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I present the two-loop QCD corrections to the production of a massivequark-anti-quark pair in the massless quark-anti-quark annihilation channel.The result is obtained as a combination of a deep expansion in the mass aroundthe high energy limit and of a numerical integration of a system ofdifferential equations. The primary application of the outcome and developedmethods is top quark pair production at the Large Hadron Collider.

Tops from Light Quarks: Full Mass Dependence at Two-Loops in QCD