Speaker
Description
We study the productions of $\Lambda$-hypernuclei $^3_{\Lambda}$H, $^4_{\Lambda}$H, $^4_{\Lambda}$He and $\Omega$-hypernuclei $H(p\Omega^-)$, $H(n\Omega^-)$, $H(pn\Omega^-)$ in the coalescence mechanism in relativistic heavy-ion collisions. Considering the abundance and great importance of baryons and light (hyper-)nuclei on the collision dynamics, we include not only nucleon$+\Lambda$ coalescence but also nucleus+nucleon($\Lambda$) coalescence. We present contributions from different coalescence channels for $^3_{\Lambda}$H, $^4_{\Lambda}$H and $^4_{\Lambda}$He in their productions. We predict the production asymmetry between $^4_{\Lambda}$H and $^4_{\Lambda}$He, characterized by yield ratios $^4_{\Lambda}\text{He}/^4_{\Lambda}\text{H}$ and $(^4_{\Lambda}\text{H}-^4_{\Lambda}\text{He})/(^4_{\Lambda}\text{H}+^4_{\Lambda}\text{He})$, which can shed light on the existence constraints of the possible neutron-$\Lambda$ bound states $^2_{\Lambda}n~(n\Lambda)$ and $^3_{\Lambda}n~(nn\Lambda)$.
