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Measurement of resonant and CP components in B[bar]0s→J=ψπ+π− decays

Structure of the decay ¯B0s→J/ψπ+π− is studied using data corresponding to 3 fb−1 of integrated luminosity from pp collisions produced by the LHC and collected by the LHCb detector. Five interfering π+π− states are required to describe the decay: f0(980),f0(1500),f0(1790),f2(1270), and f′2(1525). An...

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Main Authors: Aaij, Roel (Author) , Aquines Gutiérrez, Osvaldo (Author) , Bachmann, Sebastian (Author) , Bien, Alexander (Author) , Blouw, Johan (Author) , Britsch, Markward (Author) , De Cian, Michel (Author) , Di Canto, Angelo (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Färber, Christian (Author) , Fontana, Marianna (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kreplin, Katharina (Author) , Krocker, Georg Alexander (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Nikodem, Thomas (Author) , Schmelling, Michael (Author) , Seyfert, Paul (Author) , Stahl, Sascha (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Voß, Christian (Author) , Waldi, Roland (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 14 May 2014
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2014, Volume: 89, Issue: 9
ISSN:1550-2368
DOI:10.1103/PhysRevD.89.092006
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.89.092006
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.89.092006
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Author Notes:R. Aaijet al.*, (LHCb Collaboration)
Description
Summary:Structure of the decay ¯B0s→J/ψπ+π− is studied using data corresponding to 3 fb−1 of integrated luminosity from pp collisions produced by the LHC and collected by the LHCb detector. Five interfering π+π− states are required to describe the decay: f0(980),f0(1500),f0(1790),f2(1270), and f′2(1525). An alternative model including these states and a nonresonant J/ψπ+π− component also provides a good description of the data. Based on the different transversity components measured for the spin-2 intermediate states, the final state is found to be compatible with being entirely CP odd. The CP-even part is found to be <2.3% at a 95% confidence level. The f0(500) state is not observed, allowing a limit to be set on the absolute value of the mixing angle with the f0(980) of <7.7∘ at a 90% confidence level, consistent with a tetraquark interpretation of the f0(980) substructure.
Item Description:Im Titel sind die Zahl 0 und die Plus- und Minuszeichen hochgestellt
Im Titel steht der Buchstabe B mit einem Oberstrich
LHCb Collaboration: R. Aaij, O. Aquines Gutierrez, S. Bachmann, A. Bien, J. Blouw, M. Britsch, De Cian, A. Di Canto, F. Dordei, S. Esen, C. Färber, M. Fontana, E. Gersabeck, L. Grillo, S. Hansmann-Menzemer, A. Jaeger, K. Kreplin, G. Krocker, B. Leverington, J. Marks, M. Meissner, T. Nikodem, M. Schmelling, P. Seyfert, S. Stahl, J. van Tilburg, U. Uwer, M. Vesterinen, C. Voß, R. Waldi, S. Wandernoth, D. Wiedner, A. Zhelezov [und viele weitere]
Gesehen am 16.10.2020
Physical Description:Online Resource
ISSN:1550-2368
DOI:10.1103/PhysRevD.89.092006

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