Abstract
We compute the one-loop amplitude for a Higgs boson, a quark-antiquark pair and a pair of gluons of
negative helicity, i.e. for the next-to-maximally helicity violating (NMHV) case,
(H,1
−,2q+,3g−,4g−). The calculation is
performed using an effective Lagrangian which is valid in the limit of very large top quark mass. As a result of
this paper all amplitudes for the transition of a Higgs boson into 4 partons are now known analytically at one-loop
order.
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