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First observation of a baryonic B_{s}^{0} decay
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Costa Sobral, Cayo, Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Mathad, Abhijit , O'Hanlon, Daniel P., Poluektov, Anton, Qian, W., Wallace, Charlotte and Wicht, Jean). (2017) First observation of a baryonic B_{s}^{0} decay. Physical Review Letters, 119 (4). 041802. doi:10.1103/PhysRevLett.119.041802 ISSN 0031-9007.
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Official URL: http://doi.org/10.1103/PhysRevLett.119.041802
Abstract
We report the first observation of a baryonic B_{s}^{0} decay, B_{s}^{0}→pΛ[over ¯]K^{-}, using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3.0 fb^{-1}. The branching fraction is measured to be B(B_{s}^{0}→pΛ[over ¯]K^{-})+B(B_{s}^{0}→p[over ¯]ΛK^{+})=[5.46±0.61±0.57±0.50(B)±0.32(f_{s}/f_{d})]×10^{-6}, where the first uncertainty is statistical and the second systematic, the third uncertainty accounts for the experimental uncertainty on the branching fraction of the B^{0}→pΛ[over ¯]π^{-} decay used for normalization, and the fourth uncertainty relates to the knowledge of the ratio of b-quark hadronization probabilities f_{s}/f_{d}.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Journal or Publication Title: | Physical Review Letters | ||||||
| Publisher: | American Physical Society | ||||||
| ISSN: | 0031-9007 | ||||||
| Official Date: | 28 July 2017 | ||||||
| Dates: |
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| Volume: | 119 | ||||||
| Number: | 4 | ||||||
| Article Number: | 041802 | ||||||
| DOI: | 10.1103/PhysRevLett.119.041802 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Reuse Statement (publisher, data, author rights): | ** From PubMed via Jisc Publications Router. ** History: received 28-04-2017. | ||||||
| Access rights to Published version: | Open Access (Creative Commons) |
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