Automation of antenna subtraction in colour space: gluonic processes

Chen, X.; Gehrmann, T.; Glover, E.W.N.; Huss, A.; Marcoli, M.

Abstract

We present the colourful antenna subtraction method, a reformulation of the antenna subtraction scheme for next-to-next-to-leading order (NNLO) calculations in QCD. The aim of this new approach is to achieve a general and process-independent construction of the subtraction infrastructure at NNLO. We rely on the predictability of the infrared singularity structure of one- and two-loop amplitudes in colour space to generate virtual subtraction terms and, subsequently, we define an automatable procedure to systematically infer the expression of the real subtraction terms, guided by the correspondence between unintegrated and integrated antenna functions. To demonstrate the applicability of the described approach, we compute the full colour NNLO correction to gluonic three-jet production pp(gg) → ggg, in the gluons-only assumption.

Citation

Chen, X., Gehrmann, T., Glover, E., Huss, A., & Marcoli, M. (2022). Automation of antenna subtraction in colour space: gluonic processes. Journal of High Energy Physics, 2022(10), Article 99. https://doi.org/10.1007/jhep10%282022%29099

• Journal Article Type: Article
• Acceptance Date: Oct 7, 2022
• Online Publication Date: Oct 14, 2022
• Publication Date: 2022-10
• Deposit Date: Oct 17, 2022
• Publicly Available Date: Oct 17, 2022
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2022
• Issue: 10
• Article Number: 99
• DOI: https://doi.org/10.1007/jhep10%282022%29099
• Public URL: https://durham-repository.worktribe.com/output/1189028