The photon to pseudoscalar meson transition form factors

Abstract

In this talk it is reported on an analysis of the form factors for the transitions from a photon to one of the pseudoscalar mesons pi0, eta, eta', etac within the modified perturbative approach in which quark transverse degrees of freedom are retained. The report is focused on the discussion of the surprising features the new BaBar data exhibit, namely the sharp rise of the pi-gamma form factor with the photon virtuality and the strong breaking of flavor symmetry in the sector of pseudoscalar mesons.

19 pages, 8 figures, using Latex, talk presented at the conference on Hadronic Structure, Tatranska Strba (2011)

References in corpus (7)

• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Moments of pseudoscalar meson distribution amplitudes from the lattice
• Light Cone Sum Rules for the pi0-gamma*-gamma Form Factor Revisited
• 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 and mixing: from real to highly virtual photons

Cited by in corpus (5)

• Measurement of the ${\gamma }^{\star }{\gamma }^{\star }\to {\eta }^{\prime }$ transition form factor
• The puzzle of the π-> γγ* transition form factor
• Hadronic Form Factor Models and Spectroscopy Within the Gauge/Gravity Correspondence
• Form factors of ${\eta }_c$ in light front quark model
• Study of pesudoscalar transition form factors within light front quark model