Diphoton production at the LHC: a QCD study up to NNLO

Autores
Catani, Stefano; Cieri, Leandro; de Florian, Daniel Enrique; Ferrera, Giancarlo; Grazzini, Massimiliano
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We consider the production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results obtained within the standard and smooth cone isolation criteria, by studying the dependence on the isolation parameters. We highlight the role of different partonic subprocesses within the two isolation criteria, and we show that they produce large radiative corrections for both criteria. Smooth cone isolation is a consistent procedure to compute QCD radiative corrections at NLO and beyond. If photon isolation is sufficiently tight, we show that the NLO results for the two isolation procedures are consistent with each other within their perturbative uncertainties. We then extend our study to NNLO by using smooth cone isolation. We discuss the impact of the NNLO corrections and the corresponding perturbative uncertainties for both fiducial cross sections and distributions, and we comment on the comparison with some LHC data. Throughout our study we remark on the main features that are produced by the kinematical selection cuts that are applied to the photons. In particular, we examine soft-gluon singularities that appear in the perturbative computations of the invariant mass distribution of the photon pair, the transverse-momentum spectra of the photons, and the fiducial cross section with asymmetric and symmetric photon transverse-momentum cuts, and we present their behaviour in analytic form.
Fil: Catani, Stefano. Universidad de Florencia; Italia
Fil: Cieri, Leandro. Istituto Nazionale di Fisica Nucleare; Italia. Universitat Zurich; Suiza
Fil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Fil: Ferrera, Giancarlo. Università degli Studi di Milano; Italia
Fil: Grazzini, Massimiliano. Universitat Zurich; Suiza
Materia
QCD PHENOMENOLOGY
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:11336/99271
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Diphoton production at the LHC: a QCD study up to NNLOCatani, StefanoCieri, Leandrode Florian, Daniel EnriqueFerrera, GiancarloGrazzini, MassimilianoQCD PHENOMENOLOGYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We consider the production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results obtained within the standard and smooth cone isolation criteria, by studying the dependence on the isolation parameters. We highlight the role of different partonic subprocesses within the two isolation criteria, and we show that they produce large radiative corrections for both criteria. Smooth cone isolation is a consistent procedure to compute QCD radiative corrections at NLO and beyond. If photon isolation is sufficiently tight, we show that the NLO results for the two isolation procedures are consistent with each other within their perturbative uncertainties. We then extend our study to NNLO by using smooth cone isolation. We discuss the impact of the NNLO corrections and the corresponding perturbative uncertainties for both fiducial cross sections and distributions, and we comment on the comparison with some LHC data. Throughout our study we remark on the main features that are produced by the kinematical selection cuts that are applied to the photons. In particular, we examine soft-gluon singularities that appear in the perturbative computations of the invariant mass distribution of the photon pair, the transverse-momentum spectra of the photons, and the fiducial cross section with asymmetric and symmetric photon transverse-momentum cuts, and we present their behaviour in analytic form.Fil: Catani, Stefano. Universidad de Florencia; ItaliaFil: Cieri, Leandro. Istituto Nazionale di Fisica Nucleare; Italia. Universitat Zurich; SuizaFil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; ArgentinaFil: Ferrera, Giancarlo. Università degli Studi di Milano; ItaliaFil: Grazzini, Massimiliano. Universitat Zurich; SuizaSpringer2018-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/99271Catani, Stefano; Cieri, Leandro; de Florian, Daniel Enrique; Ferrera, Giancarlo; Grazzini, Massimiliano; Diphoton production at the LHC: a QCD study up to NNLO; Springer; Journal of High Energy Physics; 2018; 4; 4-2018; 1-761029-84791126-6708CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/JHEP04(2018)142info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2FJHEP04%282018%29142info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:46Zoai:ri.conicet.gov.ar:11336/99271instacron: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 09:44:47.114CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Diphoton production at the LHC: a QCD study up to NNLO
title Diphoton production at the LHC: a QCD study up to NNLO
spellingShingle Diphoton production at the LHC: a QCD study up to NNLO
Catani, Stefano
QCD PHENOMENOLOGY
title_short Diphoton production at the LHC: a QCD study up to NNLO
