Assessing uncertainties in the determination of the trilinear Higgs self-coupling from single-Higgs observables

Henning Bahl, Philip Bechtle, Johannes Braathen +4

Circular $e^{+}{e}^{-}$ colliders operating at energies below the di-Higgs production threshold can provide information on the trilinear Higgs self-coupling ${\lambda }_{hhh}$ via its loop co…