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Status of double virtual NNLO QCD corrections for high multiplicity processes


Sotnikov, Vasily (2022). Status of double virtual NNLO QCD corrections for high multiplicity processes. In: Loops and Legs in Quantum Field Theory, Ettal, Germany, 25 April 2022 - 30 April 2022.

Abstract

Pushing the reach of NNLO QCD predictions to 2→3 production processes is one of the pillars of precision phenomenology program at the LHC. In this talk we will overview recent results and developments in the calculation of two-loop five-point amplitudes contributing towards achieving this goal. We will discuss challenges encountered in advancing the state-of-the-art beyond the class of massless five-point scattering. We will then present a basis set of transcendental functions sufficient to express any planar two-loop five-particle scattering amplitude with one external massive leg. This basis greatly facilitates derivation of compact analytic form of scattering amplitudes, and opens a possibility of their fast and reliable numerical evaluation. Applications for phenomenology of electroweak boson production can be reasonably anticipated in the near future.

Abstract

Pushing the reach of NNLO QCD predictions to 2→3 production processes is one of the pillars of precision phenomenology program at the LHC. In this talk we will overview recent results and developments in the calculation of two-loop five-point amplitudes contributing towards achieving this goal. We will discuss challenges encountered in advancing the state-of-the-art beyond the class of massless five-point scattering. We will then present a basis set of transcendental functions sufficient to express any planar two-loop five-particle scattering amplitude with one external massive leg. This basis greatly facilitates derivation of compact analytic form of scattering amplitudes, and opens a possibility of their fast and reliable numerical evaluation. Applications for phenomenology of electroweak boson production can be reasonably anticipated in the near future.

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Item Type:Conference or Workshop Item (Paper), not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Health Sciences > Multidisciplinary
Language:English
Event End Date:30 April 2022
Deposited On:04 Jan 2024 12:22
Last Modified:05 Jan 2024 21:00
OA Status:Hybrid
Publisher DOI:https://doi.org/10.22323/1.416.0002
Official URL:https://pos.sissa.it/416/002/pdf
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)