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arXiv · 2606.13406

Decays of heavy scalars in the Grimus-Neufeld model

Aurimas Vitkus·Simonas Draukšas·Thomas Gajdosik
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Abstract

We consider an extension of the Standard Model by an additional Higgs doublet and a Majorana neutrino, which we call the Grimus-Neufeld Model (GNM). For certain parameter choices the GNM can be compared to the Inert Doublet Model (IDM), which has a scalar dark matter candidate. This motivates that the scalars of the GNM could possibly contribute to dark matter. To check this, we present the tree-level two-body decays of the heavy scalars of the GNM and compute the lifetime of the pseudoscalar in the IDM limit.

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Aurimas Vitkus, Simonas Draukšas, Thomas Gajdosik. 2026-06-11. Decays of heavy scalars in the Grimus-Neufeld model. https://doi.org/10.3390/universe12070206

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