---
author:
- 'Julien Baglio,'
- 'Francisco Campanario,'
- 'Seraina Glaus,'
- 'Margarete Mühlleitner,'
- 'Jonathan Ronca,'
- Michael Spira
- and Juraj Streicher
bibliography:
- 'paper.bib'
title: 'Higgs-Pair Production via Gluon Fusion at Hadron Colliders: NLO QCD Corrections'
---

Introduction
============

Since the discovery of a scalar resonance [@Aad:2012tfa; @Chatrchyan:2012xdj] with a mass of $125.09\pm0.24$ GeV [@Khachatryan:2016vau] that is compatible with the Standard Model (SM) Higgs boson [@Higgs:1964ia; @Higgs:1964pj; @Higgs:1966ev; @Englert:1964et; @Guralnik:1964eu; @Kibble:1967sv], the detailed study of the properties of this particle has been a high priority of the analyses at the Large Hadron Collider (LHC). Theoretical uncertainties are a limiting factor for the accuracies reachable at the LHC. This restriction can partly be compensated by increasing the diversity of processes involving the Higgs boson and a broader spectrum of Higgs couplings probed at the LHC. In order to test the nature of the Higgs boson, its self-interactions are of particular interest. It will be the first step towards an experimental reconstruction of the Higgs potential. This plays a crucial role as the origin of electroweak symmetry breaking within the SM. The initial processes that provide a direct sensitivity to the Higgs self-couplings are Higgs-pair production processes. They involve 