Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96  TeV

Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio|||0000-0002-1077-6553; Rodrigo Anoro, Teresa; Ruiz Jimeno, Alberto|||0000-0002-3639-0368; Scodellaro, Luca|||0000-0002-4974-8330; Vila Álvarez, Iván |||0000-0002-6797-7209; Vilar Cortabitarte, Rocío|||0000-0003-2045-8054

Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV

We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark t˜1) decaying to a b quark and a chargino χ˜1± with a subsequent χ˜1± decay into a neutralino χ˜10, lepton ℓ, and neutrino ν. Using a data sample corresponding to 2.7 fb-1 of integr...

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Detalles Bibliográficos
Autores:	Aaltonen, Timo Antero, Álvarez González, Bárbara, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio\|\|\|0000-0002-1077-6553, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto\|\|\|0000-0002-3639-0368, Scodellaro, Luca\|\|\|0000-0002-4974-8330, Vila Álvarez, Iván \|\|\|0000-0002-6797-7209, Vilar Cortabitarte, Rocío\|\|\|0000-0003-2045-8054
Tipo de recurso:	artículo
Fecha de publicación:	2010
País:	España
Institución:	Universidad de Cantabria (UC)
Repositorio:	UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:	inglés
OAI Identifier:	oai:repositorio.unican.es:10902/1946
Acceso en línea:	http://hdl.handle.net/10902/1946
Access Level:	acceso abierto

id	ES_a4a59e3fbb2bf455c4e220c41a3aa74c
oai_identifier_str	oai:repositorio.unican.es:10902/1946
network_acronym_str	ES
network_name_str	España
repository_id_str
spelling	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeVAaltonen, Timo AnteroÁlvarez González, BárbaraCasal Laraña, BrunoCuevas Maestro, Francisco JavierGómez Gramuglio, Gervasio\|\|\|0000-0002-1077-6553Rodrigo Anoro, TeresaRuiz Jimeno, Alberto\|\|\|0000-0002-3639-0368Scodellaro, Luca\|\|\|0000-0002-4974-8330Vila Álvarez, Iván \|\|\|0000-0002-6797-7209Vilar Cortabitarte, Rocío\|\|\|0000-0003-2045-8054We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark t˜1) decaying to a b quark and a chargino χ˜1± with a subsequent χ˜1± decay into a neutralino χ˜10, lepton ℓ, and neutrino ν. Using a data sample corresponding to 2.7 fb-1 of integrated luminosity of pp̅ collisions at √s=1.96 TeV collected by the CDF II detector, we reconstruct the mass of top squark candidate events and fit the observed mass spectrum to a combination of standard model processes and t˜1t˜̅ 1 signal. We find no evidence for t˜1t˜̅ 1 production and set 95% C.L. limits on the masses of the top squark and the neutralino for several values of the chargino mass and the branching ratio B(χ˜1±→χ˜10ℓ±ν).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 World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland.American Physical SocietyUniversidad de Cantabria20102010-06-23journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/1946Physical Review Letters, 2010, 104, 251801reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/19462026-06-02T12:39:31Z
dc.title.none.fl_str_mv	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
title	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
spellingShingle	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV Aaltonen, Timo Antero
title_short	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
title_full	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
title_fullStr	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
title_full_unstemmed	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
title_sort	Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV
dc.creator.none.fl_str_mv	Aaltonen, Timo Antero Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio\|\|\|0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto\|\|\|0000-0002-3639-0368 Scodellaro, Luca\|\|\|0000-0002-4974-8330 Vila Álvarez, Iván \|\|\|0000-0002-6797-7209 Vilar Cortabitarte, Rocío\|\|\|0000-0003-2045-8054
author	Aaltonen, Timo Antero
author_facet	Aaltonen, Timo Antero Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio\|\|\|0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto\|\|\|0000-0002-3639-0368 Scodellaro, Luca\|\|\|0000-0002-4974-8330 Vila Álvarez, Iván \|\|\|0000-0002-6797-7209 Vilar Cortabitarte, Rocío\|\|\|0000-0003-2045-8054
author_role	author
author2	Álvarez González, Bárbara Casal Laraña, Bruno Cuevas Maestro, Francisco Javier Gómez Gramuglio, Gervasio\|\|\|0000-0002-1077-6553 Rodrigo Anoro, Teresa Ruiz Jimeno, Alberto\|\|\|0000-0002-3639-0368 Scodellaro, Luca\|\|\|0000-0002-4974-8330 Vila Álvarez, Iván \|\|\|0000-0002-6797-7209 Vilar Cortabitarte, Rocío\|\|\|0000-0003-2045-8054
author2_role	author author author author author author author author author
dc.contributor.none.fl_str_mv	Universidad de Cantabria
description	We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark t˜1) decaying to a b quark and a chargino χ˜1± with a subsequent χ˜1± decay into a neutralino χ˜10, lepton ℓ, and neutrino ν. Using a data sample corresponding to 2.7 fb-1 of integrated luminosity of pp̅ collisions at √s=1.96 TeV collected by the CDF II detector, we reconstruct the mass of top squark candidate events and fit the observed mass spectrum to a combination of standard model processes and t˜1t˜̅ 1 signal. We find no evidence for t˜1t˜̅ 1 production and set 95% C.L. limits on the masses of the top squark and the neutralino for several values of the chargino mass and the branching ratio B(χ˜1±→χ˜10ℓ±ν).
publishDate	2010
dc.date.none.fl_str_mv	2010 2010-06-23
dc.type.none.fl_str_mv	journal article http://purl.org/coar/resource_type/c_6501 NA http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	http://hdl.handle.net/10902/1946
url	http://hdl.handle.net/10902/1946
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv	openAccess
dc.publisher.none.fl_str_mv	American Physical Society
publisher.none.fl_str_mv	American Physical Society
dc.source.none.fl_str_mv	Physical Review Letters, 2010, 104, 251801 reponame:UCrea Repositorio Abierto de la Universidad de Cantabria instname:Universidad de Cantabria (UC)
instname_str	Universidad de Cantabria (UC)
reponame_str	UCrea Repositorio Abierto de la Universidad de Cantabria
collection	UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score	15.300719

Search for pair production of supersymmetric top quarks in dilepton events from pp̅ collisions at √s=1.96 TeV

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