Speaker
Hiroyuki Furusato
(Iwate University)
Description
We study the process $l^−l^+→ν\bar{ν}Zh$, whose cross section exceeds that of $l^−l^+→Zh$ above the TeV scale. The amplitudes are classified into three topologies: vector boson scattering (VBS), $W^−l^+$ scattering, and $l^−W^+$ scattering. We analyze their interference patterns and show that the gauge cancellation observed in the unitary gauge at high energies does not appear in the recently proposed Feynman-diagram gauge, enabling a clearer interpretation of each subgroup’s contribution. We further demonstrate that suitable kinematical cuts enhance the VBS component, which directly probes the Higgs couplings to both W and Z bosons.
Author
Hiroyuki Furusato
(Iwate University)
