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dc.contributor.author
Catani, Stefano
dc.contributor.author
de Florian, Daniel Enrique
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Devoto, Simone
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Grazzini, Massimiliano
dc.contributor.author
Mazzitelli, Javier
dc.date.available
2024-02-28T12:03:56Z
dc.date.issued
2023-11
dc.identifier.citation
Catani, Stefano; de Florian, Daniel Enrique; Devoto, Simone; Grazzini, Massimiliano; Mazzitelli, Javier; Soft-gluon effective coupling: perturbative results and the large-nF limit to all orders; Springer; Journal of High Energy Physics; 2023; 11; 11-2023; 1-24
dc.identifier.issn
1029-8479
dc.identifier.uri
http://hdl.handle.net/11336/228734
dc.description.abstract
We consider extensions of the soft-gluon effective coupling that generalize the Catani-Marchesini-Webber (CMW) coupling in the context of soft-gluon resummation beyond the next-to-leading logarithmic accuracy. Starting from the probability density of correlated soft emission in d dimensions we introduce a class of soft couplings relevant for resummed QCD calculations of hard-scattering observables. We show that at the conformal point, where the d-dimensional QCD β function vanishes, all these effective couplings are equal and they are also equal to the cusp anomalous dimension. We present explicit results in d dimensions for the soft-emission probability density and the soft couplings at the second-order in the QCD coupling α S. In d = 4 dimensions we obtain the explicit relation between the soft couplings at O (αS3). Finally, we study the structure of the soft coupling in the large-nF limit and we present explicit expressions to all orders in perturbation theory. We also check that, at the conformal point, our large-nF results agree with the known result of the cusp anomalous dimension.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HIGHER-ORDER PERTURBATIVE CALCULATIONS
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RESUMMATION
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THE STRONG COUPLING
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Física de Partículas y Campos
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Soft-gluon effective coupling: perturbative results and the large-nF limit to all orders
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-28T09:57:47Z
dc.journal.volume
2023
dc.journal.number
11
dc.journal.pagination
1-24
dc.journal.pais
Italia
dc.description.fil
Fil: Catani, Stefano. Università degli Studi di Firenze; Italia
dc.description.fil
Fil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias Físicas. - Universidad Nacional de San Martín. Instituto de Ciencias Físicas; Argentina
dc.description.fil
Fil: Devoto, Simone. Università degli Studi di Milano; Italia
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Fil: Grazzini, Massimiliano. Universitat Zurich; Suiza
dc.description.fil
Fil: Mazzitelli, Javier. Universitat Zurich; Suiza
dc.journal.title
Journal of High Energy Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/JHEP11(2023)217
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/JHEP11(2023)217
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