Revisiting the Global Electroweak Fit of the Standard Model and Beyond with Gfitter

Abstract

The global fit of the Standard Model to electroweak precision data, routinely performed by the LEP electroweak working group and others, demonstrated impressively the predictive power of electroweak unification and quantum loop corrections. We have revisited this fit in view of (i) the development of the new generic fitting package Gfitter, (ii) the insertion of constraints from direct Higgs searches at LEP and the Tevatron, and (iii) a more thorough statistical interpretation of the results. Gfitter is a modular fitting toolkit, which features predictive theoretical models as independent plugins, and a statistical analysis of the fit results using toy Monte Carlo techniques. The state-of-the-art electroweak Standard Model is fully implemented, as well as generic extensions to it. This paper introduces the Gfitter project, and presents state-of-the-art results for the global electroweak fit in the Standard Model, and for a model with an extended Higgs sector (2HDM). Numerical and graphical results for fits with and without including the constraints from the direct Higgs searches at LEP and Tevatron are given. Perspectives for future colliders are analysed and discussed. Including the direct Higgs searches, we find M_H=(116.4 +18.3 -1.3) GeV, and the 2sigma and 3sigma allowed regions [114,145] GeV and [[113,168] and [180,225]] GeV, respectively. For the strong coupling strength at fourth perturbative order we obtain alpha_S(M_Z)=0.1193 +0.0028 -0.0027(exp) +- 0.0001(theo). Finally, for the mass of the top quark, excluding the direct measurements, we find m_t=(178.2 +9.8 -4.2) GeV. In the 2HDM we exclude a charged-Higgs mass below 240 GeV at 95% confidence level. This limit increases towards larger tan(beta), where e.g., M_H+-<780 GeV is excluded for tan(beta)=70.

Version accepted for publication in EPJ-C and corrected for erratum, 66 pages, 14 figures, Gfitter web: http://www.cern.ch/Gfitter

References in corpus (17)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Hadronic Z- and tau-Decays in Order alpha_s^4
• Improved predictions for g-2 of the muon and α_{\rm QED}(M_Z^2)
• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• On the running coupling constant in QCD
• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• Basis-independent methods for the two-Higgs-doublet model II. The significance of tan(beta)
• Electroweak two-loop corrections to the effective weak mixing angle
• Strong-Coupling Constant with Flavor Thresholds at Five Loops in the MS-bar Scheme
• Single Scale Tadpoles and O(GF mt^2 as^3) Corrections to the rho Parameter
• Four-Loop QCD Corrections to the Rho Parameter
• Observation of the Semileptonic Decays B --> D* tau nubar and Evidence for B --> D tau nubar
• A search for B+ --> tau+ nu with Hadronic B tags
• A Search for B+ -> tau+ nu
• Re-evaluation of the LHC potential for the measurement of Mw
• NuTeV ${\sin }^2{\theta }_{\mathrm{W}}$ anomaly and nuclear parton distributions revisited

Cited by in corpus (136)

