Possible large branching fraction of ψ″ decays to charmless final states

摘要: The branching fraction of the ψ" decays into charmless final states is estimated in the S- and D-wave charmonia mixing scheme. With the information of the hadronic decays of J/ψ and ψ', it is found that a large branching fraction, up to 13% of the total ψ" decays, may go to charmless final states. The experimental search for these decays is also discussed.