In this work, we perform a systematic study of possible molecular states
composed of two charmed baryons including hidden-charm systems
ΞcβΞΛcβ, Ξ£c(β)βΞ£Λc(β)β, and
ΞcβΞ£Λc(β)β, and corresponding double-charm systems
ΞcβΞcβ, Ξ£c(β)βΞ£c(β)β, and
ΞcβΞ£c(β)β. With the help of the heavy quark chiral effective
Lagrangians, the interactions are described with Ο, Ο, Ξ·,
Ο, Ο, and Ο exchanges. The potential kernels are
constructed, and inserted into the quasipotential Bethe-Salpeter equation. The
bound states from the interactions considered is studied by searching for the
poles of the scattering amplitude. The results suggest that strong attractions
exist in both hidden-charm and double-charm systems considered in the current
work, and bound states can be produced in most of the systems. More experiment
studies about these molecular states are suggested though the nucleon-nucleon
collison at LHC and nucleon-antinucleon collison at PΛANDA.Comment: 7 pages, 5 figure