Hidden-charm decays of Y(4390) in a hadronic molecular scenario

In the present work, the hidden-charm decays of Y(4390) are investigated in a D*D¯1+H.c. molecular scenario. We find in this frame the observation of the Y(4390) in the e+e-→π+π-hc process and the absence of this state in the e+e-→π+π-J/ψ process are very natural. The partial width of Y(4390)→π+π-hc could reach up to 1.26 MeV, which is large enough to be observed. The result also indicates that the partial widths of Y(4390)→ηJ/ψ and Y(4390)→ηhc are of the same order of magnitude as the one of Y(4390)→π+π-hc, which could be tested by the precise measurements at BES III and Belle II.