Two-loop sunset diagrams with three massive lines
B. A. Kniehl, A. V. Kotikov, A. Onishchenko, O. Veretin
Abstract
In this paper, we consider the two-loop sunset diagram with two different masses, m and M, at spacelike virtuality q2 = -m2. We find explicit representations for the master integrals and an analytic result through O(epsilon) in d=4-2epsilon space-time dimensions for the case of equal masses, m = M.
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