Abstract
In this paper, we generalize the unitarity method to two-loop diagrams and use it to discuss the master integrals 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 doubletriangle diagram and the triangle-box diagram. For later two kinds of diagrams, we have given complete analytical results in general (4 − 2ϵ)-dimension.
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ArXiv ePrint: 1401.6766
The unusual ordering of authors is just to satisfy outdated requirement for Ph. Degree Of Zhejiang University in China. (Kang Zhou)
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Feng, B., Zhen, J., Huang, R. et al. Integral reduction by unitarity method for two-loop amplitudes: a case study. J. High Energ. Phys. 2014, 166 (2014). https://doi.org/10.1007/JHEP06(2014)166
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DOI: https://doi.org/10.1007/JHEP06(2014)166