Two-loop helicity amplitudes for fermion
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Z. Bern; A. De Freitas
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Article
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2004
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Elsevier Science
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English
โ 137 KB
We discuss the calculation of two-loop helicity amplitudes for quark-quark scattering in QCD and four-gluino scattering in N = 1 supersymmetric Yang-Mills theory. We study the dependence of the results on different variants of dimensional regularization. In particular, we consider the 't Hooft-Veltm