Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation
A search for CP violation in the decay Λ b 0 → pK - μ + μ - is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded...
| Autores: | , , , , , , , , , , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2017 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositório: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/186410 |
| Acesso em linha: | https://hdl.handle.net/2445/186410 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
| id |
ES_2f9edcbdedea837bbdbad72cd22b6ecd |
|---|---|
| oai_identifier_str |
oai:recercat.cat:2445/186410 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| spelling |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violationCamboni, AlessandroCoquereau, S.Garrido Beltrán, LluísGascon, D.Graciani Diaz, RicardoMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente JoséAlfonso Albero, AlejandroCalvo Gomez, M.Gironella Gironell, P.Vazquez Gomez, R.LHCb CollaborationHadronsGran Col·lisionador d'HadronsFísica de partículesExperimentsHadronsLarge Hadron Collider (France and Switzerland)Particle physicsExperimentsA search for CP violation in the decay Λ b 0 → pK - μ + μ - is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb-1. The Λ b 0 → pK - μ + μ - decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, Δ A_{CP}≡ A_{CP}({Λ}_b^0\to p{K}-{μ}+{μ}-)-{A}_{CP}({Λ}_b^0\to p{K}-J/ψ ) and a {a}_{CP}^{\widehat{T}- odd} , where the latter is based on asymmetries in the angle between the μ + μ - and pK - decay planes.Springer Verlag2022202220172022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion17 p.application/pdfhttps://hdl.handle.net/2445/186410Articles 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/JHEP06(2017)108Journal of High Energy Physics, 2017, vol. 2017, num. 108, p. 1-17https://doi.org/10.1007/JHEP06(2017)108cc-by (c) Camboni, Alessandro et al., 2017https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1864102026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| title |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| spellingShingle |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation Camboni, Alessandro 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 → pK - μ + μ - and a search for CP violation |
| title_full |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| title_fullStr |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| title_full_unstemmed |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| title_sort |
Observation of the decay Λ b 0 → pK - μ + μ - and a search for CP violation |
| dc.creator.none.fl_str_mv |
Camboni, Alessandro Coquereau, S. Garrido Beltrán, Lluís Gascon, D. Graciani Diaz, Ricardo Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Alfonso Albero, Alejandro Calvo Gomez, M. Gironella Gironell, P. Vazquez Gomez, R. LHCb Collaboration |
| author |
Camboni, Alessandro |
| author_facet |
Camboni, Alessandro Coquereau, S. Garrido Beltrán, Lluís Gascon, D. Graciani Diaz, Ricardo Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Alfonso Albero, Alejandro Calvo Gomez, M. Gironella Gironell, P. Vazquez Gomez, R. LHCb Collaboration |
| author_role |
author |
| author2 |
Coquereau, S. Garrido Beltrán, Lluís Gascon, D. Graciani Diaz, Ricardo Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Alfonso Albero, Alejandro Calvo Gomez, M. Gironella Gironell, P. Vazquez Gomez, R. LHCb Collaboration |
| author2_role |
author author author 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 |
A search for CP violation in the decay Λ b 0 → pK - μ + μ - is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb-1. The Λ b 0 → pK - μ + μ - decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, Δ A_{CP}≡ A_{CP}({Λ}_b^0\to p{K}-{μ}+{μ}-)-{A}_{CP}({Λ}_b^0\to p{K}-J/ψ ) and a {a}_{CP}^{\widehat{T}- odd} , where the latter is based on asymmetries in the angle between the μ + μ - and pK - decay planes. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2022 2022 2022 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/186410 |
| url |
https://hdl.handle.net/2445/186410 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: https://doi.org/10.1007/JHEP06(2017)108 Journal of High Energy Physics, 2017, vol. 2017, num. 108, p. 1-17 https://doi.org/10.1007/JHEP06(2017)108 |
| dc.rights.none.fl_str_mv |
cc-by (c) Camboni, Alessandro et al., 2017 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
cc-by (c) Camboni, Alessandro et al., 2017 https://creativecommons.org/licenses/by/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
17 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Springer Verlag |
| publisher.none.fl_str_mv |
Springer Verlag |
| dc.source.none.fl_str_mv |
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) |
| instname_str |
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| reponame_str |
Recercat. Dipósit de la Recerca de Catalunya |
| collection |
Recercat. Dipósit de la Recerca de Catalunya |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869405490088247296 |
| score |
15,811543 |