J/\psi production through resolved photon processes at e+ e- colliders
Abstract
We consider J/psi photoproduction in e+ e- as well as linear photon colliders. We find that the process is dominated by the resolved photon channel. Both the once-resolved and twice-resolved cross-sections are sensitive to (different combinations of) the colour octet matrix elements. Hence, this may be a good testing ground for colour octet contributions in NRQCD. On the other hand, the once-resolved J/psi production cross-section, particularly in a linear photon collider, is sensitive to the gluon content of the photon. Hence these cross-sections can be used to determine the parton distribution functions, especially the gluon distribution, in a photon, if the colour octet matrix elements are known.
Cite
@article{arxiv.hep-ph/0101333,
title = {J/\psi production through resolved photon processes at e+ e- colliders},
author = {R. M. Godbole and D. Indumathi and M. Kraemer},
journal= {arXiv preprint arXiv:hep-ph/0101333},
year = {2011}
}
Comments
Added a figure on parametrisation dependence of photonic parton densities and some references