Determination of littlest Higgs model parameters at the International Linear Collider

John A. Conley, JoAnne Hewett, and My Phuong Le
Phys. Rev. D 72, 115014 – Published 22 December 2005

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+eff¯ at a s=500GeV 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 CERN 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+eZh for a significant region of the parameter space. This allows for confirmation of the structure of the cancellation of the Higgs mass quadratic divergence and would verify the little Higgs mechanism.

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  • Received 27 July 2005

DOI:https://doi.org/10.1103/PhysRevD.72.115014

©2005 American Physical Society

Authors & Affiliations

John A. Conley*, JoAnne Hewett, and My Phuong Le

  • Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309, USA

  • *Email address: conley@stanford.edu
  • Email address: hewett@slac.stanford.edu
  • Email address: myphle@stanford.edu

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Issue

Vol. 72, Iss. 11 — 1 December 2005

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