Natural Two-Higgs-Doublet Model

Abstract

We show that the Two-Higgs-Doublet Model (2HDM) constrained by the two-loop-order requirement of cancellation of quadratic divergences is consistent with the existing experimental constraints. The model allows to ameliorate the little hierarchy problem by suppressing the quadratic corrections to scalar masses and lifting the mass of the lightest Higgs boson. A strong source of CP violation emerges from the scalar potential. The cutoff originating from the naturality arguments is shifted from 0.6 TeV in the Standard Model to >6 TeV in the 2HDM, depending on the mass of the lightest scalar.

2 figures, submitted to Fortschritte der Physik, presented at the 10th Hellenic School on Elementary Particle Physics and Gravity, Corfu 2010

References in corpus (2)

• Constraining the Two-Higgs-Doublet-Model parameter space
• Natural Multi-Higgs Model with Dark Matter and CP Violation

Cited by in corpus (6)

• Global fits of the two-loop renormalized Two-Higgs-Doublet model with soft $Z_2$ breaking
• Implication of Quadratic Divergences Cancellation in the Two Higgs Doublet Model
• Naturalness in a simple two Higgs doublet model
• A soft origin for CKM-type CP violation
• RGE and the Fine-Tuning Problem
• The Z2 Two Higgs Doublet Model and the hierarchy problem