Antenna subtraction for jet production observables in full colour at NNLO

• Published in: The journal of high energy physics Vol. 2022; no. 10; pp. 40 - 70
• Main Authors: Chen, X., Gehrmann, T., Glover, E. W. N., Mo, J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 06.10.2022; Springer Nature B.V; SpringerOpen
• Subjects: Antennas; Classical and Quantum Gravitation; Color; Decomposition; Elementary Particles; High energy physics; Higher-Order Perturbative Calculations; Jets and Jet Substructure; Partons; Phenomenology; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Regular Article - Theoretical Physics; Relativity Theory; Specific QCD Phenomenology; String Theory; Specific QCD Phenomenology; Jets and Jet Substructure; Higher-Order Perturbative Calculations
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP10(2022)040

A bstract We describe the details of the calculation of the full colour NNLO QCD corrections to jet production observables at the LHC with antenna subtraction. All relevant matrix elements for the process pp → jj at NNLO in full colour are colour-decomposed and given in a N c and n f expansion, making identification of leading and subleading colour contributions transparent. The colour-ordered antenna subtraction method has previously successfully been used to construct the NNLO subtraction terms for processes with up to five partons or in the leading colour approximation. However, it is challenged by the more involved subleading colour structure of the squared matrix elements in processes with six or more partons. Here, we describe the methods needed to successfully construct the NNLO subtraction terms for the subleading colour contributions to dijet production within the antenna subtraction formalism.