Measurement of ttbar production in the tau + jets topology using ppbar collisions at sqrt{s} = 1.96 TeV

Abstract

We present a measurement of the ttbar production cross section multiplied by the branching ratio to tau lepton decaying semihadronically plus jets, at a center of mass energy sqrt{s}=1.96 TeV using 1 fb^(-1) of integrated luminosity collected with the D0 detector. Assuming a top quark mass of 170 GeV, we measure sigma_ttb * BR=0.60^{+0.23}_{-0.22} (stat) ^{+0.15}_{-0.14} (syst) +/- 0.04\;(lumi) pb. In addition, we extract the ttbar production cross section using the ttbar->tau+jets topology, with the result sigma_ttbar = 6.9_{-1.2}^{+1.2} (stat)_{-0.7}^{+0.8} (syst) \pm 0.4 (lumi) pb. These findings are in good agreement with standard model predictions and measurements performed using other top quark decay channels.

7 pages, 2 figures, Published Phys. Rev. D

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• Theoretical status and prospects for top-quark pair production at hadron colliders
• Updated predictions for the total production cross sections of top and of heavier quark pairs at the Tevatron and at the LHC
• The theoretical top quark cross section at the Tevatron and the LHC
• Measurement of the ttbar production cross section and top quark mass extraction using dilepton events in ppbar collisions
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• The top quark rapidity distribution and forward-backward asymmetry
• Measurements of the Top-quark Mass and the ttbar Cross Section in the Hadronic tau + Jets Decay Channel at sqrt(s) = 1.96 TeV
• Top Quark Physics at the Tevatron
• Flow Annealed Importance Sampling Bootstrap meets Differentiable Particle Physics