Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV

We present the first direct experimental bound on the total decay width of the top quark, Gamma(t), using 955 pb(-1) of the Tevatron's p (p) over bar collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed to...

Descripción completa

Detalles Bibliográficos
Autores: CDF Collaboration, Cabrera, Susana, Cuenca Almenar, Cristóbal, Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, Gervasio, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar Cortabitarte, R., Aaltonen, T.
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/22113
Acceso en línea:http://hdl.handle.net/10261/22113
Access Level:acceso abierto
id ES_9b5cfe7dfb104f0854e76b4717f6033f
oai_identifier_str oai:digital.csic.es:10261/22113
network_acronym_str ES
network_name_str España
repository_id_str
spelling Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeVCDF CollaborationCabrera, SusanaCuenca Almenar, CristóbalÁlvarez González, B.Casal, BrunoCuevas, JavierGómez, GervasioRodrigo Anoro, TeresaRuiz Jimeno, AlbertoScodellaro, LucaVila, IvánVilar Cortabitarte, R.Aaltonen, T.We present the first direct experimental bound on the total decay width of the top quark, Gamma(t), using 955 pb(-1) of the Tevatron's p (p) over bar collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed top quark mass from these events is fitted to templates representing different values of the top quark width. Using a confidence interval based on likelihood-ratio ordering, we extract an upper limit at 95% C.L. of Gamma(t) < 13.1 GeV for an assumed top quark mass of 175 GeV/c(2).We thank Torbjörn Sjöstrand, Stephen Mrenna, Peter Skands, Alessandro Ballestrero, and Ezio Maina for discussions related to the Monte Carlo modeling of the top quark lineshape. We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. 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 Bundesministerium für Bildung und Forschung, Germany; the Korean Science and Engineering Foundation and the Korean Research Foundation; the Science and Technology Facilities 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; the Slovak R&D Agency; and the Academy of Finland.Peer reviewedAmerican Physical Society201020102009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501211359 bytesapplication/pdfhttp://hdl.handle.net/10261/22113reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/ 10.1103/PhysRevLett.102.042001info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/221132026-05-22T06:33:51Z
dc.title.none.fl_str_mv Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
title Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
spellingShingle Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
CDF Collaboration
title_short Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
title_full Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
title_fullStr Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
title_full_unstemmed Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
title_sort Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
dc.creator.none.fl_str_mv CDF Collaboration
Cabrera, Susana
Cuenca Almenar, Cristóbal
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Aaltonen, T.
author CDF Collaboration
author_facet CDF Collaboration
Cabrera, Susana
Cuenca Almenar, Cristóbal
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Aaltonen, T.
author_role author
author2 Cabrera, Susana
Cuenca Almenar, Cristóbal
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Aaltonen, T.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
description We present the first direct experimental bound on the total decay width of the top quark, Gamma(t), using 955 pb(-1) of the Tevatron's p (p) over bar collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed top quark mass from these events is fitted to templates representing different values of the top quark width. Using a confidence interval based on likelihood-ratio ordering, we extract an upper limit at 95% C.L. of Gamma(t) < 13.1 GeV for an assumed top quark mass of 175 GeV/c(2).
publishDate 2009
dc.date.none.fl_str_mv 2009
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/22113
url http://hdl.handle.net/10261/22113
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/ 10.1103/PhysRevLett.102.042001
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 211359 bytes
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
_version_ 1869414514972164096
score 15,812455

Similares en LA Referencia