One-Loop Corrections to the Perturbative Unitarity Bounds in the $CP$-Conserving Two-Higgs Doublet Model with a Softly Broken $\mathbb{Z}_2$ Symmetry

Benjam\'in Grinstein; Christopher W. Murphy; Patipan Uttayarat

One-Loop Corrections to the Perturbative Unitarity Bounds in the CP-Conserving Two-Higgs Doublet Model with a Softly Broken mathbb{Z}₂ Symmetry

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arxiv 1512.04567 v2 pith:7TSSV2G7 submitted 2015-12-14 hep-ph

One-Loop Corrections to the Perturbative Unitarity Bounds in the CP-Conserving Two-Higgs Doublet Model with a Softly Broken mathbb{Z}₂ Symmetry

Benjam\'in Grinstein , Christopher W. Murphy , Patipan Uttayarat This is my paper

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We compute all of the one-loop corrections that are enhanced, $O(\lambda_i \lambda_j / 16 \pi^2)$, in the limit $s \gg |\lambda_i | v^2 \gg M_{W}^2$, $s \gg m_{12}^2$ to all the $2 \to 2$ longitudinal vector boson and Higgs boson scattering amplitudes in the $CP$-conserving two-Higgs doublet model with a softly broken $\mathbb{Z}_2$ symmetry. In the two simplified scenarios we study, the typical bound we find is $|\lambda_i(s)| \lessapprox 4$.

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