| Popis: |
In this work, the Ωc-like molecular states are systematically investigated in a quasipotential Bethe-Salpeter equation approach. The relevant interactions Ξc(*,′)K¯(*), Ξ(*)D(*), and Ωc(*)(π/η/ρ/ω) are described by light meson exchanges with the help of the effective Lagrangians with SU(3), chiral, and heavy quark symmetries. The obtained potential kernels of considered interactions are inserted into the quasipotential Bethe-Salpeter equation, and coupled-channel calculations are performed to find possible molecular states and its couplings to the channels considered. The results suggest that an isoscalar state can be produced from the Ξc*K¯ interaction with spin parity 3/2−, which can be related to state Ωc(3120). And its isoscalar partner is predicted with a dominant decay in the Ωc*π channel. The isoscalar and isovector states with 1/2− can be produced from the Ξc′K¯ interaction with a threshold close to the mass of the Ωc(3050) and Ωc(3065). Their couplings to the ΞcK¯ channel are very weak, and the isovector one has strong coupling to Ωcπ. High-precision measurement is helpful to confirm or search such molecular states. Experimental search of states with higher masses generated from interactions Ξc(*,′)K¯* and Ξ*D(*) are also suggested by the current results. |
