Publication: A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons
A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons
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Hartanto, H. B., Badger, S., Brønnum-Hansen, C., & Peraro, T. (2019). A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons. Journal of High Energy Physics, 2019(9), 119. https://doi.org/10.1007/jhep09(2019)119
Abstract
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Abstract
We present the first numerical results for the two-loop helicity amplitudes for the scattering of four partons and a W-boson in QCD. We use a finite field sampling method to reduce directly from Feynman diagrams to the coefficients of a set of master integrals after applying integration-by-parts identities. Since the basis of master integrals is not yet fully known analytically, we identify a set of master integrals with a simple divergence structure using local numerator insertions. This allows for accurate numerical evaluation of th
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- Hartanto, Heribertus Bayu
- Badger, Simon
- Brønnum-Hansen, Christian
- Peraro, Tiziano
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Citations
Hartanto, H. B., Badger, S., Brønnum-Hansen, C., & Peraro, T. (2019). A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons. Journal of High Energy Physics, 2019(9), 119. https://doi.org/10.1007/jhep09(2019)119
