Two Photon Width of eta_c (paper version)
High Energy Physics - Phenomenology
2011-09-13 v1
Abstract
We discuss the measured partial width of the pseudoscalar charmonium state eta_c into two photons. Predictions from potential models are examined and compared with experimental values. Including radiative corrections, it is found that present measurements are compatible both with a QCD type potential and with a static Coulomb potential. The latter is then used to give an estimate on the eta_b decay into two photons. Results for eta_c are also compared with those from j/psi data through the NRQCD model.
Keywords
Cite
@article{arxiv.hep-ph/0204214,
title = {Two Photon Width of eta_c (paper version)},
author = {Nicola Fabiano and Giulia Pancheri},
journal= {arXiv preprint arXiv:hep-ph/0204214},
year = {2011}
}
Comments
12 pages, 4 figures, latex2e, uses graphicx and cite