The decay eta_c^prime -> eta_c pi pi

Details The decay eta_c^prime -> eta_c pi pi The decay eta_c^prime -> eta_c pi pi

2002-06-24

arxiv.org/abs/hep-ph/0206240v2

Mod.Phys.Lett. A17 (2002) 1533-1538

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, references added

Scientific paper

10.1142/S0217732302007892

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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