The Littlest Higgs boson at a photon collider

Details The Littlest Higgs boson at a photon collider The Littlest Higgs boson at a photon collider

2004-05-09

arxiv.org/abs/hep-ph/0405072v3

Phys.Rev. D70 (2004) 115003

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages, 7 figures; v2: refs added, errors fixed in Eqs. 18, 20, A2-A4, A12, A15, numerics updated, Sec.VI added with expande

Scientific paper

10.1103/PhysRevD.70.115003

We calculate the corrections to the partial widths of the light Higgs boson in the Littlest Higgs model due to effects of the TeV-scale physics. We focus on the loop-induced Higgs coupling to photon pairs, which is especially sensitive to the effects of new particles running in the loop. This coupling can be probed with high precision at a photon collider in the process gamma gamma -> H -> b bbar for a light Higgs boson with mass 115 GeV <= MH <~ 140 GeV. Using future LHC measurements of the parameters of the Littlest Higgs model, one can calculate a prediction for this process, which will serve as a test of the model and as a probe for a strongly-coupled UV completion at the 10 TeV scale. We outline the prospects for measuring these parameters with sufficient precision to match the expected experimental uncertainty on gamma gamma -> H -> b bbar.

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