ETHNP (Effective Theories in Hadron and Nuclear Physics)

Correlation function for the $n \bar{D}_{s0}^*(2317)$ interaction and the issue of elastic unitarity

No programado

25m

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

Saturday morning (Session 4)

Descripción

We study the interaction between a neutron and the $\bar D_{s0}^*(2317)$ resonance and look at the amplitude below and slightly above the threshold. The $D_{s0}^*(2317)$ resonance is treated as a molecular state of the $DK$ system with isospin $I=0$. The interaction is investigated using the Fixed Center Approximation (FCA) to the Faddeev equations, where the $DK$ molecule is taken as the cluster and the neutron as the external particle. We improve the FCA to implement elastic unitarity around threshold, which is needed to obtain scattering parameters and to evaluate the $n \bar D_{s0}^*(2317)$ correlation function. This presentation is based on our work published in Phys. Rev. D 112, 094019 (2025).