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Analytic form of the planar two-loop five-parton scattering amplitudes in QCD

  • S. Abreu
  • J. Dormans
  • F. Febres Cordero
  • H. Ita
  • B. Page
  • V. SotnikovEmail author
Open Access
Regular Article - Theoretical Physics
  • 18 Downloads

Abstract

We present the analytic form of all leading-color two-loop five-parton helicity amplitudes in QCD. The results are analytically reconstructed from exact numerical evaluations over finite fields. Combining a judicious choice of variables with a new approach to the treatment of particle states in D dimensions for the numerical evaluation of amplitudes, we obtain the analytic expressions with a modest computational effort. Their systematic simplification using multivariate partial-fraction decomposition leads to a particularly compact form. Our results provide all two-loop amplitudes required for the calculation of next-to-next-to-leading order QCD corrections to the production of three jets at hadron colliders in the leading-color approximation.

Keywords

Perturbative QCD Scattering Amplitudes 

Notes

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.

Supplementary material

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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Center for Cosmology, Particle Physics and Phenomenology (CP3)Université Catholique de LouvainLouvain-La-NeuveBelgium
  2. 2.Physikalisches InstitutAlbert-Ludwigs-Universität FreiburgFreiburgGermany
  3. 3.Physics DepartmentFlorida State UniversityTallahasseeU.S.A.
  4. 4.Institut de Physique Théorique, CEA, CNRSUniversité Paris-SaclayGif-sur-Yvette cedexFrance

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