New Solutions to the Strong CP Problem
High Energy Physics - Phenomenology
2009-11-10 v3 High Energy Physics - Theory
Abstract
We exhibit a solution to the strong CP problem in which ultraviolet physics renders the QCD theta angle physically unobservable. Our models involve new strong interactions beyond QCD and particles charged under both the new interactions and ordinary color.
Keywords
Cite
@article{arxiv.hep-ph/0408319,
title = {New Solutions to the Strong CP Problem},
author = {S. D. H. Hsu and F. Sannino},
journal= {arXiv preprint arXiv:hep-ph/0408319},
year = {2009}
}
Comments
RevTex, 2-columns, 5 pages, 1 fig. Revised version, including additional discussion of the UV theory and the low-energy effective theory, to appear in Physics Letters B