Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/140640
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dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorBABAR Collaboration-
dc.date.accessioned2019-09-20T10:09:10Z-
dc.date.available2019-09-20T10:09:10Z-
dc.date.issued2005-04-08-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/2445/140640-
dc.description.abstractWe search for the decay B 0 → ρ 0 ρ 0 in a data sample of about 227 × 10 6 Υ ( 4 S ) → B ¯¯¯ B decays collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at SLAC. We find no significant signal and set an upper limit of 1.1 × 10 − 6 at 90% C.L. on the branching fraction. As a result, the uncertainty due to penguin contributions on the Cabibbo-Kobayashi-Maskawa unitarity angle α measured in B → ρ ρ decays is decreased to 11° at 68% C.L.-
dc.format.extent7 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.94.131801-
dc.relation.ispartofPhysical Review Letters, 2005, vol. 94, num. 13, p. 131801-
dc.relation.urihttps://doi.org/10.1103/PhysRevLett.94.131801-
dc.rights(c) American Physical Society, 2005-
dc.subject.classificationFísica de partícules-
dc.subject.classificationExperiments-
dc.subject.otherParticle physics-
dc.subject.otherExperiments-
dc.titleLimit on the B0→ρ0ρ0 Branching Fraction and Implications for the Cabibbo-Kobayashi-Maskawa Angle α-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec539092-
dc.date.updated2019-09-20T10:09:10Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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