PT Journal
AU Dias, JM
   Debastiani, VR
   Roca, L
   Sakai, S
   Oset, E
TI Binding of the BD(D)over-bar and BDD systems
SO Physical Review D
JI Phys. Rev. D
PY 2017
BP 094007
EP 6pp
VL 96
IS 9
DI 10.1103/PhysRevD.96.094007
LA English
AB We study theoretically the BD (D) over bar and BDD systems to see if they allow for possible bound or resonant states. The three-body interaction is evaluated implementing the fixed center approximation to the Faddeev equations which considers the interaction of a D or (D) over bar particle with the components of a BD cluster, previously proved to form a bound state. We find an I(J(P)) = 1/2(0(-)) bound state for the BD (D) over bar system at an energy around 8925-8985 MeV within uncertainties, which would correspond to a bottom hidden-charm meson. In contrast, for the BDD system, which would be bottom double-charm and hence manifestly exotic, we have found hints of a bound state in the energy region 8935-8985 MeV, but the results are not stable under the uncertainties of the model, and we cannot assure, nor rule out, the possibility of a BDD three-body state.
ER