Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1997-05-15
Nucl.Phys. A625 (1997) 95-106
Physics
Nuclear Physics
Nuclear Theory
11pp, LaTeX, 7 EPS figures, uses epsf.sty
Scientific paper
10.1016/S0375-9474(97)00493-4
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.
Oka Makoto
Saito Katsuhiko
Suzuki Toshiya
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