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http://hdl.handle.net/2445/131158
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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 | 2019-04-01T12:43:35Z | - |
dc.date.available | 2019-04-01T12:43:35Z | - |
dc.date.issued | 2011-11-29 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131158 | - |
dc.description.abstract | We report an analysis of charmless hadronic decays of charged B mesons to the final state K + π 0 π 0 , using a data sample of ( 470.9 ± 2.8 ) × 10 6 B ¯¯¯ B events collected with the BABAR detector at the Υ ( 4 S ) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and C P asymmetry to be B ( B + → K + π 0 π 0 ) = ( 16.2 ± 1.2 ± 1.5 ) × 10 − 6 and A C P ( B + → K + π 0 π 0 ) = − 0.06 ± 0.06 ± 0.04 , where the uncertainties are statistical and systematic, respectively. Additionally, we study the contributions of the B + → K ∗ ( 892 ) + π 0 , B + → f 0 ( 980 ) K + , and B + → χ c 0 K + quasi-two-body decays. We report the world's best measurements of the branching fraction and C P asymmetry of the B + → K + π 0 π 0 and B + → K ∗ ( 892 ) + π 0 channels. | - |
dc.format.extent | 11 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.84.092007 | - |
dc.relation.ispartof | Physical Review D, 2011, vol. 84, num. 9, p. 092007 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.84.092007 | - |
dc.rights | (c) American Physical Society, 2011 | - |
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 | Observation of the rare decay B+ → K+π0π0 and measurement of the quasi-two-body contributions B+ → K*(892)+π0, B+ → f0(980)K+, and B+ → χc0K+ | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 654966 | - |
dc.date.updated | 2019-04-01T12:43:36Z | - |
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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654966.pdf | 323.69 kB | Adobe PDF | View/Open |
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