A Primary Study of Heavy Baryons Λ_Q, Σ_Q, Ξ_Q and Ω_Q

We perform a preliminary study of the 1/2⁺ and 3/2⁺ ground−state baryons containing a heavy quark in the framework of the chiral SU(3) quark model. By using the calculus of variations, masses of Λ_Q, Σ_Q, Ξ_Q, Ω_Q, Σ_Q^*, Ξ_Q^* and Ω_Q^*, where Q means c or b quark, are calculated. By taking reasonable model parameters, the numerical results of established heavy baryons are generally in agreement with the experimental data available, except that those of Ξ_Q are somewhat heavier. For Ω_b with undetermined experimental mass and unobserved Ξ_b^*, Ω_b^*, reasonable theoretical predictions are obtained. Interactions inside baryons are also discussed.