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

Pervez Hoodbhoy
1999 Physical Review Letters  
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.
doi:10.1103/physrevlett.82.4985 fatcat:pcnnrc3uynhl3by53vrtklfwou