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`` $Λ- Σ$ conversion in $^4_Λ$He and $^4_Λ$H based on four-body calculation

E. Hiyama·M. Kamimura·T. Motoba·T. Yamada·Y. Yamamoto
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Abstract

Precise four-body calculations for $^4_Λ$He and $^4_Λ$H have been performed in the framework of the variational method with Jacobian-coordinate Gaussian-basis functions. All the rearrangement channels of both $NNN Λ$ and $NNN Σ$ are explicitly taken into account for the first time with the use of realistic $NN$ and $YN$ interactions. The role of $Λ$-$Σ$ conversion and the amount of the virtual $Σ$-component in $^4_Λ$He and $^4_Λ$H are discussed.

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E. Hiyama, M. Kamimura, T. Motoba, T. Yamada, Y. Yamamoto. 2001-06-29. `` $Λ- Σ$ conversion in $^4_Λ$He and $^4_Λ$H based on four-body calculation. https://doi.org/10.1103/physrevc.65.011301

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