A direct probe of $\Lambda$ potential in nuclear medium

Abstract

Using the Liège intranuclear-cascade model together with the ablation model ABLA, an investigation is conducted into the effects of $\Lambda$ potential in $\Lambda$-nucleus and $\Lambda$-hypernucleus-nucleus collisions across various beam energies. The findings show that the angle and transverse-momentum distributions of scattered $\Lambda$ hyperon, the scattering cross section of the $\Lambda$ hyperon in $\Lambda$-nucleus collisions as well as the rapidity distribution of $\Lambda$ hyperon in $\Lambda$-hypernucleus-nucleus collisions are significantly influenced by the strength of the $\Lambda$ potential in these scattering reactions across various beam energies. These demonstrations, unhindered by the uncertainties of $\Lambda$ and hypernuclei productions in nuclear medium, allow for a direct investigation of the $\Lambda$ potential, especially its momentum dependence. The criticality of probing the $\Lambda$ potential is closely associated with the resolution of the "hyperon puzzle" in neutron stars.

arXiv comment5 pages, 4 figures. Feasibility literature with experiments added. PLB in production

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Cited by in corpus (4)

• Probing $\Lambda$ potential via its $v_2$ flow in hypernuclei-induced reaction
• Probing small neutron skin variations in isotope pairs by hyperon-antihyperon production in antiproton--nucleus interactions
• Light and heavy $\Lambda$ hyperclusters in nuclear matter with relativistic-mean-field models
• Probing $\Lambda$ potential at high and low densities via \(^3_Λ\)H production in C+C reactions