Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131621
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dc.contributor.authorGarra Ticó, Jordi-
dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorBABAR Collaboration-
dc.date.accessioned2019-04-05T11:16:28Z-
dc.date.available2019-04-05T11:16:28Z-
dc.date.issued2009-11-03-
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/2445/131621-
dc.description.abstractWe study the decay B − → D K * − using a sample of 379 × 10 6 Υ ( 4 S ) → B ¯¯¯ B events collected with the BABAR detector at the PEP-II B factory. We perform a Gronau-London-Wyler analysis where the D meson decays into either a C P -even ( C P + ) eigenstate ( K + K − , π + π − ), C P -odd ( C P − ) eigenstate ( K 0 S π 0 , K 0 S ϕ , K 0 S ω ) or a non- C P state ( K − π + ). We also analyze D meson decays into K + π − from a Cabibbo-favored ¯¯¯ D 0 decay or doubly suppressed D 0 decay [Atwood-Dunietz-Soni (ADS) analysis]. We measure observables that are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ : the partial-rate charge asymmetries A C P ± , the ratios R C P ± of the B -decay branching fractions in C P ± and non- C P decay, the ratio R ADS of the charge-averaged branching fractions, and the charge asymmetry A ADS of the ADS decays: A C P + = 0.09 ± 0.13 ± 0.06 , A C P − = − 0.23 ± 0.21 ± 0.07 , R C P + = 2.17 ± 0.35 ± 0.09 , R C P − = 1.03 ± 0.27 ± 0.13 , R ADS = 0.066 ± 0.031 ± 0.010 , and A ADS = − 0.34 ± 0.43 ± 0.16 , where the first uncertainty is statistical and the second is systematic. Combining all the measurements and using a frequentist approach yields the magnitude of the ratio between the Cabibbo-suppressed and favored amplitudes, r B = 0.31 with a one (two) sigma confidence level interval of [0.24, 0.38] ([0.17, 0.43]). The value r B = 0 is excluded at the 3.3 sigma level. A similar analysis excludes values of γ in the intervals [0, 7]°, [55, 111]°, and [175, 180]° ([85, 99]°) at the one (two) sigma confidence level.-
dc.format.extent14 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.80.092001-
dc.relation.ispartofPhysical Review D, 2009, vol. 80, num. 9, p. 092001-
dc.relation.urihttps://doi.org/10.1103/PhysRevD.80.092001-
dc.rights(c) American Physical Society, 2009-
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationFísica de partícules-
dc.subject.classificationExperiments-
dc.subject.otherParticle physics-
dc.subject.otherExperiments-
dc.titleMeasurement of CP violation observables and parameters for the decays B±→DK*±-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec577734-
dc.date.updated2019-04-05T11:16:29Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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