Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/140512
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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 | 2019-09-19T12:50:11Z | - |
dc.date.available | 2019-09-19T12:50:11Z | - |
dc.date.issued | 2006-06-13 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/140512 | - |
dc.description.abstract | We present the first measurement of Υ ( 4 S ) decays to π + π − Υ ( 1 S ) and π + π − Υ ( 2 S ) based on a sample of 230 × 10 6 Υ ( 4 S ) mesons collected with the BABAR detector. We measure the product branching fractions B ( Υ ( 4 S ) → π + π − Υ ( 1 S ) ) × B ( Υ ( 1 S ) → μ + μ − ) = ( 2.23 ± 0.25 stat ± 0.27 syst ) × 10 − 6 and B ( Υ ( 4 S ) → π + π − Υ ( 2 S ) ) × B ( Υ ( 2 S ) → μ + μ − ) = ( 1.69 ± 0.26 stat ± 0.20 syst ) × 10 − 6 , from which we derive the partial widths Γ ( Υ ( 4 S ) → π + π − Υ ( 1 S ) ) = ( 1.8 ± 0.4 ) keV and Γ ( Υ ( 4 S ) → π + π − Υ ( 2 S ) ) = ( 2.7 ± 0.8 ) keV . | - |
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/PhysRevLett.96.232001 | - |
dc.relation.ispartof | Physical Review Letters, 2006, vol. 96, num. 23, p. 232001 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.96.232001 | - |
dc.rights | (c) American Physical Society, 2006 | - |
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 Υ(4S) Decays to π+π−Υ(1S) and π+π−Υ(2S) | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 542582 | - |
dc.date.updated | 2019-09-19T12:50:11Z | - |
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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542582.pdf | 541.18 kB | Adobe PDF | View/Open |
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