PoS - Proceedings of Science
Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Beyond the Standard Model
The absolute maximum and detailed phenomenology of the muon magnetic moment in the 2HDM
H. Stoeckinger-Kim*, A. Cherchiglia and D. Stöckinger
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Published on: August 02, 2019
We present the muon magnetic moment $g-2$ in the flavour-aligned 2HDM evaluated by employing the recent result of full two-loop computation and making comprehensive use of experimental constraints from Higgs and flavour physics and characterize the parameter regions possible to explain the current $3\sigma$ deviation.
We particularly focus on the light CP-odd neutral Higgs boson $A$ and present the maximum possible Yukawa couplings to leptons and quarks of a light $A$ allowed by the LHC and $B$--physics results, which can enhance $a _\mu ^{\text{2HDM}}$ in this mass region.
As a result we find an overall maximum of $45 \times 10^{−10}$ for $a _\mu ^{\text{2HDM}}$ in the parameter region $20 < M_A < 100$ GeV.
DOI: https://doi.org/10.22323/1.340.0517
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