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Top-quark pair production near threshold at LHC

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Abstract

The next-to-leading order analysis for the cross section for hadroproduction of top-quark pairs close to threshold is presented. Within the framework of non-relativistic QCD a significant enhancement compared to fixed-order perturbation theory is observed which originates from the characteristic remnant of the 1S peak below production threshold of top-quark pairs. The analysis includes all color-singlet and color-octet configurations of top-quark pairs in S-wave states and, for the dominant configurations, it employs all-order soft-gluon resummation for the hard parton cross section. Numerical results for the Large Hadron Collider at \(\sqrt{s}=14~\) TeV and \(\sqrt{s}=10~\) TeV and also for the Tevatron are presented. The possibility of a top-quark mass measurement from the invariant-mass distribution of top-quark pairs is discussed.

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Author information

Authors and Affiliations

  1. Institut für Theoretische Teilchenphysik, Universität Karlsruhe (TH), Karlsruhe Institute of Technology (KIT), 76128, Karlsruhe, Germany

    Y. Kiyo, J. H. Kühn & M. Steinhauser

  2. Deutsches Elektronen-Synchrotron DESY, 15738, Zeuthen, Germany

    S. Moch

  3. Institut für Physik, Humboldt-Universität zu Berlin, 10099, Berlin, Germany

    P. Uwer

Authors
  1. Y. Kiyo
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  2. J. H. Kühn
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  3. S. Moch
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  4. M. Steinhauser
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  5. P. Uwer
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Corresponding author

Correspondence to M. Steinhauser.

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Kiyo, Y., Kühn, J.H., Moch, S. et al. Top-quark pair production near threshold at LHC. Eur. Phys. J. C 60, 375–386 (2009). https://doi.org/10.1140/epjc/s10052-009-0892-7

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  • DOI: https://doi.org/10.1140/epjc/s10052-009-0892-7

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