Summary and Outlook

This final chapter provides a summary of the key findings from the measurement results presented in this dissertation and their implications for the field of particle physics. It reflects on the progress made in measuring \({t\bar {t}}\) spin correlations as a precision test of the SM. The potential for future research by expanding scope of these measurements is considered. The dissertation concludes with an outlook on the future of \({t\bar {t}}\) spin correlation measurements at the anticipated HL-LHC with upgraded detector technology, as well as at proposed lepton colliders.