Meson-Photon Transition Form Factors in the Charmonium Energy Range

Abstract

The study of electron-positron collisions at center-of-mass energies corresponding to charmonium production has reached new levels of sensitivity thanks to experiments by the BES and CLEO Collaborations. Final states $\gamma P$, where $P$ is a pseudoscalar meson such as ${\pi }^0$, $\eta$, and ${\eta }^{\prime }$ can arise either from charmonium decays or in the continuum through a virtual photon: $e^{+}{e}^{-}\to {\gamma }^{\ast }\to \gamma P$. Estimates of this latter process are given at center-of-mass (c.m.) energies corresponding to the $J/\psi (1S)$, $\psi (2S)$, and $\psi (3770)$ resonances.

7 pages, to be submitted to Phys. Rev. D. Version referring to new CLEO data

References in corpus (10)

• Mixing and Decay Constants of Pseudoscalar Mesons
• Measurements of the Meson-Photon Transition Form Factors of Light Pseudoscalar Mesons at Large Momentum Transfer
• Mixing and Decay Constants of Pseudoscalar Mesons: The Sequel
• Study of e+e- --> pi+ pi- pi0 process using initial state radiation with BABAR
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• Measurement of the eta and etaprime transition form factors at q^2=112 GeV^2
• Amplitude relations for $B$ decays involving $\eta$ and ${\eta }^{\prime }$
• Measurement of the Branching Fraction of J/psi --> pi+ pi- pi0
• Charmonium decays to gamma pi0, gamma eta, and gamma eta'
• Decays of Charmed Mesons to PV Final States

Cited by in corpus (11)

• Heavy quarkonium: progress, puzzles, and opportunities
• The ${\eta }^{\prime }$ transition form factor from space- and time-like experimental data
• ηand η' transition form factors from rational approximants
• The eta transition form factor from space- and time-like experimental data
• Evidence for psi' decays into gamma pi^0 and gamma eta
• Unified study of $J/\psi \to PV$, $P{\gamma }^{(\ast )}$ and light hadron radiative processes
• Understanding the radiative decays of vector charmonia to light pseudoscalar mesons
• Measurement of branching fractions for $\psi (3686)\to \gamma {\eta }^{\prime },\gamma \eta$ and $\gamma {\pi }^0$
• Bound states and fermiophobic Unparticle oblique corrections to the photon
• Chiral expansion for pi^0 decays
• On decays of light unflavoured pseudoscalar mesons