• Reevaluation of the Hadronic Contributions to the Muon g-2 and to alpha(MZ)
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• MCFM for the Tevatron and the LHC
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
• QCD and strongly coupled gauge theories: challenges and perspectives
• A first unbiased global NLO determination of parton distributions and their uncertainties
• The Electroweak Fit of the Standard Model after the Discovery of a New Boson at the LHC
• Illuminating Dark Photons with High-Energy Colliders
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• The 2009 World Average of ${\alpha }_s$
• Thrust at N^3LL with Power Corrections and a Precision Global Fit for alphas(mZ)
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• The Probable Fate of the Standard Model
• Updated Status of the Global Electroweak Fit and Constraints on New Physics
• Flavor constraints on two-Higgs-doublet models with general diagonal Yukawa couplings
• Gauge bosons at zero and finite temperature
• The muon $g$-2 and $\Delta \alpha$ connection
• $\bar{B}\to X_s\gamma$ in the Two Higgs Doublet Model up to Next-to-Next-to-Leading Order in QCD
• Basis-independent methods for the two-Higgs-doublet model III: The CP-conserving limit, custodial symmetry, and the oblique parameters S, T, U
• Charged-Higgs phenomenology in the Aligned two-Higgs-doublet model
• Physics at the e+ e- Linear Collider
• The Two Higgs Doublet of Type II facing flavour physics data
• Delta r and the W-boson mass in the Singlet Extension of the Standard Model
• Precision determination of electroweak parameters and the strange content of the proton from neutrino deep-inelastic scattering
• Less space for a new family of fermions
• A Higgs Conundrum with Vector Fermions
• How much space is left for a new family?
• Prospects for charged Higgs searches at the LHC
• $\text{HEPfit}$: a Code for the Combination of Indirect and Direct Constraints on High Energy Physics Models
• Hidden Higgs Decaying to Lepton Jets
• Precision predictions for the t+t(bar) production cross section at hadron colliders
• Higgs Portal Inflation
• Higgs coupling measurements at the LHC
• Light Custodians and Higgs Physics in Composite Models
• A Precise Determination of ${\alpha }_s$ from the C-parameter Distribution
• Electroweak Precision Fit and New Physics in light of $W$ Boson Mass
• Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV
• Limitations and Opportunities of Off-Shell Coupling Measurements
• The MSSM confronts the precision electroweak data and the muon g-2
• RG-improved single-particle inclusive cross sections and forward-backward asymmetry in $t\bar{t}$ production at hadron colliders
• A Profile Likelihood Analysis of the Constrained MSSM with Genetic Algorithms
• World Summary of ${\alpha }_s$ (2012)
• Impact of correlations between $a_{\mu }$ and ${\alpha }_{QED}$ on the EW fit
• Discovering Technicolor
• Global analysis of electroweak data in the Standard Model
• Delta F = 2 observables and B -> X_q gamma decays in the Left-Right Model: Higgs particles striking back
• Measurement of masses in the t t-bar system by kinematic endpoints in pp collisions at sqrt(s) = 7 TeV
• Electroweak Precision Tests of the Standard Model after the Discovery of the Higgs Boson
• Radiative Corrections in Precision Electroweak Physics: a Historical Perspective
• NLO QCD corrections to five-jet production at LEP and the extraction of alpha_s(M_Z)
• From the LHC to Future Colliders
• Two Higgs doublet models for the LHC Higgs boson data at $\sqrt{s}=$ 7 and 8 TeV
• Physics Beyond the Standard Model
• Bayesian Fit of Exclusive $b\to s\bar{\ell }\ell$ Decays: The Standard Model Operator Basis
• Combining NLO QCD and Electroweak Radiative Corrections to W boson Production at Hadron Colliders in the POWHEG Framework
• Phenomenology of the constrained NMSSM
• Muon $g-2$ in the Aligned Two Higgs Doublet Model
• EFTfitter---A tool for interpreting measurements in the context of effective field theories
• Fermionic extensions of the Standard Model in light of the Higgs couplings
• Constraining SUSY models with Fittino using measurements before, with and beyond the LHC
• The Hunt for New Physics in the Flavour Sector with up vector-like quarks
• QCD Corrections in two-Higgs-doublet extensions of the Standard Model with Minimal Flavor Violation
• Decays of $H^0/A^0$ in supersymmetric scenarios with heavy sfermions
• Combined search for the quarks of a sequential fourth generation
• Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies
• Superconformal Technicolor
• A Step Toward Model Comparison: Connecting Electroweak-Scale Observables to BSM through EFT and Bayesian Statistics
