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http://hdl.handle.net/2445/196766
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DC Field | Value | Language |
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dc.contributor.author | LHCb Collaboration | - |
dc.contributor.author | Calvo Gomez, Miriam | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Comerma Montells, Albert | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Oyanguren Campos, Arantza de | - |
dc.contributor.author | Pérez-Calero Yzquierdo, Antonio | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Potterat, Cédric | - |
dc.contributor.author | Rives Molina, Vicente | - |
dc.contributor.author | Ruiz, Hugo (Ruiz Pérez) | - |
dc.contributor.author | Ruiz Valls, Pablo | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.date.accessioned | 2023-04-13T11:17:50Z | - |
dc.date.available | 2023-04-13T11:17:50Z | - |
dc.date.issued | 2013-08 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/2445/196766 | - |
dc.description.abstract | The differential branching fraction of the decay Λ0 b → Λμ+μ− is measured as a function of the square of the dimuon invariant mass, q2. A yield of 78 ± 12 Λ0 b → Λμ+μ− decays is observed using data, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. A significant signal is found in the q2 region above the square of the J /ψ mass, while at lower-q2 values upper limits are set on the differential branching fraction. Integrating the differential branching fraction over q2, while excluding the J /ψ and ψ(2S) regions, gives a branching fraction of B(Λ0 b → Λμ+μ−) = (0.96 ± 0.16(stat) ± 0.13(syst) ± 0.21(norm)) × 10−6, where the uncertainties are statistical, systematic and due to the normalisation mode, Λ0 b → J /ψΛ, respectively. | - |
dc.format.extent | 11 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2013.06.060 | - |
dc.relation.ispartof | Physics Letters B, 2013, vol. 725, p. 25-35 | - |
dc.relation.uri | https://doi.org/10.1016/j.physletb.2013.06.060 | - |
dc.rights | cc by-nc-nd (c) CERN, 2013 | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.classification | Hadrons | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.subject.other | Hadrons | - |
dc.title | Measurement of the differential branching fraction of the decay Λb0→Λμ+μ- | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 629011 | - |
dc.date.updated | 2023-04-13T11:17:50Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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629011.pdf | 516.93 kB | Adobe PDF | View/Open |
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