KIT | KIT-Bibliothek | Impressum | Datenschutz

Automation of antenna subtraction in colour space: gluonic processes

Chen, X. 1,2; Gehrmann, T.; Glover, E. W. N.; Huss, A.; Marcoli, M.
1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)
2 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

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.


Volltext §
DOI: 10.5445/IR/1000152092
Veröffentlicht am 27.10.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Theoretische Physik (ITP)
Publikationstyp Forschungsbericht/Preprint
Publikationsjahr 2022
Sprache Englisch
Identifikator KITopen-ID: 1000152092
Vorab online veröffentlicht am 25.03.2022
Schlagwörter QCD, NNLO Computations, Antenna subtraction
Nachgewiesen in arXiv
Dimensions
Relationen in KITopen
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page