Measurement of the CP-violating phase [phi]s from Bs0→J/[psi]π+π− decays in 13 TeV pp collisions
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-v...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
18 July 2019
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| In: |
Physics letters
Year: 2019, Jahrgang: 797 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2019.07.036 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1016/j.physletb.2019.07.036 Verlag: http://www.sciencedirect.com/science/article/pii/S0370269319304939 |
| Verfasserangaben: | LHCb Collaboration* |
MARC
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| 245 | 1 | 0 | |a Measurement of the CP-violating phase [phi]s from Bs0→J/[psi]π+π− decays in 13 TeV pp collisions |c LHCb Collaboration* |
| 246 | 3 | 0 | |a ϕ ψ proton-proton collisions |
| 246 | 3 | 3 | |a Measurement of the CP-violating phase [phi] s from B s 0 → J/[psi] π + π − decays in 13 TeV pp collisions |
| 264 | 1 | |c 18 July 2019 | |
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| 500 | |a Im Titel ist der Buchstabe "s" tiefgestellt | ||
| 500 | |a Im Titel ist die Zahl "0" sowie die Zeichen "+" und "-" hochgestellt | ||
| 500 | |a Im Titel sind [phi] und [psi] als griechische Buchstaben dargestellt | ||
| 500 | |a Gesehen am 24.10.2019 | ||
| 500 | |a *LHCb Collaboration: R. Aaij, S. Bachmann, D. Berninghoff, M. Borsato, S. Braun, A. Comerma-Montells, P. D'Argent, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, J. Hu, M. Kecke, M. Kolpin, B. Leverington, H. Malygina, J. Marks, D.S. Mitzel, S. Neubert, A. Piucci, N. Skidmore, M. Stahl, S. Stemmle, U. Uwer, A. Zhelezov [und 822 weitere Personen] | ||
| 520 | |a 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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