Amplitude analysis of Ξ⁰_c → Λ⁰ K⁻ π⁺

The Belle II experiment at the SuperKEKB asymmetric e⁺ e⁻ collider in Tsukuba, Japan, aims to conduct detailed studies in flavor physics at the ”intensity frontier”.

The Belle experiment has been integral in conducting measurements through the decay of various baryons, including Λ, Ξ_c⁰ , Ξ_c⁺ , and Ω_c but only a handful have undergone a full amplitude analysis. The amplitude analysis is critical as it allows us to dissect and interpret the underlying processes and structures in these decays. An amplitude analysis of Ξ_c⁰ decays has the potential to expose the presence of new states and measure their quantum numbers and other properties. Some recent studies have shown the existence of Ξ(1690) and Ξ(1620) in Ξ_c⁺ decays and Λ⁺_c decays. This Ξ_c⁰ → Λ⁰ K⁻ π⁺ decay mode includes potential resonant substructure including Ξ(1690)⁻ and Ξ(1820)⁻ along with some well-known resonances like K^∗(892) and Σ(1385). I will present an ongoing amplitude analysis on Ξ_c⁰ → Λ⁰ K⁻ π⁺ to measure the branching fraction and spin-parity of resonant substructures using Belle II simulations.