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arXiv · 1904.10834

Master Integrals for the two-loop, non-planar QCD corrections to top-quark pair production in the quark-annihilation channel

Matteo Becchetti·Roberto Bonciani·Valerio Casconi·Andrea Ferroglia·Simone Lavacca·Andreas von Manteuffel
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Abstract

We present the analytic calculation of the Master Integrals for the two-loop, non-planar topologies that enter the calculation of the amplitude for top-quark pair hadroproduction in the quark-annihilation channel. Using the method of differential equations, we expand the integrals in powers of the dimensional regulator $\epsilon$ and determine the expansion coefficients in terms of generalized harmonic polylogarithms of two dimensionless variables through to weight four.

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Matteo Becchetti, Roberto Bonciani, Valerio Casconi, Andrea Ferroglia, Simone Lavacca, Andreas von Manteuffel. 2019-04-24. Master Integrals for the two-loop, non-planar QCD corrections to top-quark pair production in the quark-annihilation channel. https://doi.org/10.1007/jhep08(2019)071

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