Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 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/10183/179601
Resumo: An analysis of the bottom baryon decay Λb → J=ψ ð→ μþ μ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at √s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00 ± 0.06ðstatÞ± 0.06ðsystÞ and the parity-violating asymmetry parameter is determined to be 0.14 ± 0.14ðstatÞ± 0.10ðsystÞ. The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2018-06-21T02:32:04Z20181550-7998http://hdl.handle.net/10183/179601001066846An analysis of the bottom baryon decay Λb → J=ψ ð→ μþ μ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at √s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00 ± 0.06ðstatÞ± 0.06ðsystÞ and the parity-violating asymmetry parameter is determined to be 0.14 ± 0.14ðstatÞ± 0.10ðsystÞ. The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.application/pdfengPhysical review. D, Particles, fields, gravitation, and cosmology. College Park. Vol. 97, no. 7 (Apr. 2018), 072010, 20 p.Colisões proton-protonAceleradores de partículasCromodinâmica quânticaMeasurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 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:UFRGSORIGINAL001066846.pdf001066846.pdfTexto completo (inglês)application/pdf485168http://www.lume.ufrgs.br/bitstream/10183/179601/1/001066846.pdf5f0e01de491f3bc9e2a972eca107c8dbMD51TEXT001066846.pdf.txt001066846.pdf.txtExtracted Texttext/plain92020http://www.lume.ufrgs.br/bitstream/10183/179601/2/001066846.pdf.txtbf424c3909e74890a32f0c867916a11eMD5210183/1796012023-08-05 03:38:38.071953oai:www.lume.ufrgs.br:10183/179601Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:38:38Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
title Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
spellingShingle Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
Sirunyan, A. M.
Colisões proton-proton
Aceleradores de partículas
Cromodinâmica quântica
title_short Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
title_full Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
title_fullStr Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
title_full_unstemmed Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 8 TeV
title_sort Measurement of the Λb polarization and angular parameters in Λb → J=ψΛ decays from pp collisions at √s=7 and 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 Colisões proton-proton
Aceleradores de partículas
Cromodinâmica quântica
topic Colisões proton-proton
Aceleradores de partículas
Cromodinâmica quântica
description An analysis of the bottom baryon decay Λb → J=ψ ð→ μþ μ−ÞΛð→ pπ−Þ is performed to measure the Λb polarization and three angular parameters in data from pp collisions at √s=7 and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The Λb polarization is measured to be 0.00 ± 0.06ðstatÞ± 0.06ðsystÞ and the parity-violating asymmetry parameter is determined to be 0.14 ± 0.14ðstatÞ± 0.10ðsystÞ. The measurements are compared to various theoretical predictions, including those from perturbative quantum chromodynamics.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-06-21T02:32:04Z
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
format article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/179601
dc.identifier.issn.pt_BR.fl_str_mv 1550-7998
dc.identifier.nrb.pt_BR.fl_str_mv 001066846
identifier_str_mv 1550-7998
001066846
url http://hdl.handle.net/10183/179601
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review. D, Particles, fields, gravitation, and cosmology. College Park. Vol. 97, no. 7 (Apr. 2018), 072010, 20 p.
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eu_rights_str_mv openAccess
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institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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