Two-loop self-energy diagrams worked out with NDIM

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Two-loop self-energy diagrams worked out with NDIM

In this work we calculate two two-loop massless Feynman integrals pertaining to self-energy diagrams using NDIM (Negative Dimensional Integration Method). We show that the answer we get is 36-fold degenerate. We then consider special cases of exponents for propagators and the outcoming results compared with known ones obtained via traditional methods. PACS numbers: 02.90+p, 03.70+k, 12.38.Bx Sh...

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ژورنال

عنوان ژورنال: The European Physical Journal C

سال: 1998

ISSN: 1434-6044

DOI: 10.1007/s100520050259