The Low-Energy Structure of Little Higgs Models

Abstract

The mechanism of electroweak symmetry breaking in Little Higgs Models is analyzed in an effective field theory approach. This enables us to identify observable effects irrespective of the specific structure and content of the heavy degrees of freedom. We parameterize these effects in a common operator basis and present the complete set of anomalous contributions to gauge-boson, Higgs, and fermion couplings. If the hypercharge assignments of the model retain their standard form, electroweak precision data are affected only via the S and T parameters and by contact interactions. As a proof of principle, we apply this formalism to the minimal model and consider the current constraints on the parameter space. Finally, we show how the interplay of measurements at LHC and a Linear Collider could reveal the structure of these models.

RevTex, 21 pages, 1 figure. Changes in v.2: Discussion of generic hypercharge assignments, improved discussion of oblique parameters

References in corpus (31)

• Electroweak symmetry breaking from dimensional deconstruction
• The Littlest Higgs
• The Minimal Moose for a Little Higgs
• Phenomenology of the Little Higgs Model
• TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
• Patterns of Deviation from the Standard Model
• Little Higgses from an Antisymmetric Condensate
• Big Corrections from a Little Higgs
• Top Quarks and Electroweak Symmetry Breaking in Little Higgs Models
• Variations of Little Higgs Models and their Electroweak Constraints
• The Little Higgs from a Simple Group
• Probing the Higgs self-coupling at hadron colliders using rare decays
• Constraining the Littlest Higgs
• One-loop Radiative Corrections to the rho Parameter in the Littlest Higgs Model
• Phenomenology of Electroweak Symmetry Breaking from Theory Space
• A "Littlest Higgs" Model with Custodial SU(2) Symmetry
• Measuring the Higgs Boson Self Coupling at the LHC and Finite Top Mass Matrix Elements
• Determining the Higgs Boson Self Coupling at Hadron Colliders
• Little Higgs and Custodial SU(2)
• Testing Higgs Self-couplings at e^+e^- Linear Colliders
• Effects of genuine dimension-six Higgs operators
• A Simple Model of two Little Higgses
• What Precision Electroweak Physics Says About the SU(6)/Sp(6) Little Higgs
• Collider Tests of the Little Higgs Model
• Examining the Higgs boson potential at lepton and hadron colliders: a comparative analysis
• Little Higgs Models and Precision Electroweak Data
• Constraints on Electron-quark Contact Interactions and Implications to models of leptoquarks and Extra Z Bosons
• Anomalous couplings in the Higgs-strahlung process
• Flavor Physics and Fine-Tuning in Theory Space
• Natural and model-independent conditions for evading the limits on the scale of new physics
• Discovery and Identification of W' Bosons in e gamma to nu q +X

Cited by in corpus (139)

