https://doi.org/10.1051/epjconf/201817506018
Electric Dipole Moment Results from lattice QCD
1
Facility for Rare Isotope Beams, Physics Department, Michigan State University, East Lansing, Michigan.
2
Institute for Advanced Simulation (IAS-4), Institut für Kernphysik (IKP-3), and Jülich Center for Hadron Physics, FZJ.
3
Nikhef, Amsterdam, the Netherlands.
* e-mail: dragos@frib.msu.edu
Published online: 26 March 2018
We utilize the gradient flow to define and calculate electric dipole moments induced by the strong QCD θ-term and the dimension-6 Weinberg operator. The gradient flow is a promising tool to simplify the renormalization pattern of local operators. The results of the nucleon electric dipole moments are calculated on PACS-CS gauge fields (available from the ILDG) using Nf = 2+1, of discrete size 323×64 and spacing a ≃ 0.09 fm. These gauge fields use a renormalization-group improved gauge action and a nonperturbatively O(a) improved clover quark action at β = 1.90, with cSW = 1.715. The calculation is performed at pion masses of mπ ≃ 411, 701 MeV.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
