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arXiv · 1605.00161

Electric dipole moment of the deuteron in the standard model with $NN - ΛN - ΣN$ coupling

Nodoka Yamanaka
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Abstract

We calculate the electric dipole moment (EDM) of the deuteron in the standard model with $|ΔS| =1$ interactions by taking into account the $NN - ΛN - ΣN$ channel coupling, which is an important nuclear level systematics. The two-body problem is solved with the Gaussian Expansion Method using the realistic Argonne $v18$ nuclear force and the $YN$ potential which can reproduce the binding energies of $^3_Λ$H, $^3_Λ$He, and $^4_Λ$He. The $|ΔS| =1$ interbaryon potential is modeled by the one-meson exchange process. It is found that the deuteron EDM is modified by less than 10\%, and the main contribution to this deviation is due to the polarization of the hyperon-nucleon channels. The effect of the $YN$ interaction is small, and treating $ ΛN$ and $ ΣN$ channels as free is a good approximation for the EDM of the deuteron.

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Nodoka Yamanaka. 2017-04-27. Electric dipole moment of the deuteron in the standard model with $NN - ΛN - ΣN$ coupling. https://doi.org/10.1016/j.nuclphysa.2017.04.015

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