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http://hdl.handle.net/2445/132562
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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 | 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 | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2019-05-02T13:25:45Z | - |
dc.date.available | 2019-05-02T13:25:45Z | - |
dc.date.issued | 2018-08-15 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/132562 | - |
dc.description.abstract | From samples of p p collision data collected by the LHCb experiment at √ s = 7 , 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb − 1 , respectively, a peak in both the Λ 0 b K − and Ξ 0 b π − invariant mass spectra is observed. In the quark model, radially and orbitally excited Ξ − b resonances with quark content b d s are expected. Referring to this peak as Ξ b ( 6227 ) − , the mass and natural width are measured to be m Ξ b ( 6227 ) − = 6226.9 ± 2.0 ± 0.3 ± 0.2 MeV / c 2 and Γ Ξ b ( 6227 ) − = 18.1 ± 5.4 ± 1.8 MeV / c 2 , where the first uncertainty is statistical, the second is systematic, and the third, on m Ξ b ( 6227 ) − , is due to the knowledge of the Λ 0 b baryon mass. Relative production rates of the Ξ b ( 6227 ) − → Λ 0 b K − and Ξ b ( 6227 ) − → Ξ 0 b π − decays are also reported. | - |
dc.format.extent | 12 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.121.072002 | - |
dc.relation.ispartof | Physical Review Letters, 2018, vol. 121, num. 7, p. 072002 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.121.072002 | - |
dc.rights | cc by (c) CERN; LHCb Collaboration, 2018 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Observation of a New Ξb- Resonance | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 684589 | - |
dc.date.updated | 2019-05-02T13:25:45Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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