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dc.contributor.author | Aaltonen, T. | - |
dc.contributor.author | Álvarez González, B. | - |
dc.contributor.author | Casal, Bruno | - |
dc.contributor.author | Cuevas, Javier | - |
dc.contributor.author | Gómez, Gervasio | - |
dc.contributor.author | Palencia, Enrique | - |
dc.contributor.author | Rodrigo, Teresa | - |
dc.contributor.author | Ruiz Jimeno, Alberto | - |
dc.contributor.author | Scodellaro, Luca | - |
dc.contributor.author | Vila, Iván | - |
dc.contributor.author | Vilar Cortabitarte, R. | - |
dc.contributor.author | Cabrera, Susana | - |
dc.contributor.author | Cuenca Almenar, Cristóbal | - |
dc.date.accessioned | 2012-02-29T10:14:07Z | - |
dc.date.available | 2012-02-29T10:14:07Z | - |
dc.date.issued | 2011-11 | - |
dc.identifier.citation | Physical Review Letters 107(20): 201802 (2011) | es_ES |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10261/46368 | - |
dc.description | 8 páginas, 2 figuras, 4 tablas.-- PACS numbers: 13.30.Ce, 12.15.Mm, 14.20.Mr.-- CDF Collaboration: et al. | es_ES |
dc.description.abstract | 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. | es_ES |
dc.description.sponsorship | 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. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Physical Society | es_ES |
dc.rights | openAccess | es_ES |
dc.title | Observation of the Baryonic Flavor-Changing Neutral Current Decay Λb0→Λμ+μ- | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1103/PhysRevLett.107.201802 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevLett.107.201802 | es_ES |
dc.identifier.e-issn | 1079-7114 | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.openairetype | artículo | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
Aparece en las colecciones: | (IFCA) Artículos (IFIC) Artículos |
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e201802.pdf | 312,56 kB | Adobe PDF | Visualizar/Abrir |
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