The electric dipole moment of the deuteron from the QCD θ-term

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

doi:10.1140/epja/i2013-13031-x

2022 Impact factor 2.7

Hadrons and Nuclei

Eur. Phys. J. A (2013) 49: 31
https://doi.org/10.1140/epja/i2013-13031-x

Regular Article - Theoretical Physics

The electric dipole moment of the deuteron from the QCD θ-term

J. Bsaisou¹⁹⁸⁶¹^*, C. Hanhart¹⁹⁸⁶¹^,29861^,39861, S. Liebig¹⁹⁸⁶¹, U. -G. Meißner¹⁹⁸⁶¹^,29861^,39861^,49861^,59861, A. Nogga¹⁹⁸⁶¹^,29861^,39861 and A. Wirzba¹⁹⁸⁶¹^,29861^,39861

¹⁹⁸⁶¹ Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany
²⁹⁸⁶¹ Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425, Jülich, Germany
³⁹⁸⁶¹ JARA - Forces And Matter Experiments, Forschungszentrum Jülich, D-52425, Jülich, Germany
⁴⁹⁸⁶¹ Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115, Bonn, Germany
⁵⁹⁸⁶¹ Bethe Center for Theoretical Physics, Universität Bonn, D-53115, Bonn, Germany

^* e-mail: j.bsaisou@fz-juelich.de

Received: 10 January 2013
Revised: 31 January 2013
Accepted: 1 February 2013
Published online: 8 March 2013

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 e fm. The by far dominant uncertainty comes from the CP- and isospin-violating πNN coupling constant.