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The STAR experiment has measured $p\Lambda$, $\bar{p}\bar{\Lambda}$,$\bar{p}\Lambda$, and $p\bar{\Lambda}$ femtoscopic correlation functions incentral Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV. The system size extractedfor $p\Lambda$ and $\bar{p}\bar{\Lambda}$ is consistent with model expectationsand results for other pair types, while for $p\bar{\Lambda}$ and$\bar{p}\Lambda$ it is not consistent with the other two and significantlylower. In addition an attempt was made to extract the unknown parameters of thestrong interaction potential for this baryon-antibaryon ($B\bar{B}$) pair. Inthis work we reanalyze the STAR data, taking into account residual femtoscopiccorrelations from heavier $B\bar{B}$ pairs. We obtain new estimates for thesystem size, consistent with the results for $p\Lambda$ and$\bar{p}\bar{\Lambda}$ pairs and with model expectations. We give new estimatesfor the strong interaction potential parameters for $p\bar{\Lambda}$ and showthat similar constraints can be given for parameters for other, heavier$B\bar{B}$ pairs.

Extracting baryon-antibaryon strong interaction potentials from p$\bar{\Lambda}$ femtoscopic correlation function