论文标题

$λ^*$ Matter及其稳定性

$Λ^*$ matter and its stability

论文作者

Hrtánková, J., Schäfer, M., Mareš, J., Gal, A., Friedman, E., Barnea, N.

论文摘要

我们进行了仅由$λ^*$ Hyperons组成的核系统的计算,目的是探索存在绝对稳定的$λ^*$ Matter的可能性。我们认为$λ^*$交互强度与$λ^*λ^*$ binding Energy兼容$ b_ {λ^*λ^*} $由Yamazaki和Akaishi [1]提供的$ \ bar {k} n $相互作用模型给出。我们发现,每$λ^*$的绑定能量饱和,量低于100 meV,质量为$ a \ geq120 $。因此,$λ^*$物质在强烈的互动衰减方面非常不稳定。

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 $\bar{K}N$ interaction model by Yamazaki and Akaishi [1]. We found that the binding energy per $Λ^*$ saturates at values well below 100 MeV for mass number $A\geq120$. The $Λ^*$ matter is thus highly unstable against strong interaction decay.

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