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Observation of sizeable ω contribution to χc1(3872) → π+ π− J=ψ decays

Resonant structures in the dipion mass spectrum from χc1(3872)→π+π−J/ψ decays, produced via B+→K+χc1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A sizeable contribution from the isospin conservin...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Marks, Jörg (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal) Editorial
Language:English
Published: 1 July 2023
In: Physical review
Year: 2023, Volume: 108, Issue: 1, Pages: 1-12
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.L011103
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.108.L011103
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.L011103
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Author Notes:R. Aaij et al. (LHCb Collaboration*)
Description
Summary:Resonant structures in the dipion mass spectrum from χc1(3872)→π+π−J/ψ decays, produced via B+→K+χc1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. A sizeable contribution from the isospin conserving χc1(3872)→ωJ/ψ decay is established for the first time, (21.4±2.3±2.0)%, with a significance of more than 7.1σ. The amplitude of isospin violating decay, χc1(3872)→ρ0J/ψ, relative to isospin conserving decay, χc1(3872)→ωJ/ψ, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.
Item Description:Veröffentlicht: 27. Juli 2023
Im Titel ist das Plus- und Minuszeichen hochgestellt sowie der Ausdruck "c1" tiefgestellt
*LHCb Collaboration: R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, D. Gerick, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, B. Leverington, P. Li, J. Marks, D.J. Unverzagt, U. Uwer, C. Witola, A. Zhelezov (und 991 weitere Personen)
Gesehen am 22.05.2024
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.108.L011103

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