Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131599
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-05T11:11:35Z | - |
dc.date.available | 2019-04-05T11:11:35Z | - |
dc.date.issued | 2009-12-02 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131599 | - |
dc.description.abstract | We perform a time-dependent amplitude analysis of B 0 → K 0 S π + π − decays to extract the C P violation parameters of f 0 ( 980 ) K 0 S and ρ 0 ( 770 ) K 0 S and the direct C P asymmetry of K * + ( 892 ) π − . The results are obtained from a data sample of ( 383 ± 3 ) × 10 6 B ¯¯¯ B decays, collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. We find two solutions, with an equivalent goodness-of-fit. Including systematic and Dalitz plot model uncertainties, the combined confidence interval for values of the C P parameter β eff in B 0 decays to f 0 ( 980 ) K 0 S is 18 ° < β eff < 76 ° at 95% confidence level (C.L). C P conservation in B 0 decays to f 0 ( 980 ) K 0 S is excluded at 3.5 standard deviations including systematic uncertainties. For B 0 decays to ρ 0 ( 770 ) K 0 S , the combined confidence interval is − 9 ° < β eff < 57 ° at 95% C.L. In decays to K * + ( 892 ) π − we measure the direct C P asymmetry to be A C P = − 0.20 ± 0.10 ± 0.01 ± 0.02 . The measured phase difference (including B 0 ¯¯¯ B 0 mixing) between decay amplitudes of B 0 → K * + ( 892 ) π − and ¯¯¯ B 0 → K * − ( 892 ) π + , excludes the interval − 137 ° < Δ Φ ( K * + ( 892 ) π − ) < − 5 ° at 95% C.L. | - |
dc.format.extent | 28 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.80.112001 | - |
dc.relation.ispartof | Physical Review D, 2009, vol. 80, num. 11, p. 112001 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.80.112001 | - |
dc.rights | (c) American Physical Society, 2009 | - |
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 | Time-dependent amplitude analysis of B0→K0Sπ+π− | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577727 | - |
dc.date.updated | 2019-04-05T11:11:35Z | - |
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 | |
---|---|---|---|---|
577727.pdf | 3.12 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.