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http://hdl.handle.net/2445/185481
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DC Field | Value | Language |
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dc.contributor.author | LHCb Collaboration | - |
dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Garcia Moreno, P. | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gironella Gironell, P. | - |
dc.contributor.author | Gomez Fernandez, S. | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Lobo Salvia, A. | - |
dc.contributor.author | Mauricio, J. | - |
dc.contributor.author | Vazquez Gomez, R. | - |
dc.contributor.author | Marin Benito, Carla | - |
dc.date.accessioned | 2022-05-10T14:42:03Z | - |
dc.date.available | 2022-05-10T14:42:03Z | - |
dc.date.issued | 2021 | - |
dc.identifier.issn | 1126-6708 | - |
dc.identifier.uri | http://hdl.handle.net/2445/185481 | - |
dc.description.abstract | A flavour-tagged time-dependent angular analysis of B0 s → J/ψφ decays is presented where the J/ψ meson is reconstructed through its decay to an e +e − pair. 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-violating phase and lifetime parameters of the B0 s system are measured to be φs = 0.00 ± 0.28 ± 0.05 rad, ∆Γs = 0.115 ± 0.045 ± 0.011 ps−1 and Γs = 0.608 ± 0.018 ± 0.011 ps−1 where the first uncertainty is statistical and the second systematic. This is the first time that CP-violating parameters are measured in the B0 s → J/ψφ decay with an e +e − pair in the final state. The results are consistent with previous measurements in other channels and with the Standard Model predictions. | - |
dc.format.extent | 28 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/JHEP10(2021)060 | - |
dc.relation.ispartof | Journal of High Energy Physics, 2021, vol. 2021, p. 1-28 | - |
dc.relation.uri | https://doi.org/10.1007/JHEP10(2021)060 | - |
dc.rights | cc-by (c) LHCb Collaboration et al., 2021 | - |
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 | First measurement of the CP-violating phase in B0s→J/ψ( → e+e−)ϕ decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 721069 | - |
dc.date.updated | 2022-05-10T14:42:04Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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721069.pdf | 991.41 kB | Adobe PDF | View/Open |
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