Study of $$qqq{\bar{q}}Q$$ pentaquark system in the chiral quark model

With the discovery of some hidden-charm pentaquark resonances by LHCb Collaboration, investigations states containing heavy quarks have aroused interest theorists. We study herein $qqq\bar{q}Q$ ($q = u$ or $d$, $Q=c$ $b$) system, in framework chiral quark model. In consequence, charmed and bottomed pentaquarks are considered to exist five-body dynamical calculations. charm sector, $\Sigma_c\pi(IJ^P=0\frac{1}{2}^-)$ $\Sigma_c^*\pi(IJ^P=0\frac{3}{2}^-)$ possible candidates $\Lambda_c(2595)$ $\Lambda_c(2625)$, respectively. Besides, two high-spin states, $\Sigma_c^*\rho(IJ^P=0\frac{5}{2}^-)$ $\Delta D^*(IJ^P=1\frac{5}{2}^-)$, also found energy region $3.2 \sim 3.3$ GeV. bottom $\Sigma_b\pi(IJ^P=0\frac{1}{2}^-)$, $\Sigma_b^*\pi(IJ^P=0\frac{3}{2}^-)$ could be $\Lambda_b(5912)$ $\Lambda_b(5920)$, And $\Sigma_b^*\rho(IJ^P=0\frac{5}{2}^-)$ B^*(IJ^P=1\frac{5}{2}^-)$ $6.5 6.6$ $\Sigma_c^{(*)}\pi$ $\Sigma_b^{(*)}\pi$ expected as compact while $\Sigma_c^*\rho$, $\Sigma_b^*\rho$, D^*$ B^*$ molecular states.