Abstract
We consider a two-loop propagator-type Feynman integral with two composite external vertices as a function of two Bjorken variables \(x\), \(y\), arbitrary indices \({{n}_{i}}\) of propagators and space-time dimension \(D\). The integral is evaluated in terms of a hypergeometric double series. We find a chain of reductions of this double series to simpler functions in some physically interesting situations. The Mellin moments of the integral are also considered.
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ACKNOWLEDGMENTS
S.V.M. acknowledges the support of the BelRFFR-JINR, Grant no. F18D-002. N.V. was supported by a grant from the Russian Scientific Foundation (project no. 18-12-00213).
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Volchanskiy, N., Mikhailov, S.V. Two-Loop Kite Master Integral for a Correlator of Two Composite Vertices. Phys. Part. Nuclei 51, 609–613 (2020). https://doi.org/10.1134/S1063779620040747
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DOI: https://doi.org/10.1134/S1063779620040747