Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ
We report a study of the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − decays, where the neutral D meson is detected through its decays to the K∓π ± and CP-even K+K− and π +π − final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb exper...
| Authors: | , , , , , , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2015 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/186392 |
| Online Access: | https://hdl.handle.net/2445/186392 |
| Access Level: | Open access |
| Keyword: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
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Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γBadalov, AlexeyCasanova Mohr, R.Garrido Beltrán, LluísGascón Fora, DavidGraciani Diaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)LHCb collaborationHadronsGran Col·lisionador d'HadronsFísica de partículesExperimentsHadronsLarge Hadron Collider (France and Switzerland)Particle physicsExperimentsWe report a study of the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − decays, where the neutral D meson is detected through its decays to the K∓π ± and CP-even K+K− and π +π − final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1 . We observe the first significant signals in the CP-even final states of the D meson for both the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − modes, as well as in the doubly Cabibbo-suppressed D → K+π − final state of the B− → Dπ−π +π − decay. Evidence for the ADS suppressed decay B− → DK−π +π −, with D → K+π −, is also presented. From the observed yields in the B− → DK−π +π −, B− → Dπ−π +π − and their charge conjugate decay modes, the most probably value of the weak phase γ corresponds to γ = (74+20 −19) o . This is one of the most precise single-measurement determinations of γ to date.American Physical Society2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/186392Articles 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.92.112005Physical Review D, 2015, vol. 92, num. 112005, p. 1-34https://doi.org/10.1103/PhysRevD.92.112005(c) American Physical Society, 2015info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1863922026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| title |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| spellingShingle |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ Badalov, Alexey Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
| title_short |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| title_full |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| title_fullStr |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| title_full_unstemmed |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| title_sort |
Study of B-→D K-π+π- and B-→D π-π+π- decays and determination of the CKM angle γ |
| dc.creator.none.fl_str_mv |
Badalov, Alexey Casanova Mohr, R. Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) LHCb collaboration |
| author |
Badalov, Alexey |
| author_facet |
Badalov, Alexey Casanova Mohr, R. Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) LHCb collaboration |
| author_role |
author |
| author2 |
Casanova Mohr, R. Garrido Beltrán, Lluís Gascón Fora, David Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) LHCb collaboration |
| author2_role |
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 |
We report a study of the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − decays, where the neutral D meson is detected through its decays to the K∓π ± and CP-even K+K− and π +π − final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1 . We observe the first significant signals in the CP-even final states of the D meson for both the suppressed B− → DK−π +π − and favored B− → Dπ−π +π − modes, as well as in the doubly Cabibbo-suppressed D → K+π − final state of the B− → Dπ−π +π − decay. Evidence for the ADS suppressed decay B− → DK−π +π −, with D → K+π −, is also presented. From the observed yields in the B− → DK−π +π −, B− → Dπ−π +π − and their charge conjugate decay modes, the most probably value of the weak phase γ corresponds to γ = (74+20 −19) o . This is one of the most precise single-measurement determinations of γ to date. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015 |
| 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/2445/186392 |
| url |
https://hdl.handle.net/2445/186392 |
| 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.92.112005 Physical Review D, 2015, vol. 92, num. 112005, p. 1-34 https://doi.org/10.1103/PhysRevD.92.112005 |
| dc.rights.none.fl_str_mv |
(c) American Physical Society, 2015 info:eu-repo/semantics/openAccess |
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(c) American Physical Society, 2015 |
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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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