Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays
A search for CP violation in the Λ0b→pπ−π+π− decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 fb−1 collected in pp collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The...
| Autores: | , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/174870 |
| Acceso en línea: | https://hdl.handle.net/2445/174870 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran Col·lisionador d'Hadrons Mesons (Física nuclear) Barions Large Hadron Collider (France and Switzerland) Mesons (Nuclear physics) Baryons |
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Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decaysAlfonso Albero, AlejandroCalvo Gómez, MíriamCamboni, AlessandroCoquereau, SamuelGarrido Beltrán, LluísGascón Fora, DavidGironella Gironell, PereGolobardes, ElisabetGraciani Díaz, RicardoGraugés Pous, EugeniManera Escalero, R.Vilasis-Cardona, XavierLHCb CollaborationGran Col·lisionador d'HadronsMesons (Física nuclear)BarionsLarge Hadron Collider (France and Switzerland)Mesons (Nuclear physics)BaryonsA search for CP violation in the Λ0b→pπ−π+π− decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 fb−1 collected in pp collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of CP asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global p-value is considered, all results are consistent with no CP violation. Parity violation is observed at a significance of 5.5 standard deviations for the triple product asymmetry method and 5.3 standard deviations for the energy test method. The reported deviations are given in regions of phase space.American Physical Society2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/174870Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.102.051101Physical Review D, 2020, vol. 102, num. 5, p. 051101https://doi.org/10.1103/PhysRevD.102.051101cc-by (c) Aaij, R. et al., 2020http://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1748702026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| title |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| spellingShingle |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays Alfonso Albero, Alejandro Gran Col·lisionador d'Hadrons Mesons (Física nuclear) Barions Large Hadron Collider (France and Switzerland) Mesons (Nuclear physics) Baryons |
| title_short |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| title_full |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| title_fullStr |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| title_full_unstemmed |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| title_sort |
Search for CP violation and observation of P violation in Lambda(0)(b) -> p pi(-) pi(+) pi(-) decays |
| dc.creator.none.fl_str_mv |
Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, Elisabet Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Vilasis-Cardona, Xavier LHCb Collaboration |
| author |
Alfonso Albero, Alejandro |
| author_facet |
Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, Elisabet Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Vilasis-Cardona, Xavier LHCb Collaboration |
| author_role |
author |
| author2 |
Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, Elisabet Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Vilasis-Cardona, Xavier LHCb Collaboration |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Gran Col·lisionador d'Hadrons Mesons (Física nuclear) Barions Large Hadron Collider (France and Switzerland) Mesons (Nuclear physics) Baryons |
| topic |
Gran Col·lisionador d'Hadrons Mesons (Física nuclear) Barions Large Hadron Collider (France and Switzerland) Mesons (Nuclear physics) Baryons |
| description |
A search for CP violation in the Λ0b→pπ−π+π− decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 fb−1 collected in pp collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of CP asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global p-value is considered, all results are consistent with no CP violation. Parity violation is observed at a significance of 5.5 standard deviations for the triple product asymmetry method and 5.3 standard deviations for the energy test method. The reported deviations are given in regions of phase space. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 |
| 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/2445/174870 |
| url |
https://hdl.handle.net/2445/174870 |
| 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/10.1103/PhysRevD.102.051101 Physical Review D, 2020, vol. 102, num. 5, p. 051101 https://doi.org/10.1103/PhysRevD.102.051101 |
| dc.rights.none.fl_str_mv |
cc-by (c) Aaij, R. et al., 2020 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess |
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cc-by (c) Aaij, R. et al., 2020 http://creativecommons.org/licenses/by/3.0/es/ |
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openAccess |
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application/pdf |
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American Physical Society |
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American Physical Society |
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Articles publicats en revistes (Física Quàntica i Astrofísica) reponame:Dipòsit Digital de la UB instname:Universidad de Barcelona |
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Universidad de Barcelona |
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Dipòsit Digital de la UB |
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Dipòsit Digital de la UB |
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