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Integral Reduction by Unitarity Method for Two-loop Amplitudes: A Case Study

In this paper, we generalize the unitarity method to two-loop diagrams and use it to discuss the integral bases of reduction. To test out method, we focus on the four-point double-box diagram as well as its related daughter diagrams, i.e., the double-triangle diagram and the triangle-box diagram. For later two kinds of diagrams, we have given complete analytical results in general (4-2\eps)-dimension.

preprint2014arXivOpen access
Bo FengJun ZhenRijun HuangKang Zhou
hep-th
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Open access4 authors1 topic
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Bo FengJun ZhenRijun HuangKang Zhou

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