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1811074862836350976
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MIT
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© 2018, The Author(s). The Cabibbo-suppressed decay Λb0 → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λb0 → ψ(2S)pK− decay mode is measured to be ℬ(Λb0→ψ(2S)pπ−)ℬ(Λb0→ψ(2S)pK−)=(11.4±1.3±0.2)%, where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π− mass spectra are investigated and no evidence for exotic resonances is found.[Figure not available: see fulltext.].
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2024-09-23T09:56:34Z
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Article
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mit-1721.1/134730
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Massachusetts Institute of Technology
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English
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2024-09-23T09:56:34Z
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2021
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dspace
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mit-1721.1/1347302022-04-01T17:20:48Z Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup> © 2018, The Author(s). The Cabibbo-suppressed decay Λb0 → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λb0 → ψ(2S)pK− decay mode is measured to be ℬ(Λb0→ψ(2S)pπ−)ℬ(Λb0→ψ(2S)pK−)=(11.4±1.3±0.2)%, where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π− mass spectra are investigated and no evidence for exotic resonances is found.[Figure not available: see fulltext.]. 2021-10-27T20:08:53Z 2021-10-27T20:08:53Z 2018-08-01 2021-04-30T11:55:40Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134730 en 10.1007/JHEP08(2018)131 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 Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title |
Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title_full |
Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title_fullStr |
Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title_full_unstemmed |
Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title_short |
Observation of the decay Λ <inf>b</inf><sup>0</sup> → ψ(2S)pπ<sup>−</sup>
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| title_sort |
observation of the decay λ inf b inf sup 0 sup ψ 2s pπ sup sup
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| url |
https://hdl.handle.net/1721.1/134730
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