The String CP Problem
High Energy Physics - Phenomenology
2009-12-04 v2 High Energy Physics - Theory
Abstract
We show that string models with low energy supersymmetry which accommodate the fermion mass hierarchy generally give non-universal soft trilinear couplings (A-terms). In conjunction with the apparently large Cabibbo-Kobayashi-Maskawa (CKM) phase, this results in large fermion EDMs even in the absence of CP violating phases in the supersymmetry breaking terms and the mu-term. Nonobservation of the EDMs therefore implies that strings select special flavor and/or supersymmetry breaking patterns.
Cite
@article{arxiv.hep-ph/0112260,
title = {The String CP Problem},
author = {S. Abel and S. Khalil and O. Lebedev},
journal= {arXiv preprint arXiv:hep-ph/0112260},
year = {2009}
}
Comments
Revtex, 4 pages, FCNC discussion added, to appear in Phys Rev Lett (title changed in journal)