Σ_c^(*)N dibaryon resonances in the phenomenological potential model

Two-body J^π = 0⁺,1⁺, and 2⁺ resonance states of the Y_c (=Λ_c, Σ_c, or Σ^*_c) and N systems are analyzed by the use of the complex scaling method. We employ the Y_cN phenomenological potentials, which are composed of the long-range meson-exchange force and  the short-range quark exchange force. We find four Feshbach-type resonance states slightly below the Σ_cN, or Σ^*_cN threshold. It is found that the four resonances form two pairs of the heavy-quark doublets in agreement with the heavy quark spin symmetry.