Electromagnetic transition form factor of pseudoscalar mesons andη−η′mixing
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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It is shown that a chiral quark model of the Nambu–Jona-Lasinio type can be used to describe ”soft”-momenta parts of the amplitudes with large momentum transfer. As a sample, the processes γ∗ → γ(π, η, η′) where one of the photons, γ∗, has large spacelike virtuality is investigated. The γ∗ → γ(π, η, η′) transition form factors are calculated for a wide region of transferred momenta. The results...
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A relativistic constituent quark model is adopted to give an unified description of the leptonic and semileptonic decays of pseudoscalar mesons (π, K, D, Ds, B, Bs). The calculated leptonic decay constants and form factors are found to be in good agreement with available experimental data and the results of other approaches. Eventually, the model is found to reproduce the scaling behaviours of ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1998
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.58.113006