Methods to apply the spinor helicity technique and string reorganization to multiloop amplitudes using the Feynman- and Schwinger-parameter representations are reviewed and expanded.
Canadian Journal of Physics
- Pub Date:
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- 41 pages in Plain Tex, plus 6 pages of (fourteen) figures in a postcript file attached to the end of the Tex file