First, we need to identify the particles involved in the decay process. The given decay process is:
$$
\psi^{\prime}(3.7) \rightarrow \psi(3.1)+\text { hadrons }
$$
Here, $\psi^{\prime}(3.7)$ is a charmonium state with a mass of 3.7 GeV, and $\psi(3.1)$ is another
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