One-loop flavor change in Little Higgs models

Details One-loop flavor change in Little Higgs models One-loop flavor change in Little Higgs models

2010-07-21

arxiv.org/abs/1007.3573v2

Nucl.Phys.Proc.Suppl.205-206:158-163,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure; contribution to Loops and Legs in Quantum Field Theory, Woerlitz, Germany, April 25-30, 2010

Scientific paper

10.1016/j.nuclphysbps.2010.08.03

The Little Higgs (LH) idea attempts to cure the little amount of fine-tuning necessary to bridge the gap between the Higgs mass (electroweak scale) and the new physics scale suggested by electroweak precision tests (~10 TeV). However, we show that LH models do not survive the confrontation with experimental limits on lepton flavor mixing, assuming the same naturalness arguments that motivate their introduction. Two different LH models are analyzed and several aspects of their one-loop predictions for lepton flavor-changing processes are discussed.

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