Abstract
We investigate the CP-odd Higgs boson production via two-photon processes in eγ collisions. The CP-odd Higgs boson, which we denote as A0, 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→eA0 is evaluated at the electroweak one-loop level. The dominant contribution comes from top-quark loops when A0 boson is rather light and tanβ 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 A0 production is analyzed.
Highlights
After the Higgs boson with mass about 125 GeV was discovered by ATLAS and CMS at LHC [1] and its spin, parity and couplings were examined [2], there has been growing interest in constructing a new accelerator facility, like a linear e + e − collider [3], which would offer much cleaner experimental data
The e − γ and γ γ options are based on e − e − collisions, where one or two of the electron beams are converted to the photon beams
In this paper we investigate the production of the CP-odd Higgs boson ( A 0 ), which appears in the 2HDM or in the Minimal Supersymmetric Standard Model (MSSM) [11], in an
Summary
After the Higgs boson with mass about 125 GeV was discovered by ATLAS and CMS at LHC [1] and its spin, parity and couplings were examined [2], there has been growing interest in constructing a new accelerator facility, like a linear e + e − collider [3], which would offer much cleaner experimental data. In our previous papers [9,10], we have studied the SM Higgs boson (H SM ) production in e γ collisions, focusing on the transition form factor of H SM boson [9] and on the dependence of polarizations of the initial electron and photon beams [10]. In this paper we investigate the production of the CP-odd Higgs boson ( A 0 ), which appears in the 2HDM or in the MSSM [11], in an. We investigate the Q 2 dependence of the transition form factor and the production cross section. The scalar top-quark (stop) does not contribute to the A 0 production in e γ collisions at one-loop level
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