A New Class of Solutions to the Strong CP Problem with a Small Two-Loop theta
High Energy Physics - Phenomenology
2009-09-01 v1
Abstract
We present a new class of models which produce zero theta (QCD} angle at the tree and one-loop level due to hermiticity of sub-blocks in the extended quark mass matrices. The structure can be maintained typically by non-abelian generation symmetry. Two examples are given for this class of solutions.
Keywords
Cite
@article{arxiv.hep-ph/0312139,
title = {A New Class of Solutions to the Strong CP Problem with a Small Two-Loop theta},
author = {Darwin Chang and Wai-Yee Keung},
journal= {arXiv preprint arXiv:hep-ph/0312139},
year = {2009}
}
Comments
4 pages, 2 figures