Two-loop sunset diagrams with three massive lines

In this paper, we consider the two-loop sunset diagram with two different masses, m and M, at spacelike virtuality q 2 = − m 2 . We find explicit representations for the master integrals and an analytic result through O ( ɛ ) in d = 4 − 2 ɛ space–time dimensions for the case of equal masses, m = M ....

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Bibliographic Details
Published inNuclear physics. B Vol. 738; no. 1; pp. 306 - 316
Main Authors Kniehl, B.A., Kotikov, A.V., Onishchenko, A.I., Veretin, O.L.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.03.2006
Subjects
11.15.-q
12.38.Bx
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Summary:In this paper, we consider the two-loop sunset diagram with two different masses, m and M, at spacelike virtuality q 2 = − m 2 . We find explicit representations for the master integrals and an analytic result through O ( ɛ ) in d = 4 − 2 ɛ space–time dimensions for the case of equal masses, m = M .
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2006.01.013