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arXiv · hep-ph/0103014

The Threshold Expansion of the 2-loop Sunrise Selfmass Master Amplitudes

M. Caffo·H. Czyz·E. Remiddi
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Abstract

The threshold behavior of the master amplitudes for two loop sunrise self-mass graph is studied by solving the system of differential equations, which they satisfy. The expansion at the threshold of the master amplitudes is obtained analytically for arbitrary masses.

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M. Caffo, H. Czyz, E. Remiddi. 2002-03-22. The Threshold Expansion of the 2-loop Sunrise Selfmass Master Amplitudes. https://doi.org/10.1016/s0550-3213(01)00351-0

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