Measured correlation function of \XiPi pairs in the whole fit range. Statistical (bars) and systematic (boxes) uncertainties are shown separately. The pink band represents the fit with both Coulomb and strong interaction using the LL method,. The $C_\mathrm{background} (\kstar)$ multiplied by the normalization constant $N_D$ obtained within the Coulomb + strong fit is reported in gray. The inset shows a zoomed-in view of the y-axis, highlighting the \ks region of the \XRes and \XResNovanta states in greater detail.