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Calculation of the width of the decay ψ’→ψη
Phys. Rev. D 32, 666 – Published 1 August, 1985
DOI: https://doi.org/10.1103/PhysRevD.32.666
Abstract
The width of the transition ψ’→ψη in the charmonium system is calculated in a potential-model approach. A two-stage process is assumed in which the intermediate states are charmed mesons which in turn couple to ψη via a quark-exchange process. A width of 1.6 keV is obtained.
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