Pseudoscalar meson 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...
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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...
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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 کاملForm factor relations for pseudoscalar to vector meson transitions
In semi-leptonic and other weak decays of mesons, the hadronic matrix elements of the operators in the weak Hamiltonian are parametrized by standard sets of independent, Lorentz invariant, form factors. For the case of pseudoscalar to vector meson transitions, it has been shown that a Quark Model description leads to relations between some of the form factors. Here, I give an alternate, and mor...
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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...
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ژورنال
عنوان ژورنال: Progress in Particle and Nuclear Physics
سال: 2012
ISSN: 0146-6410
DOI: 10.1016/j.ppnp.2012.01.003