Observation of B0S→D [bar] [ast] 0 [phi] and search for B0→D [bar] 0 [phi] decays
The first observation of the B0s→¯D*0ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching f...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
30 October 2018
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| In: |
Physical review
Year: 2018, Jahrgang: 98, Heft: 7 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.98.071103 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevD.98.071103 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.98.071103 |
| Verfasserangaben: | R. Aaij et al.* (LHCb Collaboration) |
| Zusammenfassung: | The first observation of the B0s→¯D*0ϕ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B0→¯D0π+π− and is found to be B(B0s→¯D*0ϕ)=(3.7±0.5±0.3±0.2)×10−5, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B0→¯D0π+π− decay. The fraction of longitudinal polarization in this decay is measured to be fL=(73±15±4)%. The most precise determination of the branching fraction for the B0s→¯D0ϕ decay is also obtained, B(B0s→¯D0ϕ)=(3.0±0.3±0.2±0.2)×10−5. An upper limit, B(B0→¯D0ϕ)<2.0 (2.3)×10−6 at 90% (95%) confidence level is set. A constraint on the ω−ϕ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level. |
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| Beschreibung: | The LHCb Collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, F. Dordei, C. Färber, D. Gerick, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, P. Krokovny, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, A. Piucci, M. Schiller, P. Seyfert, N. Skidmore, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, R. Waldi, A. Zhelezov [und weitere] Im Titel werden "phi" und "ast" als griechische Buchstaben dargestellt Im Titel sind "0" und "b" untereinander geschrieben: "0" hochgestellt, "b" tiefgestellt Im Titel werden die Zeichen "*" und "0" hochgestellt Gesehen am 10.04.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.98.071103 |