Inclusive tau lepton hadronic decay in vector and axial-vector channels within dispersive approach to QCD

Abstract

The dispersive approach to QCD, which properly embodies the intrinsically nonperturbative constraints originating in the kinematic restrictions on relevant physical processes and extends the applicability range of perturbation theory towards the infrared domain, is briefly overviewed. The study of OPAL (update 2012) and ALEPH (update 2014) experimental data on inclusive tau lepton hadronic decay in vector and axial-vector channels within dispersive approach is presented.

Talk given at 11th International Conference on Quark Confinement and the Hadron Spectrum, 8 - 12 September 2014, Saint-Petersburg, Russian Federation; 6 pages, 3 figures, 1 table

References in corpus (41)

• Remarks on higher-order hadronic corrections to the muon g-2
• 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
• Update of the ALEPH non-strange spectral functions from hadronic $\tau$ decays
• Dispersive approach to hadronic light-by-light scattering
• alpha_s and the tau hadronic width: fixed-order, contour-improved and higher-order perturbation theory
• Ten years of the Analytic Perturbation Theory in QCD
• Analytic Invariant Charge in QCD
• Dispersive representation and shape of the Kl3 form factors: robustness
• Bound state approach to the QCD coupling at low energy scales
• ${\alpha }_s$ from $\tau$ decays: contour-improved versus fixed-order summation in a new QCD perturbation expansion
• 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 VV'P form factors in resonance chiral theory and the pi-eta-eta' light-by-light contribution to the muon g-2
• The massive analytic invariant charge in QCD
• QCD coupling below 1 GeV from quarkonium spectrum
• Bjorken Sum Rule and pQCD frontier on the move
• 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
• Reconciling the analytic QCD with the ITEP operator product expansion philosophy
• Nucleon spin structure at low momentum transfers
• QCD sum rules with nonlocal condensates and the spacelike pion form factor
• Calculation of binding energies and masses of quarkonia in analytic QCD models
• QCDMAPT_F: Fortran version of QCDMAPT package
• Glueballs and Mesons: the Ground States
• The QCD analysis of the combined set for the F_3 structure function data based on the analytic approach
• Gluon Propagator in Fractional Analytic Perturbation Theory
• On the low-energy behavior of the Adler function
• QCD Effective Coupling in the Infrared Region
• Nonperturbative aspects of the QCD analytic invariant charge
• Is it possible to check urgently the 5-loop analytical results for the $e^{+}{e}^{-}$-annihilation Adler function ?
• Infrared Freezing of Euclidean QCD observables
• QCD rescattering mechanism for diffractive deep inelastic scattering
• Pion form factor analysis using NLO analytic perturbation theory
• Hadronic effects in low-energy QCD: inclusive tau lepton decay
• The QCD analytic running coupling and chiral symmetry breaking
• The QCD analytic effective charge and its dependence on the pion mass
• Extracting infrared QCD coupling from meson spectrum
• Phenomenology of hadron structure --- why low energy physics matters

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• Electron-positron annihilation into hadrons at the higher-loop levels
• Lattice-motivated holomorphic nearly perturbative QCD
• Explicit form of the R-ratio of electron-positron annihilation into hadrons