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1826199876043538432
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MIT
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© 2018, The Author(s). The B¯s0→χc2K+K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c2 window around the ϕ mass, is found to be ℬ(B¯s0→χc2K+K−)ℬ(B¯s0→χc1K+K−)=(17.1±3.1±0.4±0.9)%, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode B¯s0→χc1K+K− allows the Bs0 mass to be measured as m(Bs0)=5366.83±0.25±0.27MeV/c2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the Bs0 mass is made.[Figure not available: see fulltext.]
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2024-09-23T11:27:29Z
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Article
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mit-1721.1/134746
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Massachusetts Institute of Technology
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English
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2024-09-23T11:27:29Z
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2021
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dspace
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mit-1721.1/1347462022-04-01T17:20:48Z Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region © 2018, The Author(s). The B¯s0→χc2K+K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c2 window around the ϕ mass, is found to be ℬ(B¯s0→χc2K+K−)ℬ(B¯s0→χc1K+K−)=(17.1±3.1±0.4±0.9)%, where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode B¯s0→χc1K+K− allows the Bs0 mass to be measured as m(Bs0)=5366.83±0.25±0.27MeV/c2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the Bs0 mass is made.[Figure not available: see fulltext.] 2021-10-27T20:08:57Z 2021-10-27T20:08:57Z 2018-08-01 2021-04-30T11:53:41Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134746 en 10.1007/JHEP08(2018)191 Journal of High Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer
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| spellingShingle |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title_full |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title_fullStr |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title_full_unstemmed |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title_short |
Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
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| title_sort |
observation of the decay b¯s0 χc2 sup k sup sup k sup in the ϕ mass region
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| url |
https://hdl.handle.net/1721.1/134746
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