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Higgs alignment from extended supersymmetry.

Karim Benakli1, Mark D Goodsell1, Sophie L Williamson1

  • 1Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université et CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France.

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Dirac gaugino models with extended supersymmetry offer automatic alignment in two-Higgs doublet models. Quantum corrections and higher scales improve this alignment, with implications for superpartner scales.

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Area of Science:

  • Particle Physics
  • Supersymmetry
  • Higgs Physics

Background:

  • Investigating extensions to the Standard Model, specifically Supersymmetric (SUSY) theories.
  • Exploring the Type-II Two-Higgs Doublet Model (2HDM) and its connection to Dirac gaugino models.
  • Understanding the alignment mechanism in supersymmetric models is crucial for theoretical consistency and experimental predictions.

Purpose of the Study:

  • To analyze the effective Type-II 2HDM arising from Dirac gaugino models with extended supersymmetry.
  • To investigate how raising the supersymmetry scale and incorporating quantum corrections affect model alignment.
  • To constrain the scale of superpartners using Higgs mass and other experimental data within this framework.

Main Methods:

  • Employing an effective field theory (EFT) approach.
  • Including new threshold corrections and two-loop Renormalization Group Equations (RGEs).
  • Calculating two-loop corrections to the Higgs mass in the low-energy theory.

Main Results:

  • Demonstrating that extended supersymmetry in Dirac gaugino models leads to automatic alignment in the Type-II 2HDM.
  • Showing that increasing the scale of manifest supersymmetry and including quantum corrections enhance this alignment.
  • Constraining the superpartner scale through Higgs mass measurements and experimental data.

Conclusions:

  • The studied Dirac gaugino models provide an automatically aligned 2HDM, unlike the hMSSM and MRSSM.
  • Quantum corrections and higher scales are beneficial for achieving better alignment in these models.
  • The framework offers a new perspective on SUSY model building and phenomenological studies.