Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders

Details Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders Prospects of Measuring General Higgs Couplings at e^+e^- Linear Colliders

2000-02-03

arxiv.org/abs/hep-ph/0002043v1

Eur.Phys.J.C14:457-468,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages (LaTeX), 5 figures (axodraw and eps)

Scientific paper

10.1007/s100520000366

We examine how accurately the general HZV couplings, with V=Z,gamma, may be determined by studying e^+e^- --> Hff-bar processes at future e^+e^- linear colliders. By using the optimal-observable method, which makes use of all available experimental information, we find out which combinations of the various HZV coupling terms may be constrained most efficiently with high luminosity. We also assess the benefits of measuring the tau-lepton helicities, identifying the bottom-hadron charges, polarizing the electron beam and running at two different collider energies. The HZZ couplings are generally found to be well constrained, even without these options, while the HZ-gamma couplings are not. The constraints on the latter may be significantly improved by beam polarization.

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