THE EMC EFFECT AND ITS Q2 DEPENDENCE FROM A QUARK-GLUONIC 3-BODY CORRELATION IN NUCLEI, AND J-PSI LEPTO-PRODUCTION FROM NUCLEAR GLUE

We consider the possibility that quark-gluonic degrees of freedom contribute explicity to many-body correlations and forces in nuclei. We develop a general physical picture, and apply it to achieve a remarkably quantitative description of the EMC effect. From the physical picture, we are able to predict specific Q2 dependence for the effect, in particular, an increasing loss of integrated momentum fraction from charged constituents. We calculate unusual, characteristic features of leptoproduction of J/ψ on the nuclear gluons, that is the nuclear gluonic field associated with three-nucleon correlations. We give detailed predictions for all aspects of the EMC effect that are presently being measured with new precision, and contrast these with the expectations from nuclear pions. © 1990 Springer-Verlag.