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Strongly-ordered infrared counterterms from factorisation

Articolo
Data di Pubblicazione:
2024
Abstract:
In the context of infrared subtraction algorithms beyond next-to-leading order, it becomes necessary to consider multiple infrared limits of scattering amplitudes, in which several particles become soft or collinear in a strongly-ordered sequence. We study these limits from the point of view of infrared factorisation, and we provide general definitions of strongly-ordered soft and collinear kernels in terms of gauge-invariant operator matrix elements. With these definitions in hand, it is possible to construct local subtraction counterterms for strongly-ordered configurations. Because of their factorised structure, these counterterms cancel infrared poles of real-virtual contributions by construction. We test these ideas at tree level for multiple emissions, and at one loop for single and double emissions, contributing to NNLO and N3LO distributions, respectively.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
High Energy Physics - Phenomenology; High Energy Physics - Phenomenology
Elenco autori:
Lorenzo Magnea; Calum Milloy; Chiara Signorile-Signorile; Paolo Torrielli
Autori di Ateneo:
MAGNEA Lorenzo
TORRIELLI Paolo
Link alla scheda completa:
https://iris.unito.it/handle/2318/2002030
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/2002030/1352528/2403.11975.pdf
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
Progetto:
Compagnia di San Paolo - Bando ex-post - Anno 2020 - "Automated subtraction of DiVergences..." - Cda 21/12/2021
  • Dati Generali
  • Aree Di Ricerca

Dati Generali

URL

http://arxiv.org/abs/2403.11975v1

Aree Di Ricerca

Settori (4)


PE2_2 - Phenomenology of fundamental interactions - (2022)

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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