The ${}_{\Lambda}^{3}\mathrm{H}/{}^3\mathrm{He}$ yield ratio together with theoretical predictions in different centrality intervals as a function of $p_{\rm T}$. The vertical lines and boxes represent the statistical and systematic uncertainties, respectively. The pink solid lines are calculated as the ratios of the Blast-Wave fit functions for ${}^3\mathrm{He}$ and ${}_{\Lambda}^{3}\mathrm{H}$. The other three curves stand for the predictions of the coalescence model with different $B_\Lambda$ hypotheses. The coalescence prediction with world average $B_\Lambda$ is displayed with a 1$\sigma$ uncertainty band .