arXiv:hep-ph/0107291·v2·High Energy Physics — Phenomenology
Bounding Noncommutative QCD
Carl E. Carlson🇺🇸 · Christopher D. Carone (William and Mary)🇺🇸 · Richard F. Lebed (Arizona State University)🇺🇸
Abstract
Jurco, Moller, Schraml, Schupp, and Wess have shown how to construct noncommutative SU(N) gauge theories from a consistency relation. Within this framework, we present the Feynman rules for noncommutative QCD and compute explicitly the most dangerous Lorentz-violating operator generated through radiative corrections. We find that interesting effects appear at the one-loop level, in contrast to conventional noncommutative U(N) gauge theories, leading to a stringent bound. Our results are consistent with others appearing recently in the literature that suggest collider limits are not competitive with low-energy tests of Lorentz violation for bounding the scale of spacetime noncommutativity.
Comments: 13 pages RevTeX, 2 eps figures, comment on gauge invariance and one reference added