Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging
We describe in detail a previously published measurement of C P violation in B 0 - ¯ B 0 oscillations, based on an integrated luminosity of 425.7 fb − 1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million ¯ B 0 → D * + ℓ − ¯ ν ℓ deca...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/123645 |
| Acceso en línea: | https://hdl.handle.net/2445/123645 |
| Access Level: | acceso abierto |
| Palabra clave: | Partícules (Matèria) Mesons (Física nuclear) Violació CP (Física nuclear) Particles Mesons (Nuclear physics) CP violation (Nuclear physics) |
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Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon taggingGraugés Pous, EugeniBABAR CollaborationPartícules (Matèria)Mesons (Física nuclear)Violació CP (Física nuclear)ParticlesMesons (Nuclear physics)CP violation (Nuclear physics)We describe in detail a previously published measurement of C P violation in B 0 - ¯ B 0 oscillations, based on an integrated luminosity of 425.7 fb − 1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million ¯ B 0 → D * + ℓ − ¯ ν ℓ decays selected with partial reconstruction of the D * + meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a C P violating asymmetry A C P = ( N ( B 0 B 0 ) − N ( ¯ B 0 ¯ B 0 ) ) / ( N ( B 0 B 0 ) + N ( ¯ B 0 ¯ B 0 ) ) = ( 0.06 ± 0.1 7 + 0.38 − 0.32 ) % corresponding to Δ C P = 1 − | q / p | = ( 0.29 ± 0.8 4 + 1.88 − 1.61 ) × 1 0 − 3 . This measurement is consistent and competitive with those obtained at the B factories with dilepton events.American Physical Society2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/123645Articles 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.93.032001Physical Review D, 2016, vol. 93, num. 3, p. 032001-1-032001-13https://doi.org/10.1103/PhysRevD.93.032001(c) American Physical Society, 2016info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1236452026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| title |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| spellingShingle |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging Graugés Pous, Eugeni Partícules (Matèria) Mesons (Física nuclear) Violació CP (Física nuclear) Particles Mesons (Nuclear physics) CP violation (Nuclear physics) |
| title_short |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| title_full |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| title_fullStr |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| title_full_unstemmed |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| title_sort |
Search for mixing-induced CP violation using partial reconstruction of B¯0→D*+Xℓ−ν¯ℓ and kaon tagging |
| dc.creator.none.fl_str_mv |
Graugés Pous, Eugeni BABAR Collaboration |
| author |
Graugés Pous, Eugeni |
| author_facet |
Graugés Pous, Eugeni BABAR Collaboration |
| author_role |
author |
| author2 |
BABAR Collaboration |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Partícules (Matèria) Mesons (Física nuclear) Violació CP (Física nuclear) Particles Mesons (Nuclear physics) CP violation (Nuclear physics) |
| topic |
Partícules (Matèria) Mesons (Física nuclear) Violació CP (Física nuclear) Particles Mesons (Nuclear physics) CP violation (Nuclear physics) |
| description |
We describe in detail a previously published measurement of C P violation in B 0 - ¯ B 0 oscillations, based on an integrated luminosity of 425.7 fb − 1 collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million ¯ B 0 → D * + ℓ − ¯ ν ℓ decays selected with partial reconstruction of the D * + meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a C P violating asymmetry A C P = ( N ( B 0 B 0 ) − N ( ¯ B 0 ¯ B 0 ) ) / ( N ( B 0 B 0 ) + N ( ¯ B 0 ¯ B 0 ) ) = ( 0.06 ± 0.1 7 + 0.38 − 0.32 ) % corresponding to Δ C P = 1 − | q / p | = ( 0.29 ± 0.8 4 + 1.88 − 1.61 ) × 1 0 − 3 . This measurement is consistent and competitive with those obtained at the B factories with dilepton events. |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/123645 |
| url |
https://hdl.handle.net/2445/123645 |
| 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.93.032001 Physical Review D, 2016, vol. 93, num. 3, p. 032001-1-032001-13 https://doi.org/10.1103/PhysRevD.93.032001 |
| dc.rights.none.fl_str_mv |
(c) American Physical Society, 2016 info:eu-repo/semantics/openAccess |
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(c) American Physical Society, 2016 |
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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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