Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10723325 | Physics Letters B | 2010 | 6 Pages |
Abstract
We analyze the CP-violating electric dipole form factor of the nucleon in the framework of covariant baryon chiral perturbation theory. We give a new upper bound on the vacuum angle, |θ0|â²2.5Ã10â10. The quark mass dependence of the electric dipole moment is discussed and compared to lattice QCD data. We also perform the matching between its representations in the three- and two-flavor theories.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
K. Ottnad, B. Kubis, U.-G. MeiÃner, F.-K. Guo,