Understanding DsJ(2317)

We analyze the hadronic and radiative decay modes of the recently observed DsJ(2317) meson, in the hypothesis that it can be identified with the scalar sℓP=12+ state of cs̄ spectrum (Ds0). The method is based on heavy quark symmetries and vector meson dominance ansatz. We find that the hadronic isospin violating mode Ds0→Dsπ0 is enhanced with respect to the radiative mode Ds0→Ds∗γ. The estimated width of the meson is Γ(Ds0)≃7 keV.