Measurements of the Top-quark Mass and the ttbar Cross Section in the Hadronic tau + Jets Decay Channel at sqrt(s) = 1.96 TeV

Abstract

We present the first direct measurement of the top-quark mass using $\ttbar$ events decaying in the hadronic $\tau$ + jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb${}^{-1}$ collected by the CDF II detector in $p\bar{p}$ collisions at $\sqrt{s}=1.96TeV$ at the Fermilab Tevatron, we measure the $t\bar{t}$ cross section, ${\sigma }_{t\bar{t}}$, and the top-quark mass, M${}_{top}$. We extract M${}_{top}$ from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure ${\sigma }_{t\bar{t}}=8.8\pm 3.3(\mathrm{stat})\pm 2.2(\mathrm{syst})\mathrm{pb}$ and M${}_{top}=172.7\pm 9.3(\mathrm{stat})\pm 3.7(\mathrm{syst})GeV/c^2$.

arXiv comment7 pages and 2 figures, accepted for publication in Phys. Rev. Lett

References in corpus (20)

• High-Energy-Physics Event Generation with PYTHIA 6.1
• ALPGEN, a generator for hard multiparton processes in hadronic collisions
• MadGraph/MadEvent v4: The New Web Generation
• An update on vector boson pair production at hadron colliders
• Determination of the Jet Energy Scale at the Collider Detector at Fermilab
• The fully differential single-top-quark cross section in next-to-leading order QCD
• Measurement of the ttbar Production Cross Section in ppbar Collisions at sqrt{s}=1.96 TeV using Lepton + Jets Events with Secondary Vertex b-tagging
• Angular Correlations in Top Quark Pair Production and Decay at Hadron Colliders
• Measurements of Inclusive W and Z Cross Sections in p-pbar Collisions at sqrt{s} =1.96 TeV
• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• A New Mass Reconstruction Technique for Resonances Decaying to di-tau
• Measurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector
• Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV
• TAUOLA the library for tau lepton decay, and KKMC/KORALB/KORALZ/... status report
• Heavy-quark pair production at two loops in QCD
• Search for neutral MSSM Higgs bosons decaying to tau pairs in p-pbar collisions at sqrt(s)=1.96 TeV
• First Measurement of the Ratio sigma_(t-tbar) / sigma_(Z/γ*->ll) and Precise Extraction of the t-tbar Cross Section
• Measurement of ttbar production in the tau + jets topology using ppbar collisions at sqrt{s} = 1.96 TeV
• A Search for the Associated Production of the Standard-Model Higgs Boson in the All-Hadronic Channel
• Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector

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