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Virtual corrections to Higgs boson pair production in the large top quark mass limit (1408.2422v1)

Published 11 Aug 2014 in hep-ph

Abstract: We calculate the three-loop matching coefficient $C_{HH}$, required for a consistent description of Higgs boson pair production in gluon fusion through next-to-next-to-leading order QCD in the heavy top quark approximation. We also compute the $gg \to HH$ amplitude in $m_t \to \infty$ approximation in the full theory and show its consistency with an earlier computation in heavy-top effective theory.

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