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We show that in a multi-Higgs model in which one Higgs fits the LHC 125 GeVstate, one or more of the other Higgs bosons can mediate DM-nucleoninteractions with maximal DM isospin violation being possible for appropriateHiggs-quark couplings, independent of the nature of DM. We then consider theexplicit example of a Type II two-Higgs-doublet model, identifying the h or Has the 125 GeV state while the H or h, respectively, mediates DM-nucleoninteractions. Finally, we show that if a stable scalar, S, is added then it canbe a viable light DM candidate with correct relic density while obeying alldirect and indirect detection limits.

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