1 research outputs found
On the role of the on the transverse nuclear response in the reaction
The transverse nuclear response to an electromagnetic probe which is limited
to create (or destroyed) a particle-hole () or delta-hole () pair
is analyzed. Correlations of the random phase approximation (RPA) type and self
energy insertions are considered. For RPA correlations we have developed a
scheme which includes explicitly the and the exchange terms. Self
energy insertions over and bubbles are studied. Several
residual interactions based on a contact plus a ()-meson exchange
potential are used. All calculations are performed in non-relativistic nuclear
matter. The main effect of the is to reduce the intensity over the
nuclear quasi-elastic peak. Exchange RPA terms are very important, while the
self energy depends strongly on the residual interaction employed. We compare
our final result with data for at momentum transfer and
MeV/c.Comment: 42 pages, 18 Postscript figure