Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV

Detalhes bibliográficos
Autor(a) principal: Sirunyan, A. M.
Data de Publicação: 2018
Outros Autores: Silveira, Gustavo Gil da, CMS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/184229
Resumo: The pseudorapidity distributions of dijets as functions of their average transverse momentum (PTave) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. A significant modification of the pPb spectra with respect to the pp spectra is observed in all pave T intervals investigated. The ratios of the pPb and pp distributions are compared to next-to-leading order perturbative quantum chromodynamics calculations with unbound nucleon and nuclear parton distribution functions (PDFs). These results give the first evidence that the gluon PDF at large Bjorken x in lead ions is strongly suppressed with respect to the PDF in unbound nucleons.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2018-10-31T02:38:00Z20180031-9007http://hdl.handle.net/10183/184229001080362The pseudorapidity distributions of dijets as functions of their average transverse momentum (PTave) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. A significant modification of the pPb spectra with respect to the pp spectra is observed in all pave T intervals investigated. The ratios of the pPb and pp distributions are compared to next-to-leading order perturbative quantum chromodynamics calculations with unbound nucleon and nuclear parton distribution functions (PDFs). These results give the first evidence that the gluon PDF at large Bjorken x in lead ions is strongly suppressed with respect to the PDF in unbound nucleons.application/pdfengPhysical review letters. Melville. Vol. 121, no. 6 (Aug. 2018), 062002, 18 p.Aceleradores de partículasCromodinâmica quânticaColisao de ions pesadosColisões proton-protonConstraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeVEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001080362.pdf.txt001080362.pdf.txtExtracted Texttext/plain87741http://www.lume.ufrgs.br/bitstream/10183/184229/2/001080362.pdf.txt37ca88f0df114cc3df322d98eb3bc8c3MD52ORIGINAL001080362.pdfTexto completo (inglês)application/pdf402551http://www.lume.ufrgs.br/bitstream/10183/184229/1/001080362.pdfdd627260f7037455bc8a457394bc1cc8MD5110183/1842292023-08-05 03:38:39.021439oai:www.lume.ufrgs.br:10183/184229Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:38:39Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
title Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
spellingShingle Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
Sirunyan, A. M.
Aceleradores de partículas
Cromodinâmica quântica
Colisao de ions pesados
Colisões proton-proton
title_short Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
title_full Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
title_fullStr Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
title_full_unstemmed Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
title_sort Constraining gluon distributions in nuclei using dijets in proton-proton and proton-pead collisions at √sNN=5.02 TeV
author Sirunyan, A. M.
author_facet Sirunyan, A. M.
Silveira, Gustavo Gil da
CMS Collaboration
author_role author
author2 Silveira, Gustavo Gil da
CMS Collaboration
author2_role author
author
dc.contributor.author.fl_str_mv Sirunyan, A. M.
Silveira, Gustavo Gil da
CMS Collaboration
dc.subject.por.fl_str_mv Aceleradores de partículas
Cromodinâmica quântica
Colisao de ions pesados
Colisões proton-proton
topic Aceleradores de partículas
Cromodinâmica quântica
Colisao de ions pesados
Colisões proton-proton
description The pseudorapidity distributions of dijets as functions of their average transverse momentum (PTave) are measured in proton-lead (pPb) and proton-proton (pp) collisions. The data samples were collected by the CMS experiment at the CERN LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. A significant modification of the pPb spectra with respect to the pp spectra is observed in all pave T intervals investigated. The ratios of the pPb and pp distributions are compared to next-to-leading order perturbative quantum chromodynamics calculations with unbound nucleon and nuclear parton distribution functions (PDFs). These results give the first evidence that the gluon PDF at large Bjorken x in lead ions is strongly suppressed with respect to the PDF in unbound nucleons.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-10-31T02:38:00Z
dc.date.issued.fl_str_mv 2018
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/184229
dc.identifier.issn.pt_BR.fl_str_mv 0031-9007
dc.identifier.nrb.pt_BR.fl_str_mv 001080362
identifier_str_mv 0031-9007
001080362
url http://hdl.handle.net/10183/184229
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review letters. Melville. Vol. 121, no. 6 (Aug. 2018), 062002, 18 p.
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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