Gluonic effects in eta- and etaprime-nucleon and nucleus interactions
  Gluonic degrees of freedom play an important role in the masses of the eta and etaprime mesons. We discuss eta- and etaprime-nucleon and nucleus interactions where this glue may be manifest. Interesting processes being studied in experiments are etaprime production in proton-nucleon collisions close to threshold and possible eta-nucleus bound-states. 
Steven D. Bass