Measurement of CP violation and the B0s meson decay width difference with B0s → J/ψK+K− and B0s → J/ψπ+π− decays
The time-dependent CP asymmetry in B0s→J/ψK+K− decays is measured using pp collision data at √s=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector. The decay-time distribution is characterized by the decay widths ΓL and ΓH of the light and heavy mass eigen...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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21 June 2013
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2013, Jahrgang: 87, Heft: 11, Pages: 1-21 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.87.112010 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.87.112010 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.87.112010 
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| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
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| 245 | 1 | 0 | |a Measurement of CP violation and the B0s meson decay width difference with B0s → J/ψK+K− and B0s → J/ψπ+π− decays |c R. Aaij et al. (LHCb Collaboration) |
| 246 | 3 | 3 | |a Measurement of CP violation and the B zero s meson decay width difference with B zero s → J/ psi K plus K minus and B zero s → J/ psi pi plus pi minus decays |
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| 500 | |a Im Titel sind "0", "+" und "-" hochgestellt und " s" tiefgestellt | ||
| 500 | |a LHCb Collaboration: R. Aaij, O. Aquines Gutierrez, S. Bachmann, A. Bien, J. Blouw, M. Britsch, A. Di Canto, F. Dordei, C. Färber, M. Fontana, E. Gersabeck, O. Grünberg, S. Hansmann-Menzemer, T. Hartmann, A. Jaeger, K. Kreplin, G. Krocker, B. Leverington, C. Linn, J. Marks, M. Meissner, T. Nikodem, D. Popov, M. Schmelling, P. Seyfert, S. Stahl, J. van Tilburg, U. Uwer, D. Volyanskyy, C. Voß, H. Voss, R. Waldi, S. Wandernoth, D. Wiedner, M. Zavertyaev, A. Zhelezov und weitere 586 | ||
| 500 | |a Gesehen am 20.04.2021 | ||
| 520 | |a The time-dependent CP asymmetry in B0s→J/ψK+K− decays is measured using pp collision data at √s=7 TeV, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector. The decay-time distribution is characterized by the decay widths ΓL and ΓH of the light and heavy mass eigenstates of the B0s−B̄0s system and by a CP-violating phase ϕs. In a sample of 27 617 B0s→J/ψK+K− decays, where the dominant contribution comes from B0s→J/ψϕ decays, these parameters are measured to be ϕs=0.07±0.09(stat)±0.01(syst) rad, Γs≡(ΓL+ΓH)/2=0.663±0.005(stat)±0.006(syst) ps−1, and ΔΓs≡ΓL−ΓH=0.100±0.016(stat)±0.003(syst) ps−1, corresponding to the single most precise determination of ϕs, ΔΓs, and Γs. The result of performing a combined analysis with B0s→J/ψπ+π− decays gives ϕs=0.01±0.07(stat)±0.01(syst) rad, Γs=0.661±0.004(stat)±0.006(syst) ps−1, and ΔΓs=0.106±0.011(stat)±0.007(syst) ps−1. All measurements are in agreement with the Standard Model predictions. | ||
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