Year: 2024
Type: preprint
Abstract: Stimulated by the observation of a new structure, named $Λ_{c}(2910)$, in the $Σ_{c}(2455)^{0,++}π^{+,-}$ decay channel from B meson decay process by the Belle Collaboration, and the similarity of the $Λ_{c}(2910)/Λ_{c}(2940)$ and $P_{c}$ states, we investigate the decay behavior of the $Λ_{c}(2910)$ and $Λ_{c}(2940)$ in the $N D^{*}$ molecular frame with the possible $J^{P}$ quantum numbers to be $1/2^{-}$ and $3/2^{-}$. We employ an effective Lagrangian approach to evaluate the partial widths of $ND$, $Σ_{c}π$ and $Σ_{c}^{*}π$ channels. The estimations in the present work indicate that the $J^P$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$ are preferred to be $1/2^{-}$ and $3/2^{-}$, respectively. From the present estimations, we also find the branching ratio of $Λ_c(3/2) \to Σ_c^\ast π$ is much larger than that of $Λ_c(1/2) \to Σ_c^\ast π$, thus $Σ_{c}^{*}π$ could be a good channel to distinguish the $J^{P}$ quantum numbers of $Λ_{c}(2910)$ and $Λ_{c}(2940)$. Therefore, we suggest to searching for the structure in $Σ_{c}^{*}π$ invariant mass distribution in Belle $\amalg$.
Source: arXiv (Cornell University)
Authors: Yue, Zi-Li, Guo, Quan-Yun, Chen, Dian-Yong
Institutions: Southeast University, Lanzhou University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1513945615, G4179400910
OpenAlex ID: W4391941789