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http://hdl.handle.net/2445/131545
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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 | 2019-04-05T10:40:38Z | - |
dc.date.available | 2019-04-05T10:40:38Z | - |
dc.date.issued | 2008-03-12 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131545 | - |
dc.description.abstract | We present a measurement of the branching fraction and photon-energy spectrum for the decay B → X s γ using data from the BABAR experiment. The data sample corresponds to an integrated luminosity of 210 fb − 1 , from which approximately 680 000 B ¯¯¯ B events are tagged by a fully reconstructed hadronic decay of one of the B mesons. In the decay of the second B meson, an isolated high-energy photon is identified. We measure B ( B → X s γ ) = ( 3.66 ± 0.85 stat ± 0.60 syst ) × 10 − 4 for photon energies E γ above 1.9 GeV in the B rest frame. From the measured spectrum we calculate the first and second moments for different minimum photon energies, which are used to extract the heavy-quark parameters m b and μ 2 π . In addition, measurements of the direct C P asymmetry and isospin asymmetry are presented. | - |
dc.format.extent | 8 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.77.051103 | - |
dc.relation.ispartof | Physical Review D, 2008, vol. 77, num. 5, p. 051103 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.77.051103 | - |
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 the B→Xsγ branching fraction and photon energy spectrum using the recoil method | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577699 | - |
dc.date.updated | 2019-04-05T10:40:38Z | - |
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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577699.pdf | 185.29 kB | Adobe PDF | View/Open |
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