One-loop corrections to the perturbative unitarity bounds in the CP-conserving two-Higgs doublet model with a softly broken ℤ 2 symmetry

Abstract

Abstract: We compute all of the one-loop corrections that are enhanced, O(λiλj/16π2), in the limit s ≫ |λi|v2 ≫ MW 2, s ≫ m12 2 to all the 2 → 2 longitudinal vector boson and Higgs boson scattering amplitudes in the CP -conserving two-Higgs doublet model with a softly broken ℤ 2 symmetry. In the two simplified scenarios we study, the typical bound we find is |λi(s)| ⪷ 4. © 2016, The Author(s).