Observation of the decay Λ b 0 → ψ(2S)pπ−
The Λ0 b baryon is the isospin-singlet ground state of a bound system of a beauty quark and two light quarks. The high production rate of b quarks at the Large Hadron Collider (LHC) [1-5], along with the excellent mass resolution and hadron-identification capabilities of the LHCb detector, give acce...
| Autores: | , , , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/185371 |
| Acesso em linha: | https://hdl.handle.net/2445/185371 |
| Access Level: | acceso abierto |
| Palavra-chave: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
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Observation of the decay Λ b 0 → ψ(2S)pπ−Alfonso Albero, AlejandroCalvo Gómez, MíriamCamboni, AlessandroCoquereau, SamuelGarrido Beltrán, LluísGascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaLHCb CollaborationHadronsGran Col·lisionador d'HadronsFísica de partículesExperimentsHadronsLarge Hadron Collider (France and Switzerland)Particle physicsExperimentsThe Λ0 b baryon is the isospin-singlet ground state of a bound system of a beauty quark and two light quarks. The high production rate of b quarks at the Large Hadron Collider (LHC) [1-5], along with the excellent mass resolution and hadron-identification capabilities of the LHCb detector, give access to a variety of decay channels of the Λ0 b baryon, including multibody, rare, charmless and semileptonic decays [6-25]. The high signal yield of the Λ0 b → J/ψpK− decay [15] facilitated a precise measurement of the Λ0 b lifetime [26], while the relatively low energy released in the Λ0 b→ ψ(2S)pK− and Λ0 b→ χcpK− decays allowed for precise measurements of the Λ0 b mass [16, 22]. A six-dimensional amplitude analysis of the Λ0 b → J/ψpK− decay resulted in the observation of the Pc(4380)+ and Pc(4450)+ pentaquark states decaying into the J/ψp final state [27]. Later, these states were confirmed using a model-independent technique [28]. Subsequently, an analysis of Cabibbo-suppressed Λ0 b → J/ψpπ − decays found evidence for contributions from the Pc(4380)+ and Pc(4450)+ pentaquarks and from the Zc(4200)− tetraquark [29].Springer Verlag2022202220182022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion18 p.application/pdfhttps://hdl.handle.net/2445/185371Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1007/JHEP08(2018)131Journal of High Energy Physics, 2018, vol. 2018, num. 8, p. 1-18https://doi.org/10.1007/JHEP08(2018)131cc-by (c) LHCb Collaboration (UB: Alfonso Albero, A. et al., 2018https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1853712026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| title |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| spellingShingle |
Observation of the decay Λ b 0 → ψ(2S)pπ− Alfonso Albero, Alejandro Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| title_short |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| title_full |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| title_fullStr |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| title_full_unstemmed |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| title_sort |
Observation of the decay Λ b 0 → ψ(2S)pπ− |
| dc.creator.none.fl_str_mv |
Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla LHCb Collaboration |
| author |
Alfonso Albero, Alejandro |
| author_facet |
Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla LHCb Collaboration |
| author_role |
author |
| author2 |
Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla LHCb Collaboration |
| author2_role |
author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| topic |
Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| description |
The Λ0 b baryon is the isospin-singlet ground state of a bound system of a beauty quark and two light quarks. The high production rate of b quarks at the Large Hadron Collider (LHC) [1-5], along with the excellent mass resolution and hadron-identification capabilities of the LHCb detector, give access to a variety of decay channels of the Λ0 b baryon, including multibody, rare, charmless and semileptonic decays [6-25]. The high signal yield of the Λ0 b → J/ψpK− decay [15] facilitated a precise measurement of the Λ0 b lifetime [26], while the relatively low energy released in the Λ0 b→ ψ(2S)pK− and Λ0 b→ χcpK− decays allowed for precise measurements of the Λ0 b mass [16, 22]. A six-dimensional amplitude analysis of the Λ0 b → J/ψpK− decay resulted in the observation of the Pc(4380)+ and Pc(4450)+ pentaquark states decaying into the J/ψp final state [27]. Later, these states were confirmed using a model-independent technique [28]. Subsequently, an analysis of Cabibbo-suppressed Λ0 b → J/ψpπ − decays found evidence for contributions from the Pc(4380)+ and Pc(4450)+ pentaquarks and from the Zc(4200)− tetraquark [29]. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2022 2022 2022 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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https://hdl.handle.net/2445/185371 |
| url |
https://hdl.handle.net/2445/185371 |
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Inglés |
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Inglés |
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Reproducció del document publicat a: https://doi.org/10.1007/JHEP08(2018)131 Journal of High Energy Physics, 2018, vol. 2018, num. 8, p. 1-18 https://doi.org/10.1007/JHEP08(2018)131 |
| dc.rights.none.fl_str_mv |
cc-by (c) LHCb Collaboration (UB: Alfonso Albero, A. et al., 2018 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
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cc-by (c) LHCb Collaboration (UB: Alfonso Albero, A. et al., 2018 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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18 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Springer Verlag |
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Springer Verlag |
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Articles publicats en revistes (Física Quàntica i Astrofísica) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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