Speaker
Description
We investigate Higgs-gauge boson interactions using effective field theory approaches at both hadron and lepton collider frontiers. At the HL-LHC, we analyze the $Zh$ associated production mode by incorporating Higgs-gauge coupling modifiers in the $\kappa$ framework and dimension 6 SMEFT operators involving Higgs-current and dipole structures. Machine learning techniques are employed to enhance sensitivity to these interactions, highlighting their growing relevance in probing high-energy effects. Complementarily, we study $hVV$ $(V=Z,\gamma,W)$ couplings at future $e^{+}e^{-}$ colliders with $\sqrt{s} = 250$ GeV, using optimal observable and spin-asymmetry techniques to constrain both CP-even and CP-odd operators through using Higgs decay modes: $b\overline{b}$, $WW^{*}$, and $ZZ^{*}$. Together, these studies illustrate how precision measurements at lepton colliders, in synergy with LHC analyses, can substantially sharpen constraints on anomalous Higgs-gauge interactions and reveal potential imprints of new physics.