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arXiv · 1401.6766

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

Bo Feng·Jun Zhen·Rijun Huang·Kang Zhou
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Abstract

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.

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Bo Feng, Jun Zhen, Rijun Huang, Kang Zhou. 2014-01-27. Integral Reduction by Unitarity Method for Two-loop Amplitudes: A Case Study. https://doi.org/10.1007/jhep06(2014)166

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