Doubly charmed molecular pentaquarks

Abstract

We perform a systematic exploration of the possible doubly charmed molecular pentaquarks composed of $\Sigma_c^{(*)}D^{(*)}$ with the one-boson-exchange potential model. After taking into account the $S-D$ wave mixing and the coupled channel effects, we predict several possible doubly charmed molecular pentaquarks, which include the $\Sigma_cD$ with $I(J^P) = 1/2(1/2^-)$, $\Sigma_c^*D$ with $1/2(3/2^-)$, and $\Sigma_cD^*$ with $1/2(1/2^-)$, $1/2(3/2^-)$. The $\Sigma_cD$ state with $3/2(1/2^-)$ and $\Sigma_cD^*$ state with $3/2(1/2^-)$ may also be suggested as candidates of doubly charmed molecular pentaquarks. The $\Sigma_cD$ and $\Sigma_c^*D$ states can be searched for by analyzing the $\Lambda_cD\pi$ invariant mass spectrum of the bottom baryon and $B$ meson decays. The $\Sigma_cD^*$ states can be searched for in the invariant mass spectrum of $\Lambda_cD^*\pi$, $\Lambda_cD\pi\pi$ and $\Lambda_cD\pi\gamma$. Since the width of $\Sigma_c^*$ is much larger than that of $D^*$, $\Sigma_c^*D\rightarrow \Lambda_cD\pi$ will be the dominant decay mode. We sincerely hope these candidates for the doubly charmed molecular pentaqurks will be searched by LHCb or BelleII collaboration in the near future.