Higgs inflation with singlet scalar dark matter and right-handed
  neutrino in light of BICEP2
  We discuss the Higgs inflation scenario with singlet scalar dark matter and a
right-handed neutrino. The singlet scalar and the right-handed neutrino play
crucial roles for realizing a suitable plateau of Higgs potential with the
center value of the top mass of Tevatron and LHC measurements. This Higgs
inflation scenario predicts about a 1 TeV scalar dark matter and an
$\mathcal{O}(10^{14})$ GeV right-handed neutrino by use of 125.6 GeV Higgs
mass, 173.34 GeV top mass, and a nonminimal gravity coupling $\xi\simeq10.1$.
This inflation model is consistent with the recent result of the
tensor-to-scalar ratio $r=0.20_{-0.05}^{+0.07}$ by the BICEP2 Collaboration.
