CP-odd Higgs boson production in eγ collisions

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  • 植松, 恒夫
    Dept. of Physics, Faculty of Engineering, Yokohama National University
  • Uematsu, Tsuneo
    Institute for Liberal Arts and Sciences, Kyoto University・Maskawa Institute, Kyoto Sangyo University

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We investigate the CP-odd Higgs boson production via two-photon processes in eγ collisions. The CP-odd Higgs boson, which we denote as A°, is expected to appear in the Two-Higgs Doublet Models (2HDM) as a minimal extension of Higgs sector for which the Minimal Supersymmetric Standard Model (MSSM) is a special case. The scattering amplitude for eγ → eA° is evaluated at the electroweak one-loop level. The dominant contribution comes from top-quark loops when eA° boson is rather light and tan β is not large. There are no contributions from the W-boson and Z-boson loops nor the scalar top-quark (stop) loops. The differential cross section for the A° production is analyzed.

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