The Master Differential Equations for the 2-loop Sunrise Selfmass Amplitudes
High Energy Physics - Theory
2010-04-06 v2 High Energy Physics - Phenomenology
Abstract
The master differential equations in the external square momentum p^2 for the master integrals of the two-loop sunrise graph, in n-continuous dimensions and for arbitrary values of the internal masses, are derived. The equations are then used for working out the values at p^2 = 0 and the expansions in p^2 at p^2 =0, in (n-4) at n to 4 limit and in 1/p^2 for large values of p^2 .
Cite
@article{arxiv.hep-th/9805118,
title = {The Master Differential Equations for the 2-loop Sunrise Selfmass Amplitudes},
author = {M. Caffo and H. Czyz and S. Laporta and E. Remiddi},
journal= {arXiv preprint arXiv:hep-th/9805118},
year = {2010}
}
Comments
28 pages, Latex, 2 encapsulated Postscript figures with epsfig, mistype corrected in Eq.(56)