Update of the Higgs Self-coupling Projections from Di-Higgs Production in Detailed Simulation of the ILD Concept

2025/09/17 by M. Berggren, Bryan Bliewert, Berggren, Mikael +13
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle physics theoretical and experimental studies

paper · doi:10.48550/arxiv.2509.14148

openalex publication_date 2025/09/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This contribution summarizes the update of the projections for the determination of the tri-linear Higgs self-coupling from di-Higgs production at future e⁺e^- colliders. In particular, we will present an update of the analysis of ZHH production at 500 GeV in detailed simulations of the ILD concept, covering the HH→ bbbb and Z→ qq / e⁺e^- / μ⁺μ^- /νν channels. Based on the experience of previous analyses, we will extrapolate these to contain some of the remaining decay modes, e.g. HH→ bb WW^* or Z→ τ⁺τ^-, as well as the contribution from the WW fusion production mode. We will study the dependency of the results on the centre-of-mass energy (in particular discussing 550 GeV and 1 TeV) as well as on the value of the trilinear coupling realised in nature.

Citations

• Impact of one-loop corrections to trilinear scalar couplings on di-Higgs production in the RxSM
• Experimental Determination of BSM Triple Higgs Couplings at the HL-LHC with Neural Networks
• ECFA Higgs, electroweak, and top Factory Study
• The ILD Detector: A Versatile Detector for an Electron-Positron Collider at Energies up to 1 TeV
• Large One-Loop Effects of BSM Triple Higgs Couplings on Double Higgs Production at e⁺e^- Colliders
• Highlights of the HL-LHC physics projections by ATLAS and CMS
• The Linear Collider Facility (LCF) at CERN
• A Linear Collider Vision for the Future of Particle Physics
• Sensitivity to Triple Higgs Couplings via Di-Higgs Production in the RxSM at the (HL-)LHC and future e⁺e^- Colliders
• One-to-one correspondence reconstruction at the electron-positron Higgs factory
• Application of Particle Transformer to quark flavor tagging in the ILC project
• Higgs Pair Production in the 2HDM: Impact of Loop Corrections to the Trilinear Higgs Couplings and Interference Effects on Experimental Limits
• CPID: A Comprehensive Particle Identification Framework for Future e⁺e^- Colliders
• Strategy for Understanding the Higgs Physics: The Cool Copper Collider
• Kinematic Fitting for Particle Flow Detectors at Future Higgs Factories
• The International Linear Collider Technical Design Report - Volume 1: Executive Summary
• SGV 3.0 - a fast detector simulation
• FastJet: a code for fast k_t clustering, and more
• THE PHOTON COLLIDER AT TESLA

Related

• Towards an update of the ILD ZHH analysis
• Study of Higgs Self-coupling at ILC
• Influence of anomalous VVH and VVHH on determination of Higgs self couplings at ILC
• Studying the Higgs Potential via e⁺e^- → Zhh
• Higgs Self-coupling Strategy at Linear e⁺e^- Colliders