Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD

Autores
Rodrigo, Germán; Catani, Stefano; de Florian, Daniel Enrique; Vogelsang, Werner
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange-antistrange asymmetry s(x) - s̄(x) in the nucleon's sea. © 2004 Elsevier B.V. All rights reserved.
Fil: Rodrigo, Germán. Csic-uv - Instituto de F& Alemania
Fil: Catani, Stefano. Università degli Studi di Firenze; Italia
Fil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Vogelsang, Werner. Riken Bnl Research Center; Alemania
Materia
Strange
Splitting
Collinear
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/75587
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/75587
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCDRodrigo, GermánCatani, Stefanode Florian, Daniel EnriqueVogelsang, WernerStrangeSplittingCollinearhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange-antistrange asymmetry s(x) - s̄(x) in the nucleon's sea. © 2004 Elsevier B.V. All rights reserved.Fil: Rodrigo, Germán. Csic-uv - Instituto de F& AlemaniaFil: Catani, Stefano. Università degli Studi di Firenze; ItaliaFil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Vogelsang, Werner. Riken Bnl Research Center; AlemaniaNorth-holland2004-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/75587Rodrigo, Germán; Catani, Stefano; de Florian, Daniel Enrique; Vogelsang, Werner; Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD; North-holland; Nuclear Physics B - Proceedings Supplements; 135; 1-3 SPEC.ISS.; 10-2004; 188-1920920-5632CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.nuclphysbps.2004.09.048info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:59Zoai:ri.conicet.gov.ar:11336/75587instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:11:00.0CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
title Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
spellingShingle Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
Rodrigo, Germán
Strange
Splitting
Collinear
title_short Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
title_full Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
title_fullStr Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
title_full_unstemmed Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
title_sort Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD
dc.creator.none.fl_str_mv Rodrigo, Germán
Catani, Stefano
de Florian, Daniel Enrique
Vogelsang, Werner
author Rodrigo, Germán
author_facet Rodrigo, Germán
Catani, Stefano
de Florian, Daniel Enrique
Vogelsang, Werner
author_role author
author2 Catani, Stefano
de Florian, Daniel Enrique
Vogelsang, Werner
author2_role author
author
author
dc.subject.none.fl_str_mv Strange
Splitting
Collinear
topic Strange
Splitting
Collinear
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange-antistrange asymmetry s(x) - s̄(x) in the nucleon's sea. © 2004 Elsevier B.V. All rights reserved.
Fil: Rodrigo, Germán. Csic-uv - Instituto de F& Alemania
Fil: Catani, Stefano. Università degli Studi di Firenze; Italia
Fil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Vogelsang, Werner. Riken Bnl Research Center; Alemania
description We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange-antistrange asymmetry s(x) - s̄(x) in the nucleon's sea. © 2004 Elsevier B.V. All rights reserved.
publishDate 2004
dc.date.none.fl_str_mv 2004-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/75587
Rodrigo, Germán; Catani, Stefano; de Florian, Daniel Enrique; Vogelsang, Werner; Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD; North-holland; Nuclear Physics B - Proceedings Supplements; 135; 1-3 SPEC.ISS.; 10-2004; 188-192
0920-5632
CONICET Digital
CONICET
url http://hdl.handle.net/11336/75587
identifier_str_mv Rodrigo, Germán; Catani, Stefano; de Florian, Daniel Enrique; Vogelsang, Werner; Collinear splitting, parton evolution and the strange-quark asymmetry of the nucleon in NNLO QCD; North-holland; Nuclear Physics B - Proceedings Supplements; 135; 1-3 SPEC.ISS.; 10-2004; 188-192
0920-5632
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nuclphysbps.2004.09.048
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv North-holland
publisher.none.fl_str_mv North-holland
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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