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Isospin-violating dark-matter-nucleon scattering via two-Higgs-doublet-model portals

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arxiv 1510.07053 v3 pith:EISEI7OC submitted 2015-10-23 hep-ph astro-ph.CO

Aleksandra Drozd , Bohdan Grzadkowski , John F. Gunion , Yun Jiang This is my paper
classification hep-phastro-ph.CO
keywords dm-nucleonhiggsinteractionsmodelstatethenwhileadded
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We show that in a multi-Higgs model in which one Higgs fits the LHC 125 GeV state, one or more of the other Higgs bosons can mediate DM-nucleon interactions with maximal DM isospin violation being possible for appropriate Higgs-quark couplings, independent of the nature of DM. We then consider the explicit example of a Type II two-Higgs-doublet model, identifying the h or H as the 125 GeV state while the H or h, respectively, mediates DM-nucleon interactions. Finally, we show that if a stable scalar, S, is added then it can be a viable light DM candidate with correct relic density while obeying all direct and indirect detection limits.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Neutrino fog in the light dark sector: the role of isospin violation

    hep-ph 2025-08 unverdicted novelty 5.0 of 10

    In a U(1)' dark sector model, isospin-violating couplings shift both the neutrino floor and the DM exclusion bound, changing the window for light dark matter discovery.

  2. Shifting the neutrino fog: studying the Isospin-violating Dark Matter case

    hep-ph 2025-12 conditional novelty 4.0 of 10

    Isospin-violating dark matter shifts the neutrino fog: in xenon, a Z-portal model (f_n/f_p ≈ -22) lowers the discovery limit while the Scotogenic model (f_n/f_p = 0) raises it.

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