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- Title
Constraints on the trilinear and quartic Higgs couplings from triple Higgs production at the LHC and beyond.
- Authors
Stylianou, Panagiotis; Weiglein, Georg
- Abstract
Experimental information on the trilinear Higgs boson self-coupling κ 3 and the quartic self-coupling κ 4 will be crucial for gaining insight into the shape of the Higgs potential and the nature of the electroweak phase transition. While Higgs pair production processes provide access to κ 3 , triple Higgs production processes, despite their small cross sections, will provide valuable complementary information on κ 3 and first experimental constraints on κ 4 . We investigate triple Higgs boson production at the HL-LHC, employing efficient Graph Neural Network methodologies to maximise the statistical yield. We show that it will be possible to establish bounds on the variation of both couplings from the HL-LHC analyses that significantly go beyond the constraints from perturbative unitarity. We also discuss the prospects for the analysis of triple Higgs production at future high-energy lepton colliders operating at the TeV scale.
- Subjects
HIGGS bosons; GRAPH neural networks; ELECTROWEAK interactions; PHASE transitions; PAIR production; MANUFACTURING processes
- Publication
European Physical Journal C -- Particles & Fields, 2024, Vol 84, Issue 4, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-024-12722-9