Search for psi(2S) -> gamma etac(2S) via fully reconstructed etac(2S) decays
Abstract
We report a search for the decay psi(2S) -> gamma etac(2S) in a sample of 25.9 million psi(2S) events collected with the CLEO-c detector. No signals are observed in any of the 11 exclusive etac(2S) decay modes studied, or in their sum. Product branching fraction upper limits are determined as a function of Gamma[etac(2S)] for the 11 individual modes.
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