Possible large branching fraction of psi(3770) decays to charmless final   states
  The branching fraction of the psi(3770) 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/psi and psi(3686), it is found that a large branching fraction, up to 13% of the total psi(3770) decays may go to charmless final states. The experimental search for these decays is also discussed. 
P.Wang, C.Z.Yuan and X.H.Mo