Top quark pair production beyond NNLO

  • Claudio Muselli
  • Marco Bonvini
  • Stefano Forte
  • Simone Marzani
  • Giovanni Ridolfi
Open Access
Regular Article - Theoretical Physics


We construct an approximate expression for the total cross section for the production of a heavy quark-antiquark pair in hadronic collisions at next-to-next-to-next-to-leading order (N3LO) in αs. We use a technique which exploits the analyticity of the Mellin space cross section, and the information on its singularity structure coming from large N (soft gluon, Sudakov) and small N (high energy, BFKL) all order resummations, previously introduced and used in the case of Higgs production. We validate our method by comparing to available exact results up to NNLO. We find that N3LO corrections increase the predicted top pair cross section at the LHC by about 4% over the NNLO.


QCD Phenomenology Hadronic Colliders 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2015

Authors and Affiliations

  • Claudio Muselli
    • 1
  • Marco Bonvini
    • 2
  • Stefano Forte
    • 1
  • Simone Marzani
    • 3
  • Giovanni Ridolfi
    • 4
  1. 1.TIF Lab, Dipartimento di FisicaUniversità di Milano, and INFN — Sezione di MilanoMilanoItaly
  2. 2.Rudolf Peierls Centre for Theoretical PhysicsUniversity of OxfordOxfordUnited Kingdom
  3. 3.Center for Theoretical PhysicsMassachusetts Institute of TechnologyCambridgeUnited States
  4. 4.Dipartimento di FisicaUniversità di Genova and INFN — Sezione di GenovaGenovaItaly

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