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arxiv: 1206.2454 · v2 · submitted 2012-06-12 · ✦ hep-ph · hep-ex

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Inclusive top-pair production phenomenology with TOPIXS

M. Beneke , P. Falgari , S. Klein , J. Piclum , C. Schwinn , M. Ubiali , F. Yan
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classification ✦ hep-ph hep-ex
keywords crossproductionsectiondistributioninclusivenext-to-next-to-leadingtop-pairtopixs
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We discuss various aspects of inclusive top-quark pair production based on TOPIXS, a new, flexible program that computes the production cross section at the Tevatron and LHC at next-to-next-to-leading logarithmic accuracy in soft and Coulomb resummation, including bound-state effects and the complete next-to-next-to-leading order result in the q-qbar channel, which has recently become available. We present the calculation of the top-pair cross section in pp collisions at 8 TeV centre-of-mass energy, as well as the cross sections for hypothetical heavy quarks in extensions of the standard model. The dependence on the parton distribution input is studied. Further we investigate the impact of LHC top cross section measurements at sqrt(s)=7 TeV on global fits of the gluon distribution using the NNPDF re-weighting method.

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  1. Threshold Top-Quark Pair-Production: Cross Sections and Key Uncertainties

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    Near-threshold top-quark pair production cross section at 13 TeV LHC is 11.67 pb with +1.43/-1.47 pb uncertainty, including NRQCD Green's function effects and comparison to POWHEG-BOX.