117 citations · 225 across the 5 of their papers we have counts for
5 papers
Spectral representation for on-shell massless double box
N. I. Ussyukina
A method is presented for obtaining the -expansion for on-shell massless scalar double-box diagram.
Threshold and pseudothreshold values of the sunset diagram
F. A. Berends, A. I. Davydychev, N. I. Ussyukina
Analytic results for the threshold and pseudothreshold values of the sunset diagram with arbitrary masses are obtained in terms of dilogarithms of ratios of the masses.
Two-loop three-point diagrams with irreducible numerators
Natalia I. Ussyukina, Andrei I. Davydychev
We study the problem of calculating two-loop three-point diagrams with irreducible numerators (i.e. numerators which cannot be expressed in terms of the denominators). For the case…
New results for two-loop off-shell three-point diagrams
N. I. Ussyukina, A. I. Davydychev
A number of exact results for two-loop three-point diagrams with massless internal particles and arbitrary (off-shell) external momenta are presented. Divergent contributions are c…
Some Exact Results for Two-Loop Diagrams with Three and Four External Lines
N. I. Ussyukina, A. I. Davydychev
Evaluation of three- and four-point diagrams with massless internal particles and arbitrary external momenta is considered. Exact results for some two-loop diagrams (planar and non…