• The Muon g-2
• WHIZARD: Simulating Multi-Particle Processes at LHC and ILC
• Little Higgs Review
• The Standard Model as an Effective Field Theory
• Little Hierarchy, Little Higgses, and a Little Symmetry
• Little Higgs Models and Their Phenomenology
• T Parity and the Littlest Higgs
• Rare and CP-Violating K and B Decays in the Littlest Higgs Model with T-Parity
• The Simplest Little Higgs
• Top Partners in Little Higgs Theories with T-parity
• Higgs Boson Production and Decay in Little Higgs Models with T-parity
• 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
• Little-Higgs corrections to precision data after LEP2
• The Intermediate Higgs
• Waiting for Precise Measurements of K^+->pi^+ nu nu and K_L->pi^0 nu nu
• A Composite Little Higgs Model
• Precise limits from lepton flavour violating processes on the Littlest Higgs model with T-parity
• Hunting for the Top Partner in the Littlest Higgs Model with T-parity at the LHC
• Testing neutrino masses in little Higgs models via discovery of doubly charged Higgs at LHC
• Rare K and B Decays in the Littlest Higgs Model without T-Parity
• High-Energy Vector Boson Scattering after the Higgs Discovery
• Scheming in the SMEFT... and a reparameterization invariance!
• Cosmic Positron Signature from Dark Matter in the Littlest Higgs Model with T-parity
• Standard Model EFT and Extended Scalar Sectors
• Pseudo-axions in Little Higgs models
• Neutrino masses and lepton-number violation in the Littlest Higgs scenario
• Models of Little Higgs and Electroweak Precision Tests
• Lepton flavour violation in The Little Higgs model
• Higgs Triplets and Limits from Precision Measurements
• Little Higgs Models and Electroweak Measurements
• Higgs-pair Production in Littlest Higgs Model with T-parity
• Alternatives to an Elementary Higgs
• Littlest Higgs with T-parity: Status and Prospects
• Phenomenology of Mirror Fermions in the Littlest Higgs Model with T-Parity
• 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
• Particle-Antiparticle Mixing, ε_K and the Unitarity Triangle in the Littlest Higgs Model
• Determination of New Electroweak Parameters at the ILC - Sensitivity to New Physics
• On the consistent use of Constructed Observables
• Top Partners and Higgs Boson Production
• Transversal Modes and Higgs Bosons in Electroweak Vector-Boson Scattering at the LHC
• $B_d-{\bar{B}}_d$ mass difference in Little Higgs model
• Distinguishing Little-Higgs Product and Simple Group models at the LHC and ILC
• Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider
• The Littlest Higgs boson at a photon collider
• Impact of Single-Top Measurement to Littlest Higgs Model with T-Parity
• Top Partner Discovery in the $T\to tZ$ channel at the LHC
• Optimal search reach for heavy neutral leptons at a muon collider
• Resonances at the LHC beyond the Higgs: The Scalar/Tensor Case
• LHC signals of T-odd heavy quarks in the Littlest Higgs model
• Flavour Physics and CP Violation
• T-Anomaly Induced LHC Signals
• Light pseudoscalar eta and H->eta eta decay in the simplest little Higgs mode
• Rompimiento de la Simetria Electrodebil y la Fisica del Higgs: Conceptos Basicos
• Signatures of Extra Gauge Bosons in the Littlest Higgs Model with T-parity at Future Colliders
• Flavor-Changing Top Quark Rare Decays in the Littlest Higgs Model with T-Parity
• Invisible Higgs boson decay in the littlest Higgs model with T-parity
• Production of htt_bar and htT_bar in littlest Higgs model with T-parity
• Determination of Littlest Higgs model parameters at the ILC
• $H\to \ell {\ell }^{\prime }$ in the Simplest Little Higgs Model
• Higgs and Z-boson FCNC decays correlated with B-meson decays in littlest Higgs model with T-parity
• Exotic Top Partners and Little Higgs
• Higgs boson decays and production via gluon fusion at LHC in littlest Higgs models with T-parity
• Higgs boson productions at LHC as a probe of different littlest Higgs models with T-parity
• Top quark FCNC decays and productions at LHC in littlest Higgs model with T-parity
• In search of an unbiased temperature estimator for statistically poor X-ray spectra
• Dark matter in little Higgs model under current experimental constraints from LHC, Planck and Xenon
• T-parity, its problems and their solution
• Bounds on the Simplest Little Higgs Model Mass Spectrum Through Z Leptonic Decay
• Distinguishing the Littlest Higgs model with T-parity from supersymmetry at the LHC using trileptons
• Anomalous gtt couplings in the Littlest Higgs Model with T-parity
• Lepton number violation in Little Higgs model
• Little composite dark matter
• The Study of the contribution of the LHT model to $Zb\bar{b}$ coupling
• Lepton flavor violating signals of a little Higgs model at the high energy linear $e^{+}{e}^{-}$ colliders
• Probing the gauge bosons $Z^{\prime }$ and $B^{\prime }$ from the Littlest Higgs model in the high-energy linear $e^{+}{e}^{-}$ colliders
• Single production of the doubly charged scalar in the littlest Higgs model
• The littlest Higgs is a cruiserweight
• The effects of the little Higgs models on $t\bar{t}{h}^0$ production via $\gamma \gamma$ collision at linear colliders
• Associated production of a single heavy T-quark in the littlest and simplest little Higgs models
• Muon to electron conversion in the Littlest Higgs model with T-parity
