Potential of Photon Collider in resolving SM-like scenarios

Details Potential of Photon Collider in resolving SM-like scenarios Potential of Photon Collider in resolving SM-like scenarios

2001-01-20

arxiv.org/abs/hep-ph/0101229v1

Nucl.Instrum.Meth. A472 (2001) 149-154

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, with figures

Scientific paper

10.1016/S0168-9002(01)01174-3

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 squared with fundamental particles close, within anticipated experimental uncertainty, to those of the SM. Experiments at a Photon Collider can resolve whether the SM model or e.g. the Two Higgs Doublet Model is realized in Nature. For the SM-like version 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 result is sensitive to the parameters of the Higgs self interaction.

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