Final-state interaction phase difference in J/psitorhoη and ωη decays
classification
✦ hep-ph
hep-ex
keywords
decayomegaphaseamplitudescircdecaysdifferenceevidence
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It is shown that the study of the $\omega-\rho^0$ interference pattern in the $J/\psi\to (\rho^0+\omega)\eta\to\pi^+\pi^-\eta$ 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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