212 citations · 1k across the 77 of their papers we have counts for
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hep-ph1998★ 57 cited
Simplifying Algebra in Feynman Graphs, Part II: Spinor Helicity from the Spacecone
Gordon Chalmers, Warren Siegel
Manifestly Lorentz covariant Feynman rules are given in terms of a "scalar" field for each helicity, dramatically simplifying the calculation of amplitudes with massless particles.…
hep-ph1997★ 29 cited
Simplifying Algebra in Feynman Graphs, Part I:Spinors
G. Chalmers, W. Siegel
We present a general formalism for simplifying manipulations of spin indices of massless and massive spinors and vectors in Feynman diagrams. The formalism is based on covariantly…
hep-ph1994★ 212 cited
One-Loop N Gluon Amplitudes with Maximal Helicity Violation via Collinear Limits
Z. Bern, G. Chalmers, L. Dixon +1
We present a conjecture for the -gluon one-loop amplitudes with maximal helicity violation. The conjecture emerges from the powerful requirement that the amplitudes have the cor…