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arXiv · hep-ph/9608321

Constraining 2HDM by Present and Future Muon(g-2) Data

Maria Krawczyk·Jan Zochowski
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Abstract

Constraints on the general 2HDM ("Model II") are obtained from the existing $(g-2)_μ$ data including limits on Higgs bosons masses from LEP I data. We consider separately two cases: with a light scalar $h$ and with a light pseudoscalar $A$, assuming ${M_{h}+M_{A}} \ge {M_{Z}}$. The charged Higgs contribution is also included. It is found that already the present $(g-2)_μ$ data improve limits obtained recently by ALEPH collaboration on $\tb$ for the mass of the pseudoscalar below $ \mr$ 2 GeV. The improvement in the accuracy by factor 20 in the forthcoming E821 experiment may lead to more stringent, than provided by ALEPH group, limits up to $M_A\sim$ 30 GeV if the mass difference between $h$ and $A$ is $\sim M_Z$. Similar results should hold for a light scalar scenario as well.

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Maria Krawczyk, Jan Zochowski. 1996-08-14. Constraining 2HDM by Present and Future Muon(g-2) Data. https://doi.org/10.1103/physrevd.55.6968

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