Corpus ID: 115469412

Simplifying 5-point tensor reduction

  title={Simplifying 5-point tensor reduction},
  author={J. Fleischer and T. Riemann},
  journal={arXiv: High Energy Physics - Phenomenology},
  • J. Fleischer, T. Riemann
  • Published 2011
  • Physics
  • arXiv: High Energy Physics - Phenomenology
  • The 5-point tensors have the property that after insertion of the metric tensor $g^{\mu \nu}$ in terms of external momenta, all $g^{\mu \nu}$-contributions in the tensor decomposition cancel. If furthermore the tensors are contracted with external momenta, the inverse 5-point Gram determinant $()_5$ cancels automatically. If the remaining 4-point sub-Gram determinant ${s\choose s}_5$ is not small then this approach appears to be particularly efficient in numerical calculations. We also indicate… CONTINUE READING


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