Charmed quark component of the photon wave function

Details Charmed quark component of the photon wave function Charmed quark component of the photon wave function

2004-10-27

arxiv.org/abs/hep-ph/0410361v1

Phys.Atom.Nucl. 68 (2005) 2081-2092; Yad.Fiz. 68 (2005) 2143-2154

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 8 figures

Scientific paper

10.1134/1.2149087

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.

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