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http://hdl.handle.net/2445/131621
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DC Field | Value | Language |
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dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-05T11:16:28Z | - |
dc.date.available | 2019-04-05T11:16:28Z | - |
dc.date.issued | 2009-11-03 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131621 | - |
dc.description.abstract | We 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.extent | 14 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.80.092001 | - |
dc.relation.ispartof | Physical Review D, 2009, vol. 80, num. 9, p. 092001 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.80.092001 | - |
dc.rights | (c) American Physical Society, 2009 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Measurement of CP violation observables and parameters for the decays B±→DK*± | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577734 | - |
dc.date.updated | 2019-04-05T11:16:29Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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577734.pdf | 570.34 kB | Adobe PDF | View/Open |
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