The Infrared Behavior of One-Loop QCD Amplitudes at Next-to-Next-to-Leading Order

Z. Bern; V. Del Duca; W. B. Kilgore; C. R. Schmidt

Paper

The Infrared Behavior of One-Loop QCD Amplitudes at Next-to-Next-to-Leading Order

Abstract

We present universal factorization formulas describing the behavior of one-loop QCD amplitudes as external momenta become either soft or collinear. Our results are valid to all orders in the dimensional regularization parameter,

. Terms through

can contribute in infrared divergent phase space integrals associated with next-to-next-to-leading order jet cross-sections.