Charmed quark component of the photon wave function
| Autor: | V. V. Anisovich, V. A. Nikonov, L. G. Dakhno, A. V. Sarantsev, V. N. Markov |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Photon Basis (linear algebra) Component (thermodynamics) Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences State (functional analysis) Atomic and Molecular Physics and Optics Charm quark High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics::Experiment Wave function Excitation |
| Zdroj: | Physics of Atomic Nuclei. 68:2081-2092 |
| ISSN: | 1562-692X 1063-7788 |
| DOI: | 10.1134/1.2149087 |
| Popis: | We determine the c-anti-c component of the photon wave function on the basis of (i) the data on the transitions e+ e- -> J/psi(3096), psi(3686), psi(4040), psi(4415), (ii) partial widths of the two-photon decays eta_{c0}(2979), chi_{c0}(3415), chi_{c2}(3556) -> gamma-gamma, and (iii) wave functions of the charmonium states obtained by solving the Bethe-Salpeter equation for the c-anti-c system. Using the obtained c-anti-c component of the photon wave function we calculate the gamma-gamma decay partial widths for radial excitation 2S state, eta_{c0}(3594) -> gamma-gamma, and 2P states chi_{c0}(3849), chi_{c2}(3950) -> gamma-gamma. 20 pages, 8 figures |
| Databáze: | OpenAIRE |
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