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09 August 2022
  » arxiv » hep-ph/0410361

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Charmed quark component of the photon wave function
V.V. Anisovich ; L.G. Dakhno ; V.N. Markov ; V.A. Nikonov ; A.V. Sarantsev ;
Date 27 Oct 2004
Subject hep-ph
AbstractWe 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.
Source arXiv, hep-ph/0410361
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