One-Loop Amplitudes for e⁺ e^- to Four Partons

1997/08/04 by Z. Bern, L. Dixon, D. A. Kosower · 2 citations
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1016/s0550-3213(97)00703-7

published as Nucl.Phys.B513:3-86,1998 · Tex, 82 pages, Maple and Mathematica files containing the amplitudes are available from the authors

arxiv created 1997/08/04 · arxiv updated 2010/11/15

Abstract

We present the first explicit formulae for the complete set of one-loop helicity amplitudes necessary for computing next-to-leading order corrections for e⁺ e^- annihilation into four jets, for W, Z or Drell-Yan production in association with two jets at hadron colliders, and for three-jet production in deeply inelastic scattering experiments. We include a simpler form of the previously published amplitudes for e⁺ e^- to four quarks. We obtain the amplitudes using their analytic properties to constrain their form. Systematically eliminating spurious poles from the amplitudes leads to relatively compact results.

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