• Effects of the littlest Higgs model with T-parity on Higgs boson production at high energy $e^{+}{e}^{-}$ colliders
• Precision Measurements of Little Higgs Parameters at the International Linear Collider
• Pair production of the heavy leptons in future high energy linear e^{+}e^{-} colliders
• Associated production of the Higgs boson and a single top quark in the littlest Higgs model at Large Hadron Collier
• Higgs boson pair production process $e^{+}{e}^{-}\to ZHH$ in the littlest Higgs model at the ILC
• The fate of the Littlest Higgs Model with T-parity under 13 TeV LHC Data
• Little Higgs Model Limits from LHC - Input for Snowmass 2013
• Z' boson mass reach and model discrimination at muon colliders
• $W_H/Z_H$ production associated with a T-odd (anti)quark at the LHC in NLO QCD
• tbW vertex in the Littlest Higgs Model with T-parity
• Pair production of charged scalars and lepton flavor violating signals in the littlest Higgs model at $e^{+}{e}^{-}$ colliders
• T-parity odd heavy leptons at LHC
• The littlest Higgs model and Higgs boson associated production with top quark pair at high energy linear $e^{+}{e}^{-}$ collider
• Search for the vector-like top quark $T$ at the future linac-ring type $ep$ collider
• $Z_L$ associated pair production of charged Higgs bosons in the littlest Higgs model at $e^{+}{e}^{-}$ colliders
• Flavor changing top quark decay and bottom-strange production in the littlest Higgs model with T-parity
• Little Higgs model effects at $\gamma \gamma$ collider
• The Higgs effective potential in the Littlest Higgs model at the one-loop level
• Probing lepton flavor violation signal via e+ e- (gamma gamma) ---> l(i) anti-l(j) in the littlest Higgs model with T-parity at the ILC
• The impossibility of heavy neutrino dark matter in the Littlest Higgs Model with T-parity: constraints from direct search
• Direct search limits on the Littlest Higgs model
• Charged Higgs Production in Association With W^{\pm} at Large Hadron Colliders
• One-loop effects on top pair production in the littlest Higgs model with T-parity at the LHC
• Radiative decays Z_H-> V_i Z (V_i=γ, Z) in little Higgs models
• Radiative corrections to the Higgs potential in the LH model
• Single production of charged gauge bosons from little Higgs models in association with top quark at the $LHC$
• Neutrino mass and lepton number violation in the Little Higgs model
• Testing the Littlest Higgs Model with T-parity in Bottom Quark Pair Production at High Energy Photon Colliders
• On-shell $WW\gamma$ vertex in the T-Parity and non T-Parity Littlest Higgs model
• Associated production of the scalars and new gauge bosons from a little Higgs model at the LHC
• Probing the lightest new gauge boson $B_H$ in the littlest Higgs model via the processes $\gamma \gamma \to f\bar{f}{B}_H$ at the ILC
• Top quark pair production via $e^{+}{e}^{-}$ collision in the littlest Higgs model with T-parity at the ILC
• On the electroweak symmetry breaking in the Littlest Higgs model
• Neutrinos in the Simplest Little Higgs Model
• Production of mirror fermions via $e\gamma$ and $ep$ collisions in the littlest Higgs model with T-parity
• R_b Constraints on Littlest Higgs Model with T-parity
• Probing the littlest Higgs model with $T$ parity using di-Higgs events through $Z_H$-pair production at the LHC in NLO QCD
• Axion and PVLAS data in a Little Higgs model
• Probing Little Higgs Model in e+ e- --> nu nubar gamma Process
• Decays of the Littlest Higgs Z_H and the Onset of Strong Dynamics
• Little Higgs and precision electroweak tests
• The neutral heavy scalar productions associated with $Z_L$ in the littlest Higgs model at ILC and CLIC
• Single production of the gauge boson $W$ via polarized $e^{-}\gamma$ collisions in the littlest Higgs model
• The new charged gauge boson $W^{\prime }$ and the subprocess $eq\to \nu q^{\prime }$ at $e^{+}{e}^{-}$ and $ep$ colliders
• Precise predictions for $A_H{q}_{-}$ associated production in the littlest Higgs model with $T$ parity at the LHC
• The flavor-changing bottom-strange quark production in the littlest Higgs model with T parity at the ILC
• The flavor-changing top-charm associated productions at ILC in littlest Higgs model with T parity
• Heavy neutral pseudoscalar decays into gauge bosons in the Littlest Higgs Model
• The correction of the littlest Higgs model to the Higgs production process $e^{-}\gamma \to {\nu }_e{W}^{-}H$ in $e^{-}\gamma$ collisions
• The associated productions of the new gauge boson $B_H$ in the littlest Higgs model with a SM gauge boson via $e^{+}{e}^{-}$ collision
• The production of the new gauge boson $B_H$ via $e^{-}\gamma$ collision in the littlest Higgs model
• Associated Production of Z_H and T in the Littlest Higgs Model at High Energy Linear e^-e^+ Collider
• NLO QCD corrections to same-sign $T$-odd quark pair production in the littlest Higgs model with $T$-parity at the LHC
• One-loop QCD correction to top pair production in the littlest Higgs model with T-parity at the LHC
• Towards the effective potential of the Littlest Higgs model
• Associated $Z^0{H}^0$ production with leptonic decays at LHC in next-to-leading order QCD
• $HZ$ associated production at the LHC within the littlest Higgs model at NLO+NLL accuracy
• The Sensitivity of Higgs Factories to Composite Higgs Models via Precision Measurements