Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV

Detalhes bibliográficos
Autor(a) principal: Sirunyan, A. M.
Data de Publicação: 2020
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/10183/222868
Resumo: A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at √s = 8 TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y| < 1 are contained in jets with pseudorapidity |ηjet| < 1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2021-06-25T04:26:11Z20200370-2693http://hdl.handle.net/10183/222868001122956A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at √s = 8 TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y| < 1 are contained in jets with pseudorapidity |ηjet| < 1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.application/pdfengPhysics letters. B. Amsterdam. Vol. 804 (May 2020), 135409, 24 p.Aceleradores de partículasColisões proton-protonMésons psiCMSJ/psi MesonsJetsStudy of J/ψ meson production inside jets in pp collisions at √s = 8 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:UFRGSTEXT001122956.pdf.txt001122956.pdf.txtExtracted Texttext/plain102407http://www.lume.ufrgs.br/bitstream/10183/222868/2/001122956.pdf.txtf9370754f5aca2015fbc1bc4a7169d64MD52ORIGINAL001122956.pdfTexto completo (inglês)application/pdf855229http://www.lume.ufrgs.br/bitstream/10183/222868/1/001122956.pdf145e4ce0b9b8c8aebbbad15e62129bf1MD5110183/2228682023-08-04 03:34:28.827224oai:www.lume.ufrgs.br:10183/222868Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-04T06:34:28Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
title Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
spellingShingle Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
Mésons psi
CMS
J/psi Mesons
Jets
title_short Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
title_full Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
title_fullStr Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
title_full_unstemmed Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
title_sort Study of J/ψ meson production inside jets in pp collisions at √s = 8 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
Colisões proton-proton
Mésons psi
topic Aceleradores de partículas
Colisões proton-proton
Mésons psi
CMS
J/psi Mesons
Jets
dc.subject.eng.fl_str_mv CMS
J/psi Mesons
Jets
description A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at √s = 8 TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb−1 collected with the CMS detector at the LHC. For events with at least one observed jet, the angular separation between the J/ψ meson and the jet is used to test whether the J/ψ meson is part of the jet. The analysis shows that most prompt J/ψ mesons having energy above 15 GeV and rapidity |y| < 1 are contained in jets with pseudorapidity |ηjet| < 1. The differential distributions of the probability to have a J/ψ meson contained in a jet as a function of jet energy for a fixed J/ψ energy fraction are compared to a theoretical model using the fragmenting jet function approach. The data agree best with fragmenting jet function calculations that use a long-distance matrix element parameter set in which prompt J/ψ mesons are predicted to be unpolarized. This technique demonstrates a new way to test predictions for prompt J/ψ production using nonrelativistic quantum chromodynamics.
publishDate 2020
dc.date.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2021-06-25T04:26:11Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/222868
dc.identifier.issn.pt_BR.fl_str_mv 0370-2693
dc.identifier.nrb.pt_BR.fl_str_mv 001122956
identifier_str_mv 0370-2693
001122956
url http://hdl.handle.net/10183/222868
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physics letters. B. Amsterdam. Vol. 804 (May 2020), 135409, 24 p.
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eu_rights_str_mv openAccess
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