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arXiv · 1209.6306

The electric dipole moment of the deuteron from the QCD $\theta$-term

J. Bsaisou·C. Hanhart·S. Liebig·U. -G. Meißner·A. Nogga·A. Wirzba
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Abstract

The two-nucleon contributions to the electric dipole moment (EDM) of the deuteron, induced by the QCD $\theta$-term, are calculated in the framework of effective field theory up-to-and-including next-to-next-to-leading order. In particular we find for the difference of the deuteron EDM and the sum of proton and neutron EDM induced by the QCD $\theta$-term a value of $(-5.4\pm 3.9)\,\bar\theta\times 10^{-4}\, e$ fm. The by far dominant uncertainty comes from the CP- and isospin-violating $\pi NN$ coupling constant.

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J. Bsaisou, C. Hanhart, S. Liebig, U. -G. Meißner, A. Nogga, A. Wirzba. 2012-09-27. The electric dipole moment of the deuteron from the QCD $\theta$-term. https://doi.org/10.1140/epja/i2013-13031-x

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