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DC Field | Value | Language |
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dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Amato, S. | - |
dc.contributor.author | Coquereau, Samuel | - |
dc.contributor.author | Fernandez, G. | - |
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 | LHCb Collaboration | - |
dc.date.accessioned | 2022-06-09T12:58:30Z | - |
dc.date.available | 2022-06-09T12:58:30Z | - |
dc.date.issued | 2017-11 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | http://hdl.handle.net/2445/186504 | - |
dc.description.abstract | A measurement is presented of decay-time-dependent CP violation in the decays B 0 → J/ ψ K S 0 and B 0 → ψ(2 S) K S 0 , where the J/ ψ is reconstructed from two electrons and the ψ(2 S) from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. The CP -violation observables are measured to be C({B}^0\to J/ψ {K}S^0)=0.12± 0.07± 0.02, {}S({B}^0\to J/ψ {K}S^0)=0.83± 0.08± 0.01, {}C({B}^0\to ψ (2S){K}S^0)=-0.05± 0.10± 0.01, {}S({B}^0\to ψ (2S){K}S^0)=0.84± 0.10± 0.01, where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after {B}^0-{\overline{B}}^0 oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using B 0 → J/ ψ K S 0 decays, where the J/ ψ meson was reconstructed from two muons. The averages of all three sets of LHCb results are C({B}^0\to [c\overline{c}]{K}S^0)=-0.017± 0.029, {}S({B}^0\to [c\overline{c}]{K}S^0)=0.760± 0.034, under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions. | - |
dc.format.extent | 18 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/JHEP11(2017)170 | - |
dc.relation.ispartof | Journal of High Energy Physics, 2017, vol. 2017, num. 170, p. 1-18 | - |
dc.relation.uri | https://doi.org/10.1007/JHEP11(2017)170 | - |
dc.rights | cc-by (c) Alfonso Albero, Alejandro et al., 2017 | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Hadrons | - |
dc.subject.classification | Gran Col·lisionador d'Hadrons | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Hadrons | - |
dc.subject.other | Large Hadron Collider (France and Switzerland) | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Measurement of CP violation in B 0 → J/ ψK S 0 and B 0 → ψ(2 S) K S 0 decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 678023 | - |
dc.date.updated | 2022-06-09T12:58:31Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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