Abstract
The present status of our understanding of S = −1 and S = −2 hypernuclei is discussed. In the S = −1 sector, including ΛN − ΣN coupling is essential to complete our modeling of the fundamental Y N interaction. For this purpose, several neutron-rich Λ hypernuclei such as nnΛ, \(^6_{\varLambda }\)H, and \(^7_{\varLambda }\)He are discussed. In the S = −2 sector, observation of \(^6_{\varLambda \varLambda }\)He, \(^{10}_{\varLambda \varLambda }\)Be, and \(^{11}_{\varLambda \varLambda }\)Be is introduced together with their theoretical modeling. The need to investigate ΛΛ − ΞN mixing is explored. Also in the S = −2 sector, how the observation of \(^{15}_{\varXi }\)C led to confirming the attractive nature of the Ξ-nuclear interaction is examined. Furthermore, a discussion is provided regarding how our understanding of the ΞN interaction has benefitted from investigations of s-shell Ξ hypernuclei and p-shell Ξ hypernuclei with A = 7 and 10.
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Hiyama, E., Gibson, B.F. (2023). Theoretical Studies in S = −1 and S = −2 Hypernuclei. In: Tanihata, I., Toki, H., Kajino, T. (eds) Handbook of Nuclear Physics . Springer, Singapore. https://doi.org/10.1007/978-981-15-8818-1_34-1
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