Supersymmetric Noncommutative QED and Lorentz Violation
arXiv:hep-ph/0209077 · doi:10.1016/S0370-2693(02)02934-9
Abstract
We consider Lorentz-violating operators induced at the loop level in softly-broken supersymmetric noncommutative QED. Dangerous operators forbidden in the supersymmetric limit are generated via finite corrections, with the scale of supersymmetry breaking serving as a gauge-invariant regulator. We compare the most dangerous loop effects to those obtained in noncommutative theories truncated by a momentum-space cutoff, and find significantly improved bounds.
11 pages LaTeX, 4 eps figures