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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 | 2019-04-05T10:38:01Z | - |
dc.date.available | 2019-04-05T10:38:01Z | - |
dc.date.issued | 2008-07-23 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131544 | - |
dc.description.abstract | We present a measurement of D 0 − ¯¯¯ D 0 mixing parameters using the ratios of lifetimes extracted from a sample of D 0 mesons produced through the process D * + → D 0 π + , which decay to K − π + , K − K + , or π − π + . The lifetimes of the C P -even, Cabibbo-suppressed modes K − K + and π − π + are compared with that of the C P -mixed, Cabibbo-favored mode K − π + to obtain a measurement of y C P , which in the limit of C P conservation corresponds to the mixing parameter y . The analysis is based on a data sample of 384 fb − 1 collected by the BABAR detector at the PEP-II asymmetric-energy e + e − collider. We obtain y C P = [ 1.24 ± 0.39 ( stat ) ± 0.13 ( syst ) ] % , which is evidence for D 0 − ¯¯¯ D 0 mixing at the 3 σ level, and Δ Y = [ − 0.26 ± 0.36 ( stat ) ± 0.08 ( syst ) ] % , where Δ Y constrains possible C P violation. Combining this result with a previous BABAR measurement of y C P obtained from a separate sample of D 0 → K − K + events, we obtain y C P = [ 1.03 ± 0.33 ( stat ) ± 0.19 ( syst ) ] % . | - |
dc.format.extent | 9 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.78.011105 | - |
dc.relation.ispartof | Physical Review D, 2008, vol. 78, num. 1, p. 011105 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.78.011105 | - |
dc.rights | (c) American Physical Society, 2008 | - |
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 D0−¯¯¯D0 mixing using the ratio of lifetimes for the decays D0→K−π+, K−K+, and π−π+ | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577697 | - |
dc.date.updated | 2019-04-05T10:38:01Z | - |
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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577697.pdf | 317.21 kB | Adobe PDF | View/Open |
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