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arXiv · hep-ph/9912501

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

M. Caffo·H. Czyz·E. Remiddi
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Abstract

The values at pseudothreshold of two loop sunrise master amplitudes with arbitrary masses are obtained by solving a system of differential equations. The expansion at pseudothreshold of the amplitudes is constructed and some lowest terms are explicitly presented.

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M. Caffo, H. Czyz, E. Remiddi. 2002-03-22. The Pseudothreshold Expansion of the 2-loop Sunrise Selfmass Master Amplitudes. https://doi.org/10.1016/s0550-3213(00)00274-1

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