Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/211750 |
Resumo: | A measurement is presented of differential cross sections for t-channel single top quark and antiquark production in proton–proton collisions at a centre-of-mass energy of 13TeV by the CMS experiment at the LHC. From a data set corresponding to an integrated luminosity of 35.9fb−1, events containing one muon or electron and two or three jets are analysed. The cross section is measured as a function of the top quark transverse momentum (pT), rapidity, and polarisation angle, the charged lepton pT and rapidity, and the pT of the W boson from the top quark decay. In addition, the charge ratio is measured differentially as a function of the top quark, charged lepton, and W boson kinematic observables. The results are found to be in agreement with standard model predictions using various next-to-leading-order event generators and sets of parton distribution functions. Additionally, the spin asymmetry, sensitive to the top quark polarisation, is determined from the differential distribution of the polarisation angle at parton level to be 0.440±0.070, in agreement with the standard model prediction. |
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Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2020-07-11T03:52:17Z20201434-6044http://hdl.handle.net/10183/211750001115711A measurement is presented of differential cross sections for t-channel single top quark and antiquark production in proton–proton collisions at a centre-of-mass energy of 13TeV by the CMS experiment at the LHC. From a data set corresponding to an integrated luminosity of 35.9fb−1, events containing one muon or electron and two or three jets are analysed. The cross section is measured as a function of the top quark transverse momentum (pT), rapidity, and polarisation angle, the charged lepton pT and rapidity, and the pT of the W boson from the top quark decay. In addition, the charge ratio is measured differentially as a function of the top quark, charged lepton, and W boson kinematic observables. The results are found to be in agreement with standard model predictions using various next-to-leading-order event generators and sets of parton distribution functions. Additionally, the spin asymmetry, sensitive to the top quark polarisation, is determined from the differential distribution of the polarisation angle at parton level to be 0.440±0.070, in agreement with the standard model prediction.application/pdfengThe European physical journal. C, Particles and fields. Berlin. Vol. 80, no. 5 (May 2020), 370, 37 p.Aceleradores de partículasColisões proton-protonMeasurement of differential cross sections and charge ratios for t-channel single top quark 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:UFRGSTEXT001115711.pdf.txt001115711.pdf.txtExtracted Texttext/plain141250http://www.lume.ufrgs.br/bitstream/10183/211750/2/001115711.pdf.txtaf192bc71101e5bc18db35d26bbf853dMD52ORIGINAL001115711.pdfTexto completo (inglês)application/pdf1349517http://www.lume.ufrgs.br/bitstream/10183/211750/1/001115711.pdf505f54eef980ecda563f0fbe45ab5eaeMD5110183/2117502023-08-03 03:34:36.364401oai:www.lume.ufrgs.br:10183/211750Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-03T06:34:36Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
title |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
spellingShingle |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV Sirunyan, A. M. Aceleradores de partículas Colisões proton-proton |
title_short |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
title_full |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
title_fullStr |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
title_full_unstemmed |
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton–proton collisions at √s = 13 TeV |
title_sort |
Measurement of differential cross sections and charge ratios for t-channel single top quark 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 |
description |
A measurement is presented of differential cross sections for t-channel single top quark and antiquark production in proton–proton collisions at a centre-of-mass energy of 13TeV by the CMS experiment at the LHC. From a data set corresponding to an integrated luminosity of 35.9fb−1, events containing one muon or electron and two or three jets are analysed. The cross section is measured as a function of the top quark transverse momentum (pT), rapidity, and polarisation angle, the charged lepton pT and rapidity, and the pT of the W boson from the top quark decay. In addition, the charge ratio is measured differentially as a function of the top quark, charged lepton, and W boson kinematic observables. The results are found to be in agreement with standard model predictions using various next-to-leading-order event generators and sets of parton distribution functions. Additionally, the spin asymmetry, sensitive to the top quark polarisation, is determined from the differential distribution of the polarisation angle at parton level to be 0.440±0.070, in agreement with the standard model prediction. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-07-11T03:52:17Z |
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 |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/211750 |
dc.identifier.issn.pt_BR.fl_str_mv |
1434-6044 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001115711 |
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1434-6044 001115711 |
url |
http://hdl.handle.net/10183/211750 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The European physical journal. C, Particles and fields. Berlin. Vol. 80, no. 5 (May 2020), 370, 37 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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