Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/222842 |
Resumo: | The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity dependent difference (v2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (uc) and D_0 (uc) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of v2. The rapidity-averaged value is found to be v2 = 0.001±0.001 (stat)±0.003 (syst) in PbPb collisions at √sNN = 5.02 TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D_0 mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry. |
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Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2021-06-25T04:25:25Z20210370-2693http://hdl.handle.net/10183/222842001126938The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity dependent difference (v2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (uc) and D_0 (uc) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of v2. The rapidity-averaged value is found to be v2 = 0.001±0.001 (stat)±0.003 (syst) in PbPb collisions at √sNN = 5.02 TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D_0 mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry.application/pdfengPhysics letters. B. Amsterdam. Vol. 816 (May 2021), 136253, 25 p.Aceleradores de partículasMésons DColisao de ions pesadosCMSHeavy flavorCharmElectromagnetic fieldsMeasurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb 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:UFRGSTEXT001126938.pdf.txt001126938.pdf.txtExtracted Texttext/plain95598http://www.lume.ufrgs.br/bitstream/10183/222842/2/001126938.pdf.txt198ce525f594ef9fcc3538c1fb56328cMD52ORIGINAL001126938.pdfTexto completo (inglês)application/pdf984528http://www.lume.ufrgs.br/bitstream/10183/222842/1/001126938.pdfa99ef03e22fd016b3b5a02b652a84028MD5110183/2228422023-07-20 03:35:42.774189oai:www.lume.ufrgs.br:10183/222842Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-20T06:35:42Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
title |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
spellingShingle |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV Sirunyan, A. M. Aceleradores de partículas Mésons D Colisao de ions pesados CMS Heavy flavor Charm Electromagnetic fields |
title_short |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
title_full |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
title_fullStr |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
title_full_unstemmed |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb collisions at √sNN = 5.02 TeV |
title_sort |
Measurement of prompt D0 and D_0 meson azimuthal anisotropy and search for strong electric fields in PbPb 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 Mésons D Colisao de ions pesados |
topic |
Aceleradores de partículas Mésons D Colisao de ions pesados CMS Heavy flavor Charm Electromagnetic fields |
dc.subject.eng.fl_str_mv |
CMS Heavy flavor Charm Electromagnetic fields |
description |
The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity dependent difference (v2) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, v2) between D0 (uc) and D_0 (uc) mesons. Motivated by the search for evidence of this field, the CMS detector at the LHC is used to perform the first measurement of v2. The rapidity-averaged value is found to be v2 = 0.001±0.001 (stat)±0.003 (syst) in PbPb collisions at √sNN = 5.02 TeV. In addition, the influence of the collision geometry is explored by measuring the D0 and D_0 mesons v2 and triangular flow coefficient (v3) as functions of rapidity, transverse momentum (pT), and event centrality (a measure of the overlap of the two Pb nuclei). A clear centrality dependence of prompt D0 meson v2 values is observed, while the v3 is largely independent of centrality. These trends are consistent with expectations of flow driven by the initial-state geometry. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-06-25T04:25:25Z |
dc.date.issued.fl_str_mv |
2021 |
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/10183/222842 |
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0370-2693 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001126938 |
identifier_str_mv |
0370-2693 001126938 |
url |
http://hdl.handle.net/10183/222842 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 816 (May 2021), 136253, 25 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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