On the nature of $Ξ_c(2930)$

Abstract

The single charmed excited $Ξ_c(2930)$ state was discovered many years ago by BABAR collaboration and recently confirmed by Belle experiment. However, both of these experiments, unfortunately, could not fix the quantum numbers of this particle and its nature is under debates. In the present study, we calculate its mass and width of its dominant decay to $ Λ_c K $. To this end we consider $Ξ_c(2930)$ state once as angularly excited and then radially excited single charmed baryon in $ Ξ_c$ channel. Comparison of the obtained results with the experimental data suggests assignment of $Ξ_c(2930)$ state as the angular excitation of the ground state $Ξ_c$ baryon with quantum numbers $J^P=\frac{1}{2}^{-}$.

9 Pages, 5 Figures and 3 Tables. arXiv admin note: text overlap with arXiv:1804.02656