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Abstract: We compute the electric dipole moment of proton and neutron from lattice QCDsimulations with N f=2 flavors of dynamical quarks at imaginary vacuum angletheta. The calculation proceeds via the CP odd form factor F 3. A novel featureof our calculation is that we use partially twisted boundary conditions toextract F 3 at zero momentum transfer. As a byproduct, we test the QCD vacuumat nonvanishing theta.



Author: R. Horsley, T. Izubuchi, Y. Nakamura, D. Pleiter, P.E.L. Rakow, G. Schierholz, J. Zanotti

Source: https://arxiv.org/



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