Fermi Constants and ``New Physics''

Abstract

Various precision determinations of the Fermi constant are compared. Included are muon and (leptonic) tau decays as well as indirect prescriptions employing $α, m_Z, m_W, \ssthwmzms, Γ(Z\to\ell^+\ell^-)$, and $\Gamma (Z\to \nu \bar{\nu })$ as input. Their good agreement tests the standard model at the $\pm 0.1$ level and provides stringent constraints on new physics. That utility is illustrated for: heavy neutrino mixing, 2 Higgs doublet models, S, T, and U parameters and excited $W^{{\ast }^{\pm }}$ bosons (Kaluza-Klein excitations). For the last of those examples, $m_{W^\ast}\gsims 2.9$ TeV is found.

14 pages

Cited by in corpus (103)

• Bounds on Universal Extra Dimensions
• The Littlest Higgs
• Bulk Fields and Supersymmetry in a Slice of AdS
• Muon Decay and Physics Beyond the Standard Model
• Theory of Neutrinos: A White Paper
• Proton stability in grand unified theories, in strings, and in branes
• Supersymmetry Breaking through Transparent Extra Dimensions
• Experimental Probes of Localized Gravity: On and Off the Wall
• Flavour physics of leptons and dipole moments
• Gauge bosons in a five-dimensional theory with localized gravity
• Bulk Standard Model in the Randall-Sundrum Background
• Little Higgses from an Antisymmetric Condensate
• Physics with the KLOE-2 experiment at the upgraded DA$\varphi$NE
• Physics at a future Neutrino Factory and super-beam facility
• A Constrained Standard Model from a Compact Extra Dimension
• Electroweak precision measurements and collider probes of the Standard Model with large extra dimensions
• Rare Charm Decays in the Standard Model and Beyond
• Electroweak and Flavor Physics in Extensions of the Standard Model with Large Extra Dimensions
• Precision Measurements and CKM Unitarity
• Neutron Lifetime and Axial Coupling Connection
• Probes Of Universal Extra Dimensions at Colliders
• Extra-weakly Interacting Dark Matter
• The Hunt for New Physics at the Large Hadron Collider
• Mass effects in muon and semileptonic b -> c decays
• Collider Implications of Universal Extra Dimensions
• Two-loop Neutrino Mass Generation and its Experimental Consequences
• Low Energy Precision Test of Supersymmetry
• Finite Radiative Electroweak Symmetry Breaking from the Bulk
• Gauge-Higgs Unification in Higher Dimensions
• Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant to Part-per-Million Precision
• Looking For TeV-Scale Strings and Extra-Dimensions
• An Introduction to Extra Dimensions
• Probing a Very Narrow $Z^{\prime }$ Boson with CDF and D0 Data
• Minimal Higher-Dimensional Extensions of the Standard Model and Electroweak Observables
• The Intermediate Higgs
• Neutrino-Electron Scattering Theory
• New Signal for Universal Extra Dimensions
• The Stueckelberg Z Prime at the LHC: Discovery Potential, Signature Spaces and Model Discrimination
• Scrutinizing CKM unitarity with a new measurement of the $K_{\mu 3}/K_{\mu 2}$ branching fraction
• Testing the Nature of Kaluza-Klein Excitations at Future Lepton Colliders
• The Fermi constant from muon decay versus electroweak fits and CKM unitarity
• n-nbar Oscillations in Models with Large Extra Dimensions
• Collider Implications of Kaluza-Klein Excitations of the Gluons
• The NuTeV Anomaly, Lepton Universality, and Non-Universal Neutrino-Gauge Couplings
• Improved Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant
• Shedding Light on Dark Matter: A Faraday Rotation Experiment to Limit a Dark Magnetic Moment
• Effective Theory and Simple Completions for Neutrino Interactions
• Effects of CP Violation from Neutral Heavy Fermions on Neutrino Oscillations, and the LSND/MiniBooNE Anomalies
• Muon Decay Spectrum: Leading Logarithmic Approximation
• On the effective theory of neutrino-electron and neutrino-quark interactions
• Supersymmetric Contributions to Weak Decay Correlation Coefficients
• The NuTeV Anomaly, Neutrino Mixing, and a Heavy Higgs Boson
• High-energy electrons from the muon decay in orbit: radiative corrections
• Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays
• CP violation in 5D Split Fermions Scenario
• Asymmetrical large extra dimensions
• Simple Formulae for Sin^2 theta_eff^lept, M_W, Gamma_l, and their Physical Applications
• Muonium Decay
• Orbifold Breaking of Left-Right Gauge Symmetry
• Strong tree level unitarity violations in the extra dimensional Standard Model with scalars in the bulk
• W-propagator corrections to muon and tau leptonic decays
• Probing Supersymmetry with Parity-Violating Electron Scattering
• Parity-Violating Electron Scattering as a Probe of Supersymmetry
• The Equivalence Theorem for gauge boson scattering in a five dimensional Standard Model
• Pion Leptonic Decays and Supersymmetry
• Charged Current Universality in the MSSM
• Cartography with Accelerators: Locating Fermions in Extra Dimensions at Future Lepton Colliders
• Three-loop corrections to the muon and heavy quark decay rates
• The Top Priority: Precision Electroweak Physics from Low to High Energy
• Ab-initio electroweak corrections to superallowed $\beta$ decays and their impact on $V_{ud}$
• Flavor Constraints on Split Fermion Models
• Nuclear beta-decay, Atomic Parity Violation, and New Physics
• Lepton Universality, Rare Decays and Split Fermions
• Radiative corrections to superallowed $\beta$ decays in effective field theory
• Observing Dark Matter via the Gyromagnetic Faraday Effect
• New Ideas in Symmetry Breaking
• Four Fermion Contact Terms in Charged Current Processes and Large Extra Dimensions
• Supersymmetric Effects in Deep Inelastic Neutrino-Nucleus Scattering
• Constraints on the Mass and Mixing of the 4th Generation Quark From Direct CP Violation${\epsilon }^{\prime }/\epsilon$ and Rare K Decays
• Parapositronium can decay into three photons
• Yukawa Hierarchies From Extra Dimensions With Small FCNC
• The LSND/MiniBooNe excess events and heavy neutrino from muon and kaon decays
• The Physics of Extra Dimensions
• Fundamental measurements with muons - View from PSI
• Gauge coupling unification with large extra dimensions
• Gravitational decays of heavy particles in large extra dimensions
• Phenomenology of a 5D Orbifold $SU(3{)}_W$ Unification model
• Positronium Decay into a Photon and Neutrinos
• The lightest Higgs mass in supersymmetric models with extra dimensions
• Top-quark loops and the muon anomalous magnetic moment
• Limit on the electric charge-nonconserving ${\mu }^{+}\to invisible$ decay
• Muon Physics: A Pillar of the Standard Model
• Collider Implications of Multiple Non-Universal Extra Dimensions
• Decay of a bound muon into a bound electron
• Thirty Years of Precision Electroweak Physics
• Angular distribution asymmetry in tau^- --> pi^- pi^0 nu_tau decay in the two-Higgs-doublet model with large tan beta
• Shape function in QED and bound muon decays
• Phenomenology in supersymmetric neutrinophilic Higgs model with sneutrino dark matter
• Topics in Electroweak Physics
• The Impact of Kaluza-Klein Excited W Boson on the Single Top at LHC and Comparison with other Models
• Precision test of the SM with Kl2 and Kl3 decays at KLOE
• A Mechanism for Kaluza-Klein Number Violation in UED and Implications for LHC
• Can a Nonstandard Invisible Pair Mimic the Michel Distribution?