Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II

CDF Collaboration: et al.

Detalhes bibliográficos
Autores: CDF Collaboration, Cuevas, Javier, Gómez, Gervasio, Gómez-Ceballos, Guillelmo, Menzemer, Stephanie, Palencia, Enrique, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar Cortabitarte, R., Cabrera, Susana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/419854
Acesso em linha:http://hdl.handle.net/10261/419854
Access Level:acceso abierto
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spelling Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF IICDF CollaborationCuevas, JavierGómez, GervasioGómez-Ceballos, GuillelmoMenzemer, StephaniePalencia, EnriqueRodrigo Anoro, TeresaRuiz Jimeno, AlbertoScodellaro, LucaVila, IvánVilar Cortabitarte, R.Cabrera, SusanaCDF Collaboration: et al.We present a measurement of the fractions 0 and + of longitudinally polarized and right-handed bosons in top-quark decays using data collected with the CDF II detector. The data set used in the analysis corresponds to an integrated luminosity of approximately 318  pb−1. We select ⁢‾ candidate events with one lepton, at least four jets, and missing transverse energy. Our helicity measurement uses the decay angle *, which is defined as the angle between the momentum of the charged lepton in the boson rest frame and the momentum in the top-quark rest frame. The cos* distribution in the data is determined by full kinematic reconstruction of the ⁢‾ candidates. We find 0 =0.85+0.15−0.22⁢(stat) ±0.06⁢(syst) and + =0.05+0.11−0.05⁢(stat) ±0.03⁢(syst), which is consistent with the standard model prediction. We set an upper limit on the fraction of right-handed bosons of + <0.26 at the 95% confidence level.This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Research Corporation; the Bundesministerium für Bildung und Forschung, Germany; the Korean Science and Engineering Foundation and the Korean Research Foundation; the Particle Physics and Astronomy Research Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Comisión Interministerial de Ciencia y Tecnología, Spain; the European Community’s Human Potential Programme under contract No. HPRN-CT-2002-00292; and the Academy of Finland.Peer reviewedAmerican Physical SocietyEuropean CommissionComisión Interministerial de Ciencia y Tecnología, CICYT (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/419854reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1103/PhysRevD.75.052001Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4198542026-05-22T06:33:51Z
dc.title.none.fl_str_mv Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
title Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
spellingShingle Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
CDF Collaboration
title_short Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
title_full Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
title_fullStr Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
title_full_unstemmed Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
title_sort Measurement of the helicity fractions of W bosons from top quark decays using fully reconstructed ⁢ ‾ events with CDF II
dc.creator.none.fl_str_mv CDF Collaboration
Cuevas, Javier
Gómez, Gervasio
Gómez-Ceballos, Guillelmo
Menzemer, Stephanie
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
author CDF Collaboration
author_facet CDF Collaboration
Cuevas, Javier
Gómez, Gervasio
Gómez-Ceballos, Guillelmo
Menzemer, Stephanie
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
author_role author
author2 Cuevas, Javier
Gómez, Gervasio
Gómez-Ceballos, Guillelmo
Menzemer, Stephanie
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description CDF Collaboration: et al.
publishDate 2007
dc.date.none.fl_str_mv 2007
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/419854
url http://hdl.handle.net/10261/419854
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1103/PhysRevD.75.052001
Sí
dc.rights.none.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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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