Extracting analytical one-loop amplitudes from numerical evaluations
Extracting analytical one-loop amplitudes from numerical evaluations
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DOI：
10.1007/jhep07(2019)123
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发表时间：
2019-04
影响因子：
5.4
通讯作者：
Giuseppe De Laurentis;D. Maître
中科院分区：
文献类型：
--
作者：
Giuseppe De Laurentis;D. Maître
In this article we present a method to generate analytic expressions for the integral coefficients of loop amplitudes using numerical evaluations only. We use highprecision arithmetics to explore the singularity structure of the coefficients and decompose them into parts of manageable complexity. To illustrate the usability of our method we provide analytical expressions for all helicity configurations of the colour-ordered six-point gluon amplitudes at one loop with a gluon in the loop.
