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DC Field | Value | Language |
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dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Calvo Gomez, M. | - |
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 | Vazquez Gomez, R. | - |
dc.contributor.author | LHCb collaboration | - |
dc.date.accessioned | 2022-06-09T13:50:12Z | - |
dc.date.available | 2022-06-09T13:50:12Z | - |
dc.date.issued | 2018 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/2445/186516 | - |
dc.description.abstract | A Dalitz plot analysis of B0 → ηc(1S)K +π− decays is performed using data samples of pp collisions collected with the LHCb detector at centre-of-mass energies of √s = 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 4.7 fb−1. A satisfactory description of the data is obtained when including a contribution representing an exotic ηc(1S)π− resonant state. The significance of this exotic resonance is more than three standard deviations, while its mass and width are 4096 ± 20 +18 −22 MeV and 152±58 +60 −35 MeV, respectively. The spin-parity assignments J P = 0+ and J P = 1− are both consistent with the data. In addition, the first measurement of the B0 → ηc(1S)K +π− branching fraction is performed and gives B(B0→ ηc(1S)K +π−) = (5.73 ± 0.24 ± 0.13 ± 0.66) × 10−4, where the first uncertainty is statistical, the second systematic, and the third is due to limited knowledge of external branching fractions. | - |
dc.format.extent | 23 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Società Italiana di Fisica & Springer Verlag | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1140/epjc/s10052-018-6447-z | - |
dc.relation.ispartof | European Physical Journal C, 2018, vol. 78, num. 12, p. 1019 | - |
dc.relation.uri | https://doi.org/10.1140/epjc/s10052-018-6447-z | - |
dc.rights | cc-by (c) Alfonso Albero, Alejandro et al., 2018 | - |
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 | Evidence for an ηc(1 S) π- resonance in B0→ ηc(1 S) K+π- decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 684603 | - |
dc.date.updated | 2022-06-09T13:50:12Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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684603.pdf | 1.92 MB | Adobe PDF | View/Open |
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