Electric dipole moment of the deuteron in the standard model with NN − N − N coupling
Nodoka Yamanaka, Emiko Hiyama · 2016
We calculate the electric dipole moment (EDM) of the deuteron in the standard model with |�S| = 1 interactions by taking into account the NNNN channel coupling. The two-body problem is solved with the Gaussian Expansion Method using the realistic Argonne v18 nuclear force and the Y N potential which can reproduce the binding energies of 3H, 3He, and 4He. The |�S| = 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 Y N interaction is small, and treatingN andN channels as free is a good approximation for the EDM of the deuteron.