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arXiv · 1604.07314

Feynman Rules of Higher-order Poles in CHY Construction

Rijun Huang·Bo Feng·Ming-xing Luo·Chuan-Jie Zhu
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Abstract

In this paper, we generalize the integration rules for scattering equations to situations where higher-order poles are present. We describe the strategy to deduce the Feynman rules of higher-order poles from known analytic results of simple CHY-integrands, and propose the Feynman rules for single double pole and triple pole as well as duplex-double pole and triplex-double pole structures. We demonstrate the validation and strength of these rules by ample non-trivial examples.

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Rijun Huang, Bo Feng, Ming-xing Luo, Chuan-Jie Zhu. 2016-04-25. Feynman Rules of Higher-order Poles in CHY Construction. https://doi.org/10.1007/jhep06(2016)013

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