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We consider the multiple point principle of the Standard Model with scalar singlet dark matter (DM) and three heavy right-handed neutrinos at the scale where the beta function βλ of the effective
Higgs self-coupling λeff becomes zero.We do a two-loop analysis and find that the top quark mass Mt and theHiggs portal coupling κ are strongly related to each other. One of the good points of this model is that a larger Mt (171 GeV) is allowed. This fact is consistent with the recent experimental value Mt = 173.34 ± 0.76 GeV [ATLAS, CDF, CMS, and D0 Collaborations, arXiv:1403.4427 [hep-ex]], which corresponds to the DM mass 769 GeV ≤ mDM ≤ 1053 GeV.
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