PoS - Proceedings of Science
Volume 303 - Loops and Legs in Quantum Field Theory (LL2018) - Parallel 2
Five-Point Two-Loop Amplitudes from Numerical Unitarity
S. Abreu, F. Febres Cordero, H. Ita, B. Page,* M. Zeng
*corresponding author
Full text: pdf
Published on: October 02, 2018
Abstract
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-field arithmetics.
DOI: https://doi.org/10.22323/1.303.0016
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