Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV

A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb⁻¹. The result is obtained from a simultaneous...

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Autores: Tumasyan, Armen, Silveira, Gustavo Gil da, Bernardes, César Augusto, CMS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
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:10183/265233
Acceso en línea:http://hdl.handle.net/10183/265233
Access Level:acceso abierto
Palabra clave:Aceleradores de partículas
Colisões proton-proton
Bosons Z
CMS
Z boson
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spelling 2023-09-26T03:36:15Z20230370-2693http://hdl.handle.net/10183/265233001175932A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb⁻¹. The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be 523 ± 3 (stat) ± 16 (syst)MeV. This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments.application/pdfengPhysics letters. B. Amsterdam. Vol. 842 (July 2023), 137563, 22 p.Aceleradores de partículasColisões proton-protonBosons ZCMSZ bosonPrecision measurement of the Z boson invisible width 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:UFRGSTumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS CollaborationTEXT001175932.pdf.txt001175932.pdf.txtExtracted Texttext/plain88768http://www.lume.ufrgs.br/bitstream/10183/265233/2/001175932.pdf.txt8faa864fbdf615fe7d368553a5fc4592MD52ORIGINAL001175932.pdfTexto completo (inglês)application/pdf887858http://www.lume.ufrgs.br/bitstream/10183/265233/1/001175932.pdf1a6e5bcb6073f3dbc9187eaa40fa25efMD5110183/2652332023-09-27 03:36:44.544314oai:www.lume.ufrgs.br:10183/265233Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-09-27T06:36:44Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
title Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
spellingShingle Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
Tumasyan, Armen
Aceleradores de partículas
Colisões proton-proton
Bosons Z
CMS
Z boson
title_short Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
title_full Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
title_fullStr Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
title_full_unstemmed Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
title_sort Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
dc.creator.none.fl_str_mv Tumasyan, Armen
Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
author Tumasyan, Armen
author_facet Tumasyan, Armen
Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
author_role author
author2 Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
author2_role author
author
author
dc.subject.por.fl_str_mv Aceleradores de partículas
Colisões proton-proton
Bosons Z
topic Aceleradores de partículas
Colisões proton-proton
Bosons Z
CMS
Z boson
dc.subject.eng.fl_str_mv CMS
Z boson
description A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb⁻¹. The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be 523 ± 3 (stat) ± 16 (syst)MeV. This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments.
publishDate 2023
dc.date.accessioned.fl_str_mv 2023-09-26T03:36:15Z
dc.date.issued.fl_str_mv 2023
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.issn.pt_BR.fl_str_mv 0370-2693
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identifier_str_mv 0370-2693
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url http://hdl.handle.net/10183/265233
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physics letters. B. Amsterdam. Vol. 842 (July 2023), 137563, 22 p.
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eu_rights_str_mv openAccess
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