Brueckner Rearrangement Effects in 5ΛHe and 6ΛΛHe
M. Kohno, Y. Fujiwara, Y. Akaishi
Abstract
Rearrangement effects in light hypernuclei are investigated in the framework of the Brueckner theory. We can estimate without detailed numerical calculations that the energy of the α-core is reduced by more than 2.5 MeV when the Λ adheres to 4He to form 5ΛHe. Similar assessment of rearrangement contributions is essential to deduce the strength of ΛΛ interaction from experimentally observed ΔBΛΛ. The recently observed experimental value of 1 MeV for the ΔBΛΛ of suggests that the matrix element of <ΛΛ|v|ΛΛ> in is around -2 MeV.
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