title_full Diphoton production at the LHC: a QCD study up to NNLO
title_fullStr Diphoton production at the LHC: a QCD study up to NNLO
title_full_unstemmed Diphoton production at the LHC: a QCD study up to NNLO
title_sort Diphoton production at the LHC: a QCD study up to NNLO
dc.creator.none.fl_str_mv Catani, Stefano
Cieri, Leandro
de Florian, Daniel Enrique
Ferrera, Giancarlo
Grazzini, Massimiliano
author Catani, Stefano
author_facet Catani, Stefano
Cieri, Leandro
de Florian, Daniel Enrique
Ferrera, Giancarlo
Grazzini, Massimiliano
author_role author
author2 Cieri, Leandro
de Florian, Daniel Enrique
Ferrera, Giancarlo
Grazzini, Massimiliano
author2_role author
author
author
author
dc.subject.none.fl_str_mv QCD PHENOMENOLOGY
topic QCD PHENOMENOLOGY
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 production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results obtained within the standard and smooth cone isolation criteria, by studying the dependence on the isolation parameters. We highlight the role of different partonic subprocesses within the two isolation criteria, and we show that they produce large radiative corrections for both criteria. Smooth cone isolation is a consistent procedure to compute QCD radiative corrections at NLO and beyond. If photon isolation is sufficiently tight, we show that the NLO results for the two isolation procedures are consistent with each other within their perturbative uncertainties. We then extend our study to NNLO by using smooth cone isolation. We discuss the impact of the NNLO corrections and the corresponding perturbative uncertainties for both fiducial cross sections and distributions, and we comment on the comparison with some LHC data. Throughout our study we remark on the main features that are produced by the kinematical selection cuts that are applied to the photons. In particular, we examine soft-gluon singularities that appear in the perturbative computations of the invariant mass distribution of the photon pair, the transverse-momentum spectra of the photons, and the fiducial cross section with asymmetric and symmetric photon transverse-momentum cuts, and we present their behaviour in analytic form.
Fil: Catani, Stefano. Universidad de Florencia; Italia
Fil: Cieri, Leandro. Istituto Nazionale di Fisica Nucleare; Italia. Universitat Zurich; Suiza
Fil: de Florian, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Fil: Ferrera, Giancarlo. Università degli Studi di Milano; Italia
Fil: Grazzini, Massimiliano. Universitat Zurich; Suiza
description We consider the production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results obtained within the standard and smooth cone isolation criteria, by studying the dependence on the isolation parameters. We highlight the role of different partonic subprocesses within the two isolation criteria, and we show that they produce large radiative corrections for both criteria. Smooth cone isolation is a consistent procedure to compute QCD radiative corrections at NLO and beyond. If photon isolation is sufficiently tight, we show that the NLO results for the two isolation procedures are consistent with each other within their perturbative uncertainties. We then extend our study to NNLO by using smooth cone isolation. We discuss the impact of the NNLO corrections and the corresponding perturbative uncertainties for both fiducial cross sections and distributions, and we comment on the comparison with some LHC data. Throughout our study we remark on the main features that are produced by the kinematical selection cuts that are applied to the photons. In particular, we examine soft-gluon singularities that appear in the perturbative computations of the invariant mass distribution of the photon pair, the transverse-momentum spectra of the photons, and the fiducial cross section with asymmetric and symmetric photon transverse-momentum cuts, and we present their behaviour in analytic form.
publishDate 2018
dc.date.none.fl_str_mv 2018-04
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/11336/99271
Catani, Stefano; Cieri, Leandro; de Florian, Daniel Enrique; Ferrera, Giancarlo; Grazzini, Massimiliano; Diphoton production at the LHC: a QCD study up to NNLO; Springer; Journal of High Energy Physics; 2018; 4; 4-2018; 1-76
1029-8479
1126-6708
CONICET Digital
CONICET
url http://hdl.handle.net/11336/99271
identifier_str_mv Catani, Stefano; Cieri, Leandro; de Florian, Daniel Enrique; Ferrera, Giancarlo; Grazzini, Massimiliano; Diphoton production at the LHC: a QCD study up to NNLO; Springer; Journal of High Energy Physics; 2018; 4; 4-2018; 1-76
1029-8479
1126-6708
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/JHEP04(2018)142
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2FJHEP04%282018%29142
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 Springer
publisher.none.fl_str_mv Springer
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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