  In the upcoming LHC run we will be able to probe the structure ofthe
loop--induced Higgs--gluon coupling through kinematics. First, we establish
state-of-the-art simulations with up to two jets to next-to-leading order
including top mass effects. They allow us to search for deviations from the
low-energy limits in boosted Higgs production. In addition, the size of the top
mass effects suggests that they should generally be included in Higgs studies
at the LHC. Next, we show how off-shell Higgs production with a decay to four
leptons is sensitive to the same top mass effects. We compare the potential of
both methods based on the same top--Higgs Lagrangian. Finally, we comment on
related model assumptions required for a Higgs width measurement.

High Energy Physics - Phenomenology