Structure of A=11 double-Λ hypernuclei studied withthree-body forces

  • The energy levels and ΛΛ bond energy of the double-Λ hypernucleus 11Be are calculated considering two- and three-nucleon forces. The interactions between the constituent particles are contact interactions that reproduce the low-energy binding energy of the nuclei. Effective action is constructed to involve the three-body forces. In this paper, we compare the binding energy result that is obtained with the experimental and other modern nucleon-nucleon potentials. The results of all the schemes agree very well, showing the high accuracy of our present ability to calculate the many-nucleon bound state with three-body forces. The experimental value of BΛ Λ(ΛΛ11Be)=20.83 MeV seems to be more compatible with our calculated value of BΛΛ(ΛΛ11Be)=19.31 MeV in comparison with the calculated result of 18.23 MeV by Hiyama et al.
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H. Sadeghi, Sh. Nahidinejad and K. Bahraminejad. Structure of A=11 double-Λ hypernuclei studied withthree-body forces[J]. Chinese Physics C, 2013, 37(5): 054101. doi: 10.1088/1674-1137/37/5/054101
H. Sadeghi, Sh. Nahidinejad and K. Bahraminejad. Structure of A=11 double-Λ hypernuclei studied withthree-body forces[J]. Chinese Physics C, 2013, 37(5): 054101.  doi: 10.1088/1674-1137/37/5/054101 shu
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Received: 2012-06-12
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Structure of A=11 double-Λ hypernuclei studied withthree-body forces

    Corresponding author: H. Sadeghi,

Abstract: The energy levels and ΛΛ bond energy of the double-Λ hypernucleus 11Be are calculated considering two- and three-nucleon forces. The interactions between the constituent particles are contact interactions that reproduce the low-energy binding energy of the nuclei. Effective action is constructed to involve the three-body forces. In this paper, we compare the binding energy result that is obtained with the experimental and other modern nucleon-nucleon potentials. The results of all the schemes agree very well, showing the high accuracy of our present ability to calculate the many-nucleon bound state with three-body forces. The experimental value of BΛ Λ(ΛΛ11Be)=20.83 MeV seems to be more compatible with our calculated value of BΛΛ(ΛΛ11Be)=19.31 MeV in comparison with the calculated result of 18.23 MeV by Hiyama et al.

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