Bound-state effects on kinematical distributions of top quarks at hadron colliders

Yukinari Sumino, Hiroshi Yokoya

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


First we present a theoretical framework to compute the fully differential cross sections for the top-quark productions and their subsequent decays at hadron colliders, incorporating the bound-state effects which are important in the tt̄ threshold region. We include the bound-state effects such that the cross sections are correct in the LO approximation both in the threshold and high-energy regions. Then, based on this framework we compute various kinematical distributions of top quarks as well as of their decay products at the LHC, by means of Monte-Carlo event-generation. These are compared with the corresponding predictions based on conventional perturbative QCD. In particular, we find a-characteristic bound-state effect on the (bW+)- (b̄W-) double-invariant-mass distribution, which is deformed to the lower invariant-mass side in a correlated manner.

Original languageEnglish
Article number34
JournalJournal of High Energy Physics
Issue number9
Publication statusPublished - 2010


  • Hadronic colliders
  • Heavy quark physics
  • QCD


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