Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-

8 páginas, 2 figuras, 4 tablas.-- PACS numbers: 13.30.Ce, 12.15.Mm, 14.20.Mr.-- CDF Collaboration: et al.

Detalles Bibliográficos
Autores: Aaltonen, T., Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, Gervasio, Palencia, Enrique, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar Cortabitarte, R., Cabrera, Susana, Cuenca Almenar, Cristóbal
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/46368
Acceso en línea:http://hdl.handle.net/10261/46368
Access Level:acceso abierto
Palabra clave:ddc:500.2
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spelling Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-Aaltonen, T.Álvarez González, B.Casal, BrunoCuevas, JavierGómez, GervasioPalencia, EnriqueRodrigo Anoro, TeresaRuiz Jimeno, AlbertoScodellaro, LucaVila, IvánVilar Cortabitarte, R.Cabrera, SusanaCuenca Almenar, Cristóbalddc:500.28 páginas, 2 figuras, 4 tablas.-- PACS numbers: 13.30.Ce, 12.15.Mm, 14.20.Mr.-- CDF Collaboration: et al.We report the first observation of the baryonic flavor-changing neutral current decay Λb0→Λμ+μ- with 24 signal events and a statistical significance of 5.8 Gaussian standard deviations. This measurement uses a pp̅ collisions data sample corresponding to 6.8  fb-1 at √s=1.96  TeV collected by the CDF II detector at the Tevatron collider. The total and differential branching ratios for Λb0→Λμ+μ- are measured. We find B(Λb0→Λμ+μ-)=[1.73±0.42(stat)±(syst)]×10-6. We also report the first measurement of the differential branching ratio of Bs0→ϕμ+μ-, using 49 signal events. In addition, we report branching ratios for B+→K+μ+μ-, B0→K0μ+μ-, and B→K*(892)μ+μ- decays.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, UK; 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.Peer reviewedAmerican Physical Society201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/46368reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevLett.107.201802info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/463682026-05-22T06:33:51Z
dc.title.none.fl_str_mv Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
title Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
spellingShingle Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
Aaltonen, T.
ddc:500.2
title_short Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
title_full Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
title_fullStr Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
title_full_unstemmed Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
title_sort Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ-
dc.creator.none.fl_str_mv Aaltonen, T.
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
Cuenca Almenar, Cristóbal
author Aaltonen, T.
author_facet Aaltonen, T.
Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
Cuenca Almenar, Cristóbal
author_role author
author2 Álvarez González, B.
Casal, Bruno
Cuevas, Javier
Gómez, Gervasio
Palencia, Enrique
Rodrigo Anoro, Teresa
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar Cortabitarte, R.
Cabrera, Susana
Cuenca Almenar, Cristóbal
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ddc:500.2
topic ddc:500.2
description 8 páginas, 2 figuras, 4 tablas.-- PACS numbers: 13.30.Ce, 12.15.Mm, 14.20.Mr.-- CDF Collaboration: et al.
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
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/10261/46368
url http://hdl.handle.net/10261/46368
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.107.201802
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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 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 15.81155

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