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Measurement of the semileptonic CP asymmetry in B0-B¯0 mixing
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte and Whitehead, M. (Mark)). (2015) Measurement of the semileptonic CP asymmetry in B0-B¯0 mixing. Physical Review Letters, 114 (4). 041601. doi:10.1103/PhysRevLett.114.041601
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PhysRevLett.114.041601.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (311Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.114.041601
Abstract
The semileptonic CP asymmetry in B0-¯B0 mixing, adsl, is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, recorded by the LHCb experiment. Semileptonic B0 decays are reconstructed in the inclusive final states D−μ+ and D*−μ+, where the D− meson decays into the K+π−π− final state and the D*− meson into the ¯D0(→K+π−)π− final state. The asymmetry between the numbers of D(*)−μ+ and D(*)+μ− decays is measured as a function of the decay time of the B0 mesons. The CP asymmetry is measured to be adsl=(−0.02±0.19±0.30)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of adsl to date and is consistent with the prediction from the standard model.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||
| Divisions: | Faculty of Science > Physics | ||||||
| Journal or Publication Title: | Physical Review Letters | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 0031-9007 | ||||||
| Official Date: | 28 January 2015 | ||||||
| Dates: |
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| Date of first compliant deposit: | 30 July 2019 | ||||||
| Volume: | 114 | ||||||
| Number: | 4 | ||||||
| Article Number: | 041601 | ||||||
| DOI: | 10.1103/PhysRevLett.114.041601 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access |
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