Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays
Searches for CP violation in the decays D + (s) → ηπ+ and D + (s) → η 0π + are performed using pp collision data corresponding to 6 fb−1 of integrated luminosity collected by the LHCb experiment. The calibration channels D + (s) → φπ+ are used to remove production and detection asymmetries. The resu...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dnet:dau_________::38d88980cfb8b9552ce741fd4e16670c |
| Acceso en línea: | https://hdl.handle.net/20.500.14342/6425 https://doi.org/10.1007/JHEP04(2023)081 |
| Access Level: | acceso abierto |
| Palabra clave: | Circular Dichroism Spectroscopy Experimental Particle Physics Experimental Nuclear Physics Nuclear and Particle Physics Nuclear Physics Particle Physics Gran col·lisionador d'hadrons (França i Suïssa) Charm Physics CP Violation Flavour Physics Hadron-Hadron Scattering 51 53 539 |
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Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decaysValls Canudas, NúriaCalvo Gomez, MiriamVilasis-Cardona, XavierGolobardes Ribé, ElisabetLHCb Collaboration - CERNCircular Dichroism SpectroscopyExperimental Particle PhysicsExperimental Nuclear PhysicsNuclear and Particle PhysicsNuclear PhysicsParticle PhysicsGran col·lisionador d'hadrons (França i Suïssa)Charm PhysicsCP ViolationFlavour PhysicsHadron-Hadron Scattering5153539Searches for CP violation in the decays D + (s) → ηπ+ and D + (s) → η 0π + are performed using pp collision data corresponding to 6 fb−1 of integrated luminosity collected by the LHCb experiment. The calibration channels D + (s) → φπ+ are used to remove production and detection asymmetries. The resulting CP-violating asymmetries are A CP (D+ → ηπ+) = (0.34 ± 0.66 ± 0.16 ± 0.05)%, A CP (D+ s → ηπ+) = (0.32 ± 0.51 ± 0.12)%, A CP (D+ → η 0π +) = (0.49 ± 0.18 ± 0.06 ± 0.05)%, A CP (D+ s → η 0π +) = (0.01 ± 0.12 ± 0.08)%, where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+ channels, is due to the uncertainty on ACP (D+ → φπ+). These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CP violation. A combination of these results with previous LHCb measurements is presented.info:eu-repo/semantics/publishedVersionSpringer NatureUniversitat Ramon Llull. La SalleCERN2026202620222023info:eu-repo/semantics/article23 p.application/pdfhttps://hdl.handle.net/20.500.14342/6425https://doi.org/10.1007/JHEP04(2023)081reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésJournal of High Energy Physics, 2023, Vol. 2023, 81© CERNAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:dau_________::38d88980cfb8b9552ce741fd4e16670c2026-06-21T06:40:37Z |
| dc.title.none.fl_str_mv |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| title |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| spellingShingle |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays Valls Canudas, Núria Circular Dichroism Spectroscopy Experimental Particle Physics Experimental Nuclear Physics Nuclear and Particle Physics Nuclear Physics Particle Physics Gran col·lisionador d'hadrons (França i Suïssa) Charm Physics CP Violation Flavour Physics Hadron-Hadron Scattering 51 53 539 |
| title_short |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| title_full |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| title_fullStr |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| title_full_unstemmed |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| title_sort |
Measurement of CP asymmetries in D+ (s) → ηπ+ and D+ (s) → η 0π + decays |
| dc.creator.none.fl_str_mv |
Valls Canudas, Núria Calvo Gomez, Miriam Vilasis-Cardona, Xavier Golobardes Ribé, Elisabet LHCb Collaboration - CERN |
| author |
Valls Canudas, Núria |
| author_facet |
Valls Canudas, Núria Calvo Gomez, Miriam Vilasis-Cardona, Xavier Golobardes Ribé, Elisabet LHCb Collaboration - CERN |
| author_role |
author |
| author2 |
Calvo Gomez, Miriam Vilasis-Cardona, Xavier Golobardes Ribé, Elisabet LHCb Collaboration - CERN |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
Universitat Ramon Llull. La Salle CERN |
| dc.subject.none.fl_str_mv |
Circular Dichroism Spectroscopy Experimental Particle Physics Experimental Nuclear Physics Nuclear and Particle Physics Nuclear Physics Particle Physics Gran col·lisionador d'hadrons (França i Suïssa) Charm Physics CP Violation Flavour Physics Hadron-Hadron Scattering 51 53 539 |
| topic |
Circular Dichroism Spectroscopy Experimental Particle Physics Experimental Nuclear Physics Nuclear and Particle Physics Nuclear Physics Particle Physics Gran col·lisionador d'hadrons (França i Suïssa) Charm Physics CP Violation Flavour Physics Hadron-Hadron Scattering 51 53 539 |
| description |
Searches for CP violation in the decays D + (s) → ηπ+ and D + (s) → η 0π + are performed using pp collision data corresponding to 6 fb−1 of integrated luminosity collected by the LHCb experiment. The calibration channels D + (s) → φπ+ are used to remove production and detection asymmetries. The resulting CP-violating asymmetries are A CP (D+ → ηπ+) = (0.34 ± 0.66 ± 0.16 ± 0.05)%, A CP (D+ s → ηπ+) = (0.32 ± 0.51 ± 0.12)%, A CP (D+ → η 0π +) = (0.49 ± 0.18 ± 0.06 ± 0.05)%, A CP (D+ s → η 0π +) = (0.01 ± 0.12 ± 0.08)%, where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+ channels, is due to the uncertainty on ACP (D+ → φπ+). These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CP violation. A combination of these results with previous LHCb measurements is presented. |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022 2023 2026 2026 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.14342/6425 https://doi.org/10.1007/JHEP04(2023)081 |
| url |
https://hdl.handle.net/20.500.14342/6425 https://doi.org/10.1007/JHEP04(2023)081 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Journal of High Energy Physics, 2023, Vol. 2023, 81 |
| dc.rights.none.fl_str_mv |
© CERN Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
© CERN Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
23 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Springer Nature |
| publisher.none.fl_str_mv |
Springer Nature |
| dc.source.none.fl_str_mv |
reponame:DAU Arxiu Digital de la Universitat Ramon Llull instname:Universitat Ramon Llull (URL) |
| instname_str |
Universitat Ramon Llull (URL) |
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DAU Arxiu Digital de la Universitat Ramon Llull |
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DAU Arxiu Digital de la Universitat Ramon Llull |
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|
| repository.mail.fl_str_mv |
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1869421742860009472 |
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15,811543 |