4–8 Nov 2024
Uppsala University Main Building
Europe/Stockholm timezone

The Higgs Self-coupling Strategy at Linear e+e- Colliders

6 Nov 2024, 14:10
20m
Uppsala University Main Building

Uppsala University Main Building

Biskopsgatan 3 75310 Uppsala Sweden
Higgs physics at future colliders Common session: HH & future colliders 1 - sal IV

Speaker

Dr Junping Tian (University of Tokyo (JP))

Description

Measuring the Higgs self-coupling is a key target for future colliders, in particular through di-Higgs production at e+e- Linear Colliders with GeV, e.g. at ILC, C3 or CLIC. This contribution will discuss the roles and the interplay of di-Higgs production processes at various collider energies, including the case of non-SM values of the self-coupling. Previous studies, already based on Geant4-based detector simulation, established that the Higgs self-coupling can be extracted with 10-27% precision and provided a solid understanding of the limiting factors. This provides a robust starting point to explore the potential of more modern and sophisticated reconstruction and analysis techniques. We review the impact of advanced, often machine-learning-based algorithms, including e.g. jet clustering, kinematic fitting and matrix element-inferred likelihoods on the reconstruction of ZHH events, and offer an outlook on what can be expected for the self-coupling measurement.

Primary track Higgs physics at future colliders
Is the speaker a PhD student or post-doc? Yes - I need some financial support (fee reduction) to attend Higgs 2024

Authors

Bryan Bliewert (Deutsches Elektronen-Synchrotron (DE)) Caterina Vernieri (SLAC National Accelerator Laboratory (US)) Dimitris Ntounis (SLAC National Accelerator Laboratory (US)) Jenny List (Deutsches Elektronen-Synchrotron (DE)) Julie Munch Torndal (Deutsches Elektronen-Synchrotron (DE)) Dr Junping Tian (University of Tokyo (JP))

Presentation materials