DsJ+(2317)→Ds+π0 decay width

We use the QCD sum rules to analize the hadronic decay DsJ+(2317)→Ds+π0, in the hypothesis that the DsJ+(2317) can be identified as a four-quark state. We use a diquark-antidiquark current and work to the order of ms in full QCD, without relying on 1/mc expansion. We find that the partial decay width of the hadronic isospin violating mode is proportional to the isovector quark condensate, 〈0|d¯d−u¯u|0〉. The estimated partial decay width is of the order of 6 keV.