Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 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/10183/214611 |
Resumo: | The first study of charm quark diffusion with respect to the jet axis in heavy ion collisions is presented. The measurement is performed using jets with pTjet>60 GeV/c and D0 mesons with pTD>4 GeV/c in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of sNN=5.02 TeV, recorded by the CMS detector at the LHC. The radial distribution of D0 mesons with respect to the jet axis is sensitive to the production mechanisms of the meson, as well as to the energy loss and diffusion processes undergone by its parent parton inside the strongly interacting medium produced in Pb-Pb collisions. When compared to Monte Carlo event generators, the radial distribution in pp collisions is found to be well described by pythia, while the slope of the distribution predicted by sherpa is steeper than that of the data. In Pb-Pb collisions, compared to the pp results, the D0 meson distribution for 4<pTD<20 GeV/c hints at a larger distance on average with respect to the jet axis, reflecting a diffusion of charm quarks in the medium created in heavy ion collisions. At higher pTD, the Pb-Pb and pp radial distributions are found to be similar. |
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Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2020-11-04T04:07:58Z20200031-9007http://hdl.handle.net/10183/214611001118241The first study of charm quark diffusion with respect to the jet axis in heavy ion collisions is presented. The measurement is performed using jets with pTjet>60 GeV/c and D0 mesons with pTD>4 GeV/c in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of sNN=5.02 TeV, recorded by the CMS detector at the LHC. The radial distribution of D0 mesons with respect to the jet axis is sensitive to the production mechanisms of the meson, as well as to the energy loss and diffusion processes undergone by its parent parton inside the strongly interacting medium produced in Pb-Pb collisions. When compared to Monte Carlo event generators, the radial distribution in pp collisions is found to be well described by pythia, while the slope of the distribution predicted by sherpa is steeper than that of the data. In Pb-Pb collisions, compared to the pp results, the D0 meson distribution for 4<pTD<20 GeV/c hints at a larger distance on average with respect to the jet axis, reflecting a diffusion of charm quarks in the medium created in heavy ion collisions. At higher pTD, the Pb-Pb and pp radial distributions are found to be similar.application/pdfengPhysical review letters. Melville. Vol. 125, no. 10 (Sept. 2020), 102001, 18 p.Aceleradores de partículasColisões proton-protonColisao de ions pesadosStudies of charm quark diffusion inside jets using Pb-Pb and pp 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:UFRGSTEXT001118241.pdf.txt001118241.pdf.txtExtracted Texttext/plain87269http://www.lume.ufrgs.br/bitstream/10183/214611/2/001118241.pdf.txte172fc702c98330d9d3d1755ffcf62ccMD52ORIGINAL001118241.pdfTexto completo (inglês)application/pdf541161http://www.lume.ufrgs.br/bitstream/10183/214611/1/001118241.pdf41a2d5f8cab51b362156ba94c8275fc4MD5110183/2146112023-08-02 03:33:01.004538oai:www.lume.ufrgs.br:10183/214611Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-02T06:33:01Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
title |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
spellingShingle |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV Sirunyan, A. M. Aceleradores de partículas Colisões proton-proton Colisao de ions pesados |
title_short |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
title_full |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
title_fullStr |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
title_full_unstemmed |
Studies of charm quark diffusion inside jets using Pb-Pb and pp collisions at √snn=5.02 TeV |
title_sort |
Studies of charm quark diffusion inside jets using Pb-Pb and pp 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 Colisões proton-proton Colisao de ions pesados |
topic |
Aceleradores de partículas Colisões proton-proton Colisao de ions pesados |
description |
The first study of charm quark diffusion with respect to the jet axis in heavy ion collisions is presented. The measurement is performed using jets with pTjet>60 GeV/c and D0 mesons with pTD>4 GeV/c in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of sNN=5.02 TeV, recorded by the CMS detector at the LHC. The radial distribution of D0 mesons with respect to the jet axis is sensitive to the production mechanisms of the meson, as well as to the energy loss and diffusion processes undergone by its parent parton inside the strongly interacting medium produced in Pb-Pb collisions. When compared to Monte Carlo event generators, the radial distribution in pp collisions is found to be well described by pythia, while the slope of the distribution predicted by sherpa is steeper than that of the data. In Pb-Pb collisions, compared to the pp results, the D0 meson distribution for 4<pTD<20 GeV/c hints at a larger distance on average with respect to the jet axis, reflecting a diffusion of charm quarks in the medium created in heavy ion collisions. At higher pTD, the Pb-Pb and pp radial distributions are found to be similar. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-11-04T04:07:58Z |
dc.date.issued.fl_str_mv |
2020 |
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/10183/214611 |
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0031-9007 |
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001118241 |
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0031-9007 001118241 |
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http://hdl.handle.net/10183/214611 |
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eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review letters. Melville. Vol. 125, no. 10 (Sept. 2020), 102001, 18 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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