Hadronic contributions to electroweak observables within DPT

Abstract

Dispersive approach to quantum chromodynamics is applied to the assessment of hadronic contributions to electroweak observables. The employed approach merges the corresponding perturbative input with intrinsically nonperturbative constraints, which originate in the respective kinematic restrictions. The evaluated hadronic contributions to the muon anomalous magnetic moment and to the shift of the electromagnetic fine structure constant at the scale of Z boson mass conform with recent assessments of these quantities.

Talk given at 18th International QCD Conference (QCD 15), 29 June - 3 July 2015, Montpellier, France; 5 pages, 3 figures

References in corpus (29)

• Hadronic Z- and tau-Decays in Order alpha_s^4
• The pion-pion scattering amplitude. IV: Improved analysis with once subtracted Roy-like equations up to 1100 MeV
• Towards a data-driven analysis of hadronic light-by-light scattering
• Status of the Fermilab Muon (g-2) Experiment
• Analytic Invariant Charge in QCD
• ${\alpha }_s$ from $\tau$ decays: contour-improved versus fixed-order summation in a new QCD perturbation expansion
• Bound state approach to the QCD coupling at low energy scales
• Small-x behavior of the structure function F_2 and its slope partial ln(F_2)/partial ln(1/x) for "frozen" and analytic strong-coupling constants
• The massive analytic invariant charge in QCD
• QCD coupling below 1 GeV from quarkonium spectrum
• Perturbative expansion of the QCD Adler function improved by renormalization-group summation and analytic continuation in the Borel plane
• Infrared enhanced analytic coupling and chiral symmetry breaking in QCD
• Extended analytic QCD model with perturbative QCD behavior at high momenta
• Matching Chiral Perturbation Theory and the Dispersive Representation of the Scalar Kpi Form Factor
• FAPT: a Mathematica package for calculations in QCD Fractional Analytic Perturbation Theory
• The light-by-light contribution to the muon (g-2) from lightest pseudoscalar and scalar mesons within nonlocal chiral quark model
• A Dispersive Treatment of $K_{\ell 4}$ Decays
• QCD sum rules with nonlocal condensates and the spacelike pion form factor
• anQCD: a Mathematica package for calculations in general analytic QCD models
• Calculation of binding energies and masses of quarkonia in analytic QCD models
• Hadronic vacuum polarization function within dispersive approach to QCD
• Glueballs and Mesons: the Ground States
• On the low-energy behavior of the Adler function
• Is it possible to check urgently the 5-loop analytical results for the $e^{+}{e}^{-}$-annihilation Adler function ?
• Infrared Freezing of Euclidean QCD observables
• Pion form factor analysis using NLO analytic perturbation theory
• Hadronic effects in low-energy QCD: inclusive tau lepton decay
• The QCD analytic effective charge and its dependence on the pion mass
• Dispersive approach to QCD: tau lepton hadronic decay in vector and axial-vector channels

Cited by in corpus (5)

• Electron-positron annihilation into hadrons at the higher-loop levels
• Explicit form of the R-ratio of electron-positron annihilation into hadrons
• Dispersive approach to QCD and hadronic contributions to electroweak observables
• Effects of the quark flavour thresholds in the hadronic vacuum polarization contributions to the muon anomalous magnetic moment
• Window quantities for the hadronic vacuum polarization contributions to the muon anomalous magnetic moment in spacelike and timelike domains