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arXiv · 0704.1271

Numerical Evaluation of Six-Photon Amplitudes

Giovanni Ossola·Costas G. Papadopoulos·Roberto Pittau
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Abstract

We apply the recently proposed amplitude reduction at the integrand level method, to the computation of the scattering process 2 photons -> 4 photons, including the case of a massive fermion loop. We also present several improvements of the method, including a general strategy to reconstruct the rational part of any one-loop amplitude and the treatment of vanishing Gram-determinants.

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Giovanni Ossola, Costas G. Papadopoulos, Roberto Pittau. 2007-07-23. Numerical Evaluation of Six-Photon Amplitudes. https://doi.org/10.1088/1126-6708%2F2007%2F07%2F085

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