• CEPC Precision of Electroweak Oblique Parameters and Weakly Interacting Dark Matter: the Fermionic Case
• Two-loop electroweak fermionic corrections to sin^2 theta_{eff}^{b anti-b}
• Two-loop fermionic electroweak corrections to the Z-boson width and production rate
• Improving the tunings of the MSSM by adding triplets and singlet
• Superconformal Technicolor: Models and Phenomenology
• Top quark mass measurement using the template method at CDF
• Testing Higgs portal dark matter via $Z$ fusion at a linear collider
• Inert Doublet Dark Matter and Mirror/Extra Families after Xenon100
• SUSY parameter determination at the LHC using cross sections and kinematic edges
• Higgs characterisation in the presence of theoretical uncertainties and invisible decays
• Dark Higgs Models at the 7 TeV LHC
• Numerical multi-loop integrals and applications
• One-Loop Calculation of the Oblique S Parameter in Higgsless Electroweak Models
• Delta r in the Two-Higgs-Doublet Model at full one loop level -- and beyond
• The Zbb Couplings at Future e+e- Colliders
• Quantum gauge models without classical Higgs mechanism
• Quantum Optimisation of Complex Systems with a Quantum Annealer
• Four Generations, Higgs Physics, and the MSSM
• Determination of Higgs-boson couplings (SFitter)
• The scale invariant scotogenic model: CDF-II $W$-boson mass and the 95 GeV excesses
• Predictions for m_t and m_W in Minimal Supersymmetric Models
• Changing patterns in electroweak precision with new color-charged states: Oblique corrections and the $W$ boson mass
• 125 GeV Higgs, Type III Seesaw and Gauge-Higgs Unification
• The Mass of the Higgs Boson in the Standard Electroweak Model
• Dark Matter Phenomenology of SM and Enlarged Higgs Sectors Extended with Vector Like Leptons
• W mass and Leptonic Z-decays in the NMSSM
• Electroweak Precision Observables and the Unhiggs
• The Hadronic Contribution to the Muon Anomalous Magnetic Moment and to the Running Electromagnetic Fine Structure Constant at MZ - Overview and Latest Results
• Interplay between new physics in one-loop Higgs couplings and the top-quark Yukawa coupling
• Measuring the Higgs Boson Self-coupling at High Energy e^+e^- Colliders
• Single Higgs-boson production at a photon-photon collider: general 2HDM versus MSSM
• Precise ${\alpha }_s$ determination from charmonium sum rules
• Possible Futures of Electroweak Precision: ILC, FCC-ee, and CEPC
• Search strategies for pair production of heavy Higgs bosons decaying invisibly at the LHC
• Precise determination of ${\alpha }_s$ from relativistic quarkonium sum rules
• Top Quark Physics at the Tevatron
• Left-right supersymmetry after the Higgs boson discovery
• Three Extra Mirror or Sequential Families: a Case for Heavy Higgs and Inert Doublet
• Improved strong coupling determinations from hadronic decays of electroweak bosons at N${}^3$LO accuracy
• Natural Higgs Inflation, Gauge Coupling Unification, and Neutrino Masses
• Prospects for New Physics at the LHC
• Hadronic contribution to the QED running coupling $\alpha (M_Z^2)$
• Top-quark mass measurement using events with missing transverse energy and jets at CDF
• CDF-II W boson mass in the Dirac Scotogenic model
• Higgs FCNC h -> t* c decay at the muon collider
• Correlating the CDF $W$-boson mass shift with the $b\to s{\ell }^{+}{\ell }^{-}$ anomalies
• Beyond the Standard Model for Montaneros
• Higgs Phenomenology in Warped Extra-Dimensions with a 4th Generation
• Standard Model Higgs boson searches at the Tevatron
• Higgs Boson Mass Bounds in Seesaw Extended Standard Model with Non-Minimal Gravitational Coupling
• EFT, decoupling, Higgs boson mixing, and higher dimensional operators
• Status of the global fit to electroweak precisions data
• Measuring the Higgs boson couplings
• The electroweak fit and constraints on new physics
• Global Fits of the electroweak Standard Model and beyond with Gfitter
• $m_b(m_Z)$ revisited with Zedometry
• Improving Combinatorial Ambiguities of ttbar Events Using Neural Networks
• Present status and future prospects for a Higgs boson discovery at the Tevatron and LHC
• Dark matter, extra-terrestrial gamma-rays and the MSSM: a viability study
• Higgs, supersymmetry and dark matter after Run I of the LHC
• Electroweak Precision Constraints on Dark Photon Models with Generalized Mixing
• Outlook for Charged Higgs Physics
• The top-quark's running mass
• Future Colliders Symposium in Hong Kong: Scientific Overview
• Status of Leading-Order Hadronic Vacuum Polarization Dispersion Calculation
• Constraints on the excitations in the Strongly Coupled Standard Model
• CMS results and status
• Constraints on the two-Higgs-doublet model
• Higgs boson self coupling from two-loop analysis