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1826208720210624512
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MIT
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© 2019 The Author Decays of Bs0 and B‾0s mesons into J/ψπ+π− final states are studied in a data sample corresponding to 1.9 fb−1 of integrated luminosity collected with the LHCb detector in 13 TeV pp collisions. A time-dependent amplitude analysis is used to determine the final-state resonance contributions, the CP-violating phase ϕs=−0.057±0.060±0.011 rad, the decay-width difference between the heavier mass Bs0 eigenstate and the B0 meson of −0.050±0.004±0.004 ps−1, and the CP-violating parameter |λ|=1.01−0.06+0.08±0.03, where the first uncertainty is statistical and the second systematic. These results are combined with previous LHCb measurements in the same decay channel using 7 TeV and 8 TeV pp collisions obtaining ϕs=0.002±0.044±0.012 rad, and |λ|=0.949±0.036±0.019.
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2024-09-23T14:10:44Z
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Article
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mit-1721.1/133428
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Massachusetts Institute of Technology
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English
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2024-09-23T14:10:44Z
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2021
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Elsevier BV
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dspace
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| spelling |
mit-1721.1/1334282022-04-01T17:20:48Z Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions © 2019 The Author Decays of Bs0 and B‾0s mesons into J/ψπ+π− final states are studied in a data sample corresponding to 1.9 fb−1 of integrated luminosity collected with the LHCb detector in 13 TeV pp collisions. A time-dependent amplitude analysis is used to determine the final-state resonance contributions, the CP-violating phase ϕs=−0.057±0.060±0.011 rad, the decay-width difference between the heavier mass Bs0 eigenstate and the B0 meson of −0.050±0.004±0.004 ps−1, and the CP-violating parameter |λ|=1.01−0.06+0.08±0.03, where the first uncertainty is statistical and the second systematic. These results are combined with previous LHCb measurements in the same decay channel using 7 TeV and 8 TeV pp collisions obtaining ϕs=0.002±0.044±0.012 rad, and |λ|=0.949±0.036±0.019. 2021-10-27T19:52:49Z 2021-10-27T19:52:49Z 2019 2021-04-09T17:16:05Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133428 en 10.1016/J.PHYSLETB.2019.07.036 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier
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| spellingShingle |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title_full |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title_fullStr |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title_full_unstemmed |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title_short |
Measurement of the CP-violating phase ϕ from B s 0 → J / ψ π + π − decays in 13 TeV pp collisions
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| title_sort |
measurement of the cp violating phase ϕ from b s 0 j ψ π π decays in 13 tev pp collisions
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| url |
https://hdl.handle.net/1721.1/133428
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