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http://hdl.handle.net/2445/140219
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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 | 2019-09-17T10:09:07Z | - |
dc.date.available | 2019-09-17T10:09:07Z | - |
dc.date.issued | 2007-11-15 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/140219 | - |
dc.description.abstract | We present a search for the lepton flavor violating decay B + → K + τ ∓ μ ± using 383 × 10 6 B ¯¯¯ B events collected by the BABAR experiment. The branching fraction for this decay can be substantially enhanced in new physics models. The kinematics of the tau from the signal B decay are inferred from the K + , μ , and other B in the event, which is fully reconstructed in one of a variety of hadronic decay modes, allowing the signal B candidate to be fully reconstructed. We observe no excess of events over the expected background and set a limit of B ( B + → K + τ μ ) < 7.7 × 10 − 5 at 90% confidence level, where the branching fraction is for the sum of the K + τ − μ + and K + τ + μ − final states. We use this result to improve a model-independent bound on the energy scale of flavor-changing new physics. | - |
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/PhysRevLett.99.201801 | - |
dc.relation.ispartof | Physical Review Letters, 2007, vol. 99, num. 20, p. 201801 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.99.201801 | - |
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 | Search for the Decay B+→K+τ∓μ± | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 558178 | - |
dc.date.updated | 2019-09-17T10:09:07Z | - |
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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558178.pdf | 181.69 kB | Adobe PDF | View/Open |
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