A Weakly Coupled Ultraviolet Completion of the Littlest Higgs with T-parity

Abstract

We construct a weakly coupled, renormalizable ultraviolet completion of the Littlest Higgs model with T-parity (LHT), based on an SU(5)xSU(2)xU(1) gauge theory with a discrete Z_2 symmetry. Our model reproduces the complete structure of the LHT below the 10 TeV scale, including the collective symmetry breaking mechanism which solves the little hierarchy problem. The model is manifestly free of anomalies, including both gauge/gravitational anomalies and anomalies involving T-parity. At the TeV scale, the model contains additional states not present in the LHT. We estimate the impact of these states on precision electroweak observables, and show that the model is realistic. We also discuss how our model can be embedded into a supersymmetric theory or a five-dimensional setup with a warped extra dimension, stabilyzing the hierarchy between the 10 TeV and the Planck scale.

arXiv commentv1: 30 pages, 4 figures v2: minor clarifications added and typos corrected

References in corpus (41)

• A Large Mass Hierarchy from a Small Extra Dimension
• Electric-Magnetic Duality in Supersymmetric Non-Abelian Gauge Theories
• Supergravity and a Confining Gauge Theory: Duality Cascades and $\chi$SB-Resolution of Naked Singularities
• The Minimal Composite Higgs Model
• Electroweak symmetry breaking from dimensional deconstruction
• The Littlest Higgs
• Little Higgs Review
• TeV Symmetry and the Little Hierarchy Problem
• Towards a Realistic Model of Higgsless Electroweak Symmetry Breaking
• Little Hierarchy, Little Higgses, and a Little Symmetry
• Little Higgs Models and Their Phenomenology
• Phenomenology of the Littlest Higgs with T-Parity
• Big Corrections from a Little Higgs
• T Parity and the Littlest Higgs
• Top Quarks and Electroweak Symmetry Breaking in Little Higgs Models
• Electroweak Precision Constraints on the Littlest Higgs Model with T Parity
• The Little Higgs from a Simple Group
• Rare and CP-Violating K and B Decays in the Littlest Higgs Model with T-Parity
• Little Higgs Dark Matter
• The Simplest Little Higgs
• Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms
• The flavor of a little Higgs with T-parity
• Anomalies on Orbifolds
• Collider Tests of the Little Higgs Model
• Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions
• Charged Lepton Flavour Violation and (g-2)_mu in the Littlest Higgs Model with T-Parity: a clear Distinction from Supersymmetry
• KK Parity in Warped Extra Dimension
• A Composite Little Higgs Model
• Could the Supersymmetric Higgs Particles Naturally be Pseudo-Goldstone Bosons?
• Flavour in supersymmetric Grand Unification: a democratic approach
• T-Parity Violation by Anomalies
• Cosmic Positron Signature from Dark Matter in the Littlest Higgs Model with T-parity
• Double protection of the Higgs potential
• The Super-little Higgs
• Particle-Antiparticle Mixing, epsilon_K, Delta Gamma_q, A_SL^q, A_CP(B_d -> psi K_S), A_CP(B_s -> psi phi) and B -> X_{s,d} gamma in the Littlest Higgs Model with T-Parity
• Collider Signature of T-quarks
• Naturally heavy superpartners and a Little Higgs
• The Littlest Higgs in Anti-de Sitter Space
• Indirect Detection of Little Higgs Dark Matter
• Anomalies in Fermionic UV Completions of Little Higgs Models
• Topological physics in the standard model and beyond

Cited by in corpus (26)

• Composite Higgses
• Physics at the e+ e- Linear Collider
• A Composite Twin Higgs Model
• Odd Top Partners at the LHC
• Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider
• A Little Higgs Model with Exact Dark Matter Parity
• SUSY without the Little Hierarchy
• D^0 -> gamma gamma and D^0 -> mu^+ mu^- Rates on an Unlikely Impact of the Littlest Higgs Model with T-Parity
• T-parity, its problems and their solution
• New theories for the Fermi scale
• Little composite dark matter
• Dissecting Multi-Photon Resonances at the Large Hadron Collider
• Broken electroweak phase at high temperature in the Littlest Higgs model with T-parity
• Precision Measurements of Little Higgs Parameters at the International Linear Collider
• Testing the CKM Picture of Flavour and CP Violation in Rare K and B Decays and Particle-Antiparticle Mixing
• Particle Physics at the LHC Start
• Tree-level Quartic for a Holographic Composite Higgs
• Electroweak Scattering at the Muon Shot
• Spontaneous CP Violation and Light Particles in The Littlest Higgs
• SU(3)/SU(2): the simplest Wess-Zumino-Witten term
• Dissecting new physics models through kinematic edges
• Operators in ultraviolet completions for collective symmetry breaking
• Concluding Talk: A Theorist Overview on Particle Physics
• A new and gauge-invariant Littlest Higgs model with T-parity
• Operators in ultraviolet completions for Electroweak collective symmetry breaking
• Mass ratio of W and Z bosons in SU(5) gauge-Higgs unification