Narrow Results

We performed calculations of nuclear systems composed solely of Λ^* hyperons, aiming at exploring the possibility of existence of absolutely stable Λ^* matter. We considered Λ^* interaction strengths compatible with the Λ^*Λ^* binding energy B_Λ^*Λ^* given by the $\overline{K}$N interaction model by Yamazaki and Akaishi. We found that the binding energy per Λ^* saturates at values well below 100 MeV for mass number A ≥ 120. The Λ^* matter is thus highly unstable against strong interaction decay.