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http://hdl.handle.net/2445/132910
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DC Field | Value | Language |
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dc.contributor.author | Badalov, Alexey | - |
dc.contributor.author | Calvo Gómez, Míriam | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gascón Fora, David | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Marin Benito, Carla | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Rives Molina, Vicente José | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2019-05-09T09:33:33Z | - |
dc.date.available | 2019-05-09T09:33:33Z | - |
dc.date.issued | 2015-12-11 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/132910 | - |
dc.description.abstract | Using a p p collision data sample corresponding to an integrated luminosity of 3.0 fb − 1 , collected by the LHCb detector, we present the first search for the strangeness-changing weak decay Ξ − b → Λ 0 b π − . No b hadron decay of this type has been seen before. A signal for this decay, corresponding to a significance of 3.2 standard deviations, is reported. The relative rate is measured to be f Ξ − b f Λ 0 b B ( Ξ − b → Λ 0 b π − ) = ( 5.7 ± 1. 8 + 0.8 − 0.9 ) × 10 − 4 , where f Ξ − b and f Λ 0 b are the b → Ξ − b and b → Λ 0 b fragmentation fractions, and B ( Ξ − b → Λ 0 b π − ) is the branching fraction. Assuming f Ξ − b / f Λ 0 b is bounded between 0.1 and 0.3, the branching fraction B ( Ξ − b → Λ 0 b π − ) would lie in the range from ( 0.57 ± 0.21 ) % to ( 0.19 ± 0.07 ) % . | - |
dc.format.extent | 10 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.115.241801 | - |
dc.relation.ispartof | Physical Review Letters, 2015, vol. 115, num. 24, p. 241801 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.115.241801 | - |
dc.rights | cc by (c) CERN; LHCb Collaboration, 2015 | - |
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 | Evidence for the Strangeness-Changing Weak Decay Ξ−b→Λ0bπ− | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 656767 | - |
dc.date.updated | 2019-05-09T09:33:33Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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