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

Bibliographic Details
Main Author: Tumasyan, Armen
Publication Date: 2023
Other Authors: Silveira, Gustavo Gil da, Bernardes, César Augusto, CMS Collaboration
Format: Article
Language: eng
Source: Repositório Institucional da UFRGS
Download full: http://hdl.handle.net/10183/265233
Summary: 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.
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spelling Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2023-09-26T03:36:15Z20230370-2693http://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:UFRGSTEXT001175932.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 de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar: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
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.contributor.author.fl_str_mv Tumasyan, Armen
Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
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
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/10183/265233
dc.identifier.issn.pt_BR.fl_str_mv 0370-2693
dc.identifier.nrb.pt_BR.fl_str_mv 001175932
identifier_str_mv 0370-2693
001175932
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.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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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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