Neutron Electric Dipole Moment from colored scalars⋆
1 Department of Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
2 J. Stefan Institute, Jamova 39, P.O.Box 3000, 1001 Ljubljana, Slovenia
3 Department of Physics, University of Oslo, P.O.Box 1048 Blindern, N-0316 Oslo, Norway
Published online: 24 November 2014
We present new contributions to the neutron electric dipole moment induced by a color octet, weak doublet scalar, accommodated within a modified Minimal Flavor Violating framework. These flavor non-diagonal couplings of the color octet scalar might account for an assymmetry of order 3 × 10−3 for aCP(D0 → K−K+) − aCP(D0 → π+π−) at tree level. The same couplings constrained by this assymmetry also induce two-loop contributions to the neutron electric dipole moment. We find that the direct CP violating asymmetry in neutral D-meson decays is more constraining on the allowed parameter space than the current experimental bound on neutron electric dipole moment.
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