Measuring the Higgs Boson Self-coupling at High Energy e^+e^- Colliders

Understand

Standard Model Higgs pair production at e^+e^- colliders has the capability to determine the Higgs boson self-coupling \lambda.

• I present a detailed analysis of the e^+e^- -> ZHH and e^+e^- -> \nu\bar\nu HH signal channels, and the relevant background processes, for future e^+e^- linear colliders with center of mass energies of \sqrt{s}=0.5 TeV, 1 TeV, and 3 TeV.
• Special attention is given to the role non-resonant Feynman diagrams play, and the theoretical uncertainties of signal and background cross sections.
• I also derive quantitative sensitivity limits for \lambda.