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arXiv · nucl-th/9511005

$A$--Dependence of $ΛΛ$ Bond Energies in Double---$Λ$ Hypernuclei

D. E. Lanskoy·Yu. A. Lurie·A. M. Shirokov
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Abstract

The $A$-dependence of the bond energy $ΔB_{ΛΛ}$ of the ${ΛΛ}$ hypernuclear ground states is calculated in a three-body ${Λ+ Λ+ {^{A}Z}}$ model and in the Skyrme-Hartree-Fock approach. Various ${ΛΛ}$ and $Λ$-nucleus or ${ΛN}$ potentials are used and the sensitivity of $ΔB_{ΛΛ}$ to the interactions is discussed. It is shown that in medium and heavy ${ΛΛ}$ hypernuclei, $ΔB_{ΛΛ}$ is a linear function of $r_Λ^{-3}$, where $r_Λ$ is rms radius of the hyperon orbital. It looks unlikely that it will be possible to extract ${ΛΛ}$ interaction from the double-$Λ$ hypernuclear energies only, the additional information about the $Λ$-core interaction, in particular, on $r_Λ$ is needed.

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D. E. Lanskoy, Yu. A. Lurie, A. M. Shirokov. 1995-11-04. $A$--Dependence of $ΛΛ$ Bond Energies in Double---$Λ$ Hypernuclei. https://doi.org/10.1007/s002180050219

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