Possible molecular states from interactions of charmed baryons

In this work, we perform a systematic study of possible molecular states composed of two charmed baryons including hidden-charm systems Lambda(c)(Lambda) over bar (c), Sigma((*))(c) (Sigma) over bar ((*))(c), and Lambda(c)(Sigma) over bar ((*))(c), and corresponding double-charm systems Lambda(c)Lambda(c), Sigma((*))(c)Sigma((*))(c), and Lambda(c)Sigma((*))(c). With the help of the heavy quark chiral effective Lagrangians, the interactions are described with pi, rho,eta, omega, phi, and sigma-exchanges. The potential kernels are constructed, and inserted into the quasipotential Bethe-Salpeter equation. The bound states from the interactions considered is studied by searching for the poles of the scattering amplitude. The results suggest that strong attractions exist in both hidden-charm and double-charm systems considered in the current work, and bound states can be produced in most of the systems. More experimental studies about these molecular states are suggested though the nucleon-nucleon collision at LHC and nucleon-antinucleon collision at (P) over bar ANDA.

Automated summary

This study investigates molecular states composed of two charmed baryons using interactions between heavy quarks. The results suggest that both hidden-charm and double-charm systems exhibit strong attractions and can form bound states.