Determination of Littlest Higgs model parameters at the ILC

Abstract

We examine the effects of the extended gauge sector of the Littlest Higgs model in high energy e+e- collisions. We find that the search reach in e+e- -> f fbar at a 500 GeV center-of-mass energy International Linear Collider covers essentially the entire parameter region where the Littlest Higgs model is relevant to the gauge hierarchy problem. In addition, we show that this channel provides an accurate determination of the fundamental model parameters, to the precision of a few percent, provided that the LHC measures the mass of the heavy neutral gauge field. Additionally, we show that the couplings of the extra gauge bosons to the light Higgs can be observed from the process e+e- -> Z higgs for a significant region of the parameter space. This allows for confirmation of the structure of the cancelation of the Higgs mass quadratic divergence and would verify the little Higgs mechanism.

21 pages, 15 Postscript figures

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Cited by in corpus (22)

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• Physics at the e+ e- Linear Collider
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• Higgs boson pair production process $e^{+}{e}^{-}\to ZHH$ in the littlest Higgs model at the ILC
• Testing Little Higgs Mechanism at Future Colliders
• tbW vertex in the Littlest Higgs Model with T-parity
• W physics at the ILC with polarized beams as a probe of the Littlest Higgs Model
• The productions of the top-pions and top-Higgs associated with the charm quark at the hadron colliders
• The Higgs effective potential in the Littlest Higgs model at the one-loop level
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• Direct search limits on the Littlest Higgs model
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• Towards the effective potential of the Littlest Higgs model
• Physics at Future Linear Colliders