ITFA-2008-06 Closed-Form Decomposition of One-Loop Massive Amplitudes

@inproceedings{Britto2008ITFA200806CD,
  title={ITFA-2008-06 Closed-Form Decomposition of One-Loop Massive Amplitudes},
  author={Ruth Britto and Bo Feng and Pierpaolo Mastrolia},
  year={2008}
}
We present formulas for the coefficients of 2-, 3-, 4and 5-point master integrals for oneloop massive amplitudes. The coefficients are derived from unitarity cuts in D dimensions. The input parameters can be read off from any unitarity-cut integrand, as assembled from tree-level expressions, after simple algebraic manipulations. The formulas presented here are suitable for analytical as well as numerical evaluation. Their validity is confirmed in two known cases of helicity amplitudes… CONTINUE READING

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