Compact $cs\bar{s}\bar{s}$ Tetraquarks in the Charm--Strange Sector: Mass Spectra, Rearrangement Decays and Regge Trajectories with $D_s$ Threshold Inputs

Chetan Lodha, Ajay Kumar Rai

This work presents a spectroscopy-focused study of the compact open-charm, multi-strange tetraquark configuration \(cs\bar{s}\bar{s}\), modeled as an axial diquark-antidiquark syst…