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- W1514682011 abstract "This dissertation presents a new measurement of p{bar p} {yields} t{bar t}X production at {radical}s = 1.96 TeV using 974.2 pb{sup -1} of data collected with the D0 detector between 2002 and 2006. We focus on the final state where the W boson from one of the top quarks decays into a {tau} lepton and its associated neutrino, while the other W boson decays into a quark-antiquark pair. We aim to select those events in which the {tau} lepton subsequently decays hadronically, meaning to one or three charged hadrons, zero or more neutral hadrons and a tau neutrino (the charge conjugate processes are implied in all of the above). The observable signature thus consists of a narrow calorimeter shower with associated track(s) characteristic of a hadronic tau decay, four or more jets, of which two are initiated by b quarks accompanying the W's in the top quark decays, and a large net missing momentum in the transverse plane due to the energetic neutrino-antineutrino pair that leave no trace in the detector media. The preliminary result for the measured cross section is: {sigma}(t{bar t}) = 6.9{sub -1.2}{sup +1.2}(stat){sub -0.7}{sup +0.8}(syst) {+-} 0.4 (lumi) pb. This indicates that our finding is consistent with the Standard Model prediction." @default.
- W1514682011 created "2016-06-24" @default.
- W1514682011 creator A5087958837 @default.
- W1514682011 date "2009-01-01" @default.
- W1514682011 modified "2023-10-18" @default.
- W1514682011 title "Measurements of top quark pair production cross section in proton anti-proton collisions at √s = 1.96 TeV in the τ + jets final state using 1 fb<sup>-1</sup> of data" @default.
- W1514682011 doi "https://doi.org/10.2172/970066" @default.
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