Determination of Littlest Higgs model parameters at the ILC

Details Determination of Littlest Higgs model parameters at the ILC Determination of Littlest Higgs model parameters at the ILC

2005-07-15

arxiv.org/abs/hep-ph/0507198v2

Phys.Rev.D72:115014,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 15 Postscript figures

Scientific paper

10.1103/PhysRevD.72.115014

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.

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