectrum in the W→e+νeW \to e+\nu_e decay channel and found to be ΓW=2.23−0.14+0.15\Gamma_W = 2.23^{+ 0.15}_{- 0.14}(stat.)±0.10\pm 0.10(syst.)GeV, consistent with the expectation from the standard model
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