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

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...

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Bibliographic Details
Published in:arXiv.org 2012-12
Main Authors: Bsaisou, J, Hanhart, C, Liebig, S, U -G Meißner, Nogga, A, Wirzba, A
Format: Article
Language:English
Subjects:
Dipole moments
Electric dipoles
Field theory
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1209.6306