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Observation of ¯B0(s)→J/ψ f1(1285) decays and measurement of the f1(1285) mixing angle

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Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb detector. ¯B0(s)→J/ψf1(1285) decays are seen for the first time, and the branching fractions are...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Britsch, Markward (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Di Canto, Angelo (Author) , Dordei, Francesca (Author) , Färber, Christian (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 4 March 2014
In: Physical review letters
Year: 2014, Volume: 112
ISSN:1079-7114
DOI:10.1103/PhysRevLett.112.091802
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.112.091802
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.112.091802
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb detector. ¯B0(s)→J/ψf1(1285) decays are seen for the first time, and the branching fractions are measured. Using these rates, the f1(1285) mixing angle between strange and nonstrange components of its wave function in the q¯q structure model is determined to be ±(24.0+3.1+0.6−2.6−0.8)°. Implications on the possible tetraquark nature of the f1(1285) are discussed.
Item Description:Im Titel wird psi als griechischer Buchstabe dargestellt
Im Titel sind die Zeichen - und 0 über das B hochgestellt
Im Titel sind 1 und s tiefgestellt
Gesehen am 10.08.2020
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.112.091802

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