Hadronic decay widths of the newly observed charmed strange baryons, Ωc(3000) 0 , Ωc(3050) 0 , Ωc(3066) 0 , Ωc(3090) 0 and Ωc(3119) 0 have been calculated in a 3 P0 model. Our results indicate that Ωc(3066) 0 and Ωc(3090) 0 can be interpreted as the 1P −wave Ωc2( 3

The hadronic decay widths and some ratios of branching fractions of the newly observed charmed strange baryons, Ξc(3055) 0 , Ξc(3055) + and Ξc(3080) + are calculated in a 3 P0 model. In the calculation, they are considered as 34 kinds of D − wave charmed strange baryons. Among these assignments, Ξc(3055) + is very possibly a J P = 5 2 + ). In these assignments, Ξc(3055) 0 has the total decay width Γ = 10.3 MeV and Γ = 7.1 MeV. The predicted ratios Γ(Ξc(3055) 0 → ΛD 0 )/Γ(Ξc(3055) 0 → Σ + c K − ) = 7.47 or 7.56. The results agree well with recent experimental data from Belle. Ξc(3080) + seems impossible to be identified with a D-wave charmed strange baryon.

Strong decays of Ξc baryons with radial or orbital λ-and ρ-modes excitations with positive parity have been studied in a 3 P0 model. As candidates of these kinds of excited charmed strange baryons, possible configurations and J P quantum numbers of Ξc(2930), Ξc(2980), Ξc(3055), Ξc(3080) and Ξc(3123) have been assigned based on experimental data. There are 40 kinds of configurations to describe the first radial or orbital excited Ξc in λ-and ρ-mode excitations with positive parity. In these assignments, Ξc(2930) may be a 2S-wave excited Ξc1( + ), and seems not a D-wave excitation of Ξc. For the poor experimental information of Ξc(3123), it is impossible to identify this state at present. It is found that the channel ΛD vanishes in the strong decay of P -wave, D-wave and 2S-wave excited Ξc without ρ-mode excitation between the two light quarks (nρ = Lρ = 0). In different configurations, some branching fraction ratios related to the internal structure of the 2S-wave and D-wave of Ξc are different. These ratios have been computed and can be employed to distinguish different configurations in forthcoming experiments.

Many excited charmed strange baryons such as Ξc(2790), Ξc(2815), Ξc(2930), Ξc(2980), Ξc(3055), Ξc(3080) and Ξc(3123) have been observed. In order to understand their internal structure and to determine their spin-parities, the strong decay properties of these baryons as possible P -wave excited Ξc candidates have been systematically studied in a 3 P0 model. The configurations and

We measured the ratios of electroproduction cross-sections from a proton target for three exclusive meson-baryon final states: ΛK + , pπ 0 , and nπ + , with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization we extract qq creation probabilities for the first time in exclusive two-body production, in which only a single qq pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to non-strange pairs, similar to that seen in high-energy production.