Bound state formation in the DDK system

Abstract

We study the DDK system in a coupled channel approach, by including DDsη and DDsπ, and find that the dynamics involved in the system forms a bound state with isospin 1/2 and mass 4140 MeV when one of the DK pair is resonating in isospin 0, forming the Ds0∗(2317). The state can be interpreted as a DDs0∗(2317) molecule like state with exotic quantum numbers: doubly charged, doubly charmed, and with single strangeness.