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Phases and Amplitudes in Inclusive $Ψ$ and $Ψ'$ Decays

J. -M. Gerard·J. Weyers
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Abstract

In inclusive decays of the $Ψ$ (3097), electromagnetic and gluonic annihilation amplitudes add incoherently, namely they are 90$^\circ$ out of phase. We argue that this incoherence must persist in each exclusive decay channel. For inclusive $Ψ'$ (3686) decays, we suggest the absence of a significant direct annihilation amplitude into three gluons and propose a new amplitude via QCD anomalies and the $h_c$ (3526) off shell. Phenomenological implications for exclusive decay channels are pointed out.

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J. -M. Gerard, J. Weyers. 1999-06-14. Phases and Amplitudes in Inclusive $Ψ$ and $Ψ'$ Decays. https://doi.org/10.1016/s0370-2693(99)00849-7

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