T-parity, its problems and their solution

Abstract

We point out a basic difficulty in the construction of little-Higgs models with T-parity which is overlooked by large part of the present literature. Almost all models proposed so far fail to achieve their goal: they either suffer from sizable electroweak corrections or from a breakdown of collective breaking. We provide a model building recipe to bypass the above problem and apply it to build the simplest T-invariant extension of the Littlest Higgs. Our model predicts additional T-odd pseudo-Goldstone bosons with weak scale masses.

25 pages, 2 appendices

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• Physics at the e+ e- Linear Collider
• On the production of a composite Higgs boson
• Littlest Higgs with T-parity: Status and Prospects
• Precision Higgs Measurements: Constraints from New Oblique Corrections
• The Natural Composite Higgs
• D^0 -> gamma gamma and D^0 -> mu^+ mu^- Rates on an Unlikely Impact of the Littlest Higgs Model with T-Parity
• Little composite dark matter
• UV friendly T-parity in the SU(6)/Sp(6) little Higgs model
• Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity
• The Full Lepton Flavor of the Littlest Higgs Model with T-parity
• Vector-like quarks with a scalar triplet
• Darkening the Little Higgs
• Dangerous Skyrmions in Little Higgs Models
• Composite Higgs Models with a Hidden Sector
• Phenomenological implications of the new Littlest Higgs model with T-parity
• A new and gauge-invariant Littlest Higgs model with T-parity