Resonances in heavy meson–heavy baryon coupled-channel interactions

Abstract

Abstract The interactions of $${\bar{D}}^{(*)} \Lambda _c - {\bar{D}}^{(*)}\Sigma _c^{(*)}$$ D ¯ ( ∗ ) Λ c - D ¯ ( ∗ ) Σ c ( ∗ ) are studied within the framework of a dynamical coupled-channel approach. A series of bound states and resonances with different spin and parity are dynamically generated in the hidden charm sector. Four S-wave bound states are found in the mass range of 4.3–4.5 GeV, close to the pentaquark states observed by LHCb. Two of the states have a spin parity of $$J^P= 1/2^-$$ J P = 1 / 2 - and the other two have $$J^P=3/2^-$$ J P = 3 / 2 - . In addition, several resonances with different spin and parity in higher partial waves are predicted.