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Integration rules for loop scattering equations
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DOI：10.1007/JHEP11(2015)080.png)
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Abstract
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We formulate new integration rules for one-loop scattering equations analogous to those at tree-level, and test them in a number of non-trivial cases for amplitudes in scalar phi(3)-theory. This formalism greatly facilitates the evaluation of amplitudes in the CHY representation at one-loop order, without the need to explicitly sum over the solutions to the loop-level scattering equations.
Keywords:
Scattering Amplitudes
Duality in Gauge Field Theories
1/N Expansion
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