Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV

Detalhes bibliográficos
Autor(a) principal: Sirunyan, A. M.
Data de Publicação: 2020
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/10183/217307
Resumo: The first direct, model-independent measurement is presented of the modulus of the Cabibbo– Kobayashi–Maskawa (CKM) matrix elements |Vtb |, |Vtd |, and |Vts |, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of |Vtb | > 0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values |Vtb | = 0.988 ± 0.024, and |Vtd | 2 + |Vts | 2 = 0.06 ± 0.06, where the uncertainties include both statistical and systematic components, are measured.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2021-01-14T04:10:58Z20200370-2693http://hdl.handle.net/10183/217307001120394The first direct, model-independent measurement is presented of the modulus of the Cabibbo– Kobayashi–Maskawa (CKM) matrix elements |Vtb |, |Vtd |, and |Vts |, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of |Vtb | > 0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values |Vtb | = 0.988 ± 0.024, and |Vtd | 2 + |Vts | 2 = 0.06 ± 0.06, where the uncertainties include both statistical and systematic components, are measured.application/pdfengPhysics letters. B. Amsterdam. Vol. 808 (Sept. 2020), 135609, 30 p.Aceleradores de partículasColisões proton-protonCMSPhysicsCKM matrixTop quarkMeasurement of CKM matrix elements in single top quark t-channel production in proton-proton 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:UFRGSTEXT001120394.pdf.txt001120394.pdf.txtExtracted Texttext/plain124122http://www.lume.ufrgs.br/bitstream/10183/217307/2/001120394.pdf.txt8d64af05b2d2c60229a5e9416f6dd4abMD52ORIGINAL001120394.pdfTexto completo (inglês)application/pdf1392050http://www.lume.ufrgs.br/bitstream/10183/217307/1/001120394.pdf0d3c3fa7a13cb6d35ed687893fb942bcMD5110183/2173072023-07-22 03:40:56.170635oai:www.lume.ufrgs.br:10183/217307Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2023-07-22T06:40:56Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
title Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
spellingShingle Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
CMS
Physics
CKM matrix
Top quark
title_short Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
title_full Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
title_fullStr Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
title_full_unstemmed Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 TeV
title_sort Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at √s = 13 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 Aceleradores de partículas
Colisões proton-proton
topic Aceleradores de partículas
Colisões proton-proton
CMS
Physics
CKM matrix
Top quark
dc.subject.eng.fl_str_mv CMS
Physics
CKM matrix
Top quark
description The first direct, model-independent measurement is presented of the modulus of the Cabibbo– Kobayashi–Maskawa (CKM) matrix elements |Vtb |, |Vtd |, and |Vts |, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of |Vtb | > 0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values |Vtb | = 0.988 ± 0.024, and |Vtd | 2 + |Vts | 2 = 0.06 ± 0.06, where the uncertainties include both statistical and systematic components, are measured.
publishDate 2020
dc.date.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2021-01-14T04:10:58Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/217307
dc.identifier.issn.pt_BR.fl_str_mv 0370-2693
dc.identifier.nrb.pt_BR.fl_str_mv 001120394
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001120394
url http://hdl.handle.net/10183/217307
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dc.relation.ispartof.pt_BR.fl_str_mv Physics letters. B. Amsterdam. Vol. 808 (Sept. 2020), 135609, 30 p.
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