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arXiv · hep-ph/9912393

Final-state interaction phase difference in $J/ψ\toρη$ and $ωη$ decays

N. N. Achasov·V. V. Gubin
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Abstract

It is shown that the study of the $ω-ρ^0$ interference pattern in the $J/ψ\to (ρ^0+ω)η\toπ^+π^-η$ decay provides the evidence for the large (nearly $90^\circ$) relative phase between the one-photon and the three-gluon decay amplitudes.

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N. N. Achasov, V. V. Gubin. 2000-07-11. Final-state interaction phase difference in $J/ψ\toρη$ and $ωη$ decays. https://doi.org/10.1103/physrevd.61.117504

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