Radiative Corrections to Scalar Masses and Mixing in a Scale Invariant Two Higgs Doublet Model
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We study the Higgs-boson mass spectrum of a classical scale-invariant realization of the two-Higgs-doublet model (SI-2HDM). The classical scale symmetry of the theory is explicitly broken by quantum loop effects due to gauge interactions, Higgs self-couplings and top-quark Yukawa couplings. We determine the allowed parameter space compatible with perturbative unitarity and electroweak precision data. Taking into account the LEP and the recent LHC exclusion limits on a Standard-Model-like Higgs boson H_SM, we obtain rather strict constraints on the mass spectrum of the heavy Higgs sector of the SI-2HDM. In particular, if M_{H_SM} \sim 125 GeV, the SI-2HDM strongly favours scenarios, in which at least one of the non-standard neutral Higgs bosons has a mass close to 400 GeV and is generically degenerate with the charged Higgs boson, whilst the third neutral Higgs scalar is lighter than ~ 500 GeV.
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Cited by 3 Pith papers
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Revisiting the Higgs-mass calculation in the scale-invariant THDM
One-loop Feynman-diagram corrections in the scale-invariant THDM shift BSM Higgs masses by O(10%) and induce non-negligible neutral-scalar mixing, contrary to earlier effective-potential calculations.
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Renormalisation Group Invariants from Scaling and Non-overlapping Symmetries
A spurion-field formalism uses scaling and non-overlapping symmetries to construct RGIs for bilinear operators in scalar potentials to all loops, demonstrated in non-SUSY models and the 2HDM.
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Renormalisation Group Invariants from Scaling and Non-overlapping Symmetries
A spurion-field approach using scale-invariant directions and non-overlapping symmetries constructs all-loop RGIs for bilinear operators in multi-scalar potentials.
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