QCD Inequalities and the Ds(2320)
Abstract
We discuss the new state DsJ(2317) discovered by BaBar and demonstrate using QCD inequalities that if indeed the f0(980) and the new DsJ(2317) (0+) are primarilly made of four quarks that a new I=0 `` DD bound state'' at a mass smaller than 3660 MeV must exist. Observation of such a state will constitute definitive evidence for four-quark states.
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