Probing Neutral Triple Gauge Couplings via $\mathbf{Z\gamma }({\mathbf{\ell }}^{+}{\mathbf{\ell }}^{-}\mathbf{\gamma })$ Production at ${\mathbf{e}}^{+}{\mathbf{e}}^{-}$ Colliders

Danning Liu, Rui-Qing Xiao, Shu Li +3

Neutral triple gauge couplings (nTGCs) are absent in the Standard Model (SM) and at the dimension-6 level in the Standard Model Effective Field Theory (SMEFT), arising first from d…