Abstract
The two-nucleon contributions to the electric dipole moment (EDM) of the deuteron, induced by the QCD θ-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 θ-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 πNN coupling constant.
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Bsaisou, J., Hanhart, C., Liebig, S. et al. The electric dipole moment of the deuteron from the QCD θ-term. Eur. Phys. J. A 49, 31 (2013). https://doi.org/10.1140/epja/i2013-13031-x
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DOI: https://doi.org/10.1140/epja/i2013-13031-x