Virtual corrections to gg -> H to two loops in the heavy top limit
Robert V. Harlander
Abstract
The virtual corrections to the production cross section of a Standard Model Higgs boson are computed up to order αs4. Using an effective Lagrangian for the limit Mt -> ∞, we evaluate the relevant massless two-loop vertex diagrams by mapping them onto three-loop two-point functions, following a method recently introduced by Baikov and Smirnov. As a result, we find a gauge-invariant contribution to the total Higgs production cross section at NNLO.
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