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The decay eta_c^prime -> eta_c pi pi

M. B. Voloshin
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Abstract

It is pointed out that the decay of the recently observed charmonium eta_c^prime resonance, eta_c^prime -> eta_c pi pi is simply related to the well studied decay psi^prime -> J/psi pi pi and can thus be used for absolute normalization of other decay modes of the eta_c^prime. The total rate of the discussed decay should be approximately three to four times the corresponding rate for the psi^prime$ resonance making the channel with charged pions the most probable exclusive decay mode of the eta_c^prime with the branching ratio in the range 5-10 %.

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M. B. Voloshin. 2002-06-25. The decay eta_c^prime -> eta_c pi pi. https://doi.org/10.1142/s0217732302007892

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