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The main Higgs production channel at hadron colliders is gluon fusion viaheavy-quark loops. We present the results of a fully exclusive simulation ofgluon fusion Higgs production based on the matrix elements for h + 0, 1, 2partons including full heavy-quark loop dependence, matched to a parton shower.We consider a Higgs with standard model couplings as well as models where theHiggs has enhanced couplings to bottom quarks (b-philic). We study the mostrelevant kinematic distributions, such as jet and Higgs pT spectra and findthat matched samples provide an accurate description of the final state. Forthe SM Higgs, we confirm the excellent accuracy of the large heavy-quark-massapproximation also in differential distributions over all phase space, withsignificant effects arising only at large pT . For a b-philic Higgs however,the loops have a dramatic impact on the kinematics of the Higgs as well as ofthe jets and need to be accounted for exactly to achieve reliable eventsimulations.

Matched predictions for Higgs production via heavy-quark loops in the SM and beyond