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  1. Pubblicazioni

Cwebs beyond three loops in multiparton amplitudes

Articolo
Data di Pubblicazione:
2021
Abstract:
Correlators of Wilson-line operators in non-abelian gauge theories are known to exponentiate, and their logarithms can be organised in terms of collections of Feynman diagrams called webs. In [1] we introduced the concept of Cweb, or correlator web, which is a set of skeleton diagrams built with connected gluon correlators, and we computed the mixing matrices for all Cwebs connecting four or five Wilson lines at four loops. Here we complete the evaluation of four-loop mixing matrices, presenting the results for all Cwebs connecting two and three Wilson lines. We observe that the conjuctured column sum rule is obeyed by all the mixing matrices that appear at four-loops. We also show how low-dimensional mixing matrices can be uniquely determined from their known combinatorial properties, and provide some all-order results for selected classes of mixing matrices. Our results complete the required colour building blocks for the calculation of the soft anomalous dimension matrix at four-loop order.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
NLO Computations; QCD Phenomenology
Elenco autori:
Agarwal N.; Magnea L.; Pal S.; Tripathi A.
Autori di Ateneo:
MAGNEA Lorenzo
Link alla scheda completa:
https://iris.unito.it/handle/2318/1808677
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1808677/1390893/JHEP_21_03_188.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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Dati Generali

URL

https://link.springer.com/article/10.1007/JHEP03(2021)188

Aree Di Ricerca

Settori (4)


PE2_1 - Theory of fundamental interactions - (2024)

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Cosmologia e Universo

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Fisica delle Particelle e dei Nuclei

SCIENZE MATEMATICHE, CHIMICHE, FISICHE - Laboratori innovativi, strumentazione e modellizzazione fisica
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