Possible Σ_c^* Σ̅ molecular states

We investigate the possibility of deuteron-like Σ_c^*Σ̅ bound states within the one-boson-exchange model and systematically analyze the effects of the contact-range δ^3(r⃗ ) potential, the tensor term from the vector-meson exchange, and nonlocal potentials due to the dependence on the sum of the initial and final state center-of-mass momenta. We find that the pion-exchange potential including the δ^3(r⃗ ) term and the tensor term of the ρ-exchange potential exhibit comparable magnitudes but opposite signs for any S-wave baryon-antibaryon systems. For the Σ_c^*Σ̅ system, it is most likely to form bound states with mass around 3.7 GeV in the I(J^P)=0(2^-) and 1(2^-) channels.