Nature of charmed strange baryons Ξ c ( 3055 ) and Ξ c ( 3080 )

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 P03 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 JP=52+ Ξ^c3′(52+) or Ξˇc32(52+). In these two assignments, Ξc(3055)+ has the total decay width Γ=10.1 MeV and Γ=7.6 MeV, respectively. The predicted ratios Γ(Ξc(3055)+→ΛD+)/Γ(Ξc(3055)+→Σc++K−)=3.39. Ξc(3055)+ is also very possibly a JP=72+ Ξ^c3′(72+) or Ξˇc32(72+). In these two assignments, Ξc(3055)+ has the total decay width Γ=9.7 MeV and Γ=6.3 MeV, respectively. The predicted ratios Γ(Ξc(3055)+→ΛD+)/Γ(Ξc(3055)+→Σc++K−)=5.91 or 6.04. As an isospin partner of Ξc(3055)+, Ξc(3055)0 is also very possibly a JP=52+ Ξ^c3′(52+) or Ξˇc32(52+). In these assignments, Ξc(3055)0 has the total decay width Γ=10.9 MeV and Γ=7.0 MeV. The predicted ratios Γ(Ξc(3055)0→ΛD0)/Γ(Ξc(3055)0→Σc+K−)=4.24 or 4.20. Ξc(3055)0 is also very possibly a JP=72+ Ξ^c3′(72+) or Ξˇc32(72+). 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→ΛD0)/Γ(Ξc(3055)0→Σc+K−)=7.47 or 7.56. The results agree well with recent experimental data from Belle. Ξc(3080)+ seems impossible to identify with a D-wave charmed strange baryon.