First observation of the decay B0s → φK[bar]*0
Abstract:The first observation of the decayB0s→φK∗0 is reported.Theanalysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb−1of pp collisions at√s= 7 TeV, collected with the LHCb detector. A yield of 30±6B0s→(K+K−)(K−π+) decays is found in t...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
November 12, 2013
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| In: |
Journal of high energy physics
Year: 2013, Heft: 11, Pages: 1-21 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP11(2013)092 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP11(2013)092 |
| Verfasserangaben: | The LHCb collaboration |
| Zusammenfassung: | Abstract:The first observation of the decayB0s→φK∗0 is reported.Theanalysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb−1of pp collisions at√s= 7 TeV, collected with the LHCb detector. A yield of 30±6B0s→(K+K−)(K−π+) decays is found in the mass win-dows 1012.5< M(K+K−)<1026.5 MeV/c2 and 746< M(K−π+)<1046 MeV/c2. The signal yield is found to be dominated by B0s→φK∗0 decays, and the corresponding branching fraction is measured to be B(B0s→φK∗0)= (1.10±0.24 (stat)±0.14 (syst)±0.08 (fd/fs))×10−6, where the uncertainties arestatistical, systematic and from the ratio of fragmentation fractions fd/fs which accounts for the different production rate of B0 and B0s mesons. The significance of B0s→φK∗0 signal is 6.1 standard deviations. The fraction of longitudinal polarization in B0s→φK∗0 decays is found to be f0= 0.51±0.15 (stat)±0.07 (syst). |
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| Beschreibung: | Im Titel steht der Buchstabe K mit einem Oberstrich Im Titel ist "0" hoch- und "s" tiefgestellt 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 592 Gesehen am 23.04.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP11(2013)092 |