Source radius $r_{\textrm{core}}$ as a function of $\langle\mt\rangle$ for the assumption of a Gaussian source with added resonances. The blue crosses result from fitting the \pP correlation function with the strong Argonne $v_{18}$~ potential. The green squared crosses (red diagonal crosses) result from fitting the \pL correlation functions with the strong $\chi$EFT LO~ (NLO~) potential. Statistical (lines) and systematic (boxes) uncertainties are shown separately. The results shown in this figure were updated with respect to the initial publication~ according to App.~\ref{sec:ap}~.