Nucleon-Quarkonium Elastic Scattering and the Gluon Contribution to Nucleon Spin

Abstract

It is shown that the amplitude for the scattering of a heavy quarkonium system from a nucleon near threshold is completely determined by the fraction of angular momentum, as well as linear momentum, carried by gluons in the nucleon. A form for the quarkonium-nucleon non-relativistic potential is derived.

Comments: 4 pages, no figures. Author's e-mail: hoodbhoy@isb.pol.com.pk