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Measurement of the t anti-t production cross section in p anti-p collisions at s**(1/2) = 1.96 TeV using kinematic characteristics of lepton + jets events

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    0096898 - FZÚ 2008 RIV US eng J - Journal Article
    Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš - Šimák, Vladislav
    Measurement of the t anti-t production cross section in p anti-p collisions at s**(1/2) = 1.96 TeV using kinematic characteristics of lepton + jets events.
    [Měření účinného průřezu produkce t anti-t v p anti-p srážkách při s**(1/2) = 1.96 TeV s použitím kinematických charakteristik lepton + jet událostí.]
    Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 76, č. 9 (2007), 092007/1-092007/24. ISSN 1550-7998
    R&D Projects: GA MŠMT 1P04LA210; GA MŠMT 1P05LA257
    Institutional research plan: CEZ:AV0Z10100502
    Keywords : top quark * D0 * DZero * cross section
    Subject RIV: BF - Elementary Particles and High Energy Physics
    Impact factor: 4.696, year: 2007

    We present a measurement of the top quark pair production cross section in ppbar collisions at sqrt(s)=1.96 TeV utilizing 425 pb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. We consider the final state of the top quark pair containing one high-pT electron or muon and at least four jets. We exploit specific kinematic features of ttbar events to extract the cross section. For a top quark mass of 175 GeV, we measure sigma_ttbar = 6.4 +1.3-1.2(stat) +/- 0.7(syst)+/- 0.4(lum) pb in good agreement with the standard model prediction.

    Prezentujeme měření účinného průřezu produkce páru top kvarků v p anti-p srážkách při s**(1/2) = 1.96 TeV. Pro hmotu kvarku 175 GeV jsme změřili účinný průřez sigma_ttbar = 6.4 +1.3-1.2(stat) +/- 0.7(syst)+/- 0.4(lum) pb, který je v dobrém souhlasu se předpovědí standardního modelu.
    Permanent Link: http://hdl.handle.net/11104/0156162

     
     
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