Presented By: Leinweber Center for Theoretical Physics
HET Seminar | Two-loop mixed EW-QCD corrections to Drell-Yan lepton pair production
Andreas von Manteuffel (Michigan State)
Drell-Yan lepton pair production is a key process for precision physics at the Large Hadron Collider. In this talk I will consider the two-loop amplitudes required for the full O(\alpha \alpha_s) corrections to this process and discuss the calculation of the required Feynman integrals. While algebraic linear combinations of the integrals fulfill $\;epsilon$ decoupled differential equations, the symbol letters are provably non-rationalizable. I will show that they can nevertheless be integrated in terms of conventional multiple polylogarithms with algebraic arguments, which allow for fast and stable numerical evaluations.
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