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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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) Editorial |
| Sprache: | Englisch |
| Veröffentlicht: |
1 July 2023
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| In: |
Physical review
Year: 2023, Jahrgang: 108, Heft: 1, Pages: 1-12 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.108.L011103 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.108.L011103 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.108.L011103 |
| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration*) |
| Zusammenfassung: | 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. |
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| Beschreibung: | 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 |
| Beschreibung: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.108.L011103 |