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hep-ph2003
Vertex diagrams for the QED form factors at the 2-loop level
R. Bonciani, P. Mastrolia, E. Remiddi
We carry out a systematic investigation of all the 2-loop integrals occurring in the electron vertex in QED in the continuous -dimensional regularization scheme, for on-shell el…
hep-ph2002
Numerical evaluation of master integrals from differential equations
M. Caffo, H. Czyz, E. Remiddi
The 4-th order Runge-Kutta method in the complex plane is proposed for numerically advancing the solutions of a system of first order differential equations in one external invaria…
hep-ph2002
Numerical evaluation of the general massive 2-loop self-mass master integrals from differential equations
M. Caffo, H. Czyz, E. Remiddi
The system of 4 differential equations in the external invariant satisfied by the 4 master integrals of the general massive 2-loop sunrise self-mass diagram is solved by the Runge-…