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http://hdl.handle.net/2445/131431
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DC Field | Value | Language |
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dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-04T13:37:33Z | - |
dc.date.available | 2019-04-04T13:37:33Z | - |
dc.date.issued | 2007-02-06 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131431 | - |
dc.description.abstract | Using 65 × 10 6 Υ ( 4 S ) → B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B ( ¯¯¯ B 0 → D + π − ) = ( 2.55 ± 0.05 ± 0.16 ) × 10 − 3 , B ( ¯¯¯ B 0 → D * + π − ) = ( 2.79 ± 0.08 ± 0.17 ) × 10 − 3 , B ( B − → D 0 π − ) = ( 4.90 ± 0.07 ± 0.22 ) × 10 − 3 and B ( B − → D * 0 π − ) = ( 5.52 ± 0.17 ± 0.42 ) × 10 − 3 , where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay ¯¯¯ B 0 → D ( * ) 0 π 0 , the cosines of the strong phase difference δ between the I = 1 / 2 and I = 3 / 2 isospin amplitudes are determined to be cos δ = 0.872 + 0.008 + 0.031 − 0.007 − 0.029 for the ¯¯¯ B → D π process and cos δ = 0.924 + 0.019 + 0.063 − 0.017 − 0.054 for the ¯¯¯ B → D ∗ π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the D π system. | - |
dc.format.extent | 7 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.75.031101 | - |
dc.relation.ispartof | Physical Review D, 2007, vol. 75, num. 3, p. 031101(R) | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.75.031101 | - |
dc.rights | (c) American Physical Society, 2007 | - |
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 | Branching fraction measurement of ¯B0 → D(*)+π− and B− → D(*)0π−and isospin analysis of ¯B → D(*)π decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 551684 | - |
dc.date.updated | 2019-04-04T13:37:33Z | - |
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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551684.pdf | 247.22 kB | Adobe PDF | View/Open |
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