The J/ψϕ decay channel of the Y(4140) Molecular State

Using the QCD sum rule approach we study the Y(4140) state assuming that it can be described by a molecular state with JPC=0++ quantum numbers. We evaluate the decay width into the channel Y→J/ψϕ and we find the value ΓY→J/ψϕ≃(0.34±0.11)MeV, which is much smaller than the total experimental width Γ≃(20±8)MeV. However, considering the experimental upper limits for the decay of the Y(4140) into di-photons, Γγγ×B[ΓY→J/ψϕ]<41eV, such a scalar molecule can be a good candidate to explain the possible exotic structure of the Y(4140) state.