Higgs-Pair Production via Gluon Fusion at Hadron Colliders: NLO QCD Corrections

Understand

Higgs-pair production via gluon fusion is the dominant production mechanism of Higgs-boson pairs at hadron colliders.

• In this work, we present details of our numerical determination of the full next-to-leading-order (NLO) QCD corrections to the leading top-quark loops.
• Since gluon fusion is a loop-induced process at leading order, the NLO calculation requires the calculation of massive two-loop diagrams with up to four different mass/energy scales involved.
• With the current methods, this can only be done numerically, if no approximations are used.