Two photon width of eta_c
High Energy Physics - Phenomenology
2017-08-23 v1
Abstract
We discuss the measured partial width of the pseudoscalar charmonium state, , 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, with evaluated at two loops. Results are also compared with those from data through the NRQCD model.
Cite
@article{arxiv.hep-ph/0110211,
title = {Two photon width of eta_c},
author = {Nicola Fabiano and Giulia Pancheri},
journal= {arXiv preprint arXiv:hep-ph/0110211},
year = {2017}
}
Comments
4 Pages, 1 figure, use ws-p8-50x6-00.cls. To appear in the proceedings of the Photon 2001 Conference on The Structure and Interactions of the Photon, September 2nd-7th 2001, Ascona, Switzerland