On hard exclusive reactions in the time-like region
High Energy Physics - Phenomenology
2010-11-19 v1
Abstract
The proton form factor, two-photon annihilations into as well as exclusive charmonium decays are critically examined. It will be argued that the standard perturbative QCD analysis of these reactions fails, i.e. the need for additional contributions can convincingly be demonstrated. Possible dynamical mechanisms such as colour-octet admixtures to the charmonium states or diquarks inside baryons, will be discussed and compared to the data.
Keywords
Cite
@article{arxiv.hep-ph/9611338,
title = {On hard exclusive reactions in the time-like region},
author = {P. Kroll},
journal= {arXiv preprint arXiv:hep-ph/9611338},
year = {2010}
}
Comments
Invited talk presented at the Fourth Biennal Conference on Low-Energy Antiproton Physics, LEAP96, Dinkelsb\"{u}hl (August 1996); 8 pages, LaTeX, 4 PS-figures; uses 'espcrc2.sty' and 'psfig.sty'