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http://hdl.handle.net/2445/133580
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DC Field | Value | Language |
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dc.contributor.author | Abellan Beteta, Carlos | - |
dc.contributor.author | Calvo Gómez, Míriam | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Comerma Montells, Albert | - |
dc.contributor.author | Domingo Bonal, Francesc | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Grabalosa Gándara, Marc | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | López Asamar, Elias | - |
dc.contributor.author | Pérez-Calero Yzquierdo, Antonio | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Pie Valls, B. (Blai) | - |
dc.contributor.author | Potterat, Cédric | - |
dc.contributor.author | Puig Navarro, Albert | - |
dc.contributor.author | Roselló, M. | - |
dc.contributor.author | Ruiz, Hugo (Ruiz Pérez) | - |
dc.contributor.author | Vázquez Gómez, Ricard | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.contributor.author | Gascón Fora, David | - |
dc.date.accessioned | 2019-05-21T10:12:50Z | - |
dc.date.available | 2019-05-21T10:12:50Z | - |
dc.date.issued | 2012-09-26 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/133580 | - |
dc.description.abstract | The first observation of the decay B 0 → ¯¯¯ D 0 K + K − is reported from an analysis of 0.62 fb − 1 of p p collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B 0 → ¯¯¯ D 0 π + π − to be B ( B 0 → ¯¯¯ D 0 K + K − ) B ( B 0 → ¯¯¯ D 0 π + π − ) = 0.056 ± 0.011 ± 0.007 , where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8 σ . Evidence, with 3.8 σ significance, for B 0 s → ¯¯¯ D 0 K + K − decays is also presented. The relative branching fraction is measured to be B ( B 0 s → ¯¯¯ D 0 K + K − ) B ( B 0 → ¯¯¯ D 0 K + K − ) = 0.90 ± 0.27 ± 0.20 . These channels are of interest to study the mechanisms behind hadronic B decays, and open new possibilities for C P violation analyses with larger data sets. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.109.131801 | - |
dc.relation.ispartof | Physical Review Letters, 2012, vol. 109, num. 13, p. 131801 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.109.131801 | - |
dc.rights | cc by (c) CERN; LHCb Collaboration, 2012 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Observation of B0→¯¯¯D0K+K− and Evidence for B0s→¯¯¯D0K+K− | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 619627 | - |
dc.date.updated | 2019-05-21T10:12:50Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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619627.pdf | 324.73 kB | Adobe PDF | View/Open |
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