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Form factor recursion relations at loop level
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DOI：10.1007/JHEP02(2019)182.png)
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摘要
En 中文
We introduce a prescription to define form factor integrands at loop level in planar N=4 supersymmetric Yang-Mills theory. This relies on a periodic kinematic configuration that has been instrumental to describe form factors at strong coupling in terms of periodic Wilson loops. With this prescription, we are able to formulate loop-level recursion relations for planar form factor integrands, using a two-line (BCFW) and an all-line shift. We also point out important differences with the known recursion relations of integrands of planar loop amplitudes. We present a number of concrete one-loop examples to illustrate and validate our prescription for form factor integrands.
Keyword:
Scattering Amplitudes
Supersymmetric Gauge Theory
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期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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