Analytical Result for Dimensionally Regularized Massless On-shell Double Box

Details Analytical Result for Dimensionally Regularized Massless On-shell Double Box Analytical Result for Dimensionally Regularized Massless On-shell Double Box

1999-05-12

arxiv.org/abs/hep-ph/9905323v2

Phys.Lett. B460 (1999) 397-404

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTeX. An error in eq. (24) corrected (8 replaced by 5), with resulting changes in eqs. (25), (28-30)

Scientific paper

10.1016/S0370-2693(99)00777-7

The dimensionally regularized massless on-shell double box Feynman diagram with powers of propagators equal to one is analytically evaluated for general values of the Mandelstam variables s and t. An explicit result is expressed either in terms of polylogarithms Li_a(-t/s), up to a=4, and generalized polylogarithms S_{a,b}(-t/s), with a=1,2 and b=2, or in terms of these functions depending on the inverse ratio, s/t.

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