The form factors for the photon to pseudoscalar meson transitions - an update

Abstract

The form factors for the transitions pi-photon, eta-photon, eta'-photon and etac-photon are analyzed within the modified perturbative approach in which quark transverse degrees of freedom are retained. The results for the form factors are compared to experiment in detail. As compared to previous calculations within the same approach only little modifications of the meson distribution amplitudes are required in general in order to achieve agreement with experiment. Only for the pi-photon form factor a strong contribution from the second Gegenbauer term is found. It is also commented on the case of two virtual photons and on the transition form factors in the time-like region.

33 pages, 12 figures, Latex

References in corpus (11)

• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Charged pion form factor between Q^2=0.60 and 2.45 GeV^2. II. Determination of, and results for, the pion form factor
• Abelian anomaly and neutral pion production
• Moments of pseudoscalar meson distribution amplitudes from the lattice
• On the Pion Distribution Amplitude Shape
• Pion transition form factor in k_T factorization
• Measurement of the gamma gamma* --> eta_c transition form factor
• Axial anomaly as a collective effect of meson spectrum
• Two-photon width of eta_c and eta'_c from Heavy-Quark Spin Symmetry
• Endpoint behavior of the pion distribution amplitude in QCD sum rules with nonlocal condensates
• Covariant Non-local Chiral Quark Model and Pion-photon Transition Distribution Amplitudes

Cited by in corpus (59)

• The Physics of the B Factories
• Transversity in hard exclusive electroproduction of pseudoscalar mesons
• Meson Transition Form Factors in Light-Front Holographic QCD
• Evolved QCD predictions for the meson-photon transition form factors
• γ*γ\rightarrow π^0 transition form factor at low-energies from a model-independent approach
• Comparing antithetic trends of data for the pion-photon transition form factor
• The VV'P form factors in resonance chiral theory and the pi-eta-eta' light-by-light contribution to the muon g-2
• Pion-photon transition---the new QCD frontier
• ηand η' transition form factors from rational approximants
• The eta transition form factor from space- and time-like experimental data
• Partonic structure of neutral pseudoscalars via two photon transition form factors
• Transversity in exclusive vector-meson leptoproduction
• Can we understand an auxetic pion-photon transition form factor within QCD? BaBar faces Belle
• Constraints on the Light Pseudoscalar Meson Distribution Amplitudes from Their Meson-Photon Transition Form Factors
• Two-photon form factors of the pi0, eta and eta-prime mesons in the chiral theory with resonances
• Joint resummation for pion wave function and pion transition form factor
• Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
• On the possibility to measure the (pi0 to gamma gamma) decay width and the (gamma* gamma to pi0) transition form factor with the KLOE-2 experiment
• On the large-Q^2 behavior of the pion transition form factor
• Transition Form Factors and Mixing of Pseudoscalar Mesons from Anomaly Sum Rule
• Subleading power corrections to the pion-photon transition form factor in QCD
• The eta (eta') gamma transition form factor and the gluon-gluon distribution amplitude
• A combined study of the pion's static properties and form factors
• Determination of the pion distribution amplitude
• Axial anomaly and mixing: from real to highly virtual photons
• Spacelike and timelike form factors for the $({\pi }^0,\eta ,{\eta }^{\prime })\to {\gamma }^{\ast }\gamma$ transitions in the light-front quark model
• Chiral Anomaly Effects and the BaBar Measurements of the $\gamma {\gamma }^{\ast }\to {\pi }^0$ Transition Form Factor
• The eta-photon transition form factor
• Universal behaviour of the ${\gamma }^{\ast }\gamma \to ({\pi }^0,\eta ,{\eta }^{\prime })$ transition form factors
• Determination of the $\eta$-${\eta }^{\prime }$ mixing angle
• Pion to photon transition form factors with basis light-front quantization
• Heavy and light meson wavefunctions
• On the ${\gamma }^{\ast }\gamma \to \pi (\eta ,{\eta }^{\prime })$ transition form factors
• The ${\gamma }^{\ast }{\gamma }^{\ast }\to {\eta }_c(1S,2S)$ transition form factors for spacelike photons
• The pion distribution amplitude and the pion-photon transition form factor in a nonlocal chiral quark model
• Exclusive Radiative Z-Boson Decays to Mesons with Flavor-Singlet Components
• Pion transition form factor in the constituent quark model
• The ${\gamma }^{\ast }{\gamma }^{\ast }\to {\eta }_c$ transition form factor
• Influence of confining gluon configurations on the $P\to {\gamma }^{\ast }\gamma$ transition form factors
• Systematic twist expansion of $({\eta }_c,{\eta }_b)\to {\gamma }^{\ast }\gamma$ transition form factors in light-front quark model
• A study of the gamma* - f0(980) transition form factors
• The photon-pion transition form factor: incompatible data or incompatible models?
• Chiral anomaly and the pion properties in the light-front quark model
• Form factors of ${\eta }_c$ in light front quark model
• The photon to pseudoscalar meson transition form factors
• Study of pesudoscalar transition form factors within light front quark model
• Pion-photon transition form factor using light-cone sum rules: theoretical results, expectations, and a global-data fit
• Hard exclusive processes involving kaons
• Power corrections to the pion transition form factor from higher-twist distribution amplitudes of photon
• Theoretical description and measurement of the pion-photon transition form factor
• On some implications of the BaBar data on the ${\gamma }^{\ast }{\eta }^{\prime }$ transition form factor
• Pion-photon transition form factor. Living on the QCD frontier
• Novel insights into the $\gamma {\gamma }^{\ast }\to {\pi }^0$ transition form factor
• Limit on the pion distribution amplitude
• EKHARA - new gamma gamma generator
• Twist-3 contributions to $\gamma \gamma \to {\pi }^{+}{\pi }^{-},K^{+}{K}^{-}$ processes in perturbative QCD approach
• Radial excitation of light mesons and the $\gamma {\gamma }^{\ast }\to {\pi }^0$ transition form factor
• Electromagnetic decays of the neutral pion investigated in the Dyson-Schwinger formalism
• Elastic and transition form factors of light pseudoscalar mesons from QCD sum rules