Abstract
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(D 0 → K − K + ) − aCP(D 0 → 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.
Highlights
The neutron electric dipole moment (NEDM) plays a special role in current searches of physics beyond the Standard Model (SM)
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
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
Summary
The neutron electric dipole moment (NEDM) plays a special role in current searches of physics beyond the Standard Model (SM). We present a study [2] of NEDM within a model suggested by Altmannshofer et al [3] containing a c → u flavor changing colored scalar. This model was proposed to explain measurements of the apparent CP asymmetry in D → K+K−/π+π− larger than SM expectations. A new measurement by LHCb presented [7] at this workshop are consistent with zero, and the world average above will be changed Other authors have considered possible NP [3, 8, 11]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
