$χ_{c1}$ and $χ_{c2}$ production at $e^+e^-$ colliders

Direct, resonant production of the charmonium states $χ_{c1}$ and $χ_{c2}$ in electron-positron annihilation is investigated. Depending on details of the model, a sizeable variation of the prediction for the production cross section is anticipated. It is demonstrated that resonant production could be observed under favorable circumstances.

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