An Overview of Maximal Unitarity at Two Loops
arXiv:1212.2132
Abstract
We discuss the extension of the maximal-unitarity method to two loops, focusing on the example of the planar double box. Maximal cuts are reinterpreted as contour integrals, with the choice of contour fixed by the requirement that integrals of total derivatives vanish on it. The resulting formulae, like their one-loop counterparts, can be applied either analytically or numerically.
7 pages, presented at Loops & Legs 2012, Wernigerode, Germany
References in corpus (9)
- CutTools: a program implementing the OPP reduction method to compute one-loop amplitudes
- Full one-loop amplitudes from tree amplitudes
- Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
- Towards a Basis for Planar Two-Loop Integrals
- Hepta-Cuts of Two-Loop Scattering Amplitudes
- Scattering Amplitudes from Multivariate Polynomial Division
- Integrand-Level Reduction of Loop Amplitudes by Computational Algebraic Geometry Methods
- Integrand Reduction for Two-Loop Scattering Amplitudes through Multivariate Polynomial Division
- Multi-Parton Scattering Amplitudes via On-Shell Methods
Cited by in corpus (6)
- Lectures on differential equations for Feynman integrals
- A New Algorithm For The Generation Of Unitarity-Compatible Integration By Parts Relations
- Azurite: An algebraic geometry based package for finding bases of loop integrals
- On Genera of Curves from High-loop Generalized Unitarity Cuts
- Multivariate Residues and Maximal Unitarity
- Integral Reduction by Unitarity Method for Two-loop Amplitudes: A Case Study