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arXiv · 1811.00329

Effect of the Pauli exclusion principle in the electric dipole moment of $^9$Be with $|ΔS|=1$ interactions

Jehee Lee·Nodoka Yamanaka·Emiko Hiyama
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Abstract

We calculate the contribution of the $|ΔS|=1$ $K$ meson exchange process generated by the Cabibbo-Kobayashi-Maskawa matrix to the electric dipole moment (EDM) of the $^9$Be nucleus by considering the $αn - αΛ$ channel coupling. It is found that the effect of the Pauli exclusion principle is not important intermediate $S=-1$ state, and that the result is consistent with the EDM of $^9$Be calculated with the $|ΔS|=1$ interactions as a perturbation without considering the nucleus-hypernucleus mixing. Our result suggests that the effect of the $|ΔS|=1$ interactions is neither suppressed nor enhanced in nuclei, if the difference of binding energies between the nucleus and the hypernucleus is small compared to the hyperon-nucleon mass difference.

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Jehee Lee, Nodoka Yamanaka, Emiko Hiyama. 2019-05-16. Effect of the Pauli exclusion principle in the electric dipole moment of $^9$Be with $|ΔS|=1$ interactions. https://doi.org/10.1103/physrevc.99.055503

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