Standard-Model-like scenarios in the 2HDM and Photon Collider potential

Details Standard-Model-like scenarios in the 2HDM and Photon Collider potential Standard-Model-like scenarios in the 2HDM and Photon Collider potential

2001-01-30

arxiv.org/abs/hep-ph/0101331v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, aipproc, including figures. Presented at 5th International Linear Collider Workshop (LCWS 2000), Fermilab, Batavia, I

Scientific paper

10.1063/1.1394331

After operations at the LHC and e^+e^- Linear Colliders it may be found that a Standard-Model-like scenario is realized. In this scenario no new particle will be discovered, except a single Higgs boson having partial widths or coupling constants with fundamental particles, whose squares are close, within anticipated experimental uncertainty, to those of the SM. Experiments at a Photon Collider can resolve whether the SM or e.g. the Two-Higgs-Doublet Model is realized in Nature. For the SM-like realizations of the 2HDM (II) we study the loop couplings of the Higgs boson with \gamma\gamma and Z \gamma, and also with gluons. The deviation of the two-photon width from its SM value is generally higher than the expected inaccuracy in the measurement of \Gamma_{\gamma \gamma} at a Photon Collider. The deviation is sensitive to the parameters of the Higgs self interaction.

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