Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV

Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯¯bb¯¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj) and their ratio are presented. The data were collected in proton-proton collis...

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Detalles Bibliográficos
Autores: Sirunyan, A. M., Silveira, Gustavo Gil da, CMS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:Brasil
Institución:Universidade Federal do Rio Grande do Sul (UFRGS)
Repositorio:Repositório Institucional da UFRGS
Idioma:inglés
OAI Identifier:oai:www.lume.ufrgs.br:10183/214614
Acceso en línea:http://hdl.handle.net/10183/214614
Access Level:acceso abierto
Palabra clave:Aceleradores de partículas
Colisões proton-proton
Hadron-Hadron scattering (experiments)
Jets
Top physics
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spelling 2020-11-04T04:08:05Z20201029-8479http://hdl.handle.net/10183/214614001117170Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯¯bb¯¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt¯¯bb¯¯ are determined from the product of the σtt¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower.application/pdfengThe journal of high energy physics. Trieste. No. 7 (July 2020), 125, 46 p.Aceleradores de partículasColisões proton-protonHadron-Hadron scattering (experiments)JetsTop physicsMeasurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 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:UFRGSSirunyan, A. M.Silveira, Gustavo Gil daCMS CollaborationTEXT001117170.pdf.txt001117170.pdf.txtExtracted Texttext/plain121598http://www.lume.ufrgs.br/bitstream/10183/214614/2/001117170.pdf.txt626f9fe7159c359ddc9f985ff07a36bcMD52ORIGINAL001117170.pdfTexto completo (inglês)application/pdf525206http://www.lume.ufrgs.br/bitstream/10183/214614/1/001117170.pdf9b22ff9285411ea6d81160d4fc775a6fMD5110183/2146142023-08-03 03:34:02.269411oai:www.lume.ufrgs.br:10183/214614Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-08-03T06:34:02Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
title Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
spellingShingle Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
Hadron-Hadron scattering (experiments)
Jets
Top physics
title_short Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
title_full Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
title_fullStr Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
title_full_unstemmed Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
title_sort Measurement of the cross section for tt¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
dc.creator.none.fl_str_mv Sirunyan, A. M.
Silveira, Gustavo Gil da
CMS Collaboration
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.subject.por.fl_str_mv Aceleradores de partículas
Colisões proton-proton
topic Aceleradores de partículas
Colisões proton-proton
Hadron-Hadron scattering (experiments)
Jets
Top physics
dc.subject.eng.fl_str_mv Hadron-Hadron scattering (experiments)
Jets
Top physics
description Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt¯¯bb¯¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt¯¯bb¯¯ are determined from the product of the σtt¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower.
publishDate 2020
dc.date.accessioned.fl_str_mv 2020-11-04T04:08:05Z
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
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/214614
dc.identifier.issn.pt_BR.fl_str_mv 1029-8479
dc.identifier.nrb.pt_BR.fl_str_mv 001117170
identifier_str_mv 1029-8479
001117170
url http://hdl.handle.net/10183/214614
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv The journal of high energy physics. Trieste. No. 7 (July 2020), 125, 46 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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