Twistor Space Structure Of One-Loop Amplitudes In Gauge Theory
arXiv:hep-th/0406177 · doi:10.1088/1126-6708/2004/10/074
Abstract
We analyze the twistor space structure of certain one-loop amplitudes in gauge theory. For some amplitudes, we find decompositions that make the twistor structure manifest; for others, we explore the twistor space structure by finding differential equations that the amplitudes obey.
41 pp. Reference in introduction to forthcoming new interpretation; improved analysis of --+++ non-supersymmetric one-loop amplitude; additional minor corrections; v.3: minor clarifications and reference added