Charmed quark component of the photon wave function
High Energy Physics - Phenomenology
2009-11-10 v1
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0410361,
title = {Charmed quark component of the photon wave function},
author = {V. V. Anisovich and L. G. Dakhno and V. N. Markov and V. A. Nikonov and A. V. Sarantsev},
journal= {arXiv preprint arXiv:hep-ph/0410361},
year = {2009}
}
Comments
20 pages, 8 figures