Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/265233 |
Resumo: | 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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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 |
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http://hdl.handle.net/10183/265233 |
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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. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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