Branching fraction measurement of B+→ωℓ+ν decays
We present a measurement of the B + → ω ℓ + ν branching fraction based on a sample of 467 million B ¯¯¯ B pairs recorded by the BABAR detector at the SLAC PEP-II e + e − collider. We observe 1125 ± 131 signal decays, corresponding to a branching fraction of B ( B + → ω ℓ + ν ) = ( 1.21 ± 0.14 ± 0.08...
| Autores: | , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2013 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositório: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/131822 |
| Acesso em linha: | https://hdl.handle.net/2445/131822 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Física de partícules Experiments Particle physics |
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Branching fraction measurement of B+→ωℓ+ν decaysGarra Ticó, JordiGraugés Pous, EugeniBABAR CollaborationFísica de partículesExperimentsParticle physicsExperimentsWe present a measurement of the B + → ω ℓ + ν branching fraction based on a sample of 467 million B ¯¯¯ B pairs recorded by the BABAR detector at the SLAC PEP-II e + e − collider. We observe 1125 ± 131 signal decays, corresponding to a branching fraction of B ( B + → ω ℓ + ν ) = ( 1.21 ± 0.14 ± 0.08 ) × 10 − 4 , where the first error is statistical and the second is systematic. The dependence of the decay rate on q 2 , the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.American Physical Society2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/131822Articles 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.87.032004Physical Review D, 2013, vol. 87, num. 3, p. 032004https://doi.org/10.1103/PhysRevD.87.032004(c) American Physical Society, 2013info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1318222026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
Branching fraction measurement of B+→ωℓ+ν decays |
| title |
Branching fraction measurement of B+→ωℓ+ν decays |
| spellingShingle |
Branching fraction measurement of B+→ωℓ+ν decays Garra Ticó, Jordi Física de partícules Experiments Particle physics Experiments |
| title_short |
Branching fraction measurement of B+→ωℓ+ν decays |
| title_full |
Branching fraction measurement of B+→ωℓ+ν decays |
| title_fullStr |
Branching fraction measurement of B+→ωℓ+ν decays |
| title_full_unstemmed |
Branching fraction measurement of B+→ωℓ+ν decays |
| title_sort |
Branching fraction measurement of B+→ωℓ+ν decays |
| dc.creator.none.fl_str_mv |
Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
| author |
Garra Ticó, Jordi |
| author_facet |
Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
| author_role |
author |
| author2 |
Graugés Pous, Eugeni BABAR Collaboration |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Física de partícules Experiments Particle physics Experiments |
| topic |
Física de partícules Experiments Particle physics Experiments |
| description |
We present a measurement of the B + → ω ℓ + ν branching fraction based on a sample of 467 million B ¯¯¯ B pairs recorded by the BABAR detector at the SLAC PEP-II e + e − collider. We observe 1125 ± 131 signal decays, corresponding to a branching fraction of B ( B + → ω ℓ + ν ) = ( 1.21 ± 0.14 ± 0.08 ) × 10 − 4 , where the first error is statistical and the second is systematic. The dependence of the decay rate on q 2 , the invariant mass squared of the leptons, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules. |
| publishDate |
2013 |
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2013 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/131822 |
| url |
https://hdl.handle.net/2445/131822 |
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Inglés |
| language_invalid_str_mv |
Inglés |
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Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.032004 Physical Review D, 2013, vol. 87, num. 3, p. 032004 https://doi.org/10.1103/PhysRevD.87.032004 |
| dc.rights.none.fl_str_mv |
(c) American Physical Society, 2013 info:eu-repo/semantics/openAccess |
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(c) American Physical Society, 2013 |
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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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15.300724 |