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Exchange Currents for Hypernuclear Magnetic Moments | | K. Saito
; M. Oka
; T. Suzuki
; | | Date: |
15 May 1997 | | Journal: | Nucl.Phys. A625 (1997) 95-106 | | Subject: | nucl-th | | Affiliation: | Tokyo Inst. of Tech.) and T. Suzuki (Nihon Univ. | | Abstract: | The meson(K and $pi$) exchange currents for the hypernuclear magnetic moments are calculated using the effective Lagrangian method. The seagull diagram, the mesonic diagram and the $Sigma^0$-excitation diagram are considered. The $Lambda$-N exchange magnetic moments for the ${}^5_{Lambda}He$, ${}^6_{Lambda}He$ and ${}^6_{Lambda}Li$ are calculated employing the harmonic oscillator shell model. It is found that the two-body correction is about -9% of the single particle value for ${}^5_{Lambda}He$. The $pi$ exchange current, induced only in the $Sigma^0$-excitation diagram, is found to give dominant contribution for the isovector magnetic moments of hypernuclei with A=6. | | Source: | arXiv, nucl-th/9705029 | | Services: | Forum | Review | PDF | Favorites | |
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