Main Image
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: 2018 October 02
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.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.