Observation of B0→D̄0K+K− and evidence for B0s→D̄0K+K−
The first observation of the decay B0→¯¯¯D0K+K− is reported from an analysis of 0.62 fb−1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0→¯¯¯D0π+π− to be B(B0→¯¯¯D0K+K−)B(B0→¯¯¯D0π+π−)=0.056±0.011±0.007,...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
26 September 2012
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| In: |
Physical review letters
Year: 2012, Jahrgang: 109, Heft: 13 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.109.131801 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.109.131801 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.109.131801 |
| Verfasserangaben: | R. Aaij et al.* (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Observation of B0→D̄0K+K− and evidence for B0s→D̄0K+K− |c R. Aaij et al.* (LHCb Collaboration) |
| 246 | 3 | 3 | |a Observation of B 0 → D̄ 0 K + K − and evidence for B 0 s→D̄ 0 K + K − |
| 264 | 1 | |c 26 September 2012 | |
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| 500 | |a Im Titel sind "0" und "s" untereinander geschrieben: "s" ist tiefgestellt, "0" hochgestellt | ||
| 500 | |a Im Titel sind die Zeichen "null", "plus" und "minus" hochgestellt | ||
| 500 | |a The LHCb Collaboration: R. Aaij, A. Adametz, S. Bachmann, A. Bien, J. Blouw, M. Britsch,F. Dordei, F. Eisele, C. Fäber, E. Gersabeck, S. Hansmann-Menzemer, T. Hartmann, A. Jaeger, K. Kreplin, G. Krocker, P. Krokovny, C. Langenbruch, C. Linn, J. Marks, M. Meissner, T. Nikodem, P. Seyfert, S. Stahl, J. v. Tilburg, U. Uwer, S. Wandernoth, D. Wiedner, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 24.10.2018 | ||
| 520 | |a The first observation of the decay B0→¯¯¯D0K+K− is reported from an analysis of 0.62 fb−1 of pp collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the topologically similar decay B0→¯¯¯D0π+π− to be B(B0→¯¯¯D0K+K−)B(B0→¯¯¯D0π+π−)=0.056±0.011±0.007,where the first uncertainty is statistical and the second is systematic. The significance of the signal is 5.8σ. Evidence, with 3.8σ significance, for B0s→¯¯¯D0K+K− decays is also presented. The relative branching fraction is measured to be B(B0s→¯¯¯D0K+K−)B(B0→¯¯¯D0K+K−)=0.90±0.27±0.20. These channels are of interest to study the mechanisms behind hadronic B decays, and open new possibilities for CP violation analyses with larger data sets. | ||
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