The pairing effects on the entanglement properties of chiral doublet bands in the particle-hole $\pi {\left(1h_{11/2}\right)}^1\otimes \nu {\left(1h_{11/2}\right)}^{-1}$ configuration are investigated within the particle rotor model. The tripartite system is partitioned into three subsystems–proton, neutron, and collective rotor–each described by its reduced density matrix. Entanglement is quantified using the side lengths and geometric area of the concurrence triangle. The results reveal that the entanglement in the doublet bands increases with the neutron pairing gap ${\mathrm{\Delta }}_n$ and exhibits a pronounced dependence on the triaxial deformation parameter $\gamma$. These properties and behaviors are shown to originate directly from the underlying angular momentum geometry of the system and its response to pairing-induced reorientation.

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• High spin states
• Nuclear forces
• Nuclear structure & decays
• 90 ≤ A ≤ 149
• Collective models