Meson - photon transition form factors
نویسندگان
چکیده
منابع مشابه
Photon-meson transition form factors of light pseudoscalar mesons
The photon-meson transition form factors of light pseudoscalar mesons π0, η, and η′ are systematically calculated in a light-cone framework, which is applicable as a light-cone quark model at low Q2 and is also physically in accordance with the light-cone pQCD approach at large Q2. The calculated results agree with the available experimental data at high energy scale. We also predict the low Q2...
متن کاملMeson-photon Transition Form Factors in the Charmonium Energy Range
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 γP , where P is a pseudoscalar meson such as π, η, and η can arise either from charmonium decays or in the continuum through a virtual photon: ee → γ → γP . Estimates of this latte...
متن کاملMeson Elastic and Transition Form Factors
The Dyson–Schwinger equations of QCD, truncated to ladder-rainbow level, are used to calculate meson form factors in impulse approximation. The infrared strength of the ladder-rainbow kernel is described by two parameters fitted to the chiral condensate and fπ; the ultraviolet behavior is fixed by the QCD running coupling. This obtained elastic form factors Fπ(Q) and FK(Q ) agree well with the ...
متن کاملMeson–photon transition form factors and resonance cross-sections in e+e− collisions
Meson–photon–photon transition form factors for S-, P -, and D-wave states are calculated, the meson being treated as a non-relativistic heavy-quark– antiquark pair. The full dependence on both photon virtualities is included. Cross-section formulas for charge-conjugation even mesons with J = 0−, 0, 1, 2, and 2− in electron–positron collisions are presented and numerical results for LEP energie...
متن کاملMeasurements of the meson-photon transition form factors of light pseudoscalar mesons at large momentum transfer
Production of even C-parity hadronic matter in ee scattering provides a unique opportunity to study the properties of strong interactions. To leading order in quantum electrodynamics (QED) these processes are described as the interaction between two photons emitted by the scattered electrons. Although in ee scattering the probe and the target are both represented by photons that are carriers of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 1996
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/22/1/004