Exotic doubly charmed D*s0 (2317)D and D*s1 (2460)D* molecules

The D*(s0) (2317)D and D*(s1) (2460)D* heavy meson systems can exchange a kaon that is emitted in the S-wave due to the opposite intrinsic parity of the D*(s0) (D*(s1)) and D(D*) mesons. As a consequence of the mass difference of the D*(s0) (D*(s1)) and D(D*) mesons, the range of the kaon exchange potential will be significantly longer than expected, corresponding to an effective mass of about 200 MeV. The potential will be very strong: the strength of the interaction is proportional to (m(Ds0)- m(D))(2)/f(pi)(2) and (m(Ds1)- m(D)*)(2)/f(pi)(2).This combination of range and strength almost guarantees the existence of D*(s0) (2317)D and D*(s1) (2460)D* bound states with J(P) = 0(-) and J(P) = 0(-), 2(-), respectively. Concrete calculations indicate a binding energy of 5-15 MeV independently of J(P). The D*(s0) (2317)D and D*(s1) (2460)D* molecules have manifestly exotic flavor quantum numbers: C = 2, S = 1, and I = 1/2. We expect the existence of bottom counterparts composed of the BBs0 and B*B*(s1) mesons, which will be more bound and have a richer spectrum that might include a shallow P-wave state and an excited S-wave state.