New results for t bar t production at hadron colliders

Abstract

We present new theoretical predictions for the t bar t production cross section at NNLO at the Tevatron and the LHC. We discuss the scale uncertainty and the errors due to the parton distribution functions (PDFs). For the LHC, we present a fit formula for the pair production cross section as a function of the center of mass energy and we provide predictions for the pair production cross section of a hypothetical heavy fourth generation quark t'.

arXiv comment5 pages, 9 figures, to appear in the proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2009, 26-30 April 2009, Madrid

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• Parton distributions for the LHC
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• Measuring the running top-quark mass
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• Search for neutral MSSM Higgs bosons decaying to tau^+ tau^- pairs in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Search for high-mass resonances decaying to dilepton final states in pp collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
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• Measurement of the top quark pair production cross section in pp collisions at sqrt(s) = 7 TeV in dilepton final states containing a tau
• Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment
• A search for high-mass resonances decaying to tau+tau- in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Measurement of the cross-section for b-jets produced in association with a Z boson at sqrt(s)=7 TeV with the ATLAS detector
• Searching for $t\to ch$ with Multi-Leptons
• Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in sqrt(s) = 7 Tev proton-proton collisions
• $\mathcal{O}({\alpha }_s)$ corrections to the B-hadron energy distribution of the top decay in the Minimal Supersymmetric Standard Model considering GM-VFN scheme
• Search for single b*-quark production with the ATLAS detector at sqrt(s)=7 TeV
• About the EW contribution to the relation between pole and MS-masses of the top-quark in the Standard Model
• Recent results on top physics at ATLAS