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DC Field | Value | Language |
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dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Calvo Gómez, Míriam | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Coquereau, Samuel | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gascón Fora, David | - |
dc.contributor.author | Gironella Gironell, Pere | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.contributor.author | Marin Benito, Carla | - |
dc.date.accessioned | 2020-07-13T10:07:01Z | - |
dc.date.available | 2020-07-13T10:07:01Z | - |
dc.date.issued | 2019-09-03 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | http://hdl.handle.net/2445/168477 | - |
dc.description.abstract | Using proton-proton collision data, collected with the LHCb detector and corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at the centre-of-mass energies of 7, 8, and 13 TeV, respectively, the decay Λ0 b → χc1(3872)pK− with χc1(3872) → J/ψ π+π − is observed for the first time. The significance of the observed signal is in excess of seven standard deviations. It is found that (58 ± 15)% of the decays proceed via the two-body intermediate state χc1(3872)Λ(1520). The branching fraction with respect to that of the Λ0 b → ψ(2S)pK− decay mode, where the ψ(2S) meson is reconstructed in the J/ψ π+π − final state, is measured to be: B(Λ0b → χc1(3872)pK−)B(Λ0b → ψ(2S)pK−)×B(χc1(3872) → J/ψ π+π−)B(ψ(2S) → J/ψ π+π−)= (5.4 ± 1.1 ± 0.2) × 10−2, where the first uncertainty is statistical and the second is systematic. | - |
dc.format.extent | 19 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Verlag | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1007/JHEP09(2019)028 | - |
dc.relation.ispartof | Journal of High Energy Physics, 2019, p. 28 | - |
dc.relation.uri | https://doi.org/10.1007/JHEP09(2019)028 | - |
dc.rights | cc-by (c) Alfonso Albero, Alejandro et al., 2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Hadrons | - |
dc.subject.classification | Col·lisions (Física) | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Hadrons | - |
dc.subject.other | Collisions (Physics) | - |
dc.subject.other | Experiments | - |
dc.title | Observation of the Λb0→χc1 (3872) pK− decay | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 696336 | - |
dc.date.updated | 2020-07-13T10:07:02Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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696336.pdf | 510.44 kB | Adobe PDF | View/Open |
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