Study of J/ψ meson production inside jets in pp collisions at √s = 8 TeV
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
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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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 info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
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. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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Repositório Institucional da UFRGS |
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