The 1-loop effects of the MSSM at the ILC are investigated through numerical analysis. We studied the higgs production processes e^-e^+ \to Zh and e^-e^+ \to \nu\bar\nu h at the ILC. It is found that the magnitude of the MSSM contribution through the 1-loop effects is sizable enough to be detected. In the study, three sets of the MSSM parameters are proposed, which are consistent with the observed higgs mass, the muon g-2, the dark matter abundance and the decay branching ratios of B mesons. In the e^-e^+ \to Zh process, the 1-loop effects of the MSSM are visible and the distinction of the parameter sets is partially possible. For the study of e^-e^+ \to \nu\bar\nu h, we used the equivalent W-boson approximation in the evaluation of the 1-loop cross section. While the 1-loop effect of the MSSM is visible, the distinction of the parameter sets might not be possible in this process under the value of realistic luminosity at the ILC.
Authors: Yusaku Kouda, Tadashi Kon, Yoshimasa Kurihara, Tadashi Ishikawa, Masato Jimbo, Kiyoshi Kato and Masaaki Kuroda
