Studying the Wtb vertex structure using recent LHC results

Detalhes bibliográficos
Autor(a) principal: Bernardo, César
Data de Publicação: 2014
Outros Autores: Castro, Nuno F., Fiolhais, Miguel C. N., Gonçalves, Hugo Manuel Castro, Guerra, André G. C., Oliveira, Miguel, Onofre, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/32549
Resumo: The Wtb vertex structure and the search for new anomalous couplings is studied using top quark measurements obtained at the LHC, for a center-of-mass energy of 8 TeV. By combining the latest and most precise results on the single top quark production cross section and the measurements of the W-boson helicity fractions (F0 and FL), it is possible to set new limits, at a 95% C.L., on the real and imaginary components of the new couplings. The combination of the LHC observables clearly improves the limits obtained when using the individual results alone. The updated measurements of the W-boson helicity fractions and the s+t channels’ electroweak single top quark production, at the Tevatron, improve the LHC limits when a world combination of all observables (LHC+Tevatron) is performed.
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spelling Studying the Wtb vertex structure using recent LHC resultsCiências Naturais::Ciências FísicasScience & TechnologyThe Wtb vertex structure and the search for new anomalous couplings is studied using top quark measurements obtained at the LHC, for a center-of-mass energy of 8 TeV. By combining the latest and most precise results on the single top quark production cross section and the measurements of the W-boson helicity fractions (F0 and FL), it is possible to set new limits, at a 95% C.L., on the real and imaginary components of the new couplings. The combination of the LHC observables clearly improves the limits obtained when using the individual results alone. The updated measurements of the W-boson helicity fractions and the s+t channels’ electroweak single top quark production, at the Tevatron, improve the LHC limits when a world combination of all observables (LHC+Tevatron) is performed.This work was partially supported by Fundacao para a Ciencia e Tecnologia, FCT (Project No. CERN/FP/123619/2011, Grant No. SFRH/BI/52524/2014 and Contract No. IF/00050/2013). The work of M. C. N. Fiolhais was supported by LIP-Laboratorio de Instrumentacao e Fisica Experimental de Particulas, Portugal (Grant No. PestIC/FIS/LA007/2013). The authors would like to thank the support of CRUP (Conselho de Reitores das Universidades Portuguesas) through Accao integrada Ref. E 2/09 and the MAP-Fis Program (the Joint Doctoral Programs of the Universities of Minho, Aveiro and Porto, http://www.map.edu.pt/fis/home). Special thanks go to Juan Antonio Aguilar-Saavedra for all the fruitful discussions and a long-term collaboration.American Physical SocietyUniversidade do MinhoBernardo, CésarCastro, Nuno F.Fiolhais, Miguel C. N.Gonçalves, Hugo Manuel CastroGuerra, André G. C.Oliveira, MiguelOnofre, A.20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/32549engBernardo, C., Castro, N. F., Fiolhais, M. C. N., Goncalves, H., Guerra, A. G. C., Oliveira, M., & Onofre, A. (2014). Studying the Wtb vertex structure using recent LHC results. Physical Review D, 90(11), 3007-3007. doi: 10.1103/PhysRevD.90.1130071550-79981550-236810.1103/PhysRevD.90.113007info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:41:07Zoai:repositorium.sdum.uminho.pt:1822/32549Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:38:01.747195Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Studying the Wtb vertex structure using recent LHC results
title Studying the Wtb vertex structure using recent LHC results
spellingShingle Studying the Wtb vertex structure using recent LHC results
Bernardo, César
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Studying the Wtb vertex structure using recent LHC results
title_full Studying the Wtb vertex structure using recent LHC results
title_fullStr Studying the Wtb vertex structure using recent LHC results
title_full_unstemmed Studying the Wtb vertex structure using recent LHC results
title_sort Studying the Wtb vertex structure using recent LHC results
author Bernardo, César
author_facet Bernardo, César
Castro, Nuno F.
Fiolhais, Miguel C. N.
Gonçalves, Hugo Manuel Castro
Guerra, André G. C.
Oliveira, Miguel
Onofre, A.
author_role author
author2 Castro, Nuno F.
Fiolhais, Miguel C. N.
Gonçalves, Hugo Manuel Castro
Guerra, André G. C.
Oliveira, Miguel
Onofre, A.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Bernardo, César
Castro, Nuno F.
Fiolhais, Miguel C. N.
Gonçalves, Hugo Manuel Castro
Guerra, André G. C.
Oliveira, Miguel
Onofre, A.
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
Science & Technology
topic Ciências Naturais::Ciências Físicas
Science & Technology
description The Wtb vertex structure and the search for new anomalous couplings is studied using top quark measurements obtained at the LHC, for a center-of-mass energy of 8 TeV. By combining the latest and most precise results on the single top quark production cross section and the measurements of the W-boson helicity fractions (F0 and FL), it is possible to set new limits, at a 95% C.L., on the real and imaginary components of the new couplings. The combination of the LHC observables clearly improves the limits obtained when using the individual results alone. The updated measurements of the W-boson helicity fractions and the s+t channels’ electroweak single top quark production, at the Tevatron, improve the LHC limits when a world combination of all observables (LHC+Tevatron) is performed.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/32549
url http://hdl.handle.net/1822/32549
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Bernardo, C., Castro, N. F., Fiolhais, M. C. N., Goncalves, H., Guerra, A. G. C., Oliveira, M., & Onofre, A. (2014). Studying the Wtb vertex structure using recent LHC results. Physical Review D, 90(11), 3007-3007. doi: 10.1103/PhysRevD.90.113007
1550-7998
1550-2368
10.1103/PhysRevD.90.113007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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