Content area
Abstract
We compute the NNLO QCD corrections to three-photon production at the LHC. This is the first NNLO QCD calculation for a 2 → 3 process. Our calculation is exact, except for the scale-independent part of the two-loop finite remainder which is included in the leading color approximation. We estimate the size of the missing two-loop corrections and find them to be phenomenologically negligible. We compare our predictions with available 8 TeV measurement from the ATLAS collaboration. We find that the inclusion of the NNLO corrections eliminates the existing significant discrepancy with respect to NLO QCD predictions, paving the way for precision phenomenology in this process.
Details
Title
NNLO QCD corrections to three-photon production at the LHC
Author
Chawdhry, Herschel A 1
; Czakon Michal 2 ; Mitov, Alexander 1 ; Poncelet, Rene 1
1 University of Cambridge, Cavendish Laboratory, Cambridge, UK (GRID:grid.5335.0) (ISNI:0000000121885934)
2 RWTH Aachen University, Institut für Theoretische Teilchenphysik und Kosmologie, Aachen, Germany (GRID:grid.1957.a) (ISNI:0000 0001 0728 696X)
; Czakon Michal 2 ; Mitov, Alexander 1 ; Poncelet, Rene 1 1 University of Cambridge, Cavendish Laboratory, Cambridge, UK (GRID:grid.5335.0) (ISNI:0000000121885934)
2 RWTH Aachen University, Institut für Theoretische Teilchenphysik und Kosmologie, Aachen, Germany (GRID:grid.1957.a) (ISNI:0000 0001 0728 696X)
Publication year
2020
Publication date
Feb 2020
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2354607815
Copyright
Journal of High Energy Physics is a copyright of Springer, (2020). All Rights Reserved.