We study the indirect constraints on the quartic Higgs self-coupling that arise from double-Higgs production at future hadron colliders. To this purpose, we calculate the two-loop contributions to the gg → hh amplitudes that involve a modified h4 vertex. Based on our results, we estimate the reach of a pp collider operating at 27 TeV and 100 TeV centre-of-mass energy in constraining the cubic and quartic Higgs self-couplings by measurements of double-Higgs and triple-Higgs production in gluon-fusion.
Bizon, W., Haisch, U., Rottoli, L. (2019). Constraints on the quartic Higgs self-coupling from double-Higgs production at future hadron colliders. JOURNAL OF HIGH ENERGY PHYSICS, 2019(10) [10.1007/JHEP10(2019)267].
Constraints on the quartic Higgs self-coupling from double-Higgs production at future hadron colliders
Rottoli L.
2019
Abstract
We study the indirect constraints on the quartic Higgs self-coupling that arise from double-Higgs production at future hadron colliders. To this purpose, we calculate the two-loop contributions to the gg → hh amplitudes that involve a modified h4 vertex. Based on our results, we estimate the reach of a pp collider operating at 27 TeV and 100 TeV centre-of-mass energy in constraining the cubic and quartic Higgs self-couplings by measurements of double-Higgs and triple-Higgs production in gluon-fusion.
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