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Note on recursion relations for the Q-cut representation
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DOI：10.1007/JHEP01(2017)008.png)
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摘要
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In this note, we study the Q-cut representation by combining it with BCFW deformation. As a consequence, the one-loop integrand is expressed in terms of a recursion relation, i.e., n-point one-loop integrand is constructed using tree-level amplitudes and m-point one-loop integrands with m <= n - 1. By giving explicit examples, we show that the integrand from the recursion relation is equivalent to that from Feynman diagrams or the original Q-cut construction, up to scale free terms.
Keyword:
Scattering Amplitudes
Differential and Algebraic Geometry
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5.5
论文数:
4.0W
被引数:
13.7W
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