We present advances in the development of the numerical unitarity method for the computation of multi-loop amplitudes in QCD. As an application, we show results for all the leading-color two-loop five-gluon helicity amplitudes. The amplitudes are reduced to a linear combination of master integrals by employing unitarity-compatible integration-by-parts identities, and the corresponding integral coefficients are computed in an exact manner on rational phase-space points through finite fields arithmetics.
@article{arxiv.1807.09447,
title = {Five-Point Two-Loop Amplitudes from Numerical Unitarity},
author = {Samuel Abreu and Fernando Febres Cordero and Harald Ita and Ben Page and Mao Zeng},
journal= {arXiv preprint arXiv:1807.09447},
year = {2018}
}
Comments
12 pages, 2 figures, talks presented at the Loops and Legs Workshop 2018