On the Higgs boson pair production at the LHC
Jonathan Grigo, Jens Hoff, Kirill Melnikov, Matthias Steinhauser

TL;DR
This paper calculates the Higgs boson pair production cross section at the LHC with next-to-leading order QCD corrections, including inverse top mass power corrections, revealing their significance for accurate phenomenology.
Contribution
It provides the first detailed calculation of power corrections up to ${ m O}(1/M_t^8)$ and shows how to improve convergence of the $1/M_t$ expansion for double Higgs production.
Findings
Power corrections are significant even at moderate energies.
Factorizing the LO cross section with full $M_t$ dependence improves convergence.
The results impact precise predictions for Higgs pair production.
Abstract
We compute the production cross section of a pair of Standard Model Higgs bosons at the LHC at next-to-leading order in QCD, including corrections in inverse powers of the top quark mass. We calculate these power corrections through and study their relevance for phenomenology of the double Higgs production. We find that power corrections are significant, even for moderate values of partonic center-of-mass energies, and that convergence of the expansion can be dramatically improved by factorizing the leading order cross section with full -dependence.
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