publication . Preprint . 2003

Brueckner Rearrangement Effects in $^5_\Lambda$He and $^6_{\Lambda\Lambda}$He

Kohno, M.; Fujiwara, Y.; Akaishi, Y.;
Open Access English
  • Published: 27 Jul 2003
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 $\alpha$-core is reduced by more than 2.5 MeV when the $\Lambda$ adheres to $^4$He to form $^5_\Lambda$He. Similar assessment of rearrangement contributions is essential to deduce the strength of $\Lambda\Lambda$ interaction from experimentally observed $\Delta B_{\Lambda\Lambda}$. The recently observed experimental value of $\sim$ 1 MeV for the $\Delta B_{\Lambda\Lambda}$ of \hll suggests that the matrix element of $<\Lambda \Lambda |v|\Lambda \Lambda>$ in \hll is around -2 MeV.
Subjects
free text keywords: Nuclear Theory
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