Search for CP violating top quark couplings 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/10183/270808 |
Resumo: | Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb−1 . The search uses two observables, O1 and O3 , which are Lorentz scalars. The observable O1 is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while O3 consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the top quark. The results are consistent with the expectation from the standard model. |
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Tumasyan, ArmenSilveira, Gustavo Gil daCMS Collaboration2024-01-10T03:37:12Z20231029-8479http://hdl.handle.net/10183/270808001188363Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb−1 . The search uses two observables, O1 and O3 , which are Lorentz scalars. The observable O1 is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while O3 consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the top quark. The results are consistent with the expectation from the standard model.application/pdfengThe journal of high energy physics. Trieste. No. 7 (July 2023), 023, 44 p.Aceleradores de partículasHadronsColisões proton-protonCP ViolationHadron-Hadron scatteringTop PhysicsSearch for CP violating top quark couplings 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:UFRGSTEXT001188363.pdf.txt001188363.pdf.txtExtracted Texttext/plain112206http://www.lume.ufrgs.br/bitstream/10183/270808/2/001188363.pdf.txt6c9e5d34e978b05afc6852e5a8bbf94bMD52ORIGINAL001188363.pdfTexto completo (inglês)application/pdf1248963http://www.lume.ufrgs.br/bitstream/10183/270808/1/001188363.pdf0a545cac72c3ed9acf0a402a4916addfMD5110183/2708082024-01-11 04:26:12.282365oai:www.lume.ufrgs.br:10183/270808Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-01-11T06:26:12Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
title |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
spellingShingle |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV Tumasyan, Armen Aceleradores de partículas Hadrons Colisões proton-proton CP Violation Hadron-Hadron scattering Top Physics |
title_short |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
title_full |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
title_fullStr |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
title_full_unstemmed |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
title_sort |
Search for CP violating top quark couplings in pp collisions at √s = 13 TeV |
author |
Tumasyan, Armen |
author_facet |
Tumasyan, Armen 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 |
Tumasyan, Armen Silveira, Gustavo Gil da CMS Collaboration |
dc.subject.por.fl_str_mv |
Aceleradores de partículas Hadrons Colisões proton-proton |
topic |
Aceleradores de partículas Hadrons Colisões proton-proton CP Violation Hadron-Hadron scattering Top Physics |
dc.subject.eng.fl_str_mv |
CP Violation Hadron-Hadron scattering Top Physics |
description |
Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb−1 . The search uses two observables, O1 and O3 , which are Lorentz scalars. The observable O1 is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while O3 consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the top quark. The results are consistent with the expectation from the standard model. |
publishDate |
2023 |
dc.date.issued.fl_str_mv |
2023 |
dc.date.accessioned.fl_str_mv |
2024-01-10T03:37:12Z |
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/10183/270808 |
dc.identifier.issn.pt_BR.fl_str_mv |
1029-8479 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001188363 |
identifier_str_mv |
1029-8479 001188363 |
url |
http://hdl.handle.net/10183/270808 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The journal of high energy physics. Trieste. No. 7 (July 2023), 023, 44 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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reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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UFRGS |
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Repositório Institucional da UFRGS |
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