English

Colored scalars and the neutron electric dipole moment

High Energy Physics - Phenomenology 2015-06-18 v4

Abstract

We investigate new contributions to the neutron electric dipole moment induced by colored scalars. As an example, we evaluate contributions coming from the 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 the ACP(D0KK+)ACP(D0π+π)A_{CP} (D^0 \to K^- K^+) - A_{CP} (D^0 \to \pi^+ \pi^-) asymmetry on the tree level. Using these charm asymmetry constrained couplings, we calculate two-loop contributions to the neutron electric dipole moment and find that they are of the same order as the experimental bound. We comment also on contributions of higher dimensional operators to the neutron electric dipole moment within this framework.

Keywords

Cite

@article{arxiv.1401.2275,
  title  = {Colored scalars and the neutron electric dipole moment},
  author = {Svjetlana Fajfer and Jan O. Eeg},
  journal= {arXiv preprint arXiv:1401.2275},
  year   = {2015}
}

Comments

14 pages, 5 figures